[PATCH v9 1/5] dt-bindings: add binding for i.MX8MQ CCM

[PATCH v9 1/5] dt-bindings: add binding for i.MX8MQ CCM

[Abel Vesa]

From: Lucas Stach <l.stach@pengutronix.de>

This adds the binding for the i.MX8MQ Clock Controller Module.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/imx8mq-clock.txt     |  20 ++
 include/dt-bindings/clock/imx8mq-clock.h           | 395 +++++++++++++++++++++
 2 files changed, 415 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/imx8mq-clock.txt
 create mode 100644 include/dt-bindings/clock/imx8mq-clock.h

diff --git a/Documentation/devicetree/bindings/clock/imx8mq-clock.txt b/Documentation/devicetree/bindings/clock/imx8mq-clock.txt
new file mode 100644
index 0000000..52de826
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/imx8mq-clock.txt
@@ -0,0 +1,20 @@
+* Clock bindings for NXP i.MX8M Quad
+
+Required properties:
+- compatible: Should be "fsl,imx8mq-ccm"
+- reg: Address and length of the register set
+- #clock-cells: Should be <1>
+- clocks: list of clock specifiers, must contain an entry for each required
+          entry in clock-names
+- clock-names: should include the following entries:
+    - "ckil"
+    - "osc_25m"
+    - "osc_27m"
+    - "clk_ext1"
+    - "clk_ext2"
+    - "clk_ext3"
+    - "clk_ext4"
+
+The clock consumer should specify the desired clock by having the clock
+ID in its "clocks" phandle cell.  See include/dt-bindings/clock/imx8mq-clock.h
+for the full list of i.MX8M Quad clock IDs.
diff --git a/include/dt-bindings/clock/imx8mq-clock.h b/include/dt-bindings/clock/imx8mq-clock.h
new file mode 100644
index 0000000..b53be41
--- /dev/null
+++ b/include/dt-bindings/clock/imx8mq-clock.h
@@ -0,0 +1,395 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017 NXP
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_IMX8MQ_H
+#define __DT_BINDINGS_CLOCK_IMX8MQ_H
+
+#define IMX8MQ_CLK_DUMMY		0
+#define IMX8MQ_CLK_32K			1
+#define IMX8MQ_CLK_25M			2
+#define IMX8MQ_CLK_27M			3
+#define IMX8MQ_CLK_EXT1			4
+#define IMX8MQ_CLK_EXT2			5
+#define IMX8MQ_CLK_EXT3			6
+#define IMX8MQ_CLK_EXT4			7
+
+/* ANAMIX PLL clocks */
+/* FRAC PLLs */
+/* ARM PLL */
+#define IMX8MQ_ARM_PLL_REF_SEL		8
+#define IMX8MQ_ARM_PLL_REF_DIV		9
+#define IMX8MQ_ARM_PLL			10
+#define IMX8MQ_ARM_PLL_BYPASS		11
+#define IMX8MQ_ARM_PLL_OUT		12
+
+/* GPU PLL */
+#define IMX8MQ_GPU_PLL_REF_SEL		13
+#define IMX8MQ_GPU_PLL_REF_DIV		14
+#define IMX8MQ_GPU_PLL			15
+#define IMX8MQ_GPU_PLL_BYPASS		16
+#define IMX8MQ_GPU_PLL_OUT		17
+
+/* VPU PLL */
+#define IMX8MQ_VPU_PLL_REF_SEL		18
+#define IMX8MQ_VPU_PLL_REF_DIV		19
+#define IMX8MQ_VPU_PLL			20
+#define IMX8MQ_VPU_PLL_BYPASS		21
+#define IMX8MQ_VPU_PLL_OUT		22
+
+/* AUDIO PLL1 */
+#define IMX8MQ_AUDIO_PLL1_REF_SEL	23
+#define IMX8MQ_AUDIO_PLL1_REF_DIV	24
+#define IMX8MQ_AUDIO_PLL1		25
+#define IMX8MQ_AUDIO_PLL1_BYPASS	26
+#define IMX8MQ_AUDIO_PLL1_OUT		27
+
+/* AUDIO PLL2 */
+#define IMX8MQ_AUDIO_PLL2_REF_SEL	28
+#define IMX8MQ_AUDIO_PLL2_REF_DIV	29
+#define IMX8MQ_AUDIO_PLL2		30
+#define IMX8MQ_AUDIO_PLL2_BYPASS	31
+#define IMX8MQ_AUDIO_PLL2_OUT		32
+
+/* VIDEO PLL1 */
+#define IMX8MQ_VIDEO_PLL1_REF_SEL	33
+#define IMX8MQ_VIDEO_PLL1_REF_DIV	34
+#define IMX8MQ_VIDEO_PLL1		35
+#define IMX8MQ_VIDEO_PLL1_BYPASS	36
+#define IMX8MQ_VIDEO_PLL1_OUT		37
+
+/* SYS1 PLL */
+#define IMX8MQ_SYS1_PLL1_REF_SEL	38
+#define IMX8MQ_SYS1_PLL1_REF_DIV	39
+#define IMX8MQ_SYS1_PLL1		40
+#define IMX8MQ_SYS1_PLL1_OUT		41
+#define IMX8MQ_SYS1_PLL1_OUT_DIV	42
+#define IMX8MQ_SYS1_PLL2		43
+#define IMX8MQ_SYS1_PLL2_DIV		44
+#define IMX8MQ_SYS1_PLL2_OUT		45
+
+/* SYS2 PLL */
+#define IMX8MQ_SYS2_PLL1_REF_SEL	46
+#define IMX8MQ_SYS2_PLL1_REF_DIV	47
+#define IMX8MQ_SYS2_PLL1		48
+#define IMX8MQ_SYS2_PLL1_OUT		49
+#define IMX8MQ_SYS2_PLL1_OUT_DIV	50
+#define IMX8MQ_SYS2_PLL2		51
+#define IMX8MQ_SYS2_PLL2_DIV		52
+#define IMX8MQ_SYS2_PLL2_OUT		53
+
+/* SYS3 PLL */
+#define IMX8MQ_SYS3_PLL1_REF_SEL	54
+#define IMX8MQ_SYS3_PLL1_REF_DIV	55
+#define IMX8MQ_SYS3_PLL1		56
+#define IMX8MQ_SYS3_PLL1_OUT		57
+#define IMX8MQ_SYS3_PLL1_OUT_DIV	58
+#define IMX8MQ_SYS3_PLL2		59
+#define IMX8MQ_SYS3_PLL2_DIV		60
+#define IMX8MQ_SYS3_PLL2_OUT		61
+
+/* DRAM PLL */
+#define IMX8MQ_DRAM_PLL1_REF_SEL	62
+#define IMX8MQ_DRAM_PLL1_REF_DIV	63
+#define IMX8MQ_DRAM_PLL1		64
+#define IMX8MQ_DRAM_PLL1_OUT		65
+#define IMX8MQ_DRAM_PLL1_OUT_DIV	66
+#define IMX8MQ_DRAM_PLL2		67
+#define IMX8MQ_DRAM_PLL2_DIV		68
+#define IMX8MQ_DRAM_PLL2_OUT		69
+
+/* SYS PLL DIV */
+#define IMX8MQ_SYS1_PLL_40M		70
+#define IMX8MQ_SYS1_PLL_80M		71
+#define IMX8MQ_SYS1_PLL_100M		72
+#define IMX8MQ_SYS1_PLL_133M		73
+#define IMX8MQ_SYS1_PLL_160M		74
+#define IMX8MQ_SYS1_PLL_200M		75
+#define IMX8MQ_SYS1_PLL_266M		76
+#define IMX8MQ_SYS1_PLL_400M		77
+#define IMX8MQ_SYS1_PLL_800M		78
+
+#define IMX8MQ_SYS2_PLL_50M		79
+#define IMX8MQ_SYS2_PLL_100M		80
+#define IMX8MQ_SYS2_PLL_125M		81
+#define IMX8MQ_SYS2_PLL_166M		82
+#define IMX8MQ_SYS2_PLL_200M		83
+#define IMX8MQ_SYS2_PLL_250M		84
+#define IMX8MQ_SYS2_PLL_333M		85
+#define IMX8MQ_SYS2_PLL_500M		86
+#define IMX8MQ_SYS2_PLL_1000M		87
+
+/* CCM ROOT clocks */
+/* A53 */
+#define IMX8MQ_CLK_A53_SRC		88
+#define IMX8MQ_CLK_A53_CG		89
+#define IMX8MQ_CLK_A53_DIV		90
+/* M4 */
+#define IMX8MQ_CLK_M4_SRC		91
+#define IMX8MQ_CLK_M4_CG		92
+#define IMX8MQ_CLK_M4_DIV		93
+/* VPU */
+#define IMX8MQ_CLK_VPU_SRC		94
+#define IMX8MQ_CLK_VPU_CG		95
+#define IMX8MQ_CLK_VPU_DIV		96
+/* GPU CORE */
+#define IMX8MQ_CLK_GPU_CORE_SRC		97
+#define IMX8MQ_CLK_GPU_CORE_CG		98
+#define IMX8MQ_CLK_GPU_CORE_DIV		99
+/* GPU SHADER */
+#define IMX8MQ_CLK_GPU_SHADER_SRC	100
+#define IMX8MQ_CLK_GPU_SHADER_CG	101
+#define IMX8MQ_CLK_GPU_SHADER_DIV	102
+
+/* BUS TYPE */
+/* MAIN AXI */
+#define IMX8MQ_CLK_MAIN_AXI		103
+/* ENET AXI */
+#define IMX8MQ_CLK_ENET_AXI		104
+/* NAND_USDHC_BUS */
+#define IMX8MQ_CLK_NAND_USDHC_BUS	105
+/* VPU BUS */
+#define IMX8MQ_CLK_VPU_BUS		106
+/* DISP_AXI */
+#define IMX8MQ_CLK_DISP_AXI		107
+/* DISP APB */
+#define IMX8MQ_CLK_DISP_APB		108
+/* DISP RTRM */
+#define IMX8MQ_CLK_DISP_RTRM		109
+/* USB_BUS */
+#define IMX8MQ_CLK_USB_BUS		110
+/* GPU_AXI */
+#define IMX8MQ_CLK_GPU_AXI		111
+/* GPU_AHB */
+#define IMX8MQ_CLK_GPU_AHB		112
+/* NOC */
+#define IMX8MQ_CLK_NOC			113
+/* NOC_APB */
+#define IMX8MQ_CLK_NOC_APB		115
+
+/* AHB */
+#define IMX8MQ_CLK_AHB			116
+/* AUDIO AHB */
+#define IMX8MQ_CLK_AUDIO_AHB		117
+
+/* DRAM_ALT */
+#define IMX8MQ_CLK_DRAM_ALT		118
+/* DRAM APB */
+#define IMX8MQ_CLK_DRAM_APB		119
+/* VPU_G1 */
+#define IMX8MQ_CLK_VPU_G1		120
+/* VPU_G2 */
+#define IMX8MQ_CLK_VPU_G2		121
+/* DISP_DTRC */
+#define IMX8MQ_CLK_DISP_DTRC		122
+/* DISP_DC8000 */
+#define IMX8MQ_CLK_DISP_DC8000		123
+/* PCIE_CTRL */
+#define IMX8MQ_CLK_PCIE1_CTRL		124
+/* PCIE_PHY */
+#define IMX8MQ_CLK_PCIE1_PHY		125
+/* PCIE_AUX */
+#define IMX8MQ_CLK_PCIE1_AUX		126
+/* DC_PIXEL */
+#define IMX8MQ_CLK_DC_PIXEL		127
+/* LCDIF_PIXEL */
+#define IMX8MQ_CLK_LCDIF_PIXEL		128
+/* SAI1~6 */
+#define IMX8MQ_CLK_SAI1			129
+
+#define IMX8MQ_CLK_SAI2			130
+
+#define IMX8MQ_CLK_SAI3			131
+
+#define IMX8MQ_CLK_SAI4			132
+
+#define IMX8MQ_CLK_SAI5			133
+
+#define IMX8MQ_CLK_SAI6			134
+/* SPDIF1 */
+#define IMX8MQ_CLK_SPDIF1		135
+/* SPDIF2 */
+#define IMX8MQ_CLK_SPDIF2		136
+/* ENET_REF */
+#define IMX8MQ_CLK_ENET_REF		137
+/* ENET_TIMER */
+#define IMX8MQ_CLK_ENET_TIMER		138
+/* ENET_PHY */
+#define IMX8MQ_CLK_ENET_PHY_REF		139
+/* NAND */
+#define IMX8MQ_CLK_NAND			140
+/* QSPI */
+#define IMX8MQ_CLK_QSPI			141
+/* USDHC1 */
+#define IMX8MQ_CLK_USDHC1		142
+/* USDHC2 */
+#define IMX8MQ_CLK_USDHC2		143
+/* I2C1 */
+#define IMX8MQ_CLK_I2C1			144
+/* I2C2 */
+#define IMX8MQ_CLK_I2C2			145
+/* I2C3 */
+#define IMX8MQ_CLK_I2C3			146
+/* I2C4 */
+#define IMX8MQ_CLK_I2C4			147
+/* UART1 */
+#define IMX8MQ_CLK_UART1		148
+/* UART2 */
+#define IMX8MQ_CLK_UART2		149
+/* UART3 */
+#define IMX8MQ_CLK_UART3		150
+/* UART4 */
+#define IMX8MQ_CLK_UART4		151
+/* USB_CORE_REF */
+#define IMX8MQ_CLK_USB_CORE_REF		152
+/* USB_PHY_REF */
+#define IMX8MQ_CLK_USB_PHY_REF		163
+/* ECSPI1 */
+#define IMX8MQ_CLK_ECSPI1		164
+/* ECSPI2 */
+#define IMX8MQ_CLK_ECSPI2		165
+/* PWM1 */
+#define IMX8MQ_CLK_PWM1			166
+/* PWM2 */
+#define IMX8MQ_CLK_PWM2			167
+/* PWM3 */
+#define IMX8MQ_CLK_PWM3			168
+/* PWM4 */
+#define IMX8MQ_CLK_PWM4			169
+/* GPT1 */
+#define IMX8MQ_CLK_GPT1			170
+/* WDOG */
+#define IMX8MQ_CLK_WDOG			171
+/* WRCLK */
+#define IMX8MQ_CLK_WRCLK		172
+/* DSI_CORE */
+#define IMX8MQ_CLK_DSI_CORE		173
+/* DSI_PHY */
+#define IMX8MQ_CLK_DSI_PHY_REF		174
+/* DSI_DBI */
+#define IMX8MQ_CLK_DSI_DBI		175
+/*DSI_ESC */
+#define IMX8MQ_CLK_DSI_ESC		176
+/* CSI1_CORE */
+#define IMX8MQ_CLK_CSI1_CORE		177
+/* CSI1_PHY */
+#define IMX8MQ_CLK_CSI1_PHY_REF		178
+/* CSI_ESC */
+#define IMX8MQ_CLK_CSI1_ESC		179
+/* CSI2_CORE */
+#define IMX8MQ_CLK_CSI2_CORE		170
+/* CSI2_PHY */
+#define IMX8MQ_CLK_CSI2_PHY_REF		181
+/* CSI2_ESC */
+#define IMX8MQ_CLK_CSI2_ESC		182
+/* PCIE2_CTRL */
+#define IMX8MQ_CLK_PCIE2_CTRL		183
+/* PCIE2_PHY */
+#define IMX8MQ_CLK_PCIE2_PHY		184
+/* PCIE2_AUX */
+#define IMX8MQ_CLK_PCIE2_AUX		185
+/* ECSPI3 */
+#define IMX8MQ_CLK_ECSPI3		186
+
+/* CCGR clocks */
+#define IMX8MQ_CLK_A53_ROOT			187
+#define IMX8MQ_CLK_DRAM_ROOT			188
+#define IMX8MQ_CLK_ECSPI1_ROOT			189
+#define IMX8MQ_CLK_ECSPI2_ROOT			180
+#define IMX8MQ_CLK_ECSPI3_ROOT			181
+#define IMX8MQ_CLK_ENET1_ROOT			182
+#define IMX8MQ_CLK_GPT1_ROOT			193
+#define IMX8MQ_CLK_I2C1_ROOT			194
+#define IMX8MQ_CLK_I2C2_ROOT			195
+#define IMX8MQ_CLK_I2C3_ROOT			196
+#define IMX8MQ_CLK_I2C4_ROOT			197
+#define IMX8MQ_CLK_M4_ROOT			198
+#define IMX8MQ_CLK_PCIE1_ROOT			199
+#define IMX8MQ_CLK_PCIE2_ROOT			200
+#define IMX8MQ_CLK_PWM1_ROOT			201
+#define IMX8MQ_CLK_PWM2_ROOT			202
+#define IMX8MQ_CLK_PWM3_ROOT			203
+#define IMX8MQ_CLK_PWM4_ROOT			204
+#define IMX8MQ_CLK_QSPI_ROOT			205
+#define IMX8MQ_CLK_SAI1_ROOT			206
+#define IMX8MQ_CLK_SAI2_ROOT			207
+#define IMX8MQ_CLK_SAI3_ROOT			208
+#define IMX8MQ_CLK_SAI4_ROOT			209
+#define IMX8MQ_CLK_SAI5_ROOT			210
+#define IMX8MQ_CLK_SAI6_ROOT			212
+#define IMX8MQ_CLK_UART1_ROOT			213
+#define IMX8MQ_CLK_UART2_ROOT			214
+#define IMX8MQ_CLK_UART3_ROOT			215
+#define IMX8MQ_CLK_UART4_ROOT			216
+#define IMX8MQ_CLK_USB1_CTRL_ROOT		217
+#define IMX8MQ_CLK_USB2_CTRL_ROOT		218
+#define IMX8MQ_CLK_USB1_PHY_ROOT		219
+#define IMX8MQ_CLK_USB2_PHY_ROOT		220
+#define IMX8MQ_CLK_USDHC1_ROOT			221
+#define IMX8MQ_CLK_USDHC2_ROOT			222
+#define IMX8MQ_CLK_WDOG1_ROOT			223
+#define IMX8MQ_CLK_WDOG2_ROOT			224
+#define IMX8MQ_CLK_WDOG3_ROOT			225
+#define IMX8MQ_CLK_GPU_ROOT			226
+#define IMX8MQ_CLK_HEVC_ROOT			227
+#define IMX8MQ_CLK_AVC_ROOT			228
+#define IMX8MQ_CLK_VP9_ROOT			229
+#define IMX8MQ_CLK_HEVC_INTER_ROOT		230
+#define IMX8MQ_CLK_DISP_ROOT			231
+#define IMX8MQ_CLK_HDMI_ROOT			232
+#define IMX8MQ_CLK_HDMI_PHY_ROOT		233
+#define IMX8MQ_CLK_VPU_DEC_ROOT			234
+#define IMX8MQ_CLK_CSI1_ROOT			235
+#define IMX8MQ_CLK_CSI2_ROOT			236
+#define IMX8MQ_CLK_RAWNAND_ROOT			237
+#define IMX8MQ_CLK_SDMA1_ROOT			238
+#define IMX8MQ_CLK_SDMA2_ROOT			239
+#define IMX8MQ_CLK_VPU_G1_ROOT			240
+#define IMX8MQ_CLK_VPU_G2_ROOT			241
+
+/* SCCG PLL GATE */
+#define IMX8MQ_SYS1_PLL_OUT			232
+#define IMX8MQ_SYS2_PLL_OUT			243
+#define IMX8MQ_SYS3_PLL_OUT			244
+#define IMX8MQ_DRAM_PLL_OUT			245
+
+#define IMX8MQ_GPT_3M_CLK			246
+
+#define IMX8MQ_CLK_IPG_ROOT			247
+#define IMX8MQ_CLK_IPG_AUDIO_ROOT		248
+#define IMX8MQ_CLK_SAI1_IPG			249
+#define IMX8MQ_CLK_SAI2_IPG			250
+#define IMX8MQ_CLK_SAI3_IPG			251
+#define IMX8MQ_CLK_SAI4_IPG			252
+#define IMX8MQ_CLK_SAI5_IPG			253
+#define IMX8MQ_CLK_SAI6_IPG			254
+
+/* DSI AHB/IPG clocks */
+/* rxesc clock */
+#define IMX8MQ_CLK_DSI_AHB			255
+/* txesc clock */
+#define IMX8MQ_CLK_DSI_IPG_DIV                  256
+
+#define IMX8MQ_CLK_TMU_ROOT			265
+
+/* Display root clocks */
+#define IMX8MQ_CLK_DISP_AXI_ROOT		266
+#define IMX8MQ_CLK_DISP_APB_ROOT		267
+#define IMX8MQ_CLK_DISP_RTRM_ROOT		268
+
+#define IMX8MQ_CLK_OCOTP_ROOT			269
+
+#define IMX8MQ_CLK_DRAM_ALT_ROOT		270
+#define IMX8MQ_CLK_DRAM_CORE			271
+
+#define IMX8MQ_CLK_MU_ROOT			272
+#define IMX8MQ_VIDEO2_PLL_OUT			273
+
+#define IMX8MQ_CLK_CLKO2			274
+
+#define IMX8MQ_CLK_NAND_USDHC_BUS_RAWNAND_CLK	275
+
+#define IMX8MQ_CLK_END				276
+#endif /* __DT_BINDINGS_CLOCK_IMX8MQ_H */
-- 
2.7.4

Re: [PATCH v9 1/5] dt-bindings: add binding for i.MX8MQ CCM

[Stephen Boyd]

Quoting Abel Vesa (2018-09-24 03:39:53)
> From: Lucas Stach <l.stach@pengutronix.de>
> 
> This adds the binding for the i.MX8MQ Clock Controller Module.
> 
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---

I'll wait for the resend.

[PATCH v9 2/5] clk: imx: add fractional PLL output clock

[Abel Vesa]

From: Lucas Stach <l.stach@pengutronix.de>

This is a new clock type introduced on i.MX8.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---
 drivers/clk/imx/Makefile       |   1 +
 drivers/clk/imx/clk-frac-pll.c | 215 +++++++++++++++++++++++++++++++++++++++++
 drivers/clk/imx/clk.h          |   3 +
 3 files changed, 219 insertions(+)
 create mode 100644 drivers/clk/imx/clk-frac-pll.c

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index 8c3baa7..4893c1f 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -6,6 +6,7 @@ obj-y += \
 	clk-cpu.o \
 	clk-fixup-div.o \
 	clk-fixup-mux.o \
+	clk-frac-pll.o \
 	clk-gate-exclusive.o \
 	clk-gate2.o \
 	clk-pllv1.o \
diff --git a/drivers/clk/imx/clk-frac-pll.c b/drivers/clk/imx/clk-frac-pll.c
new file mode 100644
index 0000000..030df76
--- /dev/null
+++ b/drivers/clk/imx/clk-frac-pll.c
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+#include <linux/bitfield.h>
+
+#include "clk.h"
+
+#define PLL_CFG0		0x0
+#define PLL_CFG1		0x4
+
+#define PLL_LOCK_STATUS		BIT(31)
+#define PLL_PD_MASK		BIT(19)
+#define PLL_BYPASS_MASK		BIT(14)
+#define PLL_NEWDIV_VAL		BIT(12)
+#define PLL_NEWDIV_ACK		BIT(11)
+#define PLL_FRAC_DIV_MASK	GENMASK(30, 7)
+#define PLL_INT_DIV_MASK	GENMASK(6, 0)
+#define PLL_OUTPUT_DIV_MASK	GENMASK(4, 0)
+#define PLL_FRAC_DENOM		0x1000000
+
+#define PLL_FRAC_LOCK_TIMEOUT	10000
+#define PLL_FRAC_ACK_TIMEOUT	500000
+
+struct clk_frac_pll {
+	struct clk_hw	hw;
+	void __iomem	*base;
+};
+
+#define to_clk_frac_pll(_hw) container_of(_hw, struct clk_frac_pll, hw)
+
+static int clk_wait_lock(struct clk_frac_pll *pll)
+{
+	u32 val;
+
+	return readl_poll_timeout(pll->base, val, val & PLL_LOCK_STATUS, 0,
+					PLL_FRAC_LOCK_TIMEOUT);
+}
+
+static int clk_wait_ack(struct clk_frac_pll *pll)
+{
+	u32 val;
+
+	/* return directly if the pll is in powerdown or in bypass */
+	if (readl_relaxed(pll->base) & (PLL_PD_MASK | PLL_BYPASS_MASK))
+		return 0;
+
+	/* Wait for the pll's divfi and divff to be reloaded */
+	return readl_poll_timeout(pll->base, val, val & PLL_NEWDIV_ACK, 0,
+					PLL_FRAC_ACK_TIMEOUT);
+}
+
+static int clk_pll_prepare(struct clk_hw *hw)
+{
+	struct clk_frac_pll *pll = to_clk_frac_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val &= ~PLL_PD_MASK;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+	return clk_wait_lock(pll);
+}
+
+static void clk_pll_unprepare(struct clk_hw *hw)
+{
+	struct clk_frac_pll *pll = to_clk_frac_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val |= PLL_PD_MASK;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+}
+
+static int clk_pll_is_prepared(struct clk_hw *hw)
+{
+	struct clk_frac_pll *pll = to_clk_frac_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	return (val & PLL_PD_MASK) ? 0 : 1;
+}
+
+static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
+					 unsigned long parent_rate)
+{
+	struct clk_frac_pll *pll = to_clk_frac_pll(hw);
+	u32 val, divff, divfi, divq;
+	u64 temp64;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	divq = ((val & PLL_OUTPUT_DIV_MASK) + 1) * 2;
+	val = readl_relaxed(pll->base + PLL_CFG1);
+	divff = FIELD_GET(PLL_FRAC_DIV_MASK, val);
+	divfi = (val & PLL_INT_DIV_MASK);
+
+	temp64 = (u64)parent_rate * 8;
+	temp64 *= divff;
+	do_div(temp64, PLL_FRAC_DENOM);
+	temp64 /= divq;
+
+	return parent_rate * 8 * (divfi + 1) / divq + (unsigned long)temp64;
+}
+
+static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+			       unsigned long *prate)
+{
+	unsigned long parent_rate = *prate;
+	u32 divff, divfi;
+	u64 temp64;
+
+	parent_rate *= 8;
+	rate *= 2;
+	divfi = rate / parent_rate;
+	temp64 = (u64)(rate - divfi * parent_rate);
+	temp64 *= PLL_FRAC_DENOM;
+	do_div(temp64, parent_rate);
+	divff = temp64;
+
+	temp64 = (u64)parent_rate;
+	temp64 *= divff;
+	do_div(temp64, PLL_FRAC_DENOM);
+
+	return (parent_rate * divfi + (unsigned long)temp64) / 2;
+}
+
+/*
+ * To simplify the clock calculation, we can keep the 'PLL_OUTPUT_VAL' at zero
+ * (means the PLL output will be divided by 2). So the PLL output can use
+ * the below formula:
+ * pllout = parent_rate * 8 / 2 * DIVF_VAL;
+ * where DIVF_VAL = 1 + DIVFI + DIVFF / 2^24.
+ */
+static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+			    unsigned long parent_rate)
+{
+	struct clk_frac_pll *pll = to_clk_frac_pll(hw);
+	u32 val, divfi, divff;
+	u64 temp64;
+	int ret;
+
+	parent_rate *= 8;
+	rate *= 2;
+	divfi = rate / parent_rate;
+	temp64 = (u64) (rate - divfi * parent_rate);
+	temp64 *= PLL_FRAC_DENOM;
+	do_div(temp64, parent_rate);
+	divff = temp64;
+
+	val = readl_relaxed(pll->base + PLL_CFG1);
+	val &= ~(PLL_FRAC_DIV_MASK | PLL_INT_DIV_MASK);
+	val |= ((divff << 7) | (divfi - 1));
+	writel_relaxed(val, pll->base + PLL_CFG1);
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val &= ~0x1f;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+	/* Set the NEV_DIV_VAL to reload the DIVFI and DIVFF */
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val |= PLL_NEWDIV_VAL;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+	ret = clk_wait_ack(pll);
+
+	/* clear the NEV_DIV_VAL */
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val &= ~PLL_NEWDIV_VAL;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+	return ret;
+}
+
+static const struct clk_ops clk_frac_pll_ops = {
+	.prepare	= clk_pll_prepare,
+	.unprepare	= clk_pll_unprepare,
+	.is_prepared	= clk_pll_is_prepared,
+	.recalc_rate	= clk_pll_recalc_rate,
+	.round_rate	= clk_pll_round_rate,
+	.set_rate	= clk_pll_set_rate,
+};
+
+struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,
+			     void __iomem *base)
+{
+	struct clk_init_data init;
+	struct clk_frac_pll *pll;
+	struct clk *clk;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	pll->base = base;
+	init.name = name;
+	init.ops = &clk_frac_pll_ops;
+	init.flags = 0;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	pll->hw.init = &init;
+
+	clk = clk_register(NULL, &pll->hw);
+	if (IS_ERR(clk))
+		kfree(pll);
+
+	return clk;
+}
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 8076ec0..13daf1c 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -27,6 +27,9 @@ struct clk *imx_clk_pllv1(enum imx_pllv1_type type, const char *name,
 struct clk *imx_clk_pllv2(const char *name, const char *parent,
 		void __iomem *base);
 
+struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,
+			     void __iomem *base);
+
 enum imx_pllv3_type {
 	IMX_PLLV3_GENERIC,
 	IMX_PLLV3_SYS,
-- 
2.7.4

Re: [PATCH v9 2/5] clk: imx: add fractional PLL output clock

[Stephen Boyd]

Quoting Abel Vesa (2018-09-24 03:39:54)
> From: Lucas Stach <l.stach@pengutronix.de>
> 
> This is a new clock type introduced on i.MX8.

Ok, what's the clock type? Add another sentence please.

> 
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
[..]
> diff --git a/drivers/clk/imx/clk-frac-pll.c b/drivers/clk/imx/clk-frac-pll.c
> new file mode 100644
> index 0000000..030df76
> --- /dev/null
> +++ b/drivers/clk/imx/clk-frac-pll.c
> @@ -0,0 +1,215 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2018 NXP.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/jiffies.h>

Is this used for something?

> +#include <linux/slab.h>
> +#include <linux/bitfield.h>
> +
> +#include "clk.h"
[...]
> +
> +static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
> +                                        unsigned long parent_rate)
> +{
> +       struct clk_frac_pll *pll = to_clk_frac_pll(hw);
> +       u32 val, divff, divfi, divq;
> +       u64 temp64;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       divq = ((val & PLL_OUTPUT_DIV_MASK) + 1) * 2;
> +       val = readl_relaxed(pll->base + PLL_CFG1);
> +       divff = FIELD_GET(PLL_FRAC_DIV_MASK, val);
> +       divfi = (val & PLL_INT_DIV_MASK);

Nitpick: Drop useless parenthesis please.

> +
> +       temp64 = (u64)parent_rate * 8;
> +       temp64 *= divff;
> +       do_div(temp64, PLL_FRAC_DENOM);
> +       temp64 /= divq;
> +
> +       return parent_rate * 8 * (divfi + 1) / divq + (unsigned long)temp64;
> +}
> +
> +static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +                              unsigned long *prate)
> +{
> +       unsigned long parent_rate = *prate;
> +       u32 divff, divfi;
> +       u64 temp64;
> +
> +       parent_rate *= 8;

And parent_rate can't overflow if it's a u32? Maybe it could be a u64 so
that we don't need casting later on in this function.

> +       rate *= 2;
> +       divfi = rate / parent_rate;
> +       temp64 = (u64)(rate - divfi * parent_rate);
> +       temp64 *= PLL_FRAC_DENOM;
> +       do_div(temp64, parent_rate);
> +       divff = temp64;
> +
> +       temp64 = (u64)parent_rate;
> +       temp64 *= divff;
> +       do_div(temp64, PLL_FRAC_DENOM);
> +
> +       return (parent_rate * divfi + (unsigned long)temp64) / 2;
> +}
> +
> +/*
> + * To simplify the clock calculation, we can keep the 'PLL_OUTPUT_VAL' at zero
> + * (means the PLL output will be divided by 2). So the PLL output can use
> + * the below formula:
> + * pllout = parent_rate * 8 / 2 * DIVF_VAL;
> + * where DIVF_VAL = 1 + DIVFI + DIVFF / 2^24.
> + */
> +static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
> +                           unsigned long parent_rate)
> +{
> +       struct clk_frac_pll *pll = to_clk_frac_pll(hw);
> +       u32 val, divfi, divff;
> +       u64 temp64;
> +       int ret;
> +
> +       parent_rate *= 8;
> +       rate *= 2;
> +       divfi = rate / parent_rate;
> +       temp64 = (u64) (rate - divfi * parent_rate);
> +       temp64 *= PLL_FRAC_DENOM;
> +       do_div(temp64, parent_rate);
> +       divff = temp64;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG1);
> +       val &= ~(PLL_FRAC_DIV_MASK | PLL_INT_DIV_MASK);
> +       val |= ((divff << 7) | (divfi - 1));

Nitpick: Drop the extra parenthesis please.

> +       writel_relaxed(val, pll->base + PLL_CFG1);
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       val &= ~0x1f;
> +       writel_relaxed(val, pll->base + PLL_CFG0);
> +
> +       /* Set the NEV_DIV_VAL to reload the DIVFI and DIVFF */
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       val |= PLL_NEWDIV_VAL;
> +       writel_relaxed(val, pll->base + PLL_CFG0);
> +
> +       ret = clk_wait_ack(pll);
> +
> +       /* clear the NEV_DIV_VAL */
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       val &= ~PLL_NEWDIV_VAL;
> +       writel_relaxed(val, pll->base + PLL_CFG0);
> +
> +       return ret;
> +}
> +
> +static const struct clk_ops clk_frac_pll_ops = {
> +       .prepare        = clk_pll_prepare,
> +       .unprepare      = clk_pll_unprepare,
> +       .is_prepared    = clk_pll_is_prepared,
> +       .recalc_rate    = clk_pll_recalc_rate,
> +       .round_rate     = clk_pll_round_rate,
> +       .set_rate       = clk_pll_set_rate,
> +};
> +
> +struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,
> +                            void __iomem *base)
> +{
> +       struct clk_init_data init;
> +       struct clk_frac_pll *pll;
> +       struct clk *clk;
> +
> +       pll = kzalloc(sizeof(*pll), GFP_KERNEL);
> +       if (!pll)
> +               return ERR_PTR(-ENOMEM);
> +
> +       pll->base = base;
> +       init.name = name;
> +       init.ops = &clk_frac_pll_ops;
> +       init.flags = 0;
> +       init.parent_names = &parent_name;
> +       init.num_parents = 1;
> +
> +       pll->hw.init = &init;
> +
> +       clk = clk_register(NULL, &pll->hw);

clk_hw based please.

> +       if (IS_ERR(clk))
> +               kfree(pll);
> +
> +       return clk;
> +}

Re: [PATCH v9 2/5] clk: imx: add fractional PLL output clock

[Abel Vesa]

On Wed, Oct 17, 2018 at 12:59:44PM -0700, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-09-24 03:39:54)
> > From: Lucas Stach <l.stach@pengutronix.de>
> > 
> > This is a new clock type introduced on i.MX8.
> 
> Ok, what's the clock type? Add another sentence please.
> 

Added in the next version a link with the pdf describing the hardware
and specified in the commit message that is a fractional clock.

> > 
> > Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> > Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> [..]
> > diff --git a/drivers/clk/imx/clk-frac-pll.c b/drivers/clk/imx/clk-frac-pll.c
> > new file mode 100644
> > index 0000000..030df76
> > --- /dev/null
> > +++ b/drivers/clk/imx/clk-frac-pll.c
> > @@ -0,0 +1,215 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright 2018 NXP.
> > + */
> > +
> > +#include <linux/clk-provider.h>
> > +#include <linux/err.h>
> > +#include <linux/io.h>
> > +#include <linux/iopoll.h>
> > +#include <linux/jiffies.h>
> 
> Is this used for something?
>

Removed in the next version.

> > +#include <linux/slab.h>
> > +#include <linux/bitfield.h>
> > +
> > +#include "clk.h"
> [...]
> > +
> > +static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
> > +                                        unsigned long parent_rate)
> > +{
> > +       struct clk_frac_pll *pll = to_clk_frac_pll(hw);
> > +       u32 val, divff, divfi, divq;
> > +       u64 temp64;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       divq = ((val & PLL_OUTPUT_DIV_MASK) + 1) * 2;
> > +       val = readl_relaxed(pll->base + PLL_CFG1);
> > +       divff = FIELD_GET(PLL_FRAC_DIV_MASK, val);
> > +       divfi = (val & PLL_INT_DIV_MASK);
> 
> Nitpick: Drop useless parenthesis please.
> 

Removed in the next version.

> > +
> > +       temp64 = (u64)parent_rate * 8;
> > +       temp64 *= divff;
> > +       do_div(temp64, PLL_FRAC_DENOM);
> > +       temp64 /= divq;
> > +
> > +       return parent_rate * 8 * (divfi + 1) / divq + (unsigned long)temp64;
> > +}
> > +
> > +static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> > +                              unsigned long *prate)
> > +{
> > +       unsigned long parent_rate = *prate;
> > +       u32 divff, divfi;
> > +       u64 temp64;
> > +
> > +       parent_rate *= 8;
> 
> And parent_rate can't overflow if it's a u32? Maybe it could be a u64 so
> that we don't need casting later on in this function.
> 

Fixed in the next version.

> > +       rate *= 2;
> > +       divfi = rate / parent_rate;
> > +       temp64 = (u64)(rate - divfi * parent_rate);
> > +       temp64 *= PLL_FRAC_DENOM;
> > +       do_div(temp64, parent_rate);
> > +       divff = temp64;
> > +
> > +       temp64 = (u64)parent_rate;
> > +       temp64 *= divff;
> > +       do_div(temp64, PLL_FRAC_DENOM);
> > +
> > +       return (parent_rate * divfi + (unsigned long)temp64) / 2;
> > +}
> > +
> > +/*
> > + * To simplify the clock calculation, we can keep the 'PLL_OUTPUT_VAL' at zero
> > + * (means the PLL output will be divided by 2). So the PLL output can use
> > + * the below formula:
> > + * pllout = parent_rate * 8 / 2 * DIVF_VAL;
> > + * where DIVF_VAL = 1 + DIVFI + DIVFF / 2^24.
> > + */
> > +static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
> > +                           unsigned long parent_rate)
> > +{
> > +       struct clk_frac_pll *pll = to_clk_frac_pll(hw);
> > +       u32 val, divfi, divff;
> > +       u64 temp64;
> > +       int ret;
> > +
> > +       parent_rate *= 8;
> > +       rate *= 2;
> > +       divfi = rate / parent_rate;
> > +       temp64 = (u64) (rate - divfi * parent_rate);
> > +       temp64 *= PLL_FRAC_DENOM;
> > +       do_div(temp64, parent_rate);
> > +       divff = temp64;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG1);
> > +       val &= ~(PLL_FRAC_DIV_MASK | PLL_INT_DIV_MASK);
> > +       val |= ((divff << 7) | (divfi - 1));
> 
> Nitpick: Drop the extra parenthesis please.
> 

Removed in the next version.

> > +       writel_relaxed(val, pll->base + PLL_CFG1);
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       val &= ~0x1f;
> > +       writel_relaxed(val, pll->base + PLL_CFG0);
> > +
> > +       /* Set the NEV_DIV_VAL to reload the DIVFI and DIVFF */
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       val |= PLL_NEWDIV_VAL;
> > +       writel_relaxed(val, pll->base + PLL_CFG0);
> > +
> > +       ret = clk_wait_ack(pll);
> > +
> > +       /* clear the NEV_DIV_VAL */
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       val &= ~PLL_NEWDIV_VAL;
> > +       writel_relaxed(val, pll->base + PLL_CFG0);
> > +
> > +       return ret;
> > +}
> > +
> > +static const struct clk_ops clk_frac_pll_ops = {
> > +       .prepare        = clk_pll_prepare,
> > +       .unprepare      = clk_pll_unprepare,
> > +       .is_prepared    = clk_pll_is_prepared,
> > +       .recalc_rate    = clk_pll_recalc_rate,
> > +       .round_rate     = clk_pll_round_rate,
> > +       .set_rate       = clk_pll_set_rate,
> > +};
> > +
> > +struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,
> > +                            void __iomem *base)
> > +{
> > +       struct clk_init_data init;
> > +       struct clk_frac_pll *pll;
> > +       struct clk *clk;
> > +
> > +       pll = kzalloc(sizeof(*pll), GFP_KERNEL);
> > +       if (!pll)
> > +               return ERR_PTR(-ENOMEM);
> > +
> > +       pll->base = base;
> > +       init.name = name;
> > +       init.ops = &clk_frac_pll_ops;
> > +       init.flags = 0;
> > +       init.parent_names = &parent_name;
> > +       init.num_parents = 1;
> > +
> > +       pll->hw.init = &init;
> > +
> > +       clk = clk_register(NULL, &pll->hw);
> 
> clk_hw based please.
> 

Fixed in the next version.

> > +       if (IS_ERR(clk))
> > +               kfree(pll);
> > +
> > +       return clk;
> > +}

-- 

[PATCH v9 3/5] clk: imx: add SCCG PLL type

[Abel Vesa]

From: Lucas Stach <l.stach@pengutronix.de>

The SCCG is a new PLL type introduced on i.MX8. Add support for this.
The driver currently misses the PLL lock check, as the preliminary
documentation mentions lock configurations, but is quiet about where
to find the actual lock status signal.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---
 drivers/clk/imx/Makefile       |   3 +-
 drivers/clk/imx/clk-sccg-pll.c | 237 +++++++++++++++++++++++++++++++++++++++++
 drivers/clk/imx/clk.h          |   9 ++
 3 files changed, 248 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/imx/clk-sccg-pll.c

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index 4893c1f..b87513c 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -12,7 +12,8 @@ obj-y += \
 	clk-pllv1.o \
 	clk-pllv2.o \
 	clk-pllv3.o \
-	clk-pfd.o
+	clk-pfd.o \
+	clk-sccg-pll.o
 
 obj-$(CONFIG_SOC_IMX1)   += clk-imx1.o
 obj-$(CONFIG_SOC_IMX21)  += clk-imx21.o
diff --git a/drivers/clk/imx/clk-sccg-pll.c b/drivers/clk/imx/clk-sccg-pll.c
new file mode 100644
index 0000000..a9837fa
--- /dev/null
+++ b/drivers/clk/imx/clk-sccg-pll.c
@@ -0,0 +1,237 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2018 NXP.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/bitfield.h>
+
+#include "clk.h"
+
+/* PLL CFGs */
+#define PLL_CFG0		0x0
+#define PLL_CFG1		0x4
+#define PLL_CFG2		0x8
+
+#define PLL_DIVF1_MASK		GENMASK(18, 13)
+#define PLL_DIVF2_MASK		GENMASK(12, 7)
+#define PLL_DIVR1_MASK		GENMASK(27, 25)
+#define PLL_DIVR2_MASK		GENMASK(24, 19)
+#define PLL_REF_MASK		GENMASK(2, 0)
+
+#define PLL_LOCK_MASK		BIT(31)
+#define PLL_PD_MASK		BIT(7)
+
+#define OSC_25M			25000000
+#define OSC_27M			27000000
+
+#define PLL_SCCG_LOCK_TIMEOUT	70
+
+struct clk_sccg_pll {
+	struct clk_hw	hw;
+	void __iomem	*base;
+};
+
+#define to_clk_sccg_pll(_hw) container_of(_hw, struct clk_sccg_pll, hw)
+
+static int clk_pll_wait_lock(struct clk_sccg_pll *pll)
+{
+	u32 val;
+
+	return readl_poll_timeout(pll->base, val, val & PLL_LOCK_MASK, 0,
+					PLL_SCCG_LOCK_TIMEOUT);
+}
+
+static int clk_pll1_is_prepared(struct clk_hw *hw)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	return (val & PLL_PD_MASK) ? 0 : 1;
+}
+
+static unsigned long clk_pll1_recalc_rate(struct clk_hw *hw,
+					 unsigned long parent_rate)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val, divf;
+
+	val = readl_relaxed(pll->base + PLL_CFG2);
+	divf = FIELD_GET(PLL_DIVF1_MASK, val);
+
+	return parent_rate * 2 * (divf + 1);
+}
+
+static long clk_pll1_round_rate(struct clk_hw *hw, unsigned long rate,
+			       unsigned long *prate)
+{
+	unsigned long parent_rate = *prate;
+	u32 div;
+
+	div = rate / (parent_rate * 2);
+
+	return parent_rate * div * 2;
+}
+
+static int clk_pll1_set_rate(struct clk_hw *hw, unsigned long rate,
+			    unsigned long parent_rate)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val;
+	u32 divf;
+
+	divf = rate / (parent_rate * 2);
+
+	val = readl_relaxed(pll->base + PLL_CFG2);
+	val &= ~PLL_DIVF1_MASK;
+	val |= FIELD_PREP(PLL_DIVF1_MASK, divf - 1);
+	writel_relaxed(val, pll->base + PLL_CFG2);
+
+	return clk_pll_wait_lock(pll);
+}
+
+static int clk_pll1_prepare(struct clk_hw *hw)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val &= ~PLL_PD_MASK;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+	return clk_pll_wait_lock(pll);
+}
+
+static void clk_pll1_unprepare(struct clk_hw *hw)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	val |= PLL_PD_MASK;
+	writel_relaxed(val, pll->base + PLL_CFG0);
+
+}
+
+static unsigned long clk_pll2_recalc_rate(struct clk_hw *hw,
+					 unsigned long parent_rate)
+{
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+	u32 val, ref, divr1, divf1, divr2, divf2;
+	u64 temp64;
+
+	val = readl_relaxed(pll->base + PLL_CFG0);
+	switch (FIELD_GET(PLL_REF_MASK, val)) {
+	case 0:
+		ref = OSC_25M;
+		break;
+	case 1:
+		ref = OSC_27M;
+		break;
+	default:
+		ref = OSC_25M;
+		break;
+	}
+
+	val = readl_relaxed(pll->base + PLL_CFG2);
+	divr1 = FIELD_GET(PLL_DIVR1_MASK, val);
+	divr2 = FIELD_GET(PLL_DIVR2_MASK, val);
+	divf1 = FIELD_GET(PLL_DIVF1_MASK, val);
+	divf2 = FIELD_GET(PLL_DIVF2_MASK, val);
+
+	temp64 = ref * 2;
+	temp64 *= (divf1 + 1) * (divf2 + 1);
+
+	do_div(temp64, (divr1 + 1) * (divr2 + 1));
+
+	return (unsigned long)temp64;
+}
+
+static long clk_pll2_round_rate(struct clk_hw *hw, unsigned long rate,
+			       unsigned long *prate)
+{
+	u32 div;
+	unsigned long parent_rate = *prate;
+
+	div = rate / (parent_rate);
+
+	return parent_rate * div;
+}
+
+static int clk_pll2_set_rate(struct clk_hw *hw, unsigned long rate,
+			    unsigned long parent_rate)
+{
+	u32 val;
+	u32 divf;
+	struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
+
+	divf = rate / (parent_rate);
+
+	val = readl_relaxed(pll->base + PLL_CFG2);
+	val &= ~PLL_DIVF2_MASK;
+	val |= FIELD_PREP(PLL_DIVF2_MASK, divf - 1);
+	writel_relaxed(val, pll->base + PLL_CFG2);
+
+	return clk_pll_wait_lock(pll);
+}
+
+static const struct clk_ops clk_sccg_pll1_ops = {
+	.is_prepared	= clk_pll1_is_prepared,
+	.recalc_rate	= clk_pll1_recalc_rate,
+	.round_rate	= clk_pll1_round_rate,
+	.set_rate	= clk_pll1_set_rate,
+};
+
+static const struct clk_ops clk_sccg_pll2_ops = {
+	.prepare	= clk_pll1_prepare,
+	.unprepare	= clk_pll1_unprepare,
+	.recalc_rate	= clk_pll2_recalc_rate,
+	.round_rate	= clk_pll2_round_rate,
+	.set_rate	= clk_pll2_set_rate,
+};
+
+struct clk *imx_clk_sccg_pll(const char *name,
+				const char *parent_name,
+				void __iomem *base,
+				enum imx_sccg_pll_type pll_type)
+{
+	struct clk_sccg_pll *pll;
+	struct clk *clk;
+	struct clk_init_data init;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	pll->base = base;
+	init.name = name;
+	switch (pll_type) {
+	case SCCG_PLL1:
+		init.ops = &clk_sccg_pll1_ops;
+		break;
+	case SCCG_PLL2:
+		init.ops = &clk_sccg_pll2_ops;
+		break;
+	default:
+		kfree(pll);
+		return ERR_PTR(-EINVAL);
+	}
+
+	init.flags = 0;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	pll->hw.init = &init;
+
+	clk = clk_register(NULL, &pll->hw);
+	if (IS_ERR(clk))
+		kfree(pll);
+
+	return clk;
+}
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 13daf1c..12b3fd6 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -21,6 +21,11 @@ enum imx_pllv1_type {
 	IMX_PLLV1_IMX35,
 };
 
+enum imx_sccg_pll_type {
+	SCCG_PLL1,
+	SCCG_PLL2,
+};
+
 struct clk *imx_clk_pllv1(enum imx_pllv1_type type, const char *name,
 		const char *parent, void __iomem *base);
 
@@ -30,6 +35,10 @@ struct clk *imx_clk_pllv2(const char *name, const char *parent,
 struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,
 			     void __iomem *base);
 
+struct clk *imx_clk_sccg_pll(const char *name, const char *parent_name,
+			     void __iomem *base,
+			     enum imx_sccg_pll_type pll_type);
+
 enum imx_pllv3_type {
 	IMX_PLLV3_GENERIC,
 	IMX_PLLV3_SYS,
-- 
2.7.4

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Stephen Boyd]

Quoting Abel Vesa (2018-09-24 03:39:55)
> diff --git a/drivers/clk/imx/clk-sccg-pll.c b/drivers/clk/imx/clk-sccg-pll.c
> new file mode 100644
> index 0000000..a9837fa
> --- /dev/null
> +++ b/drivers/clk/imx/clk-sccg-pll.c
> @@ -0,0 +1,237 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright 2018 NXP.
> + */
> +
> +#include <linux/clk.h>

Is this include used? Otherwise should see clk-provider.h included here.

> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/bitfield.h>
> +
> +#include "clk.h"
> +
> +/* PLL CFGs */
> +#define PLL_CFG0               0x0
> +#define PLL_CFG1               0x4
> +#define PLL_CFG2               0x8
> +
> +#define PLL_DIVF1_MASK         GENMASK(18, 13)
> +#define PLL_DIVF2_MASK         GENMASK(12, 7)
> +#define PLL_DIVR1_MASK         GENMASK(27, 25)
> +#define PLL_DIVR2_MASK         GENMASK(24, 19)
> +#define PLL_REF_MASK           GENMASK(2, 0)
> +
> +#define PLL_LOCK_MASK          BIT(31)
> +#define PLL_PD_MASK            BIT(7)
> +
> +#define OSC_25M                        25000000
> +#define OSC_27M                        27000000
> +
> +#define PLL_SCCG_LOCK_TIMEOUT  70
> +
> +struct clk_sccg_pll {
> +       struct clk_hw   hw;
> +       void __iomem    *base;
> +};
> +
> +#define to_clk_sccg_pll(_hw) container_of(_hw, struct clk_sccg_pll, hw)
> +
> +static int clk_pll_wait_lock(struct clk_sccg_pll *pll)
> +{
> +       u32 val;
> +
> +       return readl_poll_timeout(pll->base, val, val & PLL_LOCK_MASK, 0,
> +                                       PLL_SCCG_LOCK_TIMEOUT);
> +}
> +
> +static int clk_pll1_is_prepared(struct clk_hw *hw)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       return (val & PLL_PD_MASK) ? 0 : 1;
> +}
> +
> +static unsigned long clk_pll1_recalc_rate(struct clk_hw *hw,
> +                                        unsigned long parent_rate)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val, divf;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG2);
> +       divf = FIELD_GET(PLL_DIVF1_MASK, val);
> +
> +       return parent_rate * 2 * (divf + 1);
> +}
> +
> +static long clk_pll1_round_rate(struct clk_hw *hw, unsigned long rate,
> +                              unsigned long *prate)
> +{
> +       unsigned long parent_rate = *prate;
> +       u32 div;
> +
> +       div = rate / (parent_rate * 2);

Can parent_rate be 0?

> +
> +       return parent_rate * div * 2;
> +}
> +
> +static int clk_pll1_set_rate(struct clk_hw *hw, unsigned long rate,
> +                           unsigned long parent_rate)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val;
> +       u32 divf;
> +
> +       divf = rate / (parent_rate * 2);

Can parent_rate be 0?

> +
> +       val = readl_relaxed(pll->base + PLL_CFG2);
> +       val &= ~PLL_DIVF1_MASK;
> +       val |= FIELD_PREP(PLL_DIVF1_MASK, divf - 1);
> +       writel_relaxed(val, pll->base + PLL_CFG2);
> +
> +       return clk_pll_wait_lock(pll);
> +}
> +
> +static int clk_pll1_prepare(struct clk_hw *hw)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       val &= ~PLL_PD_MASK;
> +       writel_relaxed(val, pll->base + PLL_CFG0);
> +
> +       return clk_pll_wait_lock(pll);
> +}
> +
> +static void clk_pll1_unprepare(struct clk_hw *hw)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       val |= PLL_PD_MASK;
> +       writel_relaxed(val, pll->base + PLL_CFG0);
> +
> +}
> +
> +static unsigned long clk_pll2_recalc_rate(struct clk_hw *hw,
> +                                        unsigned long parent_rate)
> +{
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +       u32 val, ref, divr1, divf1, divr2, divf2;
> +       u64 temp64;
> +
> +       val = readl_relaxed(pll->base + PLL_CFG0);
> +       switch (FIELD_GET(PLL_REF_MASK, val)) {
> +       case 0:
> +               ref = OSC_25M;
> +               break;
> +       case 1:
> +               ref = OSC_27M;
> +               break;
> +       default:
> +               ref = OSC_25M;

Does this information not come through 'parent_rate'?

> +               break;
> +       }
> +
> +       val = readl_relaxed(pll->base + PLL_CFG2);
> +       divr1 = FIELD_GET(PLL_DIVR1_MASK, val);
> +       divr2 = FIELD_GET(PLL_DIVR2_MASK, val);
> +       divf1 = FIELD_GET(PLL_DIVF1_MASK, val);
> +       divf2 = FIELD_GET(PLL_DIVF2_MASK, val);
> +
> +       temp64 = ref * 2;
> +       temp64 *= (divf1 + 1) * (divf2 + 1);
> +
> +       do_div(temp64, (divr1 + 1) * (divr2 + 1));

Nitpicks: A comment with the equation may be helpful to newcomers.

> +
> +       return (unsigned long)temp64;

Drop useless cast please.

> +}
> +
> +static long clk_pll2_round_rate(struct clk_hw *hw, unsigned long rate,
> +                              unsigned long *prate)
> +{
> +       u32 div;
> +       unsigned long parent_rate = *prate;
> +
> +       div = rate / (parent_rate);
> +
> +       return parent_rate * div;
> +}
> +
> +static int clk_pll2_set_rate(struct clk_hw *hw, unsigned long rate,
> +                           unsigned long parent_rate)
> +{
> +       u32 val;
> +       u32 divf;
> +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> +
> +       divf = rate / (parent_rate);

Drop useless parenthesis please.

> +
> +       val = readl_relaxed(pll->base + PLL_CFG2);
> +       val &= ~PLL_DIVF2_MASK;
> +       val |= FIELD_PREP(PLL_DIVF2_MASK, divf - 1);
> +       writel_relaxed(val, pll->base + PLL_CFG2);
> +
> +       return clk_pll_wait_lock(pll);
> +}
> +
> +static const struct clk_ops clk_sccg_pll1_ops = {
> +       .is_prepared    = clk_pll1_is_prepared,
> +       .recalc_rate    = clk_pll1_recalc_rate,
> +       .round_rate     = clk_pll1_round_rate,
> +       .set_rate       = clk_pll1_set_rate,
> +};
> +
> +static const struct clk_ops clk_sccg_pll2_ops = {
> +       .prepare        = clk_pll1_prepare,
> +       .unprepare      = clk_pll1_unprepare,
> +       .recalc_rate    = clk_pll2_recalc_rate,
> +       .round_rate     = clk_pll2_round_rate,
> +       .set_rate       = clk_pll2_set_rate,
> +};
> +
> +struct clk *imx_clk_sccg_pll(const char *name,
> +                               const char *parent_name,
> +                               void __iomem *base,
> +                               enum imx_sccg_pll_type pll_type)
> +{
> +       struct clk_sccg_pll *pll;
> +       struct clk *clk;
> +       struct clk_init_data init;
> +
> +       pll = kzalloc(sizeof(*pll), GFP_KERNEL);
> +       if (!pll)
> +               return ERR_PTR(-ENOMEM);
> +
> +       pll->base = base;
> +       init.name = name;
> +       switch (pll_type) {
> +       case SCCG_PLL1:
> +               init.ops = &clk_sccg_pll1_ops;
> +               break;
> +       case SCCG_PLL2:
> +               init.ops = &clk_sccg_pll2_ops;
> +               break;
> +       default:
> +               kfree(pll);
> +               return ERR_PTR(-EINVAL);

Do this case statement before allocating? So that kfree() isn't required
here?

> +       }
> +
> +       init.flags = 0;
> +       init.parent_names = &parent_name;
> +       init.num_parents = 1;
> +
> +       pll->hw.init = &init;
> +
> +       clk = clk_register(NULL, &pll->hw);

Any chance to use clk_hw based registration APIs?

> +       if (IS_ERR(clk))
> +               kfree(pll);
> +
> +       return clk;

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Abel Vesa]

On Wed, Oct 17, 2018 at 12:55:52PM -0700, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-09-24 03:39:55)
> > diff --git a/drivers/clk/imx/clk-sccg-pll.c b/drivers/clk/imx/clk-sccg-pll.c
> > new file mode 100644
> > index 0000000..a9837fa
> > --- /dev/null
> > +++ b/drivers/clk/imx/clk-sccg-pll.c
> > @@ -0,0 +1,237 @@
> > +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > +/*
> > + * Copyright 2018 NXP.
> > + */
> > +
> > +#include <linux/clk.h>
> 
> Is this include used? Otherwise should see clk-provider.h included here.
> 

Fixed in the next version.

> > +#include <linux/err.h>
> > +#include <linux/io.h>
> > +#include <linux/iopoll.h>
> > +#include <linux/slab.h>
> > +#include <linux/delay.h>
> > +#include <linux/bitfield.h>
> > +
> > +#include "clk.h"
> > +
> > +/* PLL CFGs */
> > +#define PLL_CFG0               0x0
> > +#define PLL_CFG1               0x4
> > +#define PLL_CFG2               0x8
> > +
> > +#define PLL_DIVF1_MASK         GENMASK(18, 13)
> > +#define PLL_DIVF2_MASK         GENMASK(12, 7)
> > +#define PLL_DIVR1_MASK         GENMASK(27, 25)
> > +#define PLL_DIVR2_MASK         GENMASK(24, 19)
> > +#define PLL_REF_MASK           GENMASK(2, 0)
> > +
> > +#define PLL_LOCK_MASK          BIT(31)
> > +#define PLL_PD_MASK            BIT(7)
> > +
> > +#define OSC_25M                        25000000
> > +#define OSC_27M                        27000000
> > +
> > +#define PLL_SCCG_LOCK_TIMEOUT  70
> > +
> > +struct clk_sccg_pll {
> > +       struct clk_hw   hw;
> > +       void __iomem    *base;
> > +};
> > +
> > +#define to_clk_sccg_pll(_hw) container_of(_hw, struct clk_sccg_pll, hw)
> > +
> > +static int clk_pll_wait_lock(struct clk_sccg_pll *pll)
> > +{
> > +       u32 val;
> > +
> > +       return readl_poll_timeout(pll->base, val, val & PLL_LOCK_MASK, 0,
> > +                                       PLL_SCCG_LOCK_TIMEOUT);
> > +}
> > +
> > +static int clk_pll1_is_prepared(struct clk_hw *hw)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       return (val & PLL_PD_MASK) ? 0 : 1;
> > +}
> > +
> > +static unsigned long clk_pll1_recalc_rate(struct clk_hw *hw,
> > +                                        unsigned long parent_rate)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val, divf;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > +       divf = FIELD_GET(PLL_DIVF1_MASK, val);
> > +
> > +       return parent_rate * 2 * (divf + 1);
> > +}
> > +
> > +static long clk_pll1_round_rate(struct clk_hw *hw, unsigned long rate,
> > +                              unsigned long *prate)
> > +{
> > +       unsigned long parent_rate = *prate;
> > +       u32 div;
> > +
> > +       div = rate / (parent_rate * 2);
> 
> Can parent_rate be 0?
> 

Fixed in the next version.

> > +
> > +       return parent_rate * div * 2;
> > +}
> > +
> > +static int clk_pll1_set_rate(struct clk_hw *hw, unsigned long rate,
> > +                           unsigned long parent_rate)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val;
> > +       u32 divf;
> > +
> > +       divf = rate / (parent_rate * 2);
> 
> Can parent_rate be 0?
> 

Fixed in the next version.

> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > +       val &= ~PLL_DIVF1_MASK;
> > +       val |= FIELD_PREP(PLL_DIVF1_MASK, divf - 1);
> > +       writel_relaxed(val, pll->base + PLL_CFG2);
> > +
> > +       return clk_pll_wait_lock(pll);
> > +}
> > +
> > +static int clk_pll1_prepare(struct clk_hw *hw)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       val &= ~PLL_PD_MASK;
> > +       writel_relaxed(val, pll->base + PLL_CFG0);
> > +
> > +       return clk_pll_wait_lock(pll);
> > +}
> > +
> > +static void clk_pll1_unprepare(struct clk_hw *hw)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       val |= PLL_PD_MASK;
> > +       writel_relaxed(val, pll->base + PLL_CFG0);
> > +
> > +}
> > +
> > +static unsigned long clk_pll2_recalc_rate(struct clk_hw *hw,
> > +                                        unsigned long parent_rate)
> > +{
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +       u32 val, ref, divr1, divf1, divr2, divf2;
> > +       u64 temp64;
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > +       switch (FIELD_GET(PLL_REF_MASK, val)) {
> > +       case 0:
> > +               ref = OSC_25M;
> > +               break;
> > +       case 1:
> > +               ref = OSC_27M;
> > +               break;
> > +       default:
> > +               ref = OSC_25M;
> 
> Does this information not come through 'parent_rate'?
> 

No. So basically both pll1 and pll2 and the divider after it form together this SCCG:

https://www.nxp.com/docs/en/reference-manual/IMX8MDQLQRM.pdf#page=834

See: Figure 5-8. SSCG PLL Block Diagram

We're basically reading the input of the pll 1 in order to compute the output of the entire SCCG.

I know it's a mess. I'm working on cleaning it up, but for now we need this in in order to boot up.

> > +               break;
> > +       }
> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > +       divr1 = FIELD_GET(PLL_DIVR1_MASK, val);
> > +       divr2 = FIELD_GET(PLL_DIVR2_MASK, val);
> > +       divf1 = FIELD_GET(PLL_DIVF1_MASK, val);
> > +       divf2 = FIELD_GET(PLL_DIVF2_MASK, val);
> > +
> > +       temp64 = ref * 2;
> > +       temp64 *= (divf1 + 1) * (divf2 + 1);
> > +
> > +       do_div(temp64, (divr1 + 1) * (divr2 + 1));
> 
> Nitpicks: A comment with the equation may be helpful to newcomers.

Since the SCCG is contructed by multiple different types of clocks here, the equation doesn't help
since it is spread in all constructing blocks.

> 
> > +
> > +       return (unsigned long)temp64;
> 
> Drop useless cast please.
> 

Fixed in the next version.

> > +}
> > +
> > +static long clk_pll2_round_rate(struct clk_hw *hw, unsigned long rate,
> > +                              unsigned long *prate)
> > +{
> > +       u32 div;
> > +       unsigned long parent_rate = *prate;
> > +
> > +       div = rate / (parent_rate);
> > +
> > +       return parent_rate * div;
> > +}
> > +
> > +static int clk_pll2_set_rate(struct clk_hw *hw, unsigned long rate,
> > +                           unsigned long parent_rate)
> > +{
> > +       u32 val;
> > +       u32 divf;
> > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > +
> > +       divf = rate / (parent_rate);
> 
> Drop useless parenthesis please.
> 

Fixed in the next version.

> > +
> > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > +       val &= ~PLL_DIVF2_MASK;
> > +       val |= FIELD_PREP(PLL_DIVF2_MASK, divf - 1);
> > +       writel_relaxed(val, pll->base + PLL_CFG2);
> > +
> > +       return clk_pll_wait_lock(pll);
> > +}
> > +
> > +static const struct clk_ops clk_sccg_pll1_ops = {
> > +       .is_prepared    = clk_pll1_is_prepared,
> > +       .recalc_rate    = clk_pll1_recalc_rate,
> > +       .round_rate     = clk_pll1_round_rate,
> > +       .set_rate       = clk_pll1_set_rate,
> > +};
> > +
> > +static const struct clk_ops clk_sccg_pll2_ops = {
> > +       .prepare        = clk_pll1_prepare,
> > +       .unprepare      = clk_pll1_unprepare,
> > +       .recalc_rate    = clk_pll2_recalc_rate,
> > +       .round_rate     = clk_pll2_round_rate,
> > +       .set_rate       = clk_pll2_set_rate,
> > +};
> > +
> > +struct clk *imx_clk_sccg_pll(const char *name,
> > +                               const char *parent_name,
> > +                               void __iomem *base,
> > +                               enum imx_sccg_pll_type pll_type)
> > +{
> > +       struct clk_sccg_pll *pll;
> > +       struct clk *clk;
> > +       struct clk_init_data init;
> > +
> > +       pll = kzalloc(sizeof(*pll), GFP_KERNEL);
> > +       if (!pll)
> > +               return ERR_PTR(-ENOMEM);
> > +
> > +       pll->base = base;
> > +       init.name = name;
> > +       switch (pll_type) {
> > +       case SCCG_PLL1:
> > +               init.ops = &clk_sccg_pll1_ops;
> > +               break;
> > +       case SCCG_PLL2:
> > +               init.ops = &clk_sccg_pll2_ops;
> > +               break;
> > +       default:
> > +               kfree(pll);
> > +               return ERR_PTR(-EINVAL);
> 
> Do this case statement before allocating? So that kfree() isn't required
> here?
> 

Fixed in the next version.

> > +       }
> > +
> > +       init.flags = 0;
> > +       init.parent_names = &parent_name;
> > +       init.num_parents = 1;
> > +
> > +       pll->hw.init = &init;
> > +
> > +       clk = clk_register(NULL, &pll->hw);
> 
> Any chance to use clk_hw based registration APIs?
> 

Fixed in the next version.

> > +       if (IS_ERR(clk))
> > +               kfree(pll);
> > +
> > +       return clk;

-- 

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Stephen Boyd]

Quoting Abel Vesa (2018-11-07 03:54:45)
> On Wed, Oct 17, 2018 at 12:55:52PM -0700, Stephen Boyd wrote:
> > Quoting Abel Vesa (2018-09-24 03:39:55)
> > > +static unsigned long clk_pll2_recalc_rate(struct clk_hw *hw,
> > > +                                        unsigned long parent_rate)
> > > +{
> > > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > > +       u32 val, ref, divr1, divf1, divr2, divf2;
> > > +       u64 temp64;
> > > +
> > > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > > +       switch (FIELD_GET(PLL_REF_MASK, val)) {
> > > +       case 0:
> > > +               ref = OSC_25M;
> > > +               break;
> > > +       case 1:
> > > +               ref = OSC_27M;
> > > +               break;
> > > +       default:
> > > +               ref = OSC_25M;
> > 
> > Does this information not come through 'parent_rate'?
> > 
> 
> No. So basically both pll1 and pll2 and the divider after it form together this SCCG:
> 
> https://www.nxp.com/docs/en/reference-manual/IMX8MDQLQRM.pdf#page=834
> 
> See: Figure 5-8. SSCG PLL Block Diagram

Thanks for the link!

> 
> We're basically reading the input of the pll 1 in order to compute the output of the entire SCCG.
> 
> I know it's a mess. I'm working on cleaning it up, but for now we need this in in order to boot up.

What's the plan to clean it up?

> 
> > > +               break;
> > > +       }
> > > +
> > > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > > +       divr1 = FIELD_GET(PLL_DIVR1_MASK, val);
> > > +       divr2 = FIELD_GET(PLL_DIVR2_MASK, val);
> > > +       divf1 = FIELD_GET(PLL_DIVF1_MASK, val);
> > > +       divf2 = FIELD_GET(PLL_DIVF2_MASK, val);
> > > +
> > > +       temp64 = ref * 2;
> > > +       temp64 *= (divf1 + 1) * (divf2 + 1);
> > > +
> > > +       do_div(temp64, (divr1 + 1) * (divr2 + 1));
> > 
> > Nitpicks: A comment with the equation may be helpful to newcomers.
> 
> Since the SCCG is contructed by multiple different types of clocks here, the equation doesn't help
> since it is spread in all constructing blocks.

Ok.

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Abel Vesa]

On Wed, Nov 07, 2018 at 11:01:02AM -0800, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-11-07 03:54:45)
> > On Wed, Oct 17, 2018 at 12:55:52PM -0700, Stephen Boyd wrote:
> > > Quoting Abel Vesa (2018-09-24 03:39:55)
> > > > +static unsigned long clk_pll2_recalc_rate(struct clk_hw *hw,
> > > > +                                        unsigned long parent_rate)
> > > > +{
> > > > +       struct clk_sccg_pll *pll = to_clk_sccg_pll(hw);
> > > > +       u32 val, ref, divr1, divf1, divr2, divf2;
> > > > +       u64 temp64;
> > > > +
> > > > +       val = readl_relaxed(pll->base + PLL_CFG0);
> > > > +       switch (FIELD_GET(PLL_REF_MASK, val)) {
> > > > +       case 0:
> > > > +               ref = OSC_25M;
> > > > +               break;
> > > > +       case 1:
> > > > +               ref = OSC_27M;
> > > > +               break;
> > > > +       default:
> > > > +               ref = OSC_25M;
> > > 
> > > Does this information not come through 'parent_rate'?
> > > 
> > 
> > No. So basically both pll1 and pll2 and the divider after it form together this SCCG:
> > 
> > https://www.nxp.com/docs/en/reference-manual/IMX8MDQLQRM.pdf#page=834
> > 
> > See: Figure 5-8. SSCG PLL Block Diagram
> 
> Thanks for the link!
> 
> > 
> > We're basically reading the input of the pll 1 in order to compute the output of the entire SCCG.
> > 
> > I know it's a mess. I'm working on cleaning it up, but for now we need this in in order to boot up.
> 
> What's the plan to clean it up?

So I'm doing this in our internal tree first to make sure I don't break the
other (newer) socs.

I already have a prototype in testing but it's a long way to upstream it.

Basically, I'm replacing all of this with a single, more like a composite,
more complex, clock type that does all the magic inside.

One of the problems is the fact that the bypasses can have the same sources
and in my case, I'm implementing that as a list of parents name, but the
parent names list doesn't work with duplicates, so I have to find some other
way to do it.

Once I have something clean and tested enough I'll send it upstream.

> 
> > 
> > > > +               break;
> > > > +       }
> > > > +
> > > > +       val = readl_relaxed(pll->base + PLL_CFG2);
> > > > +       divr1 = FIELD_GET(PLL_DIVR1_MASK, val);
> > > > +       divr2 = FIELD_GET(PLL_DIVR2_MASK, val);
> > > > +       divf1 = FIELD_GET(PLL_DIVF1_MASK, val);
> > > > +       divf2 = FIELD_GET(PLL_DIVF2_MASK, val);
> > > > +
> > > > +       temp64 = ref * 2;
> > > > +       temp64 *= (divf1 + 1) * (divf2 + 1);
> > > > +
> > > > +       do_div(temp64, (divr1 + 1) * (divr2 + 1));
> > > 
> > > Nitpicks: A comment with the equation may be helpful to newcomers.
> > 
> > Since the SCCG is contructed by multiple different types of clocks here, the equation doesn't help
> > since it is spread in all constructing blocks.
> 
> Ok.
> 

-- 

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Stephen Boyd]

Quoting Abel Vesa (2018-11-07 12:26:25)
> On Wed, Nov 07, 2018 at 11:01:02AM -0800, Stephen Boyd wrote:
> > 
> > 
> > What's the plan to clean it up?
> 
> So I'm doing this in our internal tree first to make sure I don't break the
> other (newer) socs.
> 
> I already have a prototype in testing but it's a long way to upstream it.
> 
> Basically, I'm replacing all of this with a single, more like a composite,
> more complex, clock type that does all the magic inside.
> 
> One of the problems is the fact that the bypasses can have the same sources
> and in my case, I'm implementing that as a list of parents name, but the
> parent names list doesn't work with duplicates, so I have to find some other
> way to do it.
> 
> Once I have something clean and tested enough I'll send it upstream.

Ok. Thanks for the info.

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Abel Vesa]

On Wed, Nov 07, 2018 at 04:18:35PM -0800, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-11-07 12:26:25)
> > On Wed, Nov 07, 2018 at 11:01:02AM -0800, Stephen Boyd wrote:
> > > 
> > > 
> > > What's the plan to clean it up?
> > 
> > So I'm doing this in our internal tree first to make sure I don't break the
> > other (newer) socs.
> > 
> > I already have a prototype in testing but it's a long way to upstream it.
> > 
> > Basically, I'm replacing all of this with a single, more like a composite,
> > more complex, clock type that does all the magic inside.
> > 
> > One of the problems is the fact that the bypasses can have the same sources
> > and in my case, I'm implementing that as a list of parents name, but the
> > parent names list doesn't work with duplicates, so I have to find some other
> > way to do it.
> > 
> > Once I have something clean and tested enough I'll send it upstream.
> 
> Ok. Thanks for the info.
> 

Just to avoid any kind of confusion.

The whole refactoring of the SCCG clock will be done in a separate (later) change
and will not be part of this patchset.

I already sent the 12th version of this current patch series and I would really
like to get this in ASAP so that the booting up of imx8mq will not be delayed.

Thanks
Abel

-- 

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Stephen Boyd]

Quoting Abel Vesa (2018-11-08 04:29:39)
> On Wed, Nov 07, 2018 at 04:18:35PM -0800, Stephen Boyd wrote:
> > Quoting Abel Vesa (2018-11-07 12:26:25)
> > > On Wed, Nov 07, 2018 at 11:01:02AM -0800, Stephen Boyd wrote:
> > > > 
> > > > 
> > > > What's the plan to clean it up?
> > > 
> > > So I'm doing this in our internal tree first to make sure I don't break the
> > > other (newer) socs.
> > > 
> > > I already have a prototype in testing but it's a long way to upstream it.
> > > 
> > > Basically, I'm replacing all of this with a single, more like a composite,
> > > more complex, clock type that does all the magic inside.
> > > 
> > > One of the problems is the fact that the bypasses can have the same sources
> > > and in my case, I'm implementing that as a list of parents name, but the
> > > parent names list doesn't work with duplicates, so I have to find some other
> > > way to do it.
> > > 
> > > Once I have something clean and tested enough I'll send it upstream.
> > 
> > Ok. Thanks for the info.
> > 
> 
> Just to avoid any kind of confusion.
> 
> The whole refactoring of the SCCG clock will be done in a separate (later) change
> and will not be part of this patchset.
> 
> I already sent the 12th version of this current patch series and I would really
> like to get this in ASAP so that the booting up of imx8mq will not be delayed.
> 

Ok. Well we're in rc1 right now, and so we're not merging new drivers
into mainline. I can merge the clk driver into clk-next, but you'll have
to wait for the stabilization period to end (approximately 6 or 7 weeks)
before this can get into the next kernel version. It will be in
linux-next much sooner of course.

RE: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[A.s. Dong]

Hi Stephen,

[...]
> > I already sent the 12th version of this current patch series and I
> > would really like to get this in ASAP so that the booting up of imx8mq will
> not be delayed.
> >
> 
> Ok. Well we're in rc1 right now, and so we're not merging new drivers into
> mainline. I can merge the clk driver into clk-next, but you'll have to wait for the
> stabilization period to end (approximately 6 or 7 weeks) before this can get
> into the next kernel version. It will be in linux-next much sooner of course.

That would be great if you can help that.
We're now working with SUSE to enable i.MX8 support.
Their criteria is only backporting patches which must be at least in maintainer's
next tree already. So either picked up by you or Shawn would help a lot on it.

BTW, one simple question is that because MX8MQ DTS patches depends on
this clock driver series. How would you suggest this series to go through
your tree or Shawn's tree?

Regards
Dong Aisheng

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Shawn Guo]

On Sat, Nov 10, 2018 at 04:05:44PM +0000, A.s. Dong wrote:
> Hi Stephen,
> 
> [...]
> > > I already sent the 12th version of this current patch series and I
> > > would really like to get this in ASAP so that the booting up of imx8mq will
> > not be delayed.
> > >
> > 
> > Ok. Well we're in rc1 right now, and so we're not merging new drivers into
> > mainline. I can merge the clk driver into clk-next, but you'll have to wait for the
> > stabilization period to end (approximately 6 or 7 weeks) before this can get
> > into the next kernel version. It will be in linux-next much sooner of course.
> 
> That would be great if you can help that.
> We're now working with SUSE to enable i.MX8 support.
> Their criteria is only backporting patches which must be at least in maintainer's
> next tree already. So either picked up by you or Shawn would help a lot on it.
> 
> BTW, one simple question is that because MX8MQ DTS patches depends on
> this clock driver series. How would you suggest this series to go through
> your tree or Shawn's tree?

Once Stephen has a topic branch for the patches, I can pull it into my
tree to resolve the DT dependency.

Shawn

Re: [PATCH v9 3/5] clk: imx: add SCCG PLL type

[Stephen Boyd]

Quoting Shawn Guo (2018-11-13 06:25:36)
> On Sat, Nov 10, 2018 at 04:05:44PM +0000, A.s. Dong wrote:
> > Hi Stephen,
> > 
> > [...]
> > > > I already sent the 12th version of this current patch series and I
> > > > would really like to get this in ASAP so that the booting up of imx8mq will
> > > not be delayed.
> > > >
> > > 
> > > Ok. Well we're in rc1 right now, and so we're not merging new drivers into
> > > mainline. I can merge the clk driver into clk-next, but you'll have to wait for the
> > > stabilization period to end (approximately 6 or 7 weeks) before this can get
> > > into the next kernel version. It will be in linux-next much sooner of course.
> > 
> > That would be great if you can help that.
> > We're now working with SUSE to enable i.MX8 support.
> > Their criteria is only backporting patches which must be at least in maintainer's
> > next tree already. So either picked up by you or Shawn would help a lot on it.
> > 
> > BTW, one simple question is that because MX8MQ DTS patches depends on
> > this clock driver series. How would you suggest this series to go through
> > your tree or Shawn's tree?
> 
> Once Stephen has a topic branch for the patches, I can pull it into my
> tree to resolve the DT dependency.
> 

Sounds like a plan. Expect something next week.

[PATCH v9 4/5] clk: imx: add imx composite clock

[Abel Vesa]

Since a lot of clocks on imx8 are formed by a mux, gate, predivider and
divider, the idea here is to combine all of those into one composite clock,
but we need to deal with both predivider and divider at the same time and
therefore we add the imx_clk_composite_divider_ops and register
the composite clock with those.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Suggested-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/clk/imx/Makefile        |   1 +
 drivers/clk/imx/clk-composite.c | 181 ++++++++++++++++++++++++++++++++++++++++
 drivers/clk/imx/clk.h           |  14 ++++
 3 files changed, 196 insertions(+)
 create mode 100644 drivers/clk/imx/clk-composite.c

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index b87513c..4fabb0a 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -3,6 +3,7 @@
 obj-y += \
 	clk.o \
 	clk-busy.o \
+	clk-composite.o \
 	clk-cpu.o \
 	clk-fixup-div.o \
 	clk-fixup-mux.o \
diff --git a/drivers/clk/imx/clk-composite.c b/drivers/clk/imx/clk-composite.c
new file mode 100644
index 0000000..4b03107
--- /dev/null
+++ b/drivers/clk/imx/clk-composite.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+
+#include "clk.h"
+
+#define PCG_PREDIV_SHIFT	16
+#define PCG_PREDIV_WIDTH	3
+#define PCG_PREDIV_MAX		8
+
+#define PCG_DIV_SHIFT		0
+#define PCG_DIV_WIDTH		6
+#define PCG_DIV_MAX		64
+
+#define PCG_PCS_SHIFT		24
+#define PCG_PCS_MASK		0x7
+
+#define PCG_CGC_SHIFT		28
+
+static unsigned long imx_clk_composite_divider_recalc_rate(struct clk_hw *hw,
+						unsigned long parent_rate)
+{
+	struct clk_divider *divider = to_clk_divider(hw);
+	unsigned long prediv_rate;
+	unsigned int prediv_value;
+	unsigned int div_value;
+
+	prediv_value = clk_readl(divider->reg) >> divider->shift;
+	prediv_value &= clk_div_mask(divider->width);
+
+	prediv_rate = divider_recalc_rate(hw, parent_rate, prediv_value,
+						NULL, divider->flags,
+						divider->width);
+
+	div_value = clk_readl(divider->reg) >> PCG_DIV_SHIFT;
+	div_value &= clk_div_mask(PCG_DIV_WIDTH);
+
+	return divider_recalc_rate(hw, prediv_rate, div_value, NULL,
+				   divider->flags, PCG_DIV_WIDTH);
+}
+
+static int imx_clk_composite_compute_dividers(unsigned long rate,
+						unsigned long parent_rate,
+						int *prediv, int *postdiv)
+{
+	int div1, div2;
+	int error = INT_MAX;
+	int ret = -EINVAL;
+
+	/* default values */
+	*prediv = 1;
+	*postdiv = 1;
+
+	for (div1 = 1; div1 <= PCG_PREDIV_MAX; div1++) {
+		for (div2 = 1; div2 <= PCG_DIV_MAX; div2++) {
+			int new_error = ((parent_rate / div1) / div2) - rate;
+
+			if (abs(new_error) < abs(error)) {
+				*prediv = div1;
+				*postdiv = div2;
+				error = new_error;
+				ret = 0;
+			}
+		}
+	}
+	return ret;
+}
+
+static long imx_clk_composite_divider_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *prate)
+{
+	int prediv_value;
+	int div_value;
+
+	imx_clk_composite_compute_dividers(rate, *prate,
+						&prediv_value, &div_value);
+
+	rate = DIV_ROUND_UP_ULL((u64)*prate, prediv_value);
+	rate = DIV_ROUND_UP_ULL((u64)rate, div_value);
+
+	return rate;
+}
+
+static int imx_clk_composite_divider_set_rate(struct clk_hw *hw,
+					unsigned long rate,
+					unsigned long parent_rate)
+{
+	struct clk_divider *divider = to_clk_divider(hw);
+	unsigned long flags = 0;
+	int prediv_value;
+	int div_value;
+	int ret = 0;
+	u32 val;
+
+	ret = imx_clk_composite_compute_dividers(rate, parent_rate,
+						&prediv_value, &div_value);
+	if (ret)
+		return -EINVAL;
+
+	spin_lock_irqsave(divider->lock, flags);
+
+	val = clk_readl(divider->reg);
+	val &= ~((clk_div_mask(divider->width) << divider->shift) |
+			(clk_div_mask(PCG_DIV_WIDTH) << PCG_DIV_SHIFT));
+
+	val |= (u32)(prediv_value  - 1) << divider->shift;
+	val |= (u32)(div_value - 1) << PCG_DIV_SHIFT;
+	clk_writel(val, divider->reg);
+
+	spin_unlock_irqrestore(divider->lock, flags);
+
+	return ret;
+}
+
+static const struct clk_ops imx_clk_composite_divider_ops = {
+	.recalc_rate = imx_clk_composite_divider_recalc_rate,
+	.round_rate = imx_clk_composite_divider_round_rate,
+	.set_rate = imx_clk_composite_divider_set_rate,
+};
+
+struct clk *imx_clk_composite_flags(const char *name,
+					const char **parent_names,
+					int num_parents, void __iomem *reg,
+					unsigned long flags)
+{
+	struct clk_hw *mux_hw = NULL, *div_hw = NULL, *gate_hw = NULL;
+	struct clk_divider *div = NULL;
+	struct clk_gate *gate = NULL;
+	struct clk_mux *mux = NULL;
+	struct clk *clk = ERR_PTR(-ENOMEM);
+
+	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		goto fail;
+
+	mux_hw = &mux->hw;
+	mux->reg = reg;
+	mux->shift = PCG_PCS_SHIFT;
+	mux->mask = PCG_PCS_MASK;
+
+	div = kzalloc(sizeof(*div), GFP_KERNEL);
+	if (!div)
+		goto fail;
+
+	div_hw = &div->hw;
+	div->reg = reg;
+	div->shift = PCG_PREDIV_SHIFT;
+	div->width = PCG_PREDIV_WIDTH;
+	div->lock = &imx_ccm_lock;
+	div->flags = CLK_DIVIDER_ROUND_CLOSEST;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		goto fail;
+
+	gate_hw = &gate->hw;
+	gate->reg = reg;
+	gate->bit_idx = PCG_CGC_SHIFT;
+
+	clk = clk_register_composite(NULL, name, parent_names, num_parents,
+					mux_hw, &clk_mux_ops, div_hw,
+					&imx_clk_composite_divider_ops, gate_hw,
+					&clk_gate_ops, flags);
+	if (IS_ERR(clk))
+		goto fail;
+
+	return clk;
+
+fail:
+	kfree(gate);
+	kfree(div);
+	kfree(mux);
+	return clk;
+}
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 12b3fd6..9d7c9c8 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -232,4 +232,18 @@ struct clk *imx_clk_cpu(const char *name, const char *parent_name,
 		struct clk *div, struct clk *mux, struct clk *pll,
 		struct clk *step);
 
+struct clk *imx_clk_composite_flags(const char *name, const char **parent_names,
+		int num_parents, void __iomem *reg, unsigned long flags);
+
+#define __imx_clk_composite(name, parent_names, reg, flags) \
+	imx_clk_composite_flags(name, parent_names, \
+		ARRAY_SIZE(parent_names), reg, \
+		flags | CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+
+#define imx_clk_composite(name, parent_names, reg) \
+	__imx_clk_composite(name, parent_names, reg, 0)
+
+#define imx_clk_composite_critical(name, parent_names, reg) \
+	__imx_clk_composite(name, parent_names, reg, CLK_IS_CRITICAL)
+
 #endif
-- 
2.7.4

Re: [PATCH v9 4/5] clk: imx: add imx composite clock

[Fabio Estevam]

Hi Abel,

On Mon, Sep 24, 2018 at 7:39 AM, Abel Vesa <abel.vesa@nxp.com> wrote:

> +static long imx_clk_composite_divider_round_rate(struct clk_hw *hw,
> +                                               unsigned long rate,
> +                                               unsigned long *prate)
> +{
> +       int prediv_value;
> +       int div_value;
> +
> +       imx_clk_composite_compute_dividers(rate, *prate,
> +                                               &prediv_value, &div_value);
> +
> +       rate = DIV_ROUND_UP_ULL((u64)*prate, prediv_value);

You assing a value to 'rate' here.

> +       rate = DIV_ROUND_UP_ULL((u64)rate, div_value);

And then overwrite it immediately after.

Is this really the intended behavior?

Re: [PATCH v9 4/5] clk: imx: add imx composite clock

[Sascha Hauer]

On Tue, Sep 25, 2018 at 01:42:12PM -0300, Fabio Estevam wrote:
> Hi Abel,
> 
> On Mon, Sep 24, 2018 at 7:39 AM, Abel Vesa <abel.vesa@nxp.com> wrote:
> 
> > +static long imx_clk_composite_divider_round_rate(struct clk_hw *hw,
> > +                                               unsigned long rate,
> > +                                               unsigned long *prate)
> > +{
> > +       int prediv_value;
> > +       int div_value;
> > +
> > +       imx_clk_composite_compute_dividers(rate, *prate,
> > +                                               &prediv_value, &div_value);
> > +
> > +       rate = DIV_ROUND_UP_ULL((u64)*prate, prediv_value);
> 
> You assing a value to 'rate' here.
> 
> > +       rate = DIV_ROUND_UP_ULL((u64)rate, div_value);
> 
> And then overwrite it immediately after.

It's:
	rate = *prate / prediv_value;
	rate = rate / div_value;

To me this looks correct. However, For an unsigned long type we have
DIV_ROUND_UP() with which we do not need any casting. For 64bit code
unsigned long is 64bit anyway which makes the cast a no-op and for 32bit
code there's also no point in exanding the initial 32bit value to 64bit.

Sascha

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Re: [PATCH v9 4/5] clk: imx: add imx composite clock

[Fabio Estevam]

Hi Sascha,

On Wed, Sep 26, 2018 at 3:47 AM, Sascha Hauer <s.hauer@pengutronix.de> wrote:

> It's:
>         rate = *prate / prediv_value;
>         rate = rate / div_value;

Yes, this looks correct. Thanks for the feedback.

> To me this looks correct. However, For an unsigned long type we have
> DIV_ROUND_UP() with which we do not need any casting. For 64bit code
> unsigned long is 64bit anyway which makes the cast a no-op and for 32bit
> code there's also no point in exanding the initial 32bit value to 64bit.

That's a good point too.

Thanks

Re: [PATCH v9 4/5] clk: imx: add imx composite clock

[Stephen Boyd]

Quoting Abel Vesa (2018-09-24 03:39:56)
> diff --git a/drivers/clk/imx/clk-composite.c b/drivers/clk/imx/clk-composite.c
> new file mode 100644
> index 0000000..4b03107
> --- /dev/null
> +++ b/drivers/clk/imx/clk-composite.c
> @@ -0,0 +1,181 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2018 NXP
> + */
> +
> +#include <linux/errno.h>
> +#include <linux/slab.h>
> +#include <linux/clk-provider.h>
> +#include <linux/clk.h>

Is this include used?

> +
> +#include "clk.h"
> +
> +#define PCG_PREDIV_SHIFT       16
> +#define PCG_PREDIV_WIDTH       3
> +#define PCG_PREDIV_MAX         8
> +
> +#define PCG_DIV_SHIFT          0
> +#define PCG_DIV_WIDTH          6
> +#define PCG_DIV_MAX            64
> +
> +#define PCG_PCS_SHIFT          24
> +#define PCG_PCS_MASK           0x7
> +
> +#define PCG_CGC_SHIFT          28
> +
> +static unsigned long imx_clk_composite_divider_recalc_rate(struct clk_hw *hw,
> +                                               unsigned long parent_rate)
> +{
> +       struct clk_divider *divider = to_clk_divider(hw);
> +       unsigned long prediv_rate;
> +       unsigned int prediv_value;
> +       unsigned int div_value;
> +
> +       prediv_value = clk_readl(divider->reg) >> divider->shift;
> +       prediv_value &= clk_div_mask(divider->width);
> +
> +       prediv_rate = divider_recalc_rate(hw, parent_rate, prediv_value,
> +                                               NULL, divider->flags,
> +                                               divider->width);
> +
> +       div_value = clk_readl(divider->reg) >> PCG_DIV_SHIFT;
> +       div_value &= clk_div_mask(PCG_DIV_WIDTH);
> +
> +       return divider_recalc_rate(hw, prediv_rate, div_value, NULL,
> +                                  divider->flags, PCG_DIV_WIDTH);
> +}
> +
> +static int imx_clk_composite_compute_dividers(unsigned long rate,
> +                                               unsigned long parent_rate,
> +                                               int *prediv, int *postdiv)
> +{
> +       int div1, div2;
> +       int error = INT_MAX;
> +       int ret = -EINVAL;
> +
> +       /* default values */
> +       *prediv = 1;
> +       *postdiv = 1;
> +
> +       for (div1 = 1; div1 <= PCG_PREDIV_MAX; div1++) {
> +               for (div2 = 1; div2 <= PCG_DIV_MAX; div2++) {
> +                       int new_error = ((parent_rate / div1) / div2) - rate;
> +
> +                       if (abs(new_error) < abs(error)) {
> +                               *prediv = div1;
> +                               *postdiv = div2;
> +                               error = new_error;
> +                               ret = 0;
> +                       }
> +               }
> +       }
> +       return ret;
> +}
> +
> +static long imx_clk_composite_divider_round_rate(struct clk_hw *hw,
> +                                               unsigned long rate,
> +                                               unsigned long *prate)
> +{
> +       int prediv_value;
> +       int div_value;
> +
> +       imx_clk_composite_compute_dividers(rate, *prate,
> +                                               &prediv_value, &div_value);
> +
> +       rate = DIV_ROUND_UP_ULL((u64)*prate, prediv_value);
> +       rate = DIV_ROUND_UP_ULL((u64)rate, div_value);
> +
> +       return rate;

Looks the same as another patch, maybe it is?

Anyway, same nitpick about returning the DIV_ROUND_UP_ULL() result.

> +}
> +
> +static int imx_clk_composite_divider_set_rate(struct clk_hw *hw,
> +                                       unsigned long rate,
> +                                       unsigned long parent_rate)
> +{
> +       struct clk_divider *divider = to_clk_divider(hw);
> +       unsigned long flags = 0;
> +       int prediv_value;
> +       int div_value;
> +       int ret = 0;
> +       u32 val;
> +
> +       ret = imx_clk_composite_compute_dividers(rate, parent_rate,
> +                                               &prediv_value, &div_value);
> +       if (ret)
> +               return -EINVAL;
> +
> +       spin_lock_irqsave(divider->lock, flags);
> +
> +       val = clk_readl(divider->reg);
> +       val &= ~((clk_div_mask(divider->width) << divider->shift) |
> +                       (clk_div_mask(PCG_DIV_WIDTH) << PCG_DIV_SHIFT));
> +
> +       val |= (u32)(prediv_value  - 1) << divider->shift;
> +       val |= (u32)(div_value - 1) << PCG_DIV_SHIFT;
> +       clk_writel(val, divider->reg);

Please don't use clk_writel().

> +
> +       spin_unlock_irqrestore(divider->lock, flags);
> +
> +       return ret;
> +}
> +
> +static const struct clk_ops imx_clk_composite_divider_ops = {
> +       .recalc_rate = imx_clk_composite_divider_recalc_rate,
> +       .round_rate = imx_clk_composite_divider_round_rate,
> +       .set_rate = imx_clk_composite_divider_set_rate,
> +};
> +
> +struct clk *imx_clk_composite_flags(const char *name,
> +                                       const char **parent_names,
> +                                       int num_parents, void __iomem *reg,
> +                                       unsigned long flags)
> +{
> +       struct clk_hw *mux_hw = NULL, *div_hw = NULL, *gate_hw = NULL;
> +       struct clk_divider *div = NULL;
> +       struct clk_gate *gate = NULL;
> +       struct clk_mux *mux = NULL;
> +       struct clk *clk = ERR_PTR(-ENOMEM);
> +
> +       mux = kzalloc(sizeof(*mux), GFP_KERNEL);
> +       if (!mux)
> +               goto fail;
> +
> +       mux_hw = &mux->hw;
> +       mux->reg = reg;
> +       mux->shift = PCG_PCS_SHIFT;
> +       mux->mask = PCG_PCS_MASK;
> +
> +       div = kzalloc(sizeof(*div), GFP_KERNEL);
> +       if (!div)
> +               goto fail;
> +
> +       div_hw = &div->hw;
> +       div->reg = reg;
> +       div->shift = PCG_PREDIV_SHIFT;
> +       div->width = PCG_PREDIV_WIDTH;
> +       div->lock = &imx_ccm_lock;
> +       div->flags = CLK_DIVIDER_ROUND_CLOSEST;
> +
> +       gate = kzalloc(sizeof(*gate), GFP_KERNEL);
> +       if (!gate)
> +               goto fail;
> +
> +       gate_hw = &gate->hw;
> +       gate->reg = reg;
> +       gate->bit_idx = PCG_CGC_SHIFT;
> +
> +       clk = clk_register_composite(NULL, name, parent_names, num_parents,
> +                                       mux_hw, &clk_mux_ops, div_hw,
> +                                       &imx_clk_composite_divider_ops, gate_hw,
> +                                       &clk_gate_ops, flags);

Didn't I already review this? I'd prefer we move this to using clk_hw
based APIs and then return the clk pointer if needed.

> +       if (IS_ERR(clk))
> +               goto fail;
> +
> +       return clk;
> +
> +fail:
> +       kfree(gate);
> +       kfree(div);
> +       kfree(mux);
> +       return clk;
> +}

Re: [PATCH v9 4/5] clk: imx: add imx composite clock

[Abel Vesa]

On Wed, Oct 17, 2018 at 12:51:35PM -0700, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-09-24 03:39:56)
> > +       clk = clk_register_composite(NULL, name, parent_names, num_parents,
> > +                                       mux_hw, &clk_mux_ops, div_hw,
> > +                                       &imx_clk_composite_divider_ops, gate_hw,
> > +                                       &clk_gate_ops, flags);
> 
> Didn't I already review this? I'd prefer we move this to using clk_hw
> based APIs and then return the clk pointer if needed.
> 

Yes, you reviewed the v11, so you can ignore this 9th version.

I'll implement all the comments from you in the 12th version before sending.

I'll also switch all clk based register functions call sites
to clk_hw based ones.

Thanks

> > +       if (IS_ERR(clk))
> > +               goto fail;
> > +
> > +       return clk;
> > +
> > +fail:
> > +       kfree(gate);
> > +       kfree(div);
> > +       kfree(mux);
> > +       return clk;
> > +}

-- 

[PATCH v9 5/5] clk: imx: add clock driver for i.MX8MQ CCM

[Abel Vesa]

From: Lucas Stach <l.stach@pengutronix.de>

Add driver for the Clock Control Module found on i.MX8MQ.

This is largely based on the downstream driver from Anson Huang and
Bai Ping at NXP, plus the imx composite clock from Abel Vesa at NXP,
with only some small adaptions to mainline from me.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---
 drivers/clk/imx/Makefile     |   1 +
 drivers/clk/imx/clk-imx8mq.c | 602 +++++++++++++++++++++++++++++++++++++++++++
 drivers/clk/imx/clk.h        |  36 +++
 3 files changed, 639 insertions(+)
 create mode 100644 drivers/clk/imx/clk-imx8mq.c

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index 4fabb0a..64e695c 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -30,3 +30,4 @@ obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o
 obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o
 obj-$(CONFIG_SOC_IMX7D)  += clk-imx7d.o
 obj-$(CONFIG_SOC_VF610)  += clk-vf610.o
+obj-$(CONFIG_SOC_IMX8MQ) += clk-imx8mq.o
diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
new file mode 100644
index 0000000..aadb523
--- /dev/null
+++ b/drivers/clk/imx/clk-imx8mq.c
@@ -0,0 +1,602 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 NXP.
+ * Copyright (C) 2017 Pengutronix, Lucas Stach <kernel@pengutronix.de>
+ */
+
+#include <dt-bindings/clock/imx8mq-clock.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/types.h>
+
+#include "clk.h"
+
+static u32 share_count_sai1;
+static u32 share_count_sai2;
+static u32 share_count_sai3;
+static u32 share_count_sai4;
+static u32 share_count_sai5;
+static u32 share_count_sai6;
+static u32 share_count_dcss;
+static u32 share_count_nand;
+
+static struct clk *clks[IMX8MQ_CLK_END];
+
+static const char *pll_ref_sels[] = { "osc_25m", "osc_27m", "dummy", "dummy", };
+static const char *arm_pll_bypass_sels[] = {"arm_pll", "arm_pll_ref_sel", };
+static const char *gpu_pll_bypass_sels[] = {"gpu_pll", "gpu_pll_ref_sel", };
+static const char *vpu_pll_bypass_sels[] = {"vpu_pll", "vpu_pll_ref_sel", };
+static const char *audio_pll1_bypass_sels[] = {"audio_pll1", "audio_pll1_ref_sel", };
+static const char *audio_pll2_bypass_sels[] = {"audio_pll2", "audio_pll2_ref_sel", };
+static const char *video_pll1_bypass_sels[] = {"video_pll1", "video_pll1_ref_sel", };
+
+static const char *sys1_pll1_out_sels[] = {"sys1_pll1", "sys1_pll1_ref_sel", };
+static const char *sys2_pll1_out_sels[] = {"sys2_pll1", "sys1_pll1_ref_sel", };
+static const char *sys3_pll1_out_sels[] = {"sys3_pll1", "sys3_pll1_ref_sel", };
+static const char *dram_pll1_out_sels[] = {"dram_pll1", "dram_pll1_ref_sel", };
+
+static const char *sys1_pll2_out_sels[] = {"sys1_pll2_div", "sys1_pll1_ref_sel", };
+static const char *sys2_pll2_out_sels[] = {"sys2_pll2_div", "sys2_pll1_ref_sel", };
+static const char *sys3_pll2_out_sels[] = {"sys3_pll2_div", "sys2_pll1_ref_sel", };
+static const char *dram_pll2_out_sels[] = {"dram_pll2_div", "dram_pll1_ref_sel", };
+
+/* CCM ROOT */
+static const char *imx8mq_a53_sels[] = {"osc_25m", "arm_pll_out", "sys2_pll_500m", "sys2_pll_1000m",
+					"sys1_pll_800m", "sys1_pll_400m", "audio_pll1_out", "sys3_pll2_out", };
+
+static const char *imx8mq_vpu_sels[] = {"osc_25m", "arm_pll_out", "sys2_pll_500m", "sys2_pll_1000m",
+					"sys1_pll_800m", "sys1_pll_400m", "audio_pll1_out", "vpu_pll_out", };
+
+static const char *imx8mq_gpu_core_sels[] = {"osc_25m", "gpu_pll_out", "sys1_pll_800m", "sys3_pll2_out",
+					     "sys2_pll_1000m", "audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_gpu_shader_sels[] = {"osc_25m", "gpu_pll_out", "sys1_pll_800m", "sys3_pll2_out",
+					       "sys2_pll_1000m", "audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_main_axi_sels[] = {"osc_25m", "sys2_pll_333m", "sys1_pll_800m", "sys2_pll_250m",
+					     "sys2_pll_1000m", "audio_pll1_out", "video_pll1_out", "sys1_pll_100m",};
+
+static const char *imx8mq_enet_axi_sels[] = {"osc_25m", "sys1_pll_266m", "sys1_pll_800m", "sys2_pll_250m",
+					     "sys2_pll_200m", "audio_pll1_out", "video_pll1_out", "sys3_pll2_out", };
+
+static const char *imx8mq_nand_usdhc_sels[] = {"osc_25m", "sys1_pll_266m", "sys1_pll_800m", "sys2_pll_200m",
+					       "sys1_pll_133m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll1_out", };
+
+static const char *imx8mq_vpu_bus_sels[] = {"osc_25m", "sys1_pll_800m", "vpu_pll_out", "audio_pll2_out", "sys3_pll2_out", "sys2_pll_1000m", "sys2_pll_200m", "sys1_pll_100m", };
+
+static const char *imx8mq_disp_axi_sels[] = {"osc_25m", "sys2_pll_125m", "sys1_pll_800m", "sys3_pll2_out", "sys1_pll_400m", "audio_pll2_out", "clk_ext1", "clk_ext4", };
+
+static const char *imx8mq_disp_apb_sels[] = {"osc_25m", "sys2_pll_125m", "sys1_pll_800m", "sys3_pll2_out",
+					     "sys1_pll_40m", "audio_pll2_out", "clk_ext1", "clk_ext3", };
+
+static const char *imx8mq_disp_rtrm_sels[] = {"osc_25m", "sys1_pll_800m", "sys2_pll_200m", "sys1_pll_400m",
+					      "audio_pll1_out", "video_pll1_out", "clk_ext2", "clk_ext3", };
+
+static const char *imx8mq_usb_bus_sels[] = {"osc_25m", "sys2_pll_500m", "sys1_pll_800m", "sys2_pll_100m",
+					    "sys2_pll_200m", "clk_ext2", "clk_ext4", "audio_pll2_out", };
+
+static const char *imx8mq_gpu_axi_sels[] = {"osc_25m", "sys1_pll_800m", "gpu_pll_out", "sys3_pll2_out", "sys2_pll_1000m",
+					    "audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_gpu_ahb_sels[] = {"osc_25m", "sys1_pll_800m", "gpu_pll_out", "sys3_pll2_out", "sys2_pll_1000m",
+					    "audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_noc_sels[] = {"osc_25m", "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_1000m", "sys2_pll_500m",
+					"audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_noc_apb_sels[] = {"osc_25m", "sys1_pll_400m", "sys3_pll2_out", "sys2_pll_333m", "sys2_pll_200m",
+					    "sys1_pll_800m", "audio_pll1_out", "video_pll1_out", };
+
+static const char *imx8mq_ahb_sels[] = {"osc_25m", "sys1_pll_133m", "sys1_pll_800m", "sys1_pll_400m",
+					"sys2_pll_125m", "sys3_pll2_out", "audio_pll1_out", "video_pll1_out", };
+
+static const char *imx8mq_audio_ahb_sels[] = {"osc_25m", "sys2_pll_500m", "sys1_pll_800m", "sys2_pll_1000m",
+						  "sys2_pll_166m", "sys3_pll2_out", "audio_pll1_out", "video_pll1_out", };
+
+static const char *imx8mq_dsi_ahb_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_800m",
+						"sys2_pll_1000m", "sys3_pll2_out", "clk_ext3", "audio_pll2_out"};
+
+static const char *imx8mq_dram_alt_sels[] = {"osc_25m", "sys1_pll_800m", "sys1_pll_100m", "sys2_pll_500m",
+						"sys2_pll_250m", "sys1_pll_400m", "audio_pll1_out", "sys1_pll_266m", };
+
+static const char *imx8mq_dram_apb_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
+						"sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
+
+static const char *imx8mq_vpu_g1_sels[] = {"osc_25m", "vpu_pll_out", "sys1_pll_800m", "sys2_pll_1000m", "sys1_pll_100m", "sys2_pll_125m", "sys3_pll2_out", "audio_pll1_out", };
+
+static const char *imx8mq_vpu_g2_sels[] = {"osc_25m", "vpu_pll_out", "sys1_pll_800m", "sys2_pll_1000m", "sys1_pll_100m", "sys2_pll_125m", "sys3_pll2_out", "audio_pll1_out", };
+
+static const char *imx8mq_disp_dtrc_sels[] = {"osc_25m", "vpu_pll_out", "sys1_pll_800m", "sys2_pll_1000m", "sys1_pll_160m", "sys2_pll_100m", "sys3_pll2_out", "audio_pll2_out", };
+
+static const char *imx8mq_disp_dc8000_sels[] = {"osc_25m", "vpu_pll_out", "sys1_pll_800m", "sys2_pll_1000m", "sys1_pll_160m", "sys2_pll_100m", "sys3_pll2_out", "audio_pll2_out", };
+
+static const char *imx8mq_pcie1_ctrl_sels[] = {"osc_25m", "sys2_pll_250m", "sys2_pll_200m", "sys1_pll_266m",
+					       "sys1_pll_800m", "sys2_pll_500m", "sys2_pll_250m", "sys3_pll2_out", };
+
+static const char *imx8mq_pcie1_phy_sels[] = {"osc_25m", "sys2_pll_100m", "sys2_pll_500m", "clk_ext1", "clk_ext2",
+					      "clk_ext3", "clk_ext4", };
+
+static const char *imx8mq_pcie1_aux_sels[] = {"osc_25m", "sys2_pll_200m", "sys2_pll_500m", "sys3_pll2_out",
+					      "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_160m", "sys1_pll_200m", };
+
+static const char *imx8mq_dc_pixel_sels[] = {"osc_25m", "video_pll1_out", "audio_pll2_out", "audio_pll1_out", "sys1_pll_800m", "sys2_pll_1000m", "sys3_pll2_out", "clk_ext4", };
+
+static const char *imx8mq_lcdif_pixel_sels[] = {"osc_25m", "video_pll1_out", "audio_pll2_out", "audio_pll1_out", "sys1_pll_800m", "sys2_pll_1000m", "sys3_pll2_out", "clk_ext4", };
+
+static const char *imx8mq_sai1_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext1", "clk_ext2", };
+
+static const char *imx8mq_sai2_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext2", "clk_ext3", };
+
+static const char *imx8mq_sai3_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext3", "clk_ext4", };
+
+static const char *imx8mq_sai4_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext1", "clk_ext2", };
+
+static const char *imx8mq_sai5_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext2", "clk_ext3", };
+
+static const char *imx8mq_sai6_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext3", "clk_ext4", };
+
+static const char *imx8mq_spdif1_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext2", "clk_ext3", };
+
+static const char *imx8mq_spdif2_sels[] = {"osc_25m", "audio_pll1_out", "audio_pll2_out", "video_pll1_out", "sys1_pll_133m", "osc_27m", "clk_ext3", "clk_ext4", };
+
+static const char *imx8mq_enet_ref_sels[] = {"osc_25m", "sys2_pll_125m", "sys2_pll_500m", "sys2_pll_100m",
+					     "sys1_pll_160m", "audio_pll1_out", "video_pll1_out", "clk_ext4", };
+
+static const char *imx8mq_enet_timer_sels[] = {"osc_25m", "sys2_pll_100m", "audio_pll1_out", "clk_ext1", "clk_ext2",
+					       "clk_ext3", "clk_ext4", "video_pll1_out", };
+
+static const char *imx8mq_enet_phy_sels[] = {"osc_25m", "sys2_pll_50m", "sys2_pll_125m", "sys2_pll_500m",
+					     "audio_pll1_out", "video_pll1_out", "audio_pll2_out", };
+
+static const char *imx8mq_nand_sels[] = {"osc_25m", "sys2_pll_500m", "audio_pll1_out", "sys1_pll_400m",
+					 "audio_pll2_out", "sys3_pll2_out", "sys2_pll_250m", "video_pll1_out", };
+
+static const char *imx8mq_qspi_sels[] = {"osc_25m", "sys1_pll_400m", "sys1_pll_800m", "sys2_pll_500m",
+					 "audio_pll2_out", "sys1_pll_266m", "sys3_pll2_out", "sys1_pll_100m", };
+
+static const char *imx8mq_usdhc1_sels[] = {"osc_25m", "sys1_pll_400m", "sys1_pll_800m", "sys2_pll_500m",
+					 "audio_pll2_out", "sys1_pll_266m", "sys3_pll2_out", "sys1_pll_100m", };
+
+static const char *imx8mq_usdhc2_sels[] = {"osc_25m", "sys1_pll_400m", "sys1_pll_800m", "sys2_pll_500m",
+					 "audio_pll2_out", "sys1_pll_266m", "sys3_pll2_out", "sys1_pll_100m", };
+
+static const char *imx8mq_i2c1_sels[] = {"osc_25m", "sys1_pll_160m", "sys2_pll_50m", "sys3_pll2_out", "audio_pll1_out",
+					 "video_pll1_out", "audio_pll2_out", "sys1_pll_133m", };
+
+static const char *imx8mq_i2c2_sels[] = {"osc_25m", "sys1_pll_160m", "sys2_pll_50m", "sys3_pll2_out", "audio_pll1_out",
+					 "video_pll1_out", "audio_pll2_out", "sys1_pll_133m", };
+
+static const char *imx8mq_i2c3_sels[] = {"osc_25m", "sys1_pll_160m", "sys2_pll_50m", "sys3_pll2_out", "audio_pll1_out",
+					 "video_pll1_out", "audio_pll2_out", "sys1_pll_133m", };
+
+static const char *imx8mq_i2c4_sels[] = {"osc_25m", "sys1_pll_160m", "sys2_pll_50m", "sys3_pll2_out", "audio_pll1_out",
+					 "video_pll1_out", "audio_pll2_out", "sys1_pll_133m", };
+
+static const char *imx8mq_uart1_sels[] = {"osc_25m", "sys1_pll_80m", "sys2_pll_200m", "sys2_pll_100m",
+					  "sys3_pll2_out", "clk_ext2", "clk_ext4", "audio_pll2_out", };
+
+static const char *imx8mq_uart2_sels[] = {"osc_25m", "sys1_pll_80m", "sys2_pll_200m", "sys2_pll_100m",
+					  "sys3_pll2_out", "clk_ext2", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_uart3_sels[] = {"osc_25m", "sys1_pll_80m", "sys2_pll_200m", "sys2_pll_100m",
+					  "sys3_pll2_out", "clk_ext2", "clk_ext4", "audio_pll2_out", };
+
+static const char *imx8mq_uart4_sels[] = {"osc_25m", "sys1_pll_80m", "sys2_pll_200m", "sys2_pll_100m",
+					  "sys3_pll2_out", "clk_ext2", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_usb_core_sels[] = {"osc_25m", "sys1_pll_100m", "sys1_pll_40m", "sys2_pll_100m",
+					     "sys2_pll_200m", "clk_ext2", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_usb_phy_sels[] = {"osc_25m", "sys1_pll_100m", "sys1_pll_40m", "sys2_pll_100m",
+					     "sys2_pll_200m", "clk_ext2", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_ecspi1_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
+					   "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
+
+static const char *imx8mq_ecspi2_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
+					   "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
+
+static const char *imx8mq_pwm1_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_160m", "sys1_pll_40m",
+					 "sys3_pll2_out", "clk_ext1", "sys1_pll_80m", "video_pll1_out", };
+
+static const char *imx8mq_pwm2_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_160m", "sys1_pll_40m",
+					 "sys3_pll2_out", "clk_ext1", "sys1_pll_80m", "video_pll1_out", };
+
+static const char *imx8mq_pwm3_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_160m", "sys1_pll_40m",
+					 "sys3_pll2_out", "clk_ext2", "sys1_pll_80m", "video_pll1_out", };
+
+static const char *imx8mq_pwm4_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_160m", "sys1_pll_40m",
+					 "sys3_pll2_out", "clk_ext2", "sys1_pll_80m", "video_pll1_out", };
+
+static const char *imx8mq_gpt1_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_400m", "sys1_pll_40m",
+					 "sys1_pll_80m", "audio_pll1_out", "clk_ext1", };
+
+static const char *imx8mq_wdog_sels[] = {"osc_25m", "sys1_pll_133m", "sys1_pll_160m", "vpu_pll_out",
+					 "sys2_pll_125m", "sys3_pll2_out", "sys1_pll_80m", "sys2_pll_166m", };
+
+static const char *imx8mq_wrclk_sels[] = {"osc_25m", "sys1_pll_40m", "vpu_pll_out", "sys3_pll2_out", "sys2_pll_200m",
+					  "sys1_pll_266m", "sys2_pll_500m", "sys1_pll_100m", };
+
+static const char *imx8mq_dsi_core_sels[] = {"osc_25m", "sys1_pll_266m", "sys2_pll_250m", "sys1_pll_800m",
+					     "sys2_pll_1000m", "sys3_pll2_out", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_dsi_phy_sels[] = {"osc_25m", "sys2_pll_125m", "sys2_pll_100m", "sys1_pll_800m",
+					    "sys2_pll_1000m", "clk_ext2", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_dsi_dbi_sels[] = {"osc_25m", "sys1_pll_266m", "sys2_pll_100m", "sys1_pll_800m",
+					    "sys2_pll_1000m", "sys3_pll2_out", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_dsi_esc_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_800m",
+					    "sys2_pll_1000m", "sys3_pll2_out", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_csi1_core_sels[] = {"osc_25m", "sys1_pll_266m", "sys2_pll_250m", "sys1_pll_800m",
+					      "sys2_pll_1000m", "sys3_pll2_out", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_csi1_phy_sels[] = {"osc_25m", "sys2_pll_125m", "sys2_pll_100m", "sys1_pll_800m",
+					     "sys2_pll_1000m", "clk_ext2", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_csi1_esc_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_800m",
+					     "sys2_pll_1000m", "sys3_pll2_out", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_csi2_core_sels[] = {"osc_25m", "sys1_pll_266m", "sys2_pll_250m", "sys1_pll_800m",
+					      "sys2_pll_1000m", "sys3_pll2_out", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_csi2_phy_sels[] = {"osc_25m", "sys2_pll_125m", "sys2_pll_100m", "sys1_pll_800m",
+					     "sys2_pll_1000m", "clk_ext2", "audio_pll2_out", "video_pll1_out", };
+
+static const char *imx8mq_csi2_esc_sels[] = {"osc_25m", "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_800m",
+					     "sys2_pll_1000m", "sys3_pll2_out", "clk_ext3", "audio_pll2_out", };
+
+static const char *imx8mq_pcie2_ctrl_sels[] = {"osc_25m", "sys2_pll_250m", "sys2_pll_200m", "sys1_pll_266m",
+					       "sys1_pll_800m", "sys2_pll_500m", "sys2_pll_333m", "sys3_pll2_out", };
+
+static const char *imx8mq_pcie2_phy_sels[] = {"osc_25m", "sys2_pll_100m", "sys2_pll_500m", "clk_ext1",
+					      "clk_ext2", "clk_ext3", "clk_ext4", "sys1_pll_400m", };
+
+static const char *imx8mq_pcie2_aux_sels[] = {"osc_25m", "sys2_pll_200m", "sys2_pll_50m", "sys3_pll2_out",
+					      "sys2_pll_100m", "sys1_pll_80m", "sys1_pll_160m", "sys1_pll_200m", };
+
+static const char *imx8mq_ecspi3_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
+					   "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
+static const char *imx8mq_dram_core_sels[] = {"dram_pll_out", "dram_alt_root", };
+
+static const char *imx8mq_clko2_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_400m", "sys2_pll_166m", "audio_pll1_out",
+					 "video_pll1_out", "ckil", };
+
+static struct clk_onecell_data clk_data;
+
+static void __init imx8mq_clocks_init(struct device_node *ccm_node)
+{
+	struct device_node *np;
+	void __iomem *base;
+	int i;
+
+	clks[IMX8MQ_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
+	clks[IMX8MQ_CLK_32K] = of_clk_get_by_name(ccm_node, "ckil");
+	clks[IMX8MQ_CLK_25M] = of_clk_get_by_name(ccm_node, "osc_25m");
+	clks[IMX8MQ_CLK_27M] = of_clk_get_by_name(ccm_node, "osc_27m");
+	clks[IMX8MQ_CLK_EXT1] = of_clk_get_by_name(ccm_node, "clk_ext1");
+	clks[IMX8MQ_CLK_EXT2] = of_clk_get_by_name(ccm_node, "clk_ext2");
+	clks[IMX8MQ_CLK_EXT3] = of_clk_get_by_name(ccm_node, "clk_ext3");
+	clks[IMX8MQ_CLK_EXT4] = of_clk_get_by_name(ccm_node, "clk_ext4");
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-anatop");
+	base = of_iomap(np, 0);
+	WARN_ON(!base);
+
+	clks[IMX8MQ_ARM_PLL_REF_SEL] = imx_clk_mux("arm_pll_ref_sel", base + 0x28, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_GPU_PLL_REF_SEL] = imx_clk_mux("gpu_pll_ref_sel", base + 0x18, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_VPU_PLL_REF_SEL] = imx_clk_mux("vpu_pll_ref_sel", base + 0x20, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_AUDIO_PLL1_REF_SEL] = imx_clk_mux("audio_pll1_ref_sel", base + 0x0, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_AUDIO_PLL2_REF_SEL] = imx_clk_mux("audio_pll2_ref_sel", base + 0x8, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_VIDEO_PLL1_REF_SEL] = imx_clk_mux("video_pll1_ref_sel", base + 0x10, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_SYS1_PLL1_REF_SEL]	= imx_clk_mux("sys1_pll1_ref_sel", base + 0x30, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_SYS2_PLL1_REF_SEL]	= imx_clk_mux("sys2_pll1_ref_sel", base + 0x3c, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_SYS3_PLL1_REF_SEL]	= imx_clk_mux("sys3_pll1_ref_sel", base + 0x48, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	clks[IMX8MQ_DRAM_PLL1_REF_SEL]	= imx_clk_mux("dram_pll1_ref_sel", base + 0x60, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+
+	clks[IMX8MQ_ARM_PLL_REF_DIV]	= imx_clk_divider("arm_pll_ref_div", "arm_pll_ref_sel", base + 0x28, 5, 6);
+	clks[IMX8MQ_GPU_PLL_REF_DIV]	= imx_clk_divider("gpu_pll_ref_div", "gpu_pll_ref_sel", base + 0x18, 5, 6);
+	clks[IMX8MQ_VPU_PLL_REF_DIV]	= imx_clk_divider("vpu_pll_ref_div", "vpu_pll_ref_sel", base + 0x20, 5, 6);
+	clks[IMX8MQ_AUDIO_PLL1_REF_DIV] = imx_clk_divider("audio_pll1_ref_div", "audio_pll1_ref_sel", base + 0x0, 5, 6);
+	clks[IMX8MQ_AUDIO_PLL2_REF_DIV] = imx_clk_divider("audio_pll2_ref_div", "audio_pll2_ref_sel", base + 0x8, 5, 6);
+	clks[IMX8MQ_VIDEO_PLL1_REF_DIV] = imx_clk_divider("video_pll1_ref_div", "video_pll1_ref_sel", base + 0x10, 5, 6);
+	clks[IMX8MQ_SYS1_PLL1_REF_DIV]	= imx_clk_divider("sys1_pll1_ref_div", "sys1_pll1_ref_sel", base + 0x38, 25, 3);
+	clks[IMX8MQ_SYS2_PLL1_REF_DIV]	= imx_clk_divider("sys2_pll1_ref_div", "sys2_pll1_ref_sel", base + 0x44, 25, 3);
+	clks[IMX8MQ_SYS3_PLL1_REF_DIV]	= imx_clk_divider("sys3_pll1_ref_div", "sys3_pll1_ref_sel", base + 0x50, 25, 3);
+	clks[IMX8MQ_DRAM_PLL1_REF_DIV]	= imx_clk_divider("dram_pll1_ref_div", "dram_pll1_ref_sel", base + 0x68, 25, 3);
+
+	clks[IMX8MQ_ARM_PLL] = imx_clk_frac_pll("arm_pll", "arm_pll_ref_div", base + 0x28);
+	clks[IMX8MQ_GPU_PLL] = imx_clk_frac_pll("gpu_pll", "gpu_pll_ref_div", base + 0x18);
+	clks[IMX8MQ_VPU_PLL] = imx_clk_frac_pll("vpu_pll", "vpu_pll_ref_div", base + 0x20);
+	clks[IMX8MQ_AUDIO_PLL1] = imx_clk_frac_pll("audio_pll1", "audio_pll1_ref_div", base + 0x0);
+	clks[IMX8MQ_AUDIO_PLL2] = imx_clk_frac_pll("audio_pll2", "audio_pll2_ref_div", base + 0x8);
+	clks[IMX8MQ_VIDEO_PLL1] = imx_clk_frac_pll("video_pll1", "video_pll1_ref_div", base + 0x10);
+	clks[IMX8MQ_SYS1_PLL1] = imx_clk_sccg_pll("sys1_pll1", "sys1_pll1_ref_div", base + 0x30, SCCG_PLL1);
+	clks[IMX8MQ_SYS2_PLL1] = imx_clk_sccg_pll("sys2_pll1", "sys2_pll1_ref_div", base + 0x3c, SCCG_PLL1);
+	clks[IMX8MQ_SYS3_PLL1] = imx_clk_sccg_pll("sys3_pll1", "sys3_pll1_ref_div", base + 0x48, SCCG_PLL1);
+	clks[IMX8MQ_DRAM_PLL1] = imx_clk_sccg_pll("dram_pll1", "dram_pll1_ref_div", base + 0x60, SCCG_PLL1);
+
+	clks[IMX8MQ_SYS1_PLL2] = imx_clk_sccg_pll("sys1_pll2", "sys1_pll1_out_div", base + 0x30, SCCG_PLL2);
+	clks[IMX8MQ_SYS2_PLL2] = imx_clk_sccg_pll("sys2_pll2", "sys2_pll1_out_div", base + 0x3c, SCCG_PLL2);
+	clks[IMX8MQ_SYS3_PLL2] = imx_clk_sccg_pll("sys3_pll2", "sys3_pll1_out_div", base + 0x48, SCCG_PLL2);
+	clks[IMX8MQ_DRAM_PLL2] = imx_clk_sccg_pll("dram_pll2", "dram_pll1_out_div", base + 0x60, SCCG_PLL2);
+
+	/* PLL divs */
+	clks[IMX8MQ_SYS1_PLL1_OUT_DIV] = imx_clk_divider("sys1_pll1_out_div", "sys1_pll1_out", base + 0x38, 19, 6);
+	clks[IMX8MQ_SYS2_PLL1_OUT_DIV] = imx_clk_divider("sys2_pll1_out_div", "sys2_pll1_out", base + 0x44, 19, 6);
+	clks[IMX8MQ_SYS3_PLL1_OUT_DIV] = imx_clk_divider("sys3_pll1_out_div", "sys3_pll1_out", base + 0x50, 19, 6);
+	clks[IMX8MQ_DRAM_PLL1_OUT_DIV] = imx_clk_divider("dram_pll1_out_div", "dram_pll1_out", base + 0x68, 19, 6);
+	clks[IMX8MQ_SYS1_PLL2_DIV] = imx_clk_divider("sys1_pll2_div", "sys1_pll2", base + 0x38, 1, 6);
+	clks[IMX8MQ_SYS2_PLL2_DIV] = imx_clk_divider("sys2_pll2_div", "sys2_pll2", base + 0x44, 1, 6);
+	clks[IMX8MQ_SYS3_PLL2_DIV] = imx_clk_divider("sys3_pll2_div", "sys3_pll2", base + 0x50, 1, 6);
+	clks[IMX8MQ_DRAM_PLL2_DIV] = imx_clk_divider("dram_pll2_div", "dram_pll2", base + 0x68, 1, 6);
+
+	/* PLL bypass out */
+	clks[IMX8MQ_ARM_PLL_BYPASS] = imx_clk_mux("arm_pll_bypass", base + 0x28, 14, 1, arm_pll_bypass_sels, ARRAY_SIZE(arm_pll_bypass_sels));
+	clks[IMX8MQ_GPU_PLL_BYPASS] = imx_clk_mux("gpu_pll_bypass", base + 0x18, 14, 1, gpu_pll_bypass_sels, ARRAY_SIZE(gpu_pll_bypass_sels));
+	clks[IMX8MQ_VPU_PLL_BYPASS] = imx_clk_mux("vpu_pll_bypass", base + 0x20, 14, 1, vpu_pll_bypass_sels, ARRAY_SIZE(vpu_pll_bypass_sels));
+	clks[IMX8MQ_AUDIO_PLL1_BYPASS] = imx_clk_mux("audio_pll1_bypass", base + 0x0, 14, 1, audio_pll1_bypass_sels, ARRAY_SIZE(audio_pll1_bypass_sels));
+	clks[IMX8MQ_AUDIO_PLL2_BYPASS] = imx_clk_mux("audio_pll2_bypass", base + 0x8, 14, 1, audio_pll2_bypass_sels, ARRAY_SIZE(audio_pll2_bypass_sels));
+	clks[IMX8MQ_VIDEO_PLL1_BYPASS] = imx_clk_mux("video_pll1_bypass", base + 0x10, 14, 1, video_pll1_bypass_sels, ARRAY_SIZE(video_pll1_bypass_sels));
+
+	clks[IMX8MQ_SYS1_PLL1_OUT] = imx_clk_mux("sys1_pll1_out", base + 0x30, 5, 1, sys1_pll1_out_sels, ARRAY_SIZE(sys1_pll1_out_sels));
+	clks[IMX8MQ_SYS2_PLL1_OUT] = imx_clk_mux("sys2_pll1_out", base + 0x3c, 5, 1, sys2_pll1_out_sels, ARRAY_SIZE(sys2_pll1_out_sels));
+	clks[IMX8MQ_SYS3_PLL1_OUT] = imx_clk_mux("sys3_pll1_out", base + 0x48, 5, 1, sys3_pll1_out_sels, ARRAY_SIZE(sys3_pll1_out_sels));
+	clks[IMX8MQ_DRAM_PLL1_OUT] = imx_clk_mux("dram_pll1_out", base + 0x60, 5, 1, dram_pll1_out_sels, ARRAY_SIZE(dram_pll1_out_sels));
+	clks[IMX8MQ_SYS1_PLL2_OUT] = imx_clk_mux("sys1_pll2_out", base + 0x30, 4, 1, sys1_pll2_out_sels, ARRAY_SIZE(sys1_pll2_out_sels));
+	clks[IMX8MQ_SYS2_PLL2_OUT] = imx_clk_mux("sys2_pll2_out", base + 0x3c, 4, 1, sys2_pll2_out_sels, ARRAY_SIZE(sys2_pll2_out_sels));
+	clks[IMX8MQ_SYS3_PLL2_OUT] = imx_clk_mux("sys3_pll2_out", base + 0x48, 4, 1, sys3_pll2_out_sels, ARRAY_SIZE(sys3_pll2_out_sels));
+	clks[IMX8MQ_DRAM_PLL2_OUT] = imx_clk_mux("dram_pll2_out", base + 0x60, 4, 1, dram_pll2_out_sels, ARRAY_SIZE(dram_pll2_out_sels));
+
+	/* unbypass all the plls */
+	clk_set_parent(clks[IMX8MQ_GPU_PLL_BYPASS], clks[IMX8MQ_GPU_PLL]);
+	clk_set_parent(clks[IMX8MQ_VPU_PLL_BYPASS], clks[IMX8MQ_VPU_PLL]);
+	clk_set_parent(clks[IMX8MQ_AUDIO_PLL1_BYPASS], clks[IMX8MQ_AUDIO_PLL1]);
+	clk_set_parent(clks[IMX8MQ_AUDIO_PLL2_BYPASS], clks[IMX8MQ_AUDIO_PLL2]);
+	clk_set_parent(clks[IMX8MQ_VIDEO_PLL1_BYPASS], clks[IMX8MQ_VIDEO_PLL1]);
+	clk_set_parent(clks[IMX8MQ_SYS3_PLL1_OUT], clks[IMX8MQ_SYS3_PLL1]);
+	clk_set_parent(clks[IMX8MQ_SYS3_PLL2_OUT], clks[IMX8MQ_SYS3_PLL2_DIV]);
+
+	/* PLL OUT GATE */
+	clks[IMX8MQ_ARM_PLL_OUT] = imx_clk_gate("arm_pll_out", "arm_pll_bypass", base + 0x28, 21);
+	clks[IMX8MQ_GPU_PLL_OUT] = imx_clk_gate("gpu_pll_out", "gpu_pll_bypass", base + 0x18, 21);
+	clks[IMX8MQ_VPU_PLL_OUT] = imx_clk_gate("vpu_pll_out", "vpu_pll_bypass", base + 0x20, 21);
+	clks[IMX8MQ_AUDIO_PLL1_OUT] = imx_clk_gate("audio_pll1_out", "audio_pll1_bypass", base + 0x0, 21);
+	clks[IMX8MQ_AUDIO_PLL2_OUT] = imx_clk_gate("audio_pll2_out", "audio_pll2_bypass", base + 0x8, 21);
+	clks[IMX8MQ_VIDEO_PLL1_OUT] = imx_clk_gate("video_pll1_out", "video_pll1_bypass", base + 0x10, 21);
+	clks[IMX8MQ_SYS1_PLL_OUT] = imx_clk_gate("sys1_pll_out", "sys1_pll2_out", base + 0x30, 9);
+	clks[IMX8MQ_SYS2_PLL_OUT] = imx_clk_gate("sys2_pll_out", "sys2_pll2_out", base + 0x3c, 9);
+	clks[IMX8MQ_SYS3_PLL_OUT] = imx_clk_gate("sys3_pll_out", "sys3_pll2_out", base + 0x48, 9);
+	clks[IMX8MQ_DRAM_PLL_OUT] = imx_clk_gate("dram_pll_out", "dram_pll2_out", base + 0x60, 9);
+
+	/* SYS PLL fixed output */
+	clks[IMX8MQ_SYS1_PLL_40M] = imx_clk_fixed_factor("sys1_pll_40m", "sys1_pll_out", 1, 20);
+	clks[IMX8MQ_SYS1_PLL_80M] = imx_clk_fixed_factor("sys1_pll_80m", "sys1_pll_out", 1, 10);
+	clks[IMX8MQ_SYS1_PLL_100M] = imx_clk_fixed_factor("sys1_pll_100m", "sys1_pll_out", 1, 8);
+	clks[IMX8MQ_SYS1_PLL_133M] = imx_clk_fixed_factor("sys1_pll_133m", "sys1_pll_out", 1, 6);
+	clks[IMX8MQ_SYS1_PLL_160M] = imx_clk_fixed_factor("sys1_pll_160m", "sys1_pll_out", 1, 5);
+	clks[IMX8MQ_SYS1_PLL_200M] = imx_clk_fixed_factor("sys1_pll_200m", "sys1_pll_out", 1, 4);
+	clks[IMX8MQ_SYS1_PLL_266M] = imx_clk_fixed_factor("sys1_pll_266m", "sys1_pll_out", 1, 3);
+	clks[IMX8MQ_SYS1_PLL_400M] = imx_clk_fixed_factor("sys1_pll_400m", "sys1_pll_out", 1, 2);
+	clks[IMX8MQ_SYS1_PLL_800M] = imx_clk_fixed_factor("sys1_pll_800m", "sys1_pll_out", 1, 1);
+
+	clks[IMX8MQ_SYS2_PLL_50M] = imx_clk_fixed_factor("sys2_pll_50m", "sys2_pll_out", 1, 20);
+	clks[IMX8MQ_SYS2_PLL_100M] = imx_clk_fixed_factor("sys2_pll_100m", "sys2_pll_out", 1, 10);
+	clks[IMX8MQ_SYS2_PLL_125M] = imx_clk_fixed_factor("sys2_pll_125m", "sys2_pll_out", 1, 8);
+	clks[IMX8MQ_SYS2_PLL_166M] = imx_clk_fixed_factor("sys2_pll_166m", "sys2_pll_out", 1, 6);
+	clks[IMX8MQ_SYS2_PLL_200M] = imx_clk_fixed_factor("sys2_pll_200m", "sys2_pll_out", 1, 5);
+	clks[IMX8MQ_SYS2_PLL_250M] = imx_clk_fixed_factor("sys2_pll_250m", "sys2_pll_out", 1, 4);
+	clks[IMX8MQ_SYS2_PLL_333M] = imx_clk_fixed_factor("sys2_pll_333m", "sys2_pll_out", 1, 3);
+	clks[IMX8MQ_SYS2_PLL_500M] = imx_clk_fixed_factor("sys2_pll_500m", "sys2_pll_out", 1, 2);
+	clks[IMX8MQ_SYS2_PLL_1000M] = imx_clk_fixed_factor("sys2_pll_1000m", "sys2_pll_out", 1, 1);
+
+	np = ccm_node;
+	base = of_iomap(np, 0);
+	WARN_ON(!base);
+	/* CORE */
+	clks[IMX8MQ_CLK_A53_SRC] = imx_clk_mux2("arm_a53_src", base + 0x8000, 24, 3, imx8mq_a53_sels, ARRAY_SIZE(imx8mq_a53_sels));
+	clks[IMX8MQ_CLK_VPU_SRC] = imx_clk_mux2("vpu_src", base + 0x8100, 24, 3, imx8mq_vpu_sels, ARRAY_SIZE(imx8mq_vpu_sels));
+	clks[IMX8MQ_CLK_GPU_CORE_SRC] = imx_clk_mux2("gpu_core_src", base + 0x8180, 24, 3,  imx8mq_gpu_core_sels, ARRAY_SIZE(imx8mq_gpu_core_sels));
+	clks[IMX8MQ_CLK_GPU_SHADER_SRC] = imx_clk_mux2("gpu_shader_src", base + 0x8200, 24, 3, imx8mq_gpu_shader_sels,  ARRAY_SIZE(imx8mq_gpu_shader_sels));
+	clks[IMX8MQ_CLK_A53_CG] = imx_clk_gate3_flags("arm_a53_cg", "arm_a53_src", base + 0x8000, 28, CLK_IS_CRITICAL);
+	clks[IMX8MQ_CLK_VPU_CG] = imx_clk_gate3("vpu_cg", "vpu_src", base + 0x8100, 28);
+	clks[IMX8MQ_CLK_GPU_CORE_CG] = imx_clk_gate3("gpu_core_cg", "gpu_core_src", base + 0x8180, 28);
+	clks[IMX8MQ_CLK_GPU_SHADER_CG] = imx_clk_gate3("gpu_shader_cg", "gpu_shader_src", base + 0x8200, 28);
+
+	clks[IMX8MQ_CLK_A53_DIV] = imx_clk_divider2("arm_a53_div", "arm_a53_cg", base + 0x8000, 0, 3);
+	clks[IMX8MQ_CLK_VPU_DIV] = imx_clk_divider2("vpu_div", "vpu_cg", base + 0x8100, 0, 3);
+	clks[IMX8MQ_CLK_GPU_CORE_DIV] = imx_clk_divider2("gpu_core_div", "gpu_core_cg", base + 0x8180, 0, 3);
+	clks[IMX8MQ_CLK_GPU_SHADER_DIV] = imx_clk_divider2("gpu_shader_div", "gpu_shader_cg", base + 0x8200, 0, 3);
+
+	/* BUS */
+	clks[IMX8MQ_CLK_MAIN_AXI] = imx_clk_composite_critical("main_axi", imx8mq_main_axi_sels, base + 0x8800);
+	clks[IMX8MQ_CLK_ENET_AXI] = imx_clk_composite("enet_axi", imx8mq_enet_axi_sels, base + 0x8880);
+	clks[IMX8MQ_CLK_NAND_USDHC_BUS] = imx_clk_composite("nand_usdhc_bus", imx8mq_nand_usdhc_sels, base + 0x8900);
+	clks[IMX8MQ_CLK_VPU_BUS] = imx_clk_composite("vpu_bus", imx8mq_vpu_bus_sels, base + 0x8980);
+	clks[IMX8MQ_CLK_DISP_AXI] = imx_clk_composite("disp_axi", imx8mq_disp_axi_sels, base + 0x8a00);
+	clks[IMX8MQ_CLK_DISP_APB] = imx_clk_composite("disp_apb", imx8mq_disp_apb_sels, base + 0x8a80);
+	clks[IMX8MQ_CLK_DISP_RTRM] = imx_clk_composite("disp_rtrm", imx8mq_disp_rtrm_sels, base + 0x8b00);
+	clks[IMX8MQ_CLK_USB_BUS] = imx_clk_composite("usb_bus", imx8mq_usb_bus_sels, base + 0x8b80);
+	clks[IMX8MQ_CLK_GPU_AXI] = imx_clk_composite("gpu_axi", imx8mq_gpu_axi_sels, base + 0x8c00);
+	clks[IMX8MQ_CLK_GPU_AHB] = imx_clk_composite("gpu_ahb", imx8mq_gpu_ahb_sels, base + 0x8c80);
+	clks[IMX8MQ_CLK_NOC] = imx_clk_composite_critical("noc", imx8mq_noc_sels, base + 0x8d00);
+	clks[IMX8MQ_CLK_NOC_APB] = imx_clk_composite_critical("noc_apb", imx8mq_noc_apb_sels, base + 0x8d80);
+
+	/* AHB */
+	clks[IMX8MQ_CLK_AHB] = imx_clk_composite("ahb", imx8mq_ahb_sels, base + 0x9000);
+	clks[IMX8MQ_CLK_AUDIO_AHB] = imx_clk_composite("audio_ahb", imx8mq_audio_ahb_sels, base + 0x9100);
+
+	/* IPG */
+	clks[IMX8MQ_CLK_IPG_ROOT] = imx_clk_divider2("ipg_root", "ahb", base + 0x9080, 0, 1);
+	clks[IMX8MQ_CLK_IPG_AUDIO_ROOT] = imx_clk_divider2("ipg_audio_root", "audio_ahb", base + 0x9180, 0, 1);
+
+	/* IP */
+	clks[IMX8MQ_CLK_DRAM_CORE] = imx_clk_mux2_flags("dram_core_clk", base + 0x9800, 24, 1, imx8mq_dram_core_sels, ARRAY_SIZE(imx8mq_dram_core_sels), CLK_IS_CRITICAL);
+
+	clks[IMX8MQ_CLK_DRAM_ALT] = imx_clk_composite("dram_alt", imx8mq_dram_alt_sels, base + 0xa000);
+	clks[IMX8MQ_CLK_DRAM_APB] = imx_clk_composite_critical("dram_apb", imx8mq_dram_apb_sels, base + 0xa080);
+	clks[IMX8MQ_CLK_VPU_G1] = imx_clk_composite("vpu_g1", imx8mq_vpu_g1_sels, base + 0xa100);
+	clks[IMX8MQ_CLK_VPU_G2] = imx_clk_composite("vpu_g2", imx8mq_vpu_g2_sels, base + 0xa180);
+	clks[IMX8MQ_CLK_DISP_DTRC] = imx_clk_composite("disp_dtrc", imx8mq_disp_dtrc_sels, base + 0xa200);
+	clks[IMX8MQ_CLK_DISP_DC8000] = imx_clk_composite("disp_dc8000", imx8mq_disp_dc8000_sels, base + 0xa280);
+	clks[IMX8MQ_CLK_PCIE1_CTRL] = imx_clk_composite("pcie1_ctrl", imx8mq_pcie1_ctrl_sels, base + 0xa300);
+	clks[IMX8MQ_CLK_PCIE1_PHY] = imx_clk_composite("pcie1_phy", imx8mq_pcie1_phy_sels, base + 0xa380);
+	clks[IMX8MQ_CLK_PCIE1_AUX] = imx_clk_composite("pcie1_aux", imx8mq_pcie1_aux_sels, base + 0xa400);
+	clks[IMX8MQ_CLK_DC_PIXEL] = imx_clk_composite("dc_pixel", imx8mq_dc_pixel_sels, base + 0xa480);
+	clks[IMX8MQ_CLK_LCDIF_PIXEL] = imx_clk_composite("lcdif_pixel", imx8mq_lcdif_pixel_sels, base + 0xa500);
+	clks[IMX8MQ_CLK_SAI1] = imx_clk_composite("sai1", imx8mq_sai1_sels, base + 0xa580);
+	clks[IMX8MQ_CLK_SAI2] = imx_clk_composite("sai2", imx8mq_sai2_sels, base + 0xa600);
+	clks[IMX8MQ_CLK_SAI3] = imx_clk_composite("sai3", imx8mq_sai3_sels, base + 0xa680);
+	clks[IMX8MQ_CLK_SAI4] = imx_clk_composite("sai4", imx8mq_sai4_sels, base + 0xa700);
+	clks[IMX8MQ_CLK_SAI5] = imx_clk_composite("sai5", imx8mq_sai5_sels, base + 0xa780);
+	clks[IMX8MQ_CLK_SAI6] = imx_clk_composite("sai6", imx8mq_sai6_sels, base + 0xa800);
+	clks[IMX8MQ_CLK_SPDIF1] = imx_clk_composite("spdif1", imx8mq_spdif1_sels, base + 0xa880);
+	clks[IMX8MQ_CLK_SPDIF2] = imx_clk_composite("spdif2", imx8mq_spdif2_sels, base + 0xa900);
+	clks[IMX8MQ_CLK_ENET_REF] = imx_clk_composite("enet_ref", imx8mq_enet_ref_sels, base + 0xa980);
+	clks[IMX8MQ_CLK_ENET_TIMER] = imx_clk_composite("enet_timer", imx8mq_enet_timer_sels, base + 0xaa00);
+	clks[IMX8MQ_CLK_ENET_PHY_REF] = imx_clk_composite("enet_phy", imx8mq_enet_phy_sels, base + 0xaa80);
+	clks[IMX8MQ_CLK_NAND] = imx_clk_composite("nand", imx8mq_nand_sels, base + 0xab00);
+	clks[IMX8MQ_CLK_QSPI] = imx_clk_composite("qspi", imx8mq_qspi_sels, base + 0xab80);
+	clks[IMX8MQ_CLK_USDHC1] = imx_clk_composite("usdhc1", imx8mq_usdhc1_sels, base + 0xac00);
+	clks[IMX8MQ_CLK_USDHC2] = imx_clk_composite("usdhc2", imx8mq_usdhc2_sels, base + 0xac80);
+	clks[IMX8MQ_CLK_I2C1] = imx_clk_composite("i2c1", imx8mq_i2c1_sels, base + 0xad00);
+	clks[IMX8MQ_CLK_I2C2] = imx_clk_composite("i2c2", imx8mq_i2c2_sels, base + 0xad80);
+	clks[IMX8MQ_CLK_I2C3] = imx_clk_composite("i2c3", imx8mq_i2c3_sels, base + 0xae00);
+	clks[IMX8MQ_CLK_I2C4] = imx_clk_composite("i2c4", imx8mq_i2c4_sels, base + 0xae80);
+	clks[IMX8MQ_CLK_UART1] = imx_clk_composite("uart1", imx8mq_uart1_sels, base + 0xaf00);
+	clks[IMX8MQ_CLK_UART2] = imx_clk_composite("uart2", imx8mq_uart2_sels, base + 0xaf80);
+	clks[IMX8MQ_CLK_UART3] = imx_clk_composite("uart3", imx8mq_uart3_sels, base + 0xb000);
+	clks[IMX8MQ_CLK_UART4] = imx_clk_composite("uart4", imx8mq_uart4_sels, base + 0xb080);
+	clks[IMX8MQ_CLK_USB_CORE_REF] = imx_clk_composite("usb_core_ref", imx8mq_usb_core_sels, base + 0xb100);
+	clks[IMX8MQ_CLK_USB_PHY_REF] = imx_clk_composite("usb_phy_ref", imx8mq_usb_phy_sels, base + 0xb180);
+	clks[IMX8MQ_CLK_ECSPI1] = imx_clk_composite("ecspi1", imx8mq_ecspi1_sels, base + 0xb280);
+	clks[IMX8MQ_CLK_ECSPI2] = imx_clk_composite("ecspi2", imx8mq_ecspi2_sels, base + 0xb300);
+	clks[IMX8MQ_CLK_PWM1] = imx_clk_composite("pwm1", imx8mq_pwm1_sels, base + 0xb380);
+	clks[IMX8MQ_CLK_PWM2] = imx_clk_composite("pwm2", imx8mq_pwm2_sels, base + 0xb400);
+	clks[IMX8MQ_CLK_PWM3] = imx_clk_composite("pwm3", imx8mq_pwm3_sels, base + 0xb480);
+	clks[IMX8MQ_CLK_PWM4] = imx_clk_composite("pwm4", imx8mq_pwm4_sels, base + 0xb500);
+	clks[IMX8MQ_CLK_GPT1] = imx_clk_composite("gpt1", imx8mq_gpt1_sels, base + 0xb580);
+	clks[IMX8MQ_CLK_WDOG] = imx_clk_composite("wdog", imx8mq_wdog_sels, base + 0xb900);
+	clks[IMX8MQ_CLK_WRCLK] = imx_clk_composite("wrclk", imx8mq_wrclk_sels, base + 0xb980);
+	clks[IMX8MQ_CLK_CLKO2] = imx_clk_composite("clko2", imx8mq_clko2_sels, base + 0xba80);
+	clks[IMX8MQ_CLK_DSI_CORE] = imx_clk_composite("dsi_core", imx8mq_dsi_core_sels, base + 0xbb00);
+	clks[IMX8MQ_CLK_DSI_PHY_REF] = imx_clk_composite("dsi_phy_ref", imx8mq_dsi_phy_sels, base + 0xbb80);
+	clks[IMX8MQ_CLK_DSI_DBI] = imx_clk_composite("dsi_dbi", imx8mq_dsi_dbi_sels, base + 0xbc00);
+	clks[IMX8MQ_CLK_DSI_ESC] = imx_clk_composite("dsi_esc", imx8mq_dsi_esc_sels, base + 0xbc80);
+	clks[IMX8MQ_CLK_DSI_AHB] = imx_clk_composite("dsi_ahb", imx8mq_dsi_ahb_sels, base + 0x9200);
+	clks[IMX8MQ_CLK_CSI1_CORE] = imx_clk_composite("csi1_core", imx8mq_csi1_core_sels, base + 0xbd00);
+	clks[IMX8MQ_CLK_CSI1_PHY_REF] = imx_clk_composite("csi1_phy_ref", imx8mq_csi1_phy_sels, base + 0xbd80);
+	clks[IMX8MQ_CLK_CSI1_ESC] = imx_clk_composite("csi1_esc", imx8mq_csi1_esc_sels, base + 0xbe00);
+	clks[IMX8MQ_CLK_CSI2_CORE] = imx_clk_composite("csi2_core", imx8mq_csi2_core_sels, base + 0xbe80);
+	clks[IMX8MQ_CLK_CSI2_PHY_REF] = imx_clk_composite("csi2_phy_ref", imx8mq_csi2_phy_sels, base + 0xbf00);
+	clks[IMX8MQ_CLK_CSI2_ESC] = imx_clk_composite("csi2_esc", imx8mq_csi2_esc_sels, base + 0xbf80);
+	clks[IMX8MQ_CLK_PCIE2_CTRL] = imx_clk_composite("pcie2_ctrl", imx8mq_pcie2_ctrl_sels, base + 0xc000);
+	clks[IMX8MQ_CLK_PCIE2_PHY] = imx_clk_composite("pcie2_phy", imx8mq_pcie2_phy_sels, base + 0xc080);
+	clks[IMX8MQ_CLK_PCIE2_AUX] = imx_clk_composite("pcie2_aux", imx8mq_pcie2_aux_sels, base + 0xc100);
+	clks[IMX8MQ_CLK_ECSPI3] = imx_clk_composite("ecspi3", imx8mq_ecspi3_sels, base + 0xc180);
+
+	/*FIXME, the doc is not ready now */
+	clks[IMX8MQ_CLK_ECSPI1_ROOT] = imx_clk_gate4("ecspi1_root_clk", "ecspi1", base + 0x4070, 0);
+	clks[IMX8MQ_CLK_ECSPI2_ROOT] = imx_clk_gate4("ecspi2_root_clk", "ecspi2", base + 0x4080, 0);
+	clks[IMX8MQ_CLK_ECSPI3_ROOT] = imx_clk_gate4("ecspi3_root_clk", "ecspi3", base + 0x4090, 0);
+	clks[IMX8MQ_CLK_ENET1_ROOT] = imx_clk_gate4("enet1_root_clk", "enet_axi", base + 0x40a0, 0);
+	clks[IMX8MQ_CLK_GPT1_ROOT] = imx_clk_gate4("gpt1_root_clk", "gpt1", base + 0x4100, 0);
+	clks[IMX8MQ_CLK_I2C1_ROOT] = imx_clk_gate4("i2c1_root_clk", "i2c1", base + 0x4170, 0);
+	clks[IMX8MQ_CLK_I2C2_ROOT] = imx_clk_gate4("i2c2_root_clk", "i2c2", base + 0x4180, 0);
+	clks[IMX8MQ_CLK_I2C3_ROOT] = imx_clk_gate4("i2c3_root_clk", "i2c3", base + 0x4190, 0);
+	clks[IMX8MQ_CLK_I2C4_ROOT] = imx_clk_gate4("i2c4_root_clk", "i2c4", base + 0x41a0, 0);
+	clks[IMX8MQ_CLK_MU_ROOT] = imx_clk_gate4("mu_root_clk", "ipg_root", base + 0x4210, 0);
+	clks[IMX8MQ_CLK_OCOTP_ROOT] = imx_clk_gate4("ocotp_root_clk", "ipg_root", base + 0x4220, 0);
+	clks[IMX8MQ_CLK_PCIE1_ROOT] = imx_clk_gate4("pcie1_root_clk", "pcie1_ctrl", base + 0x4250, 0);
+	clks[IMX8MQ_CLK_PCIE2_ROOT] = imx_clk_gate4("pcie2_root_clk", "pcie2_ctrl", base + 0x4640, 0);
+	clks[IMX8MQ_CLK_PWM1_ROOT] = imx_clk_gate4("pwm1_root_clk", "pwm1", base + 0x4280, 0);
+	clks[IMX8MQ_CLK_PWM2_ROOT] = imx_clk_gate4("pwm2_root_clk", "pwm2", base + 0x4290, 0);
+	clks[IMX8MQ_CLK_PWM3_ROOT] = imx_clk_gate4("pwm3_root_clk", "pwm3", base + 0x42a0, 0);
+	clks[IMX8MQ_CLK_PWM4_ROOT] = imx_clk_gate4("pwm4_root_clk", "pwm4", base + 0x42b0, 0);
+	clks[IMX8MQ_CLK_QSPI_ROOT] = imx_clk_gate4("qspi_root_clk", "qspi", base + 0x42f0, 0);
+	clks[IMX8MQ_CLK_RAWNAND_ROOT] = imx_clk_gate2_shared2("nand_root_clk", "nand", base + 0x4300, 0, &share_count_nand);
+	clks[IMX8MQ_CLK_NAND_USDHC_BUS_RAWNAND_CLK] = imx_clk_gate2_shared2("nand_usdhc_rawnand_clk", "nand_usdhc_bus", base + 0x4300, 0, &share_count_nand);
+	clks[IMX8MQ_CLK_SAI1_ROOT] = imx_clk_gate2_shared2("sai1_root_clk", "sai1", base + 0x4330, 0, &share_count_sai1);
+	clks[IMX8MQ_CLK_SAI1_IPG] = imx_clk_gate2_shared2("sai1_ipg_clk", "ipg_audio_root", base + 0x4330, 0, &share_count_sai1);
+	clks[IMX8MQ_CLK_SAI2_ROOT] = imx_clk_gate2_shared2("sai2_root_clk", "sai2", base + 0x4340, 0, &share_count_sai2);
+	clks[IMX8MQ_CLK_SAI2_IPG] = imx_clk_gate2_shared2("sai2_ipg_clk", "ipg_root", base + 0x4340, 0, &share_count_sai2);
+	clks[IMX8MQ_CLK_SAI3_ROOT] = imx_clk_gate2_shared2("sai3_root_clk", "sai3", base + 0x4350, 0, &share_count_sai3);
+	clks[IMX8MQ_CLK_SAI3_IPG] = imx_clk_gate2_shared2("sai3_ipg_clk", "ipg_root", base + 0x4350, 0, &share_count_sai3);
+	clks[IMX8MQ_CLK_SAI4_ROOT] = imx_clk_gate2_shared2("sai4_root_clk", "sai4", base + 0x4360, 0, &share_count_sai4);
+	clks[IMX8MQ_CLK_SAI4_IPG] = imx_clk_gate2_shared2("sai4_ipg_clk", "ipg_audio_root", base + 0x4360, 0, &share_count_sai4);
+	clks[IMX8MQ_CLK_SAI5_ROOT] = imx_clk_gate2_shared2("sai5_root_clk", "sai5", base + 0x4370, 0, &share_count_sai5);
+	clks[IMX8MQ_CLK_SAI5_IPG] = imx_clk_gate2_shared2("sai5_ipg_clk", "ipg_audio_root", base + 0x4370, 0, &share_count_sai5);
+	clks[IMX8MQ_CLK_SAI6_ROOT] = imx_clk_gate2_shared2("sai6_root_clk", "sai6", base + 0x4380, 0, &share_count_sai6);
+	clks[IMX8MQ_CLK_SAI6_IPG] = imx_clk_gate2_shared2("sai6_ipg_clk", "ipg_audio_root", base + 0x4380, 0, &share_count_sai6);
+	clks[IMX8MQ_CLK_UART1_ROOT] = imx_clk_gate4("uart1_root_clk", "uart1", base + 0x4490, 0);
+	clks[IMX8MQ_CLK_UART2_ROOT] = imx_clk_gate4("uart2_root_clk", "uart2", base + 0x44a0, 0);
+	clks[IMX8MQ_CLK_UART3_ROOT] = imx_clk_gate4("uart3_root_clk", "uart3", base + 0x44b0, 0);
+	clks[IMX8MQ_CLK_UART4_ROOT] = imx_clk_gate4("uart4_root_clk", "uart4", base + 0x44c0, 0);
+	clks[IMX8MQ_CLK_USB1_CTRL_ROOT] = imx_clk_gate4("usb1_ctrl_root_clk", "usb_core_ref", base + 0x44d0, 0);
+	clks[IMX8MQ_CLK_USB2_CTRL_ROOT] = imx_clk_gate4("usb2_ctrl_root_clk", "usb_core_ref", base + 0x44e0, 0);
+	clks[IMX8MQ_CLK_USB1_PHY_ROOT] = imx_clk_gate4("usb1_phy_root_clk", "usb_phy_ref", base + 0x44f0, 0);
+	clks[IMX8MQ_CLK_USB2_PHY_ROOT] = imx_clk_gate4("usb2_phy_root_clk", "usb_phy_ref", base + 0x4500, 0);
+	clks[IMX8MQ_CLK_USDHC1_ROOT] = imx_clk_gate4("usdhc1_root_clk", "usdhc1", base + 0x4510, 0);
+	clks[IMX8MQ_CLK_USDHC2_ROOT] = imx_clk_gate4("usdhc2_root_clk", "usdhc2", base + 0x4520, 0);
+	clks[IMX8MQ_CLK_WDOG1_ROOT] = imx_clk_gate4("wdog1_root_clk", "wdog", base + 0x4530, 0);
+	clks[IMX8MQ_CLK_WDOG2_ROOT] = imx_clk_gate4("wdog2_root_clk", "wdog", base + 0x4540, 0);
+	clks[IMX8MQ_CLK_WDOG3_ROOT] = imx_clk_gate4("wdog3_root_clk", "wdog", base + 0x4550, 0);
+	clks[IMX8MQ_CLK_VPU_G1_ROOT] = imx_clk_gate2_flags("vpu_g1_root_clk", "vpu_g1", base + 0x4560, 0, CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE);
+	clks[IMX8MQ_CLK_GPU_ROOT] = imx_clk_gate4("gpu_root_clk", "gpu_core_div", base + 0x4570, 0);
+	clks[IMX8MQ_CLK_VPU_G2_ROOT] = imx_clk_gate2_flags("vpu_g2_root_clk", "vpu_g2", base + 0x45a0, 0, CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE);
+	clks[IMX8MQ_CLK_DISP_ROOT] = imx_clk_gate2_shared2("disp_root_clk", "disp_dc8000", base + 0x45d0, 0, &share_count_dcss);
+	clks[IMX8MQ_CLK_DISP_AXI_ROOT]  = imx_clk_gate2_shared2("disp_axi_root_clk", "disp_axi", base + 0x45d0, 0, &share_count_dcss);
+	clks[IMX8MQ_CLK_DISP_APB_ROOT]  = imx_clk_gate2_shared2("disp_apb_root_clk", "disp_apb", base + 0x45d0, 0, &share_count_dcss);
+	clks[IMX8MQ_CLK_DISP_RTRM_ROOT] = imx_clk_gate2_shared2("disp_rtrm_root_clk", "disp_rtrm", base + 0x45d0, 0, &share_count_dcss);
+	clks[IMX8MQ_CLK_TMU_ROOT] = imx_clk_gate4_flags("tmu_root_clk", "ipg_root", base + 0x4620, 0, CLK_IS_CRITICAL);
+	clks[IMX8MQ_CLK_VPU_DEC_ROOT] = imx_clk_gate2_flags("vpu_dec_root_clk", "vpu_bus", base + 0x4630, 0, CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE);
+	clks[IMX8MQ_CLK_CSI1_ROOT] = imx_clk_gate4("csi1_root_clk", "csi1_core", base + 0x4650, 0);
+	clks[IMX8MQ_CLK_CSI2_ROOT] = imx_clk_gate4("csi2_root_clk", "csi2_core", base + 0x4660, 0);
+	clks[IMX8MQ_CLK_SDMA1_ROOT] = imx_clk_gate4("sdma1_clk", "ipg_root", base + 0x43a0, 0);
+	clks[IMX8MQ_CLK_SDMA2_ROOT] = imx_clk_gate4("sdma2_clk", "ipg_audio_root", base + 0x43b0, 0);
+
+	clks[IMX8MQ_GPT_3M_CLK] = imx_clk_fixed_factor("gpt_3m", "osc_25m", 1, 8);
+	clks[IMX8MQ_CLK_DRAM_ALT_ROOT] = imx_clk_fixed_factor("dram_alt_root", "dram_alt", 1, 4);
+
+	for (i = 0; i < IMX8MQ_CLK_END; i++)
+		if (IS_ERR(clks[i]))
+			pr_err("i.MX8mq clk %u register failed with %ld\n",
+			       i, PTR_ERR(clks[i]));
+
+	clk_data.clks = clks;
+	clk_data.clk_num = ARRAY_SIZE(clks);
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+
+	clk_set_parent(clks[IMX8MQ_CLK_AHB], clks[IMX8MQ_SYS1_PLL_133M]);
+	clk_set_parent(clks[IMX8MQ_CLK_NAND_USDHC_BUS], clks[IMX8MQ_SYS1_PLL_266M]);
+	clk_set_parent(clks[IMX8MQ_CLK_AUDIO_AHB], clks[IMX8MQ_SYS2_PLL_500M]);
+
+	/* config video_pll1 clock */
+	clk_set_parent(clks[IMX8MQ_VIDEO_PLL1_REF_SEL], clks[IMX8MQ_CLK_27M]);
+	clk_set_rate(clks[IMX8MQ_VIDEO_PLL1], 593999999);
+
+	/* increase NOC clock to achieve best DDR access performance */
+	clk_set_rate(clks[IMX8MQ_CLK_NOC], clk_get_rate(clks[IMX8MQ_SYS1_PLL_800M]));
+
+	/* set pcie root's parent clk source */
+	clk_set_parent(clks[IMX8MQ_CLK_PCIE1_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
+	clk_set_parent(clks[IMX8MQ_CLK_PCIE1_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
+	clk_set_parent(clks[IMX8MQ_CLK_PCIE2_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
+	clk_set_parent(clks[IMX8MQ_CLK_PCIE2_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
+
+	clk_set_parent(clks[IMX8MQ_CLK_CSI1_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
+	clk_set_parent(clks[IMX8MQ_CLK_CSI1_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
+	clk_set_parent(clks[IMX8MQ_CLK_CSI1_ESC], clks[IMX8MQ_SYS1_PLL_800M]);
+	clk_set_parent(clks[IMX8MQ_CLK_CSI2_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
+	clk_set_parent(clks[IMX8MQ_CLK_CSI2_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
+	clk_set_parent(clks[IMX8MQ_CLK_CSI2_ESC], clks[IMX8MQ_SYS1_PLL_800M]);
+}
+
+CLK_OF_DECLARE(imx8mq, "fsl,imx8mq-ccm", imx8mq_clocks_init);
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 9d7c9c8..64faf27 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -128,6 +128,15 @@ static inline struct clk *imx_clk_divider2(const char *name, const char *parent,
 			reg, shift, width, 0, &imx_ccm_lock);
 }
 
+static inline struct clk *imx_clk_divider2_flags(const char *name,
+		const char *parent, void __iomem *reg, u8 shift, u8 width,
+		unsigned long flags)
+{
+	return clk_register_divider(NULL, name, parent,
+			flags | CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+			reg, shift, width, 0, &imx_ccm_lock);
+}
+
 static inline struct clk *imx_clk_gate(const char *name, const char *parent,
 		void __iomem *reg, u8 shift)
 {
@@ -195,6 +204,15 @@ static inline struct clk *imx_clk_gate3(const char *name, const char *parent,
 			reg, shift, 0, &imx_ccm_lock);
 }
 
+static inline struct clk *imx_clk_gate3_flags(const char *name,
+		const char *parent, void __iomem *reg, u8 shift,
+		unsigned long flags)
+{
+	return clk_register_gate(NULL, name, parent,
+			flags | CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+			reg, shift, 0, &imx_ccm_lock);
+}
+
 static inline struct clk *imx_clk_gate4(const char *name, const char *parent,
 		void __iomem *reg, u8 shift)
 {
@@ -203,6 +221,15 @@ static inline struct clk *imx_clk_gate4(const char *name, const char *parent,
 			reg, shift, 0x3, 0, &imx_ccm_lock, NULL);
 }
 
+static inline struct clk *imx_clk_gate4_flags(const char *name,
+		const char *parent, void __iomem *reg, u8 shift,
+		unsigned long flags)
+{
+	return clk_register_gate2(NULL, name, parent,
+			flags | CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+			reg, shift, 0x3, 0, &imx_ccm_lock, NULL);
+}
+
 static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg,
 		u8 shift, u8 width, const char **parents, int num_parents)
 {
@@ -228,6 +255,15 @@ static inline struct clk *imx_clk_mux_flags(const char *name,
 			&imx_ccm_lock);
 }
 
+static inline struct clk *imx_clk_mux2_flags(const char *name,
+		void __iomem *reg, u8 shift, u8 width, const char **parents,
+		int num_parents, unsigned long flags)
+{
+	return clk_register_mux(NULL, name, parents, num_parents,
+			flags | CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE,
+			reg, shift, width, 0, &imx_ccm_lock);
+}
+
 struct clk *imx_clk_cpu(const char *name, const char *parent_name,
 		struct clk *div, struct clk *mux, struct clk *pll,
 		struct clk *step);
-- 
2.7.4

Re: [PATCH v9 5/5] clk: imx: add clock driver for i.MX8MQ CCM

[Stephen Boyd]

Quoting Abel Vesa (2018-09-24 03:39:57)
> From: Lucas Stach <l.stach@pengutronix.de>
> 
> Add driver for the Clock Control Module found on i.MX8MQ.
> 
> This is largely based on the downstream driver from Anson Huang and
> Bai Ping at NXP, plus the imx composite clock from Abel Vesa at NXP,
> with only some small adaptions to mainline from me.

Can you point to the downstream driver so we can know what small
adaptations were made.

> 
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> ---
>  drivers/clk/imx/Makefile     |   1 +
>  drivers/clk/imx/clk-imx8mq.c | 602 +++++++++++++++++++++++++++++++++++++++++++
>  drivers/clk/imx/clk.h        |  36 +++
>  3 files changed, 639 insertions(+)
>  create mode 100644 drivers/clk/imx/clk-imx8mq.c
> 
> diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> index 4fabb0a..64e695c 100644
> --- a/drivers/clk/imx/Makefile
> +++ b/drivers/clk/imx/Makefile
> @@ -30,3 +30,4 @@ obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o
>  obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o
>  obj-$(CONFIG_SOC_IMX7D)  += clk-imx7d.o
>  obj-$(CONFIG_SOC_VF610)  += clk-vf610.o
> +obj-$(CONFIG_SOC_IMX8MQ) += clk-imx8mq.o

Please try to keep this alphabetical on CONFIG symbol.

> diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
> new file mode 100644
> index 0000000..aadb523
> --- /dev/null
> +++ b/drivers/clk/imx/clk-imx8mq.c
> @@ -0,0 +1,602 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2018 NXP.
> + * Copyright (C) 2017 Pengutronix, Lucas Stach <kernel@pengutronix.de>
> + */
> +
> +#include <dt-bindings/clock/imx8mq-clock.h>
> +#include <linux/clk.h>
> +#include <linux/clkdev.h>

Are these two includes used?

> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/io.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/of_irq.h>
> +#include <linux/types.h>
> +
> +#include "clk.h"
> +
> +static u32 share_count_sai1;
> +static u32 share_count_sai2;
> +static u32 share_count_sai3;
> +static u32 share_count_sai4;
> +static u32 share_count_sai5;
> +static u32 share_count_sai6;
> +static u32 share_count_dcss;
> +static u32 share_count_nand;
> +
[...]
> +
> +static const char *imx8mq_ecspi3_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
> +                                          "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
> +static const char *imx8mq_dram_core_sels[] = {"dram_pll_out", "dram_alt_root", };
> +
> +static const char *imx8mq_clko2_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_400m", "sys2_pll_166m", "audio_pll1_out",
> +                                        "video_pll1_out", "ckil", };
> +
> +static struct clk_onecell_data clk_data;
> +
> +static void __init imx8mq_clocks_init(struct device_node *ccm_node)
> +{
> +       struct device_node *np;
> +       void __iomem *base;
> +       int i;
> +
> +       clks[IMX8MQ_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
> +       clks[IMX8MQ_CLK_32K] = of_clk_get_by_name(ccm_node, "ckil");
> +       clks[IMX8MQ_CLK_25M] = of_clk_get_by_name(ccm_node, "osc_25m");
> +       clks[IMX8MQ_CLK_27M] = of_clk_get_by_name(ccm_node, "osc_27m");
> +       clks[IMX8MQ_CLK_EXT1] = of_clk_get_by_name(ccm_node, "clk_ext1");
> +       clks[IMX8MQ_CLK_EXT2] = of_clk_get_by_name(ccm_node, "clk_ext2");
> +       clks[IMX8MQ_CLK_EXT3] = of_clk_get_by_name(ccm_node, "clk_ext3");
> +       clks[IMX8MQ_CLK_EXT4] = of_clk_get_by_name(ccm_node, "clk_ext4");
> +
> +       np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-anatop");
> +       base = of_iomap(np, 0);
> +       WARN_ON(!base);

And if that fails? return without continuing?

> +
> +       clks[IMX8MQ_ARM_PLL_REF_SEL] = imx_clk_mux("arm_pll_ref_sel", base + 0x28, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> +       clks[IMX8MQ_GPU_PLL_REF_SEL] = imx_clk_mux("gpu_pll_ref_sel", base + 0x18, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> +       clks[IMX8MQ_VPU_PLL_REF_SEL] = imx_clk_mux("vpu_pll_ref_sel", base + 0x20, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> +       clks[IMX8MQ_AUDIO_PLL1_REF_SEL] = imx_clk_mux("audio_pll1_ref_sel", base + 0x0, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
[..]
> +       clks[IMX8MQ_CLK_DSI_CORE] = imx_clk_composite("dsi_core", imx8mq_dsi_core_sels, base + 0xbb00);
> +       clks[IMX8MQ_CLK_DSI_PHY_REF] = imx_clk_composite("dsi_phy_ref", imx8mq_dsi_phy_sels, base + 0xbb80);
> +       clks[IMX8MQ_CLK_DSI_DBI] = imx_clk_composite("dsi_dbi", imx8mq_dsi_dbi_sels, base + 0xbc00);
> +       clks[IMX8MQ_CLK_DSI_ESC] = imx_clk_composite("dsi_esc", imx8mq_dsi_esc_sels, base + 0xbc80);
> +       clks[IMX8MQ_CLK_DSI_AHB] = imx_clk_composite("dsi_ahb", imx8mq_dsi_ahb_sels, base + 0x9200);
> +       clks[IMX8MQ_CLK_CSI1_CORE] = imx_clk_composite("csi1_core", imx8mq_csi1_core_sels, base + 0xbd00);
> +       clks[IMX8MQ_CLK_CSI1_PHY_REF] = imx_clk_composite("csi1_phy_ref", imx8mq_csi1_phy_sels, base + 0xbd80);
> +       clks[IMX8MQ_CLK_CSI1_ESC] = imx_clk_composite("csi1_esc", imx8mq_csi1_esc_sels, base + 0xbe00);
> +       clks[IMX8MQ_CLK_CSI2_CORE] = imx_clk_composite("csi2_core", imx8mq_csi2_core_sels, base + 0xbe80);
> +       clks[IMX8MQ_CLK_CSI2_PHY_REF] = imx_clk_composite("csi2_phy_ref", imx8mq_csi2_phy_sels, base + 0xbf00);
> +       clks[IMX8MQ_CLK_CSI2_ESC] = imx_clk_composite("csi2_esc", imx8mq_csi2_esc_sels, base + 0xbf80);
> +       clks[IMX8MQ_CLK_PCIE2_CTRL] = imx_clk_composite("pcie2_ctrl", imx8mq_pcie2_ctrl_sels, base + 0xc000);
> +       clks[IMX8MQ_CLK_PCIE2_PHY] = imx_clk_composite("pcie2_phy", imx8mq_pcie2_phy_sels, base + 0xc080);
> +       clks[IMX8MQ_CLK_PCIE2_AUX] = imx_clk_composite("pcie2_aux", imx8mq_pcie2_aux_sels, base + 0xc100);
> +       clks[IMX8MQ_CLK_ECSPI3] = imx_clk_composite("ecspi3", imx8mq_ecspi3_sels, base + 0xc180);
> +
> +       /*FIXME, the doc is not ready now */

What does this mean?

> +       clks[IMX8MQ_CLK_ECSPI1_ROOT] = imx_clk_gate4("ecspi1_root_clk", "ecspi1", base + 0x4070, 0);
> +       clks[IMX8MQ_CLK_ECSPI2_ROOT] = imx_clk_gate4("ecspi2_root_clk", "ecspi2", base + 0x4080, 0);
> +       clks[IMX8MQ_CLK_ECSPI3_ROOT] = imx_clk_gate4("ecspi3_root_clk", "ecspi3", base + 0x4090, 0);
> +       clks[IMX8MQ_CLK_ENET1_ROOT] = imx_clk_gate4("enet1_root_clk", "enet_axi", base + 0x40a0, 0);
> +       clks[IMX8MQ_CLK_GPT1_ROOT] = imx_clk_gate4("gpt1_root_clk", "gpt1", base + 0x4100, 0);
[...]
> +
> +       clks[IMX8MQ_GPT_3M_CLK] = imx_clk_fixed_factor("gpt_3m", "osc_25m", 1, 8);
> +       clks[IMX8MQ_CLK_DRAM_ALT_ROOT] = imx_clk_fixed_factor("dram_alt_root", "dram_alt", 1, 4);
> +
> +       for (i = 0; i < IMX8MQ_CLK_END; i++)
> +               if (IS_ERR(clks[i]))
> +                       pr_err("i.MX8mq clk %u register failed with %ld\n",
> +                              i, PTR_ERR(clks[i]));
> +
> +       clk_data.clks = clks;
> +       clk_data.clk_num = ARRAY_SIZE(clks);
> +       of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);

Any chance to move to using clk_hw based provider and clk registration
APIs?

> +
> +       clk_set_parent(clks[IMX8MQ_CLK_AHB], clks[IMX8MQ_SYS1_PLL_133M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_NAND_USDHC_BUS], clks[IMX8MQ_SYS1_PLL_266M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_AUDIO_AHB], clks[IMX8MQ_SYS2_PLL_500M]);
> +
> +       /* config video_pll1 clock */
> +       clk_set_parent(clks[IMX8MQ_VIDEO_PLL1_REF_SEL], clks[IMX8MQ_CLK_27M]);
> +       clk_set_rate(clks[IMX8MQ_VIDEO_PLL1], 593999999);
> +
> +       /* increase NOC clock to achieve best DDR access performance */
> +       clk_set_rate(clks[IMX8MQ_CLK_NOC], clk_get_rate(clks[IMX8MQ_SYS1_PLL_800M]));
> +
> +       /* set pcie root's parent clk source */
> +       clk_set_parent(clks[IMX8MQ_CLK_PCIE1_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_PCIE1_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_PCIE2_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_PCIE2_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
> +
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_ESC], clks[IMX8MQ_SYS1_PLL_800M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
> +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_ESC], clks[IMX8MQ_SYS1_PLL_800M]);

Can this be done with assigned clock parents and assigned clock rates?

> +}
> +
> +CLK_OF_DECLARE(imx8mq, "fsl,imx8mq-ccm", imx8mq_clocks_init);

Can you please add a comment indicating why this can't be done with a
platform driver, or convert this to be a platform driver?

Re: [PATCH v9 5/5] clk: imx: add clock driver for i.MX8MQ CCM

[Abel Vesa]

On Wed, Oct 17, 2018 at 12:44:52PM -0700, Stephen Boyd wrote:
> Quoting Abel Vesa (2018-09-24 03:39:57)
> > From: Lucas Stach <l.stach@pengutronix.de>
> > 
> > Add driver for the Clock Control Module found on i.MX8MQ.
> > 
> > This is largely based on the downstream driver from Anson Huang and
> > Bai Ping at NXP, plus the imx composite clock from Abel Vesa at NXP,
> > with only some small adaptions to mainline from me.
> 
> Can you point to the downstream driver so we can know what small
> adaptations were made.
> 

It's was implemented originally in NXP's internal tree. The adaptations
to the initial implementation are not that small anymore. I even changed the
authorship since it has changed quite a lot compared to the initial version.

> > 
> > Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> > Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> > ---
> >  drivers/clk/imx/Makefile     |   1 +
> >  drivers/clk/imx/clk-imx8mq.c | 602 +++++++++++++++++++++++++++++++++++++++++++
> >  drivers/clk/imx/clk.h        |  36 +++
> >  3 files changed, 639 insertions(+)
> >  create mode 100644 drivers/clk/imx/clk-imx8mq.c
> > 
> > diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> > index 4fabb0a..64e695c 100644
> > --- a/drivers/clk/imx/Makefile
> > +++ b/drivers/clk/imx/Makefile
> > @@ -30,3 +30,4 @@ obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o
> >  obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o
> >  obj-$(CONFIG_SOC_IMX7D)  += clk-imx7d.o
> >  obj-$(CONFIG_SOC_VF610)  += clk-vf610.o
> > +obj-$(CONFIG_SOC_IMX8MQ) += clk-imx8mq.o
> 
> Please try to keep this alphabetical on CONFIG symbol.
> 

Fixed in the next version.

> > diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
> > new file mode 100644
> > index 0000000..aadb523
> > --- /dev/null
> > +++ b/drivers/clk/imx/clk-imx8mq.c
> > @@ -0,0 +1,602 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright 2018 NXP.
> > + * Copyright (C) 2017 Pengutronix, Lucas Stach <kernel@pengutronix.de>
> > + */
> > +
> > +#include <dt-bindings/clock/imx8mq-clock.h>
> > +#include <linux/clk.h>
> > +#include <linux/clkdev.h>
> 
> Are these two includes used?
> 

clkdev.h include is removed in the next version.
clk.h is needed by of_clk_get_by_name.

> > +#include <linux/err.h>
> > +#include <linux/init.h>
> > +#include <linux/io.h>
> > +#include <linux/of.h>
> > +#include <linux/of_address.h>
> > +#include <linux/of_irq.h>
> > +#include <linux/types.h>
> > +
> > +#include "clk.h"
> > +
> > +static u32 share_count_sai1;
> > +static u32 share_count_sai2;
> > +static u32 share_count_sai3;
> > +static u32 share_count_sai4;
> > +static u32 share_count_sai5;
> > +static u32 share_count_sai6;
> > +static u32 share_count_dcss;
> > +static u32 share_count_nand;
> > +
> [...]
> > +
> > +static const char *imx8mq_ecspi3_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_40m", "sys1_pll_160m",
> > +                                          "sys1_pll_800m", "sys3_pll2_out", "sys2_pll_250m", "audio_pll2_out", };
> > +static const char *imx8mq_dram_core_sels[] = {"dram_pll_out", "dram_alt_root", };
> > +
> > +static const char *imx8mq_clko2_sels[] = {"osc_25m", "sys2_pll_200m", "sys1_pll_400m", "sys2_pll_166m", "audio_pll1_out",
> > +                                        "video_pll1_out", "ckil", };
> > +
> > +static struct clk_onecell_data clk_data;
> > +
> > +static void __init imx8mq_clocks_init(struct device_node *ccm_node)
> > +{
> > +       struct device_node *np;
> > +       void __iomem *base;
> > +       int i;
> > +
> > +       clks[IMX8MQ_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
> > +       clks[IMX8MQ_CLK_32K] = of_clk_get_by_name(ccm_node, "ckil");
> > +       clks[IMX8MQ_CLK_25M] = of_clk_get_by_name(ccm_node, "osc_25m");
> > +       clks[IMX8MQ_CLK_27M] = of_clk_get_by_name(ccm_node, "osc_27m");
> > +       clks[IMX8MQ_CLK_EXT1] = of_clk_get_by_name(ccm_node, "clk_ext1");
> > +       clks[IMX8MQ_CLK_EXT2] = of_clk_get_by_name(ccm_node, "clk_ext2");
> > +       clks[IMX8MQ_CLK_EXT3] = of_clk_get_by_name(ccm_node, "clk_ext3");
> > +       clks[IMX8MQ_CLK_EXT4] = of_clk_get_by_name(ccm_node, "clk_ext4");
> > +
> > +       np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-anatop");
> > +       base = of_iomap(np, 0);
> > +       WARN_ON(!base);
> 
> And if that fails? return without continuing?
> 

Fixed in the next version.

> > +
> > +       clks[IMX8MQ_ARM_PLL_REF_SEL] = imx_clk_mux("arm_pll_ref_sel", base + 0x28, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> > +       clks[IMX8MQ_GPU_PLL_REF_SEL] = imx_clk_mux("gpu_pll_ref_sel", base + 0x18, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> > +       clks[IMX8MQ_VPU_PLL_REF_SEL] = imx_clk_mux("vpu_pll_ref_sel", base + 0x20, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> > +       clks[IMX8MQ_AUDIO_PLL1_REF_SEL] = imx_clk_mux("audio_pll1_ref_sel", base + 0x0, 16, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
> [..]
> > +       clks[IMX8MQ_CLK_DSI_CORE] = imx_clk_composite("dsi_core", imx8mq_dsi_core_sels, base + 0xbb00);
> > +       clks[IMX8MQ_CLK_DSI_PHY_REF] = imx_clk_composite("dsi_phy_ref", imx8mq_dsi_phy_sels, base + 0xbb80);
> > +       clks[IMX8MQ_CLK_DSI_DBI] = imx_clk_composite("dsi_dbi", imx8mq_dsi_dbi_sels, base + 0xbc00);
> > +       clks[IMX8MQ_CLK_DSI_ESC] = imx_clk_composite("dsi_esc", imx8mq_dsi_esc_sels, base + 0xbc80);
> > +       clks[IMX8MQ_CLK_DSI_AHB] = imx_clk_composite("dsi_ahb", imx8mq_dsi_ahb_sels, base + 0x9200);
> > +       clks[IMX8MQ_CLK_CSI1_CORE] = imx_clk_composite("csi1_core", imx8mq_csi1_core_sels, base + 0xbd00);
> > +       clks[IMX8MQ_CLK_CSI1_PHY_REF] = imx_clk_composite("csi1_phy_ref", imx8mq_csi1_phy_sels, base + 0xbd80);
> > +       clks[IMX8MQ_CLK_CSI1_ESC] = imx_clk_composite("csi1_esc", imx8mq_csi1_esc_sels, base + 0xbe00);
> > +       clks[IMX8MQ_CLK_CSI2_CORE] = imx_clk_composite("csi2_core", imx8mq_csi2_core_sels, base + 0xbe80);
> > +       clks[IMX8MQ_CLK_CSI2_PHY_REF] = imx_clk_composite("csi2_phy_ref", imx8mq_csi2_phy_sels, base + 0xbf00);
> > +       clks[IMX8MQ_CLK_CSI2_ESC] = imx_clk_composite("csi2_esc", imx8mq_csi2_esc_sels, base + 0xbf80);
> > +       clks[IMX8MQ_CLK_PCIE2_CTRL] = imx_clk_composite("pcie2_ctrl", imx8mq_pcie2_ctrl_sels, base + 0xc000);
> > +       clks[IMX8MQ_CLK_PCIE2_PHY] = imx_clk_composite("pcie2_phy", imx8mq_pcie2_phy_sels, base + 0xc080);
> > +       clks[IMX8MQ_CLK_PCIE2_AUX] = imx_clk_composite("pcie2_aux", imx8mq_pcie2_aux_sels, base + 0xc100);
> > +       clks[IMX8MQ_CLK_ECSPI3] = imx_clk_composite("ecspi3", imx8mq_ecspi3_sels, base + 0xc180);
> > +
> > +       /*FIXME, the doc is not ready now */
> 
> What does this mean?
> 

The comment does not apply anymore. It is remoed in the next version.
When the driver was initially implemented, the specs doc was not ready.

> > +       clks[IMX8MQ_CLK_ECSPI1_ROOT] = imx_clk_gate4("ecspi1_root_clk", "ecspi1", base + 0x4070, 0);
> > +       clks[IMX8MQ_CLK_ECSPI2_ROOT] = imx_clk_gate4("ecspi2_root_clk", "ecspi2", base + 0x4080, 0);
> > +       clks[IMX8MQ_CLK_ECSPI3_ROOT] = imx_clk_gate4("ecspi3_root_clk", "ecspi3", base + 0x4090, 0);
> > +       clks[IMX8MQ_CLK_ENET1_ROOT] = imx_clk_gate4("enet1_root_clk", "enet_axi", base + 0x40a0, 0);
> > +       clks[IMX8MQ_CLK_GPT1_ROOT] = imx_clk_gate4("gpt1_root_clk", "gpt1", base + 0x4100, 0);
> [...]
> > +
> > +       clks[IMX8MQ_GPT_3M_CLK] = imx_clk_fixed_factor("gpt_3m", "osc_25m", 1, 8);
> > +       clks[IMX8MQ_CLK_DRAM_ALT_ROOT] = imx_clk_fixed_factor("dram_alt_root", "dram_alt", 1, 4);
> > +
> > +       for (i = 0; i < IMX8MQ_CLK_END; i++)
> > +               if (IS_ERR(clks[i]))
> > +                       pr_err("i.MX8mq clk %u register failed with %ld\n",
> > +                              i, PTR_ERR(clks[i]));
> > +
> > +       clk_data.clks = clks;
> > +       clk_data.clk_num = ARRAY_SIZE(clks);
> > +       of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
> 
> Any chance to move to using clk_hw based provider and clk registration
> APIs?
> 

Since a lot of the imx clocks that are already upstream and since it's not
quite a small change, I would prefer if this would go in as is. I intend to
make the switch to clk_hw based registration later, but it will take some time
for me to get that ready and that would delay the upstream of imx8mq drivers
even more.

All the new clock types introduced now are clk_hw based.

> > +
> > +       clk_set_parent(clks[IMX8MQ_CLK_AHB], clks[IMX8MQ_SYS1_PLL_133M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_NAND_USDHC_BUS], clks[IMX8MQ_SYS1_PLL_266M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_AUDIO_AHB], clks[IMX8MQ_SYS2_PLL_500M]);
> > +
> > +       /* config video_pll1 clock */
> > +       clk_set_parent(clks[IMX8MQ_VIDEO_PLL1_REF_SEL], clks[IMX8MQ_CLK_27M]);
> > +       clk_set_rate(clks[IMX8MQ_VIDEO_PLL1], 593999999);
> > +
> > +       /* increase NOC clock to achieve best DDR access performance */
> > +       clk_set_rate(clks[IMX8MQ_CLK_NOC], clk_get_rate(clks[IMX8MQ_SYS1_PLL_800M]));
> > +
> > +       /* set pcie root's parent clk source */
> > +       clk_set_parent(clks[IMX8MQ_CLK_PCIE1_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_PCIE1_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_PCIE2_CTRL], clks[IMX8MQ_SYS2_PLL_250M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_PCIE2_PHY], clks[IMX8MQ_SYS2_PLL_100M]);
> > +
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI1_ESC], clks[IMX8MQ_SYS1_PLL_800M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_CORE], clks[IMX8MQ_SYS1_PLL_266M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_PHY_REF], clks[IMX8MQ_SYS2_PLL_1000M]);
> > +       clk_set_parent(clks[IMX8MQ_CLK_CSI2_ESC], clks[IMX8MQ_SYS1_PLL_800M]);
> 
> Can this be done with assigned clock parents and assigned clock rates?
> 

Fair enough. Removed entirely in the next version. Each driver will set its
own rate and parent in dts later on.

> > +}
> > +
> > +CLK_OF_DECLARE(imx8mq, "fsl,imx8mq-ccm", imx8mq_clocks_init);
> 
> Can you please add a comment indicating why this can't be done with a
> platform driver, or convert this to be a platform driver?
> 

Good point. Switched to platform driver.

Thanks

--