[PATCH v2 0/5] add MFD support for MediaTek audio subsystem

[PATCH v2 0/5] add MFD support for MediaTek audio subsystem

[Ryder Lee]

Hi,

This is the 2nd version of the patch sets which modify clock driver to adapt
audio subsystem.  I still keeping 'simple-mfd' in the binding for discussion.
Rob, let me know if there is any problem with this.

changes since v2:
 - Drop useless changes in clk-mt7622-aud.c.
 - Revise binding text: 
	- Add more information about audio subsystem.
	- Separate clock node and AFE node.
 - Update license header.
changes since v1:
 - To avoid writing an MFD driver, we add "simple-mfd" in the audsys binding.
 - Move three top clocks to audio driver [1] as we remove mfd/mtk-audsys.c in v1.

Ryder Lee (5):
  clk: mediatek: update missing clock data for MT7622 audsys
  clk: mediatek: modify MT7622 audsys to adapt MFD device
  clk: mediatek: add audsys support for MT2701
  dt-bindings: clock: mediatek: update audsys documentation to adapt MFD
    device
  arm: dts: mediatek: add audio-subsystem node for both MT2701 and
    MT7623

 .../bindings/arm/mediatek/mediatek,audsys.txt      |  37 +++-
 arch/arm/boot/dts/mt2701.dtsi                      | 192 ++++++++++----------
 arch/arm/boot/dts/mt7623.dtsi                      | 193 ++++++++++-----------
 drivers/clk/mediatek/Kconfig                       |   6 +
 drivers/clk/mediatek/Makefile                      |   1 +
 drivers/clk/mediatek/clk-mt2701-aud.c              | 175 +++++++++++++++++++
 drivers/clk/mediatek/clk-mt7622-aud.c              |   4 +-
 include/dt-bindings/clock/mt7622-clk.h             |   3 +-
 8 files changed, 406 insertions(+), 205 deletions(-)
 create mode 100644 drivers/clk/mediatek/clk-mt2701-aud.c

-- 
1.9.1

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[PATCH v2 1/5] clk: mediatek: update missing clock data for MT7622 audsys

[Ryder Lee]

Add missing clock data 'CLK_AUDIO_AFE_CONN' for MT7622 audsys.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
 drivers/clk/mediatek/clk-mt7622-aud.c  | 1 +
 include/dt-bindings/clock/mt7622-clk.h | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
index fad7d9f..13f752d 100644
--- a/drivers/clk/mediatek/clk-mt7622-aud.c
+++ b/drivers/clk/mediatek/clk-mt7622-aud.c
@@ -106,6 +106,7 @@
 	GATE_AUDIO1(CLK_AUDIO_INTDIR, "audio_intdir", "intdir_sel", 20),
 	GATE_AUDIO1(CLK_AUDIO_A1SYS, "audio_a1sys", "a1sys_hp_sel", 21),
 	GATE_AUDIO1(CLK_AUDIO_A2SYS, "audio_a2sys", "a2sys_hp_sel", 22),
+	GATE_AUDIO1(CLK_AUDIO_AFE_CONN, "audio_afe_conn", "a1sys_hp_sel", 23),
 	/* AUDIO2 */
 	GATE_AUDIO2(CLK_AUDIO_UL1, "audio_ul1", "a1sys_hp_sel", 0),
 	GATE_AUDIO2(CLK_AUDIO_UL2, "audio_ul2", "a1sys_hp_sel", 1),
diff --git a/include/dt-bindings/clock/mt7622-clk.h b/include/dt-bindings/clock/mt7622-clk.h
index 3e514ed..e9d77f0 100644
--- a/include/dt-bindings/clock/mt7622-clk.h
+++ b/include/dt-bindings/clock/mt7622-clk.h
@@ -235,7 +235,8 @@
 #define CLK_AUDIO_MEM_ASRC3		43
 #define CLK_AUDIO_MEM_ASRC4		44
 #define CLK_AUDIO_MEM_ASRC5		45
-#define CLK_AUDIO_NR_CLK		46
+#define CLK_AUDIO_AFE_CONN		46
+#define CLK_AUDIO_NR_CLK		47
 
 /* SSUSBSYS */
 
-- 
1.9.1

[PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Ryder Lee]

As the new MFD parent is in place, switch probing method to adapt it.

Signed-off-by: Ryder Lee <ryder.lee-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
 drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
index 13f752d..8c18536 100644
--- a/drivers/clk/mediatek/clk-mt7622-aud.c
+++ b/drivers/clk/mediatek/clk-mt7622-aud.c
@@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
 {
 	struct clk_onecell_data *clk_data;
 	struct device_node *node = pdev->dev.of_node;
+	struct device_node *pnode = pdev->dev.parent->of_node;
 	int r;
 
 	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
 
-	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
+	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
 			       clk_data);
 
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
-- 
1.9.1

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[PATCH v2 3/5] clk: mediatek: add audsys support for MT2701

[Ryder Lee]

Add clock driver support for MT2701 audsys.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
 drivers/clk/mediatek/Kconfig          |   6 ++
 drivers/clk/mediatek/Makefile         |   1 +
 drivers/clk/mediatek/clk-mt2701-aud.c | 175 ++++++++++++++++++++++++++++++++++
 3 files changed, 182 insertions(+)
 create mode 100644 drivers/clk/mediatek/clk-mt2701-aud.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index 59dc0aa..efb6f58 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -50,6 +50,12 @@ config COMMON_CLK_MT2701_BDPSYS
 	---help---
 	  This driver supports Mediatek MT2701 bdpsys clocks.
 
+config COMMON_CLK_MT2701_AUDSYS
+	bool "Clock driver for Mediatek MT2701 audsys"
+	depends on COMMON_CLK_MT2701
+	---help---
+	  This driver supports Mediatek MT2701 audsys clocks.
+
 config COMMON_CLK_MT2712
 	bool "Clock driver for Mediatek MT2712"
 	depends on (ARCH_MEDIATEK && ARM64) || COMPILE_TEST
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index c421ffc..c4ab7d3 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_COMMON_CLK_MT6797_MMSYS) += clk-mt6797-mm.o
 obj-$(CONFIG_COMMON_CLK_MT6797_VDECSYS) += clk-mt6797-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT6797_VENCSYS) += clk-mt6797-venc.o
 obj-$(CONFIG_COMMON_CLK_MT2701) += clk-mt2701.o
+obj-$(CONFIG_COMMON_CLK_MT2701_AUDSYS) += clk-mt2701-aud.o
 obj-$(CONFIG_COMMON_CLK_MT2701_BDPSYS) += clk-mt2701-bdp.o
 obj-$(CONFIG_COMMON_CLK_MT2701_ETHSYS) += clk-mt2701-eth.o
 obj-$(CONFIG_COMMON_CLK_MT2701_HIFSYS) += clk-mt2701-hif.o
diff --git a/drivers/clk/mediatek/clk-mt2701-aud.c b/drivers/clk/mediatek/clk-mt2701-aud.c
new file mode 100644
index 0000000..d8005b3
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt2701-aud.c
@@ -0,0 +1,175 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ * Author: Ryder Lee <ryder.lee@mediatek.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt2701-clk.h>
+
+#define GATE_AUDIO0(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio0_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO1(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio1_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO2(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio2_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+#define GATE_AUDIO3(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &audio3_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_no_setclr,	\
+	}
+
+static const struct mtk_gate_regs audio0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x0,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs audio1_cg_regs = {
+	.set_ofs = 0x10,
+	.clr_ofs = 0x10,
+	.sta_ofs = 0x10,
+};
+
+static const struct mtk_gate_regs audio2_cg_regs = {
+	.set_ofs = 0x14,
+	.clr_ofs = 0x14,
+	.sta_ofs = 0x14,
+};
+
+static const struct mtk_gate_regs audio3_cg_regs = {
+	.set_ofs = 0x634,
+	.clr_ofs = 0x634,
+	.sta_ofs = 0x634,
+};
+
+static const struct mtk_gate audio_clks[] = {
+	/* AUDIO0 */
+	GATE_AUDIO0(CLK_AUD_AFE, "audio_afe", "aud_intbus_sel", 2),
+	GATE_AUDIO0(CLK_AUD_HDMI, "audio_hdmi", "audpll_sel", 20),
+	GATE_AUDIO0(CLK_AUD_SPDF, "audio_spdf", "audpll_sel", 21),
+	GATE_AUDIO0(CLK_AUD_SPDF2, "audio_spdf2", "audpll_sel", 22),
+	GATE_AUDIO0(CLK_AUD_APLL, "audio_apll", "audpll_sel", 23),
+	/* AUDIO1 */
+	GATE_AUDIO1(CLK_AUD_I2SIN1, "audio_i2sin1", "aud_mux1_sel", 0),
+	GATE_AUDIO1(CLK_AUD_I2SIN2, "audio_i2sin2", "aud_mux1_sel", 1),
+	GATE_AUDIO1(CLK_AUD_I2SIN3, "audio_i2sin3", "aud_mux1_sel", 2),
+	GATE_AUDIO1(CLK_AUD_I2SIN4, "audio_i2sin4", "aud_mux1_sel", 3),
+	GATE_AUDIO1(CLK_AUD_I2SIN5, "audio_i2sin5", "aud_mux1_sel", 4),
+	GATE_AUDIO1(CLK_AUD_I2SIN6, "audio_i2sin6", "aud_mux1_sel", 5),
+	GATE_AUDIO1(CLK_AUD_I2SO1, "audio_i2so1", "aud_mux1_sel", 6),
+	GATE_AUDIO1(CLK_AUD_I2SO2, "audio_i2so2", "aud_mux1_sel", 7),
+	GATE_AUDIO1(CLK_AUD_I2SO3, "audio_i2so3", "aud_mux1_sel", 8),
+	GATE_AUDIO1(CLK_AUD_I2SO4, "audio_i2so4", "aud_mux1_sel", 9),
+	GATE_AUDIO1(CLK_AUD_I2SO5, "audio_i2so5", "aud_mux1_sel", 10),
+	GATE_AUDIO1(CLK_AUD_I2SO6, "audio_i2so6", "aud_mux1_sel", 11),
+	GATE_AUDIO1(CLK_AUD_ASRCI1, "audio_asrci1", "asm_h_sel", 12),
+	GATE_AUDIO1(CLK_AUD_ASRCI2, "audio_asrci2", "asm_h_sel", 13),
+	GATE_AUDIO1(CLK_AUD_ASRCO1, "audio_asrco1", "asm_h_sel", 14),
+	GATE_AUDIO1(CLK_AUD_ASRCO2, "audio_asrco2", "asm_h_sel", 15),
+	GATE_AUDIO1(CLK_AUD_INTDIR, "audio_intdir", "intdir_sel", 20),
+	GATE_AUDIO1(CLK_AUD_A1SYS, "audio_a1sys", "aud_mux1_sel", 21),
+	GATE_AUDIO1(CLK_AUD_A2SYS, "audio_a2sys", "aud_mux2_sel", 22),
+	GATE_AUDIO1(CLK_AUD_AFE_CONN, "audio_afe_conn", "aud_mux1_sel", 23),
+	GATE_AUDIO1(CLK_AUD_AFE_MRGIF, "audio_afe_mrgif", "aud_mux1_sel", 25),
+	/* AUDIO2 */
+	GATE_AUDIO2(CLK_AUD_MMIF_UL1, "audio_ul1", "aud_mux1_sel", 0),
+	GATE_AUDIO2(CLK_AUD_MMIF_UL2, "audio_ul2", "aud_mux1_sel", 1),
+	GATE_AUDIO2(CLK_AUD_MMIF_UL3, "audio_ul3", "aud_mux1_sel", 2),
+	GATE_AUDIO2(CLK_AUD_MMIF_UL4, "audio_ul4", "aud_mux1_sel", 3),
+	GATE_AUDIO2(CLK_AUD_MMIF_UL5, "audio_ul5", "aud_mux1_sel", 4),
+	GATE_AUDIO2(CLK_AUD_MMIF_UL6, "audio_ul6", "aud_mux1_sel", 5),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL1, "audio_dl1", "aud_mux1_sel", 6),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL2, "audio_dl2", "aud_mux1_sel", 7),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL3, "audio_dl3", "aud_mux1_sel", 8),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL4, "audio_dl4", "aud_mux1_sel", 9),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL5, "audio_dl5", "aud_mux1_sel", 10),
+	GATE_AUDIO2(CLK_AUD_MMIF_DL6, "audio_dl6", "aud_mux1_sel", 11),
+	GATE_AUDIO2(CLK_AUD_MMIF_DLMCH, "audio_dlmch", "aud_mux1_sel", 12),
+	GATE_AUDIO2(CLK_AUD_MMIF_ARB1, "audio_arb1", "aud_mux1_sel", 13),
+	GATE_AUDIO2(CLK_AUD_MMIF_AWB1, "audio_awb", "aud_mux1_sel", 14),
+	GATE_AUDIO2(CLK_AUD_MMIF_AWB2, "audio_awb2", "aud_mux1_sel", 15),
+	GATE_AUDIO2(CLK_AUD_MMIF_DAI, "audio_dai", "aud_mux1_sel", 16),
+	/* AUDIO3 */
+	GATE_AUDIO3(CLK_AUD_ASRCI3, "audio_asrci3", "asm_h_sel", 2),
+	GATE_AUDIO3(CLK_AUD_ASRCI4, "audio_asrci4", "asm_h_sel", 3),
+	GATE_AUDIO3(CLK_AUD_ASRCI5, "audio_asrci5", "asm_h_sel", 4),
+	GATE_AUDIO3(CLK_AUD_ASRCI6, "audio_asrci6", "asm_h_sel", 5),
+	GATE_AUDIO3(CLK_AUD_ASRCO3, "audio_asrco3", "asm_h_sel", 6),
+	GATE_AUDIO3(CLK_AUD_ASRCO4, "audio_asrco4", "asm_h_sel", 7),
+	GATE_AUDIO3(CLK_AUD_ASRCO5, "audio_asrco5", "asm_h_sel", 8),
+	GATE_AUDIO3(CLK_AUD_ASRCO6, "audio_asrco6", "asm_h_sel", 9),
+	GATE_AUDIO3(CLK_AUD_MEM_ASRC1, "audio_mem_asrc1", "asm_h_sel", 10),
+	GATE_AUDIO3(CLK_AUD_MEM_ASRC2, "audio_mem_asrc2", "asm_h_sel", 11),
+	GATE_AUDIO3(CLK_AUD_MEM_ASRC3, "audio_mem_asrc3", "asm_h_sel", 12),
+	GATE_AUDIO3(CLK_AUD_MEM_ASRC4, "audio_mem_asrc4", "asm_h_sel", 13),
+	GATE_AUDIO3(CLK_AUD_MEM_ASRC5, "audio_mem_asrc5", "asm_h_sel", 14),
+};
+
+static const struct of_device_id of_match_clk_mt2701_aud[] = {
+	{ .compatible = "mediatek,mt2701-audsys", },
+	{}
+};
+
+static int clk_mt2701_aud_probe(struct platform_device *pdev)
+{
+	struct clk_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+	struct device_node *pnode = pdev->dev.parent->of_node;
+	int r;
+
+	clk_data = mtk_alloc_clk_data(CLK_AUD_NR);
+
+	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
+			       clk_data);
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		dev_err(&pdev->dev,
+			"could not register clock provider: %s: %d\n",
+			pdev->name, r);
+
+	return r;
+}
+
+static struct platform_driver clk_mt2701_aud_drv = {
+	.probe = clk_mt2701_aud_probe,
+	.driver = {
+		.name = "clk-mt2701-aud",
+		.of_match_table = of_match_clk_mt2701_aud,
+	},
+};
+
+builtin_platform_driver(clk_mt2701_aud_drv);
-- 
1.9.1

[PATCH v2 4/5] dt-bindings: clock: mediatek: update audsys documentation to adapt MFD device

[Ryder Lee]

As the MediaTek audio hardware block that expose functionalities that are
handled by separate subsystems in the kernel, and there are registers that
are shared between related drivers.

Switch the current device to an MFD device, add more descriptions about the
subsystem and modify example accordingly.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
 .../bindings/arm/mediatek/mediatek,audsys.txt      | 37 ++++++++++++++++++----
 1 file changed, 30 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
index 9b8f578..677af40 100644
--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
@@ -1,22 +1,45 @@
-MediaTek AUDSYS controller
+MediaTek Audio Subsystem
 ============================
+The audio subsystem is one of the multi-function blocks of MediaTek SoCs.
+It contains a system controller, which provides a number registers giving
+access to two features: AUDSYS clocks and Audio Front End (AFE) components.
 
+For the top level node:
+- compatible: must be: "syscon", "simple-mfd";
+- reg: register area of the Audio Subsystem
+
+Required sub-nodes:
+
+AUDSYS clocks:
+-------
 The MediaTek AUDSYS controller provides various clocks to the system.
 
 Required Properties:
 
 - compatible: Should be one of:
-	- "mediatek,mt7622-audsys", "syscon"
+	- "mediatek,mt2701-audsys";
+	- "mediatek,mt7622-audsys";
 - #clock-cells: Must be 1
 
 The AUDSYS controller uses the common clk binding from
 Documentation/devicetree/bindings/clock/clock-bindings.txt
 The available clocks are defined in dt-bindings/clock/mt*-clk.h.
 
+AFE components:
+-------
+For common binding part and usage, refer to
+../sonud/mt2701-afe-pcm.txt.
+
 Example:
 
-audsys: audsys@11220000 {
-	compatible = "mediatek,mt7622-audsys", "syscon";
-	reg = <0 0x11220000 0 0x1000>;
-	#clock-cells = <1>;
-};
+	audio-subsystem@11220000 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0 0x11220000 0 0x2000>;
+
+		audsys: clock {
+			compatible = "mediatek,mt2701-audsys";
+			#clock-cells = <1>;
+		};
+
+		...
+	};
-- 
1.9.1

[PATCH v2 5/5] arm: dts: mediatek: add audio-subsystem node for both MT2701 and MT7623

[Ryder Lee]

Add audio-subsystem node and its clock support for both MT2701/MT7623.
Then modify afe node to adapt it.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
 arch/arm/boot/dts/mt2701.dtsi | 192 ++++++++++++++++++++---------------------
 arch/arm/boot/dts/mt7623.dtsi | 193 +++++++++++++++++++++---------------------
 2 files changed, 189 insertions(+), 196 deletions(-)

diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
index 965ddfb..4780aa9 100644
--- a/arch/arm/boot/dts/mt2701.dtsi
+++ b/arch/arm/boot/dts/mt2701.dtsi
@@ -426,104 +426,100 @@
 		status = "disabled";
 	};
 
-	afe: audio-controller@11220000 {
-		compatible = "mediatek,mt2701-audio";
-		reg = <0 0x11220000 0 0x2000>,
-		      <0 0x112a0000 0 0x20000>;
-		interrupts =  <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
-			      <GIC_SPI 132 IRQ_TYPE_LEVEL_LOW>;
-		interrupt-names	= "afe", "asys";
-		power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
-
-		clocks = <&infracfg CLK_INFRA_AUDIO>,
-			 <&topckgen CLK_TOP_AUD_MUX1_SEL>,
-			 <&topckgen CLK_TOP_AUD_MUX2_SEL>,
-			 <&topckgen CLK_TOP_AUD_MUX1_DIV>,
-			 <&topckgen CLK_TOP_AUD_MUX2_DIV>,
-			 <&topckgen CLK_TOP_AUD_48K_TIMING>,
-			 <&topckgen CLK_TOP_AUD_44K_TIMING>,
-			 <&topckgen CLK_TOP_AUDPLL_MUX_SEL>,
-			 <&topckgen CLK_TOP_APLL_SEL>,
-			 <&topckgen CLK_TOP_AUD1PLL_98M>,
-			 <&topckgen CLK_TOP_AUD2PLL_90M>,
-			 <&topckgen CLK_TOP_HADDS2PLL_98M>,
-			 <&topckgen CLK_TOP_HADDS2PLL_294M>,
-			 <&topckgen CLK_TOP_AUDPLL>,
-			 <&topckgen CLK_TOP_AUDPLL_D4>,
-			 <&topckgen CLK_TOP_AUDPLL_D8>,
-			 <&topckgen CLK_TOP_AUDPLL_D16>,
-			 <&topckgen CLK_TOP_AUDPLL_D24>,
-			 <&topckgen CLK_TOP_AUDINTBUS_SEL>,
-			 <&clk26m>,
-			 <&topckgen CLK_TOP_SYSPLL1_D4>,
-			 <&topckgen CLK_TOP_AUD_K1_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K2_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K3_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K4_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K5_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K6_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K1_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K2_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K3_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K4_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K5_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K6_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_I2S1_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S2_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S3_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S4_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S5_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S6_MCLK>,
-			 <&topckgen CLK_TOP_ASM_M_SEL>,
-			 <&topckgen CLK_TOP_ASM_H_SEL>,
-			 <&topckgen CLK_TOP_UNIVPLL2_D4>,
-			 <&topckgen CLK_TOP_UNIVPLL2_D2>,
-			 <&topckgen CLK_TOP_SYSPLL_D5>;
-
-		clock-names = "infra_sys_audio_clk",
-			 "top_audio_mux1_sel",
-			 "top_audio_mux2_sel",
-			 "top_audio_mux1_div",
-			 "top_audio_mux2_div",
-			 "top_audio_48k_timing",
-			 "top_audio_44k_timing",
-			 "top_audpll_mux_sel",
-			 "top_apll_sel",
-			 "top_aud1_pll_98M",
-			 "top_aud2_pll_90M",
-			 "top_hadds2_pll_98M",
-			 "top_hadds2_pll_294M",
-			 "top_audpll",
-			 "top_audpll_d4",
-			 "top_audpll_d8",
-			 "top_audpll_d16",
-			 "top_audpll_d24",
-			 "top_audintbus_sel",
-			 "clk_26m",
-			 "top_syspll1_d4",
-			 "top_aud_k1_src_sel",
-			 "top_aud_k2_src_sel",
-			 "top_aud_k3_src_sel",
-			 "top_aud_k4_src_sel",
-			 "top_aud_k5_src_sel",
-			 "top_aud_k6_src_sel",
-			 "top_aud_k1_src_div",
-			 "top_aud_k2_src_div",
-			 "top_aud_k3_src_div",
-			 "top_aud_k4_src_div",
-			 "top_aud_k5_src_div",
-			 "top_aud_k6_src_div",
-			 "top_aud_i2s1_mclk",
-			 "top_aud_i2s2_mclk",
-			 "top_aud_i2s3_mclk",
-			 "top_aud_i2s4_mclk",
-			 "top_aud_i2s5_mclk",
-			 "top_aud_i2s6_mclk",
-			 "top_asm_m_sel",
-			 "top_asm_h_sel",
-			 "top_univpll2_d4",
-			 "top_univpll2_d2",
-			 "top_syspll_d5";
+	audio-subsystem@11220000 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0 0x11220000 0 0x2000>;
+
+		audsys: clock {
+			compatible = "mediatek,mt2701-audsys";
+			#clock-cells = <1>;
+		};
+
+		afe: audio {
+			compatible = "mediatek,mt2701-audio";
+			interrupts =  <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
+				      <GIC_SPI 132 IRQ_TYPE_LEVEL_LOW>;
+			interrupt-names	= "afe", "asys";
+			power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
+
+			clocks = <&infracfg CLK_INFRA_AUDIO>,
+				 <&topckgen CLK_TOP_AUD_MUX1_SEL>,
+				 <&topckgen CLK_TOP_AUD_MUX2_SEL>,
+				 <&topckgen CLK_TOP_AUD_48K_TIMING>,
+				 <&topckgen CLK_TOP_AUD_44K_TIMING>,
+				 <&topckgen CLK_TOP_AUD_K1_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K2_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K3_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K4_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K1_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K2_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K3_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K4_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_I2S1_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S2_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S3_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S4_MCLK>,
+				 <&audsys CLK_AUD_I2SO1>,
+				 <&audsys CLK_AUD_I2SO2>,
+				 <&audsys CLK_AUD_I2SO3>,
+				 <&audsys CLK_AUD_I2SO4>,
+				 <&audsys CLK_AUD_I2SIN1>,
+				 <&audsys CLK_AUD_I2SIN2>,
+				 <&audsys CLK_AUD_I2SIN3>,
+				 <&audsys CLK_AUD_I2SIN4>,
+				 <&audsys CLK_AUD_ASRCO1>,
+				 <&audsys CLK_AUD_ASRCO2>,
+				 <&audsys CLK_AUD_ASRCO3>,
+				 <&audsys CLK_AUD_ASRCO4>,
+				 <&audsys CLK_AUD_AFE>,
+				 <&audsys CLK_AUD_AFE_CONN>,
+				 <&audsys CLK_AUD_A1SYS>,
+				 <&audsys CLK_AUD_A2SYS>,
+				 <&audsys CLK_AUD_AFE_MRGIF>;
+
+			clock-names = "infra_sys_audio_clk",
+				      "top_audio_mux1_sel",
+				      "top_audio_mux2_sel",
+				      "top_audio_a1sys_hp",
+				      "top_audio_a2sys_hp",
+				      "i2s0_src_sel",
+				      "i2s1_src_sel",
+				      "i2s2_src_sel",
+				      "i2s3_src_sel",
+				      "i2s0_src_div",
+				      "i2s1_src_div",
+				      "i2s2_src_div",
+				      "i2s3_src_div",
+				      "i2s0_mclk_en",
+				      "i2s1_mclk_en",
+				      "i2s2_mclk_en",
+				      "i2s3_mclk_en",
+				      "i2so0_hop_ck",
+				      "i2so1_hop_ck",
+				      "i2so2_hop_ck",
+				      "i2so3_hop_ck",
+				      "i2si0_hop_ck",
+				      "i2si1_hop_ck",
+				      "i2si2_hop_ck",
+				      "i2si3_hop_ck",
+				      "asrc0_out_ck",
+				      "asrc1_out_ck",
+				      "asrc2_out_ck",
+				      "asrc3_out_ck",
+				      "audio_afe_pd",
+				      "audio_afe_conn_pd",
+				      "audio_a1sys_pd",
+				      "audio_a2sys_pd",
+				      "audio_mrgif_pd";
+
+			assigned-clocks = <&topckgen CLK_TOP_AUD_MUX1_SEL>,
+					  <&topckgen CLK_TOP_AUD_MUX2_SEL>,
+					  <&topckgen CLK_TOP_AUD_MUX1_DIV>,
+					  <&topckgen CLK_TOP_AUD_MUX2_DIV>;
+			assigned-clock-parents = <&topckgen CLK_TOP_AUD1PLL_98M>,
+						 <&topckgen CLK_TOP_AUD2PLL_90M>;
+			assigned-clock-rates = <0>, <0>, <49152000>, <45158400>;
+		};
 	};
 
 	mmsys: syscon@14000000 {
diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
index 0640fb7..536c73e 100644
--- a/arch/arm/boot/dts/mt7623.dtsi
+++ b/arch/arm/boot/dts/mt7623.dtsi
@@ -538,105 +538,102 @@
 		status = "disabled";
 	};
 
-	afe: audio-controller@11220000 {
-		compatible = "mediatek,mt7623-audio",
-			     "mediatek,mt2701-audio";
-		reg = <0 0x11220000 0 0x2000>,
-		      <0 0x112a0000 0 0x20000>;
-		interrupts =  <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
-			      <GIC_SPI 132 IRQ_TYPE_LEVEL_LOW>;
-		interrupt-names	= "afe", "asys";
-		power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
+	audio-subsystem@11220000 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0 0x11220000 0 0x2000>;
+
+		audsys: clock {
+			compatible = "mediatek,mt7623-audsys",
+				     "mediatek,mt2701-audsys";
+			#clock-cells = <1>;
+		};
 
-		clocks = <&infracfg CLK_INFRA_AUDIO>,
-			 <&topckgen CLK_TOP_AUD_MUX1_SEL>,
-			 <&topckgen CLK_TOP_AUD_MUX2_SEL>,
-			 <&topckgen CLK_TOP_AUD_MUX1_DIV>,
-			 <&topckgen CLK_TOP_AUD_MUX2_DIV>,
-			 <&topckgen CLK_TOP_AUD_48K_TIMING>,
-			 <&topckgen CLK_TOP_AUD_44K_TIMING>,
-			 <&topckgen CLK_TOP_AUDPLL_MUX_SEL>,
-			 <&topckgen CLK_TOP_APLL_SEL>,
-			 <&topckgen CLK_TOP_AUD1PLL_98M>,
-			 <&topckgen CLK_TOP_AUD2PLL_90M>,
-			 <&topckgen CLK_TOP_HADDS2PLL_98M>,
-			 <&topckgen CLK_TOP_HADDS2PLL_294M>,
-			 <&topckgen CLK_TOP_AUDPLL>,
-			 <&topckgen CLK_TOP_AUDPLL_D4>,
-			 <&topckgen CLK_TOP_AUDPLL_D8>,
-			 <&topckgen CLK_TOP_AUDPLL_D16>,
-			 <&topckgen CLK_TOP_AUDPLL_D24>,
-			 <&topckgen CLK_TOP_AUDINTBUS_SEL>,
-			 <&clk26m>,
-			 <&topckgen CLK_TOP_SYSPLL1_D4>,
-			 <&topckgen CLK_TOP_AUD_K1_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K2_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K3_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K4_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K5_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K6_SRC_SEL>,
-			 <&topckgen CLK_TOP_AUD_K1_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K2_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K3_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K4_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K5_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_K6_SRC_DIV>,
-			 <&topckgen CLK_TOP_AUD_I2S1_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S2_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S3_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S4_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S5_MCLK>,
-			 <&topckgen CLK_TOP_AUD_I2S6_MCLK>,
-			 <&topckgen CLK_TOP_ASM_M_SEL>,
-			 <&topckgen CLK_TOP_ASM_H_SEL>,
-			 <&topckgen CLK_TOP_UNIVPLL2_D4>,
-			 <&topckgen CLK_TOP_UNIVPLL2_D2>,
-			 <&topckgen CLK_TOP_SYSPLL_D5>;
-
-		clock-names = "infra_sys_audio_clk",
-			 "top_audio_mux1_sel",
-			 "top_audio_mux2_sel",
-			 "top_audio_mux1_div",
-			 "top_audio_mux2_div",
-			 "top_audio_48k_timing",
-			 "top_audio_44k_timing",
-			 "top_audpll_mux_sel",
-			 "top_apll_sel",
-			 "top_aud1_pll_98M",
-			 "top_aud2_pll_90M",
-			 "top_hadds2_pll_98M",
-			 "top_hadds2_pll_294M",
-			 "top_audpll",
-			 "top_audpll_d4",
-			 "top_audpll_d8",
-			 "top_audpll_d16",
-			 "top_audpll_d24",
-			 "top_audintbus_sel",
-			 "clk_26m",
-			 "top_syspll1_d4",
-			 "top_aud_k1_src_sel",
-			 "top_aud_k2_src_sel",
-			 "top_aud_k3_src_sel",
-			 "top_aud_k4_src_sel",
-			 "top_aud_k5_src_sel",
-			 "top_aud_k6_src_sel",
-			 "top_aud_k1_src_div",
-			 "top_aud_k2_src_div",
-			 "top_aud_k3_src_div",
-			 "top_aud_k4_src_div",
-			 "top_aud_k5_src_div",
-			 "top_aud_k6_src_div",
-			 "top_aud_i2s1_mclk",
-			 "top_aud_i2s2_mclk",
-			 "top_aud_i2s3_mclk",
-			 "top_aud_i2s4_mclk",
-			 "top_aud_i2s5_mclk",
-			 "top_aud_i2s6_mclk",
-			 "top_asm_m_sel",
-			 "top_asm_h_sel",
-			 "top_univpll2_d4",
-			 "top_univpll2_d2",
-			 "top_syspll_d5";
+		afe: audio {
+			compatible = "mediatek,mt7623-audio",
+				     "mediatek,mt2701-audio";
+			interrupts =  <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
+				      <GIC_SPI 132 IRQ_TYPE_LEVEL_LOW>;
+			interrupt-names	= "afe", "asys";
+			power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
+
+			clocks = <&infracfg CLK_INFRA_AUDIO>,
+				 <&topckgen CLK_TOP_AUD_MUX1_SEL>,
+				 <&topckgen CLK_TOP_AUD_MUX2_SEL>,
+				 <&topckgen CLK_TOP_AUD_48K_TIMING>,
+				 <&topckgen CLK_TOP_AUD_44K_TIMING>,
+				 <&topckgen CLK_TOP_AUD_K1_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K2_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K3_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K4_SRC_SEL>,
+				 <&topckgen CLK_TOP_AUD_K1_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K2_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K3_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_K4_SRC_DIV>,
+				 <&topckgen CLK_TOP_AUD_I2S1_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S2_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S3_MCLK>,
+				 <&topckgen CLK_TOP_AUD_I2S4_MCLK>,
+				 <&audsys CLK_AUD_I2SO1>,
+				 <&audsys CLK_AUD_I2SO2>,
+				 <&audsys CLK_AUD_I2SO3>,
+				 <&audsys CLK_AUD_I2SO4>,
+				 <&audsys CLK_AUD_I2SIN1>,
+				 <&audsys CLK_AUD_I2SIN2>,
+				 <&audsys CLK_AUD_I2SIN3>,
+				 <&audsys CLK_AUD_I2SIN4>,
+				 <&audsys CLK_AUD_ASRCO1>,
+				 <&audsys CLK_AUD_ASRCO2>,
+				 <&audsys CLK_AUD_ASRCO3>,
+				 <&audsys CLK_AUD_ASRCO4>,
+				 <&audsys CLK_AUD_AFE>,
+				 <&audsys CLK_AUD_AFE_CONN>,
+				 <&audsys CLK_AUD_A1SYS>,
+				 <&audsys CLK_AUD_A2SYS>,
+				 <&audsys CLK_AUD_AFE_MRGIF>;
+
+			clock-names = "infra_sys_audio_clk",
+				      "top_audio_mux1_sel",
+				      "top_audio_mux2_sel",
+				      "top_audio_a1sys_hp",
+				      "top_audio_a2sys_hp",
+				      "i2s0_src_sel",
+				      "i2s1_src_sel",
+				      "i2s2_src_sel",
+				      "i2s3_src_sel",
+				      "i2s0_src_div",
+				      "i2s1_src_div",
+				      "i2s2_src_div",
+				      "i2s3_src_div",
+				      "i2s0_mclk_en",
+				      "i2s1_mclk_en",
+				      "i2s2_mclk_en",
+				      "i2s3_mclk_en",
+				      "i2so0_hop_ck",
+				      "i2so1_hop_ck",
+				      "i2so2_hop_ck",
+				      "i2so3_hop_ck",
+				      "i2si0_hop_ck",
+				      "i2si1_hop_ck",
+				      "i2si2_hop_ck",
+				      "i2si3_hop_ck",
+				      "asrc0_out_ck",
+				      "asrc1_out_ck",
+				      "asrc2_out_ck",
+				      "asrc3_out_ck",
+				      "audio_afe_pd",
+				      "audio_afe_conn_pd",
+				      "audio_a1sys_pd",
+				      "audio_a2sys_pd",
+				      "audio_mrgif_pd";
+
+			assigned-clocks = <&topckgen CLK_TOP_AUD_MUX1_SEL>,
+					  <&topckgen CLK_TOP_AUD_MUX2_SEL>,
+					  <&topckgen CLK_TOP_AUD_MUX1_DIV>,
+					  <&topckgen CLK_TOP_AUD_MUX2_DIV>;
+			assigned-clock-parents = <&topckgen CLK_TOP_AUD1PLL_98M>,
+						 <&topckgen CLK_TOP_AUD2PLL_90M>;
+			assigned-clock-rates = <0>, <0>, <49152000>, <45158400>;
+		};
 	};
 
 	mmc0: mmc@11230000 {
-- 
1.9.1

Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Matthias Brugger]

On 01/31/2018 08:42 AM, Ryder Lee wrote:
> As the new MFD parent is in place, switch probing method to adapt it.
> 
> Signed-off-by: Ryder Lee <ryder.lee-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> ---
>  drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
> index 13f752d..8c18536 100644
> --- a/drivers/clk/mediatek/clk-mt7622-aud.c
> +++ b/drivers/clk/mediatek/clk-mt7622-aud.c
> @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
>  {
>  	struct clk_onecell_data *clk_data;
>  	struct device_node *node = pdev->dev.of_node;
> +	struct device_node *pnode = pdev->dev.parent->of_node;
>  	int r;
>  
>  	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
>  
> -	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
> +	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),

We will need a fallback here for older device tree bindings.

Regards,
Matthias

>  			       clk_data);
>  
>  	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> 
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Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Ryder Lee]

On Sat, 2018-02-03 at 15:26 +0100, Matthias Brugger wrote:
> 
> On 01/31/2018 08:42 AM, Ryder Lee wrote:
> > As the new MFD parent is in place, switch probing method to adapt it.
> > 
> > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> > ---
> >  drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
> > index 13f752d..8c18536 100644
> > --- a/drivers/clk/mediatek/clk-mt7622-aud.c
> > +++ b/drivers/clk/mediatek/clk-mt7622-aud.c
> > @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
> >  {
> >  	struct clk_onecell_data *clk_data;
> >  	struct device_node *node = pdev->dev.of_node;
> > +	struct device_node *pnode = pdev->dev.parent->of_node;
> >  	int r;
> >  
> >  	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
> >  
> > -	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
> > +	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
> 
> We will need a fallback here for older device tree bindings.
> 
> Regards,
> Matthias

Up to now, I didn't see both driver and bindings are used anywhere.
Should I still care about that?

Thanks.

Re: [PATCH v2 1/5] clk: mediatek: update missing clock data for MT7622 audsys

[Rob Herring]

On Wed, Jan 31, 2018 at 03:42:41PM +0800, Ryder Lee wrote:
> Add missing clock data 'CLK_AUDIO_AFE_CONN' for MT7622 audsys.
> 
> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> ---
>  drivers/clk/mediatek/clk-mt7622-aud.c  | 1 +
>  include/dt-bindings/clock/mt7622-clk.h | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)

Reviewed-by: Rob Herring <robh@kernel.org>

Re: [PATCH v2 4/5] dt-bindings: clock: mediatek: update audsys documentation to adapt MFD device

[Rob Herring]

On Wed, Jan 31, 2018 at 03:42:44PM +0800, Ryder Lee wrote:
> As the MediaTek audio hardware block that expose functionalities that are
> handled by separate subsystems in the kernel, and there are registers that
> are shared between related drivers.
> 
> Switch the current device to an MFD device, add more descriptions about the
> subsystem and modify example accordingly.
> 
> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> ---
>  .../bindings/arm/mediatek/mediatek,audsys.txt      | 37 ++++++++++++++++++----
>  1 file changed, 30 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> index 9b8f578..677af40 100644
> --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> @@ -1,22 +1,45 @@
> -MediaTek AUDSYS controller
> +MediaTek Audio Subsystem
>  ============================
> +The audio subsystem is one of the multi-function blocks of MediaTek SoCs.
> +It contains a system controller, which provides a number registers giving
> +access to two features: AUDSYS clocks and Audio Front End (AFE) components.
>  
> +For the top level node:
> +- compatible: must be: "syscon", "simple-mfd";

This should have some SoC specific compatible.

> +- reg: register area of the Audio Subsystem
> +
> +Required sub-nodes:
> +
> +AUDSYS clocks:
> +-------
>  The MediaTek AUDSYS controller provides various clocks to the system.
>  
>  Required Properties:
>  
>  - compatible: Should be one of:
> -	- "mediatek,mt7622-audsys", "syscon"
> +	- "mediatek,mt2701-audsys";
> +	- "mediatek,mt7622-audsys";
>  - #clock-cells: Must be 1
>  
>  The AUDSYS controller uses the common clk binding from
>  Documentation/devicetree/bindings/clock/clock-bindings.txt
>  The available clocks are defined in dt-bindings/clock/mt*-clk.h.

There's no register range associated with the clocks? If there is, add a 
reg property.

>  
> +AFE components:
> +-------
> +For common binding part and usage, refer to
> +../sonud/mt2701-afe-pcm.txt.
> +
>  Example:
>  
> -audsys: audsys@11220000 {
> -	compatible = "mediatek,mt7622-audsys", "syscon";
> -	reg = <0 0x11220000 0 0x1000>;
> -	#clock-cells = <1>;
> -};
> +	audio-subsystem@11220000 {
> +		compatible = "syscon", "simple-mfd";
> +		reg = <0 0x11220000 0 0x2000>;
> +
> +		audsys: clock {
> +			compatible = "mediatek,mt2701-audsys";
> +			#clock-cells = <1>;
> +		};
> +
> +		...
> +	};
> -- 
> 1.9.1
> 

Re: [PATCH v2 4/5] dt-bindings: clock: mediatek: update audsys documentation to adapt MFD device

[Ryder Lee]

On Mon, 2018-02-05 at 00:08 -0600, Rob Herring wrote:
> On Wed, Jan 31, 2018 at 03:42:44PM +0800, Ryder Lee wrote:
> > As the MediaTek audio hardware block that expose functionalities that are
> > handled by separate subsystems in the kernel, and there are registers that
> > are shared between related drivers.
> > 
> > Switch the current device to an MFD device, add more descriptions about the
> > subsystem and modify example accordingly.
> > 
> > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> > ---
> >  .../bindings/arm/mediatek/mediatek,audsys.txt      | 37 ++++++++++++++++++----
> >  1 file changed, 30 insertions(+), 7 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> > index 9b8f578..677af40 100644
> > --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> > @@ -1,22 +1,45 @@
> > -MediaTek AUDSYS controller
> > +MediaTek Audio Subsystem
> >  ============================
> > +The audio subsystem is one of the multi-function blocks of MediaTek SoCs.
> > +It contains a system controller, which provides a number registers giving
> > +access to two features: AUDSYS clocks and Audio Front End (AFE) components.
> >  
> > +For the top level node:
> > +- compatible: must be: "syscon", "simple-mfd";
> 
> This should have some SoC specific compatible.

As we don't have a specific driver (compatible string) for it and if we
need to add that I think the term '*-audsys' is very suitable here, but
unfortunately, it has already picked for clock driver (see child node).

I also took ../../marvell/*-system-controller.txt as examples for my
case. Thus, I'm not sure should we still need a new one here?

> > +- reg: register area of the Audio Subsystem
> > +
> > +Required sub-nodes:
> > +
> > +AUDSYS clocks:
> > +-------
> >  The MediaTek AUDSYS controller provides various clocks to the system.
> >  
> >  Required Properties:
> >  
> >  - compatible: Should be one of:
> > -	- "mediatek,mt7622-audsys", "syscon"
> > +	- "mediatek,mt2701-audsys";
> > +	- "mediatek,mt7622-audsys";
> >  - #clock-cells: Must be 1
> >  
> >  The AUDSYS controller uses the common clk binding from
> >  Documentation/devicetree/bindings/clock/clock-bindings.txt
> >  The available clocks are defined in dt-bindings/clock/mt*-clk.h.
> 
> There's no register range associated with the clocks? If there is, add a 
> reg property.

No, we don't need reg property here, as the two sub-drivers will obtain
the regmap  which is propagated from the parent.

Thanks

> >  
> > +AFE components:
> > +-------
> > +For common binding part and usage, refer to
> > +../sonud/mt2701-afe-pcm.txt.
> > +
> >  Example:
> >  
> > -audsys: audsys@11220000 {
> > -	compatible = "mediatek,mt7622-audsys", "syscon";
> > -	reg = <0 0x11220000 0 0x1000>;
> > -	#clock-cells = <1>;
> > -};
> > +	audio-subsystem@11220000 {
> > +		compatible = "syscon", "simple-mfd";
> > +		reg = <0 0x11220000 0 0x2000>;
> > +
> > +		audsys: clock {
> > +			compatible = "mediatek,mt2701-audsys";
> > +			#clock-cells = <1>;
> > +		};
> > +
> > +		...
> > +	};
> > -- 
> > 1.9.1
> > 
> 
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek

Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Matthias Brugger]

On 02/05/2018 05:07 AM, Ryder Lee wrote:
> On Sat, 2018-02-03 at 15:26 +0100, Matthias Brugger wrote:
>>
>> On 01/31/2018 08:42 AM, Ryder Lee wrote:
>>> As the new MFD parent is in place, switch probing method to adapt it.
>>>
>>> Signed-off-by: Ryder Lee <ryder.lee-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
>>> ---
>>>  drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
>>> index 13f752d..8c18536 100644
>>> --- a/drivers/clk/mediatek/clk-mt7622-aud.c
>>> +++ b/drivers/clk/mediatek/clk-mt7622-aud.c
>>> @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
>>>  {
>>>  	struct clk_onecell_data *clk_data;
>>>  	struct device_node *node = pdev->dev.of_node;
>>> +	struct device_node *pnode = pdev->dev.parent->of_node;
>>>  	int r;
>>>  
>>>  	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
>>>  
>>> -	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
>>> +	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
>>
>> We will need a fallback here for older device tree bindings.
>>
>> Regards,
>> Matthias
> 
> Up to now, I didn't see both driver and bindings are used anywhere.
> Should I still care about that?
> 

Yes please, we have to ensure that newer kernel work with older bindings and
vice-versa.

Thanks,
Matthias
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Re: [PATCH v2 4/5] dt-bindings: clock: mediatek: update audsys documentation to adapt MFD device

[Rob Herring]

On Mon, Feb 5, 2018 at 3:11 AM, Ryder Lee <ryder.lee@mediatek.com> wrote:
> On Mon, 2018-02-05 at 00:08 -0600, Rob Herring wrote:
>> On Wed, Jan 31, 2018 at 03:42:44PM +0800, Ryder Lee wrote:
>> > As the MediaTek audio hardware block that expose functionalities that are
>> > handled by separate subsystems in the kernel, and there are registers that
>> > are shared between related drivers.
>> >
>> > Switch the current device to an MFD device, add more descriptions about the
>> > subsystem and modify example accordingly.
>> >
>> > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
>> > ---
>> >  .../bindings/arm/mediatek/mediatek,audsys.txt      | 37 ++++++++++++++++++----
>> >  1 file changed, 30 insertions(+), 7 deletions(-)
>> >
>> > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
>> > index 9b8f578..677af40 100644
>> > --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
>> > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
>> > @@ -1,22 +1,45 @@
>> > -MediaTek AUDSYS controller
>> > +MediaTek Audio Subsystem
>> >  ============================
>> > +The audio subsystem is one of the multi-function blocks of MediaTek SoCs.
>> > +It contains a system controller, which provides a number registers giving
>> > +access to two features: AUDSYS clocks and Audio Front End (AFE) components.
>> >
>> > +For the top level node:
>> > +- compatible: must be: "syscon", "simple-mfd";
>>
>> This should have some SoC specific compatible.
>
> As we don't have a specific driver (compatible string) for it and if we
> need to add that I think the term '*-audsys' is very suitable here, but
> unfortunately, it has already picked for clock driver (see child node).

Perhaps the clocks block should have "-clk" on the end or something.

Why do you really need to change this in the first place? You don't
have to have DT child nodes to create child (struct) devices and child
drivers.

>
> I also took ../../marvell/*-system-controller.txt as examples for my
> case. Thus, I'm not sure should we still need a new one here?
>
>> > +- reg: register area of the Audio Subsystem
>> > +
>> > +Required sub-nodes:
>> > +
>> > +AUDSYS clocks:
>> > +-------
>> >  The MediaTek AUDSYS controller provides various clocks to the system.
>> >
>> >  Required Properties:
>> >
>> >  - compatible: Should be one of:
>> > -   - "mediatek,mt7622-audsys", "syscon"
>> > +   - "mediatek,mt2701-audsys";
>> > +   - "mediatek,mt7622-audsys";
>> >  - #clock-cells: Must be 1
>> >
>> >  The AUDSYS controller uses the common clk binding from
>> >  Documentation/devicetree/bindings/clock/clock-bindings.txt
>> >  The available clocks are defined in dt-bindings/clock/mt*-clk.h.
>>
>> There's no register range associated with the clocks? If there is, add a
>> reg property.
>
> No, we don't need reg property here, as the two sub-drivers will obtain
> the regmap  which is propagated from the parent.

I know regmap doesn't need it. That's not what I asked. If you have a
range of registers for the clocks, then define that in reg. Only if
the clock control bits are mixed up with other functions within the
same registers, then you can omit it.

Rob

Re: [PATCH v2 4/5] dt-bindings: clock: mediatek: update audsys documentation to adapt MFD device

[Ryder Lee]

On Wed, 2018-02-07 at 18:49 -0600, Rob Herring wrote:
> >> > diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> >> > index 9b8f578..677af40 100644
> >> > --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> >> > +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt
> >> > @@ -1,22 +1,45 @@
> >> > -MediaTek AUDSYS controller
> >> > +MediaTek Audio Subsystem
> >> >  ============================
> >> > +The audio subsystem is one of the multi-function blocks of MediaTek SoCs.
> >> > +It contains a system controller, which provides a number registers giving
> >> > +access to two features: AUDSYS clocks and Audio Front End (AFE) components.
> >> >
> >> > +For the top level node:
> >> > +- compatible: must be: "syscon", "simple-mfd";
> >>
> >> This should have some SoC specific compatible.
> >
> > As we don't have a specific driver (compatible string) for it and if we
> > need to add that I think the term '*-audsys' is very suitable here, but
> > unfortunately, it has already picked for clock driver (see child node).
> 
> Perhaps the clocks block should have "-clk" on the end or something.
> 
> Why do you really need to change this in the first place? You don't
> have to have DT child nodes to create child (struct) devices and child
> drivers.
> 

I'm not sure I get your point. Did you mean that we could have a parent
(which represents clock and its compatible is something like
"*-audsys","syscon","simple-mfd") with a subnode for audio function?

If so, there's no special reason. I just think it more specifically to
let people know we have an MFD (top node) and it has two sub-functions
(children) share the same region.

> >> > +Required sub-nodes:
> >> > +
> >> > +AUDSYS clocks:
> >> > +-------
> >> >  The MediaTek AUDSYS controller provides various clocks to the system.
> >> >
> >> >  Required Properties:
> >> >
> >> >  - compatible: Should be one of:
> >> > -   - "mediatek,mt7622-audsys", "syscon"
> >> > +   - "mediatek,mt2701-audsys";
> >> > +   - "mediatek,mt7622-audsys";
> >> >  - #clock-cells: Must be 1
> >> >
> >> >  The AUDSYS controller uses the common clk binding from
> >> >  Documentation/devicetree/bindings/clock/clock-bindings.txt
> >> >  The available clocks are defined in dt-bindings/clock/mt*-clk.h.
> >>
> >> There's no register range associated with the clocks? If there is, add a
> >> reg property.
> >
> > No, we don't need reg property here, as the two sub-drivers will obtain
> > the regmap  which is propagated from the parent.
> 
> I know regmap doesn't need it. That's not what I asked. If you have a
> range of registers for the clocks, then define that in reg. Only if
> the clock control bits are mixed up with other functions within the
> same registers, then you can omit it.
> 

Oh okay, I didn't read the mail well.  We have four or five registers
for the clocks, but one of them (offset:0x634) is mixed up with the
audio function (bit 17-19), so I omit it.

Ryder.

Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Ryder Lee]

On Wed, 2018-02-07 at 16:18 +0100, Matthias Brugger wrote:
> 
> On 02/05/2018 05:07 AM, Ryder Lee wrote:
> > On Sat, 2018-02-03 at 15:26 +0100, Matthias Brugger wrote:
> >>
> >> On 01/31/2018 08:42 AM, Ryder Lee wrote:
> >>> As the new MFD parent is in place, switch probing method to adapt it.
> >>>
> >>> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
> >>> ---
> >>>  drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
> >>>  1 file changed, 2 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
> >>> index 13f752d..8c18536 100644
> >>> --- a/drivers/clk/mediatek/clk-mt7622-aud.c
> >>> +++ b/drivers/clk/mediatek/clk-mt7622-aud.c
> >>> @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
> >>>  {
> >>>  	struct clk_onecell_data *clk_data;
> >>>  	struct device_node *node = pdev->dev.of_node;
> >>> +	struct device_node *pnode = pdev->dev.parent->of_node;
> >>>  	int r;
> >>>  
> >>>  	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
> >>>  
> >>> -	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
> >>> +	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
> >>
> >> We will need a fallback here for older device tree bindings.
> >>
> >> Regards,
> >> Matthias
> > 
> > Up to now, I didn't see both driver and bindings are used anywhere.
> > Should I still care about that?
> > 
> 
> Yes please, we have to ensure that newer kernel work with older bindings and
> vice-versa.

OKay. An unrelated question - is it possible to change the compatible
string (*-audsys-clk) without breaking backward compatible?

Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device

[Matthias Brugger]

On 02/08/2018 06:57 AM, Ryder Lee wrote:
> On Wed, 2018-02-07 at 16:18 +0100, Matthias Brugger wrote:
>>
>> On 02/05/2018 05:07 AM, Ryder Lee wrote:
>>> On Sat, 2018-02-03 at 15:26 +0100, Matthias Brugger wrote:
>>>>
>>>> On 01/31/2018 08:42 AM, Ryder Lee wrote:
>>>>> As the new MFD parent is in place, switch probing method to adapt it.
>>>>>
>>>>> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
>>>>> ---
>>>>>  drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++-
>>>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c
>>>>> index 13f752d..8c18536 100644
>>>>> --- a/drivers/clk/mediatek/clk-mt7622-aud.c
>>>>> +++ b/drivers/clk/mediatek/clk-mt7622-aud.c
>>>>> @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
>>>>>  {
>>>>>  	struct clk_onecell_data *clk_data;
>>>>>  	struct device_node *node = pdev->dev.of_node;
>>>>> +	struct device_node *pnode = pdev->dev.parent->of_node;
>>>>>  	int r;
>>>>>  
>>>>>  	clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
>>>>>  
>>>>> -	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
>>>>> +	mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks),
>>>>
>>>> We will need a fallback here for older device tree bindings.
>>>>
>>>> Regards,
>>>> Matthias
>>>
>>> Up to now, I didn't see both driver and bindings are used anywhere.
>>> Should I still care about that?
>>>
>>
>> Yes please, we have to ensure that newer kernel work with older bindings and
>> vice-versa.
> 
> OKay. An unrelated question - is it possible to change the compatible
> string (*-audsys-clk) without breaking backward compatible?
> 

You can't change the compatible string, but you can add a new one, if the DT
maintainer are ok with that. Beware that you won't be able to re-use the old one
in a different driver.

Regards,
Matthias