From: "A.s. Dong" <aisheng.dong@nxp.com> To: "linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org> Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "sboyd@kernel.org" <sboyd@kernel.org>, "mturquette@baylibre.com" <mturquette@baylibre.com>, "shawnguo@kernel.org" <shawnguo@kernel.org>, Anson Huang <anson.huang@nxp.com>, Jacky Bai <ping.bai@nxp.com>, dl-linux-imx <linux-imx@nxp.com>, "A.s. Dong" <aisheng.dong@nxp.com>, Stephen Boyd <sboyd@codeaurora.org> Subject: [PATCH V6 9/9] clk: imx: add imx7ulp clk driver Date: Wed, 14 Nov 2018 13:02:08 +0000 [thread overview] Message-ID: <1542200198-3017-10-git-send-email-aisheng.dong@nxp.com> (raw) In-Reply-To: <1542200198-3017-1-git-send-email-aisheng.dong@nxp.com> i.MX7ULP Clock functions are under joint control of the System Clock Generation (SCG) modules, Peripheral Clock Control (PCC) modules, and Core Mode Controller (CMC)1 blocks The clocking scheme provides clear separation between M4 domain and A7 domain. Except for a few clock sources shared between two domains, such as the System Oscillator clock, the Slow IRC (SIRC), and and the Fast IRC clock (FIRCLK), clock sources and clock management are separated and contained within each domain. M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules. A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules. This driver only adds clock support in A7 domain. Note that most clocks required to be operated when gated, e.g. pll, pfd, pcc. And more special cases that scs/ddr/nic mux selecting different clock source requires that clock to be enabled first, then we need set CLK_OPS_PARENT_ENABLE flag for them properly. Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Anson Huang <Anson.Huang@nxp.com> Cc: Bai Ping <ping.bai@nxp.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: v5->v6: * sosc/firc/dpll/ddr clock should use divider table as they're not 1:1 v4->v5: * clk-composite API name changed accordingly v3->v4: * update after changing scg and pcc into separete nodes according to Rob's suggestion v2->v3: * no changes v1->v2: * use of_clk_add_hw_provider instead * split the clocks register process into two parts: early part for possible timers clocks registered by CLK_OF_DECLARE_DRIVER and the later part for the left normal peripheral clocks registered by a platform driver. --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-imx7ulp.c | 220 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 221 insertions(+) create mode 100644 drivers/clk/imx/clk-imx7ulp.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index a5cab3e..615b413 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -30,4 +30,5 @@ obj-$(CONFIG_SOC_IMX6SLL) += clk-imx6sll.o obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o obj-$(CONFIG_SOC_IMX7D) += clk-imx7d.o +obj-$(CONFIG_SOC_IMX7ULP) += clk-imx7ulp.o obj-$(CONFIG_SOC_VF610) += clk-vf610.o diff --git a/drivers/clk/imx/clk-imx7ulp.c b/drivers/clk/imx/clk-imx7ulp.c new file mode 100644 index 0000000..3b7507f --- /dev/null +++ b/drivers/clk/imx/clk-imx7ulp.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Author: Dong Aisheng <aisheng.dong@nxp.com> + * + */ + +#include <dt-bindings/clock/imx7ulp-clock.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include "clk.h" + +static const char * const pll_pre_sels[] = { "sosc", "firc", }; +static const char * const spll_pfd_sels[] = { "spll_pfd0", "spll_pfd1", "spll_pfd2", "spll_pfd3", }; +static const char * const spll_sels[] = { "spll", "spll_pfd_sel", }; +static const char * const apll_pfd_sels[] = { "apll_pfd0", "apll_pfd1", "apll_pfd2", "apll_pfd3", }; +static const char * const apll_sels[] = { "apll", "apll_pfd_sel", }; +static const char * const scs_sels[] = { "dummy", "sosc", "sirc", "firc", "dummy", "apll_sel", "spll_sel", "upll", }; +static const char * const ddr_sels[] = { "apll_pfd_sel", "upll", }; +static const char * const nic_sels[] = { "firc", "ddr_clk", }; +static const char * const periph_plat_sels[] = { "dummy", "nic1_bus_clk", "nic1_clk", "ddr_clk", "apll_pfd2", "apll_pfd1", "apll_pfd0", "upll", }; +static const char * const periph_bus_sels[] = { "dummy", "sosc_bus_clk", "mpll", "firc_bus_clk", "rosc", "nic1_bus_clk", "nic1_clk", "spll_bus_clk", }; + +/* used by sosc/sirc/firc/ddr/spll/apll dividers */ +static const struct clk_div_table ulp_div_table[] = { + { .val = 1, .div = 1, }, + { .val = 2, .div = 2, }, + { .val = 3, .div = 4, }, + { .val = 4, .div = 8, }, + { .val = 5, .div = 16, }, + { .val = 6, .div = 32, }, + { .val = 7, .div = 64, }, +}; + +static void __init imx7ulp_clk_scg1_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_SCG1_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_SCG1_END; + clks = clk_data->hws; + + clks[IMX7ULP_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0); + + clks[IMX7ULP_CLK_ROSC] = imx_obtain_fixed_clk_hw(np, "rosc"); + clks[IMX7ULP_CLK_SOSC] = imx_obtain_fixed_clk_hw(np, "sosc"); + clks[IMX7ULP_CLK_SIRC] = imx_obtain_fixed_clk_hw(np, "sirc"); + clks[IMX7ULP_CLK_FIRC] = imx_obtain_fixed_clk_hw(np, "firc"); + clks[IMX7ULP_CLK_MIPI_PLL] = imx_obtain_fixed_clk_hw(np, "mpll"); + clks[IMX7ULP_CLK_UPLL] = imx_obtain_fixed_clk_hw(np, "upll"); + + /* SCG1 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + /* NOTE: xPLL config can't be changed when xPLL is enabled */ + clks[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_hw_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_SEL] = imx_clk_hw_mux_flags("spll_pre_sel", base + 0x608, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + + /* name parent_name reg shift width flags */ + clks[IMX7ULP_CLK_APLL_PRE_DIV] = imx_clk_hw_divider_flags("apll_pre_div", "apll_pre_sel", base + 0x508, 8, 3, CLK_SET_RATE_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_DIV] = imx_clk_hw_divider_flags("spll_pre_div", "spll_pre_sel", base + 0x608, 8, 3, CLK_SET_RATE_GATE); + + /* name parent_name base */ + clks[IMX7ULP_CLK_APLL] = imx_clk_pllv4("apll", "apll_pre_div", base + 0x500); + clks[IMX7ULP_CLK_SPLL] = imx_clk_pllv4("spll", "spll_pre_div", base + 0x600); + + /* APLL PFDs */ + clks[IMX7ULP_CLK_APLL_PFD0] = imx_clk_pfdv2("apll_pfd0", "apll", base + 0x50c, 0); + clks[IMX7ULP_CLK_APLL_PFD1] = imx_clk_pfdv2("apll_pfd1", "apll", base + 0x50c, 1); + clks[IMX7ULP_CLK_APLL_PFD2] = imx_clk_pfdv2("apll_pfd2", "apll", base + 0x50c, 2); + clks[IMX7ULP_CLK_APLL_PFD3] = imx_clk_pfdv2("apll_pfd3", "apll", base + 0x50c, 3); + + /* SPLL PFDs */ + clks[IMX7ULP_CLK_SPLL_PFD0] = imx_clk_pfdv2("spll_pfd0", "spll", base + 0x60C, 0); + clks[IMX7ULP_CLK_SPLL_PFD1] = imx_clk_pfdv2("spll_pfd1", "spll", base + 0x60C, 1); + clks[IMX7ULP_CLK_SPLL_PFD2] = imx_clk_pfdv2("spll_pfd2", "spll", base + 0x60C, 2); + clks[IMX7ULP_CLK_SPLL_PFD3] = imx_clk_pfdv2("spll_pfd3", "spll", base + 0x60C, 3); + + /* PLL Mux */ + clks[IMX7ULP_CLK_APLL_PFD_SEL] = imx_clk_hw_mux_flags("apll_pfd_sel", base + 0x508, 14, 2, apll_pfd_sels, ARRAY_SIZE(apll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PFD_SEL] = imx_clk_hw_mux_flags("spll_pfd_sel", base + 0x608, 14, 2, spll_pfd_sels, ARRAY_SIZE(spll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_APLL_SEL] = imx_clk_hw_mux_flags("apll_sel", base + 0x508, 1, 1, apll_sels, ARRAY_SIZE(apll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_SEL] = imx_clk_hw_mux_flags("spll_sel", base + 0x608, 1, 1, spll_sels, ARRAY_SIZE(spll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + + clks[IMX7ULP_CLK_SPLL_BUS_CLK] = imx_clk_divider_gate("spll_bus_clk", "spll_sel", CLK_SET_RATE_GATE, base + 0x604, 8, 3, 0, ulp_div_table, &imx_ccm_lock); + + /* scs/ddr/nic select different clock source requires that clock to be enabled first */ + clks[IMX7ULP_CLK_SYS_SEL] = imx_clk_hw_mux2("scs_sel", base + 0x14, 24, 4, scs_sels, ARRAY_SIZE(scs_sels)); + clks[IMX7ULP_CLK_NIC_SEL] = imx_clk_hw_mux2("nic_sel", base + 0x40, 28, 1, nic_sels, ARRAY_SIZE(nic_sels)); + clks[IMX7ULP_CLK_DDR_SEL] = imx_clk_hw_mux_flags("ddr_sel", base + 0x30, 24, 1, ddr_sels, ARRAY_SIZE(ddr_sels), CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE); + + clks[IMX7ULP_CLK_CORE_DIV] = imx_clk_hw_divider_flags("divcore", "scs_sel", base + 0x14, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_DDR_DIV] = imx_clk_divider_gate("ddr_clk", "ddr_sel", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, base + 0x30, 0, 3, + 0, ulp_div_table, &imx_ccm_lock); + + clks[IMX7ULP_CLK_NIC0_DIV] = imx_clk_hw_divider_flags("nic0_clk", "nic_sel", base + 0x40, 24, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_DIV] = imx_clk_hw_divider_flags("nic1_clk", "nic0_clk", base + 0x40, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_BUS_DIV] = imx_clk_hw_divider_flags("nic1_bus_clk", "nic1_clk", base + 0x40, 4, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_GPU_DIV] = imx_clk_hw_divider("gpu_clk", "nic0_clk", base + 0x40, 20, 4); + + clks[IMX7ULP_CLK_SOSC_BUS_CLK] = imx_clk_divider_gate("sosc_bus_clk", "sosc", 0, base + 0x104, 8, 3, + CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock); + clks[IMX7ULP_CLK_FIRC_BUS_CLK] = imx_clk_divider_gate("firc_bus_clk", "firc", 0, base + 0x304, 8, 3, + CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_scg1, "fsl,imx7ulp-scg1", imx7ulp_clk_scg1_init); + +static void __init imx7ulp_clk_pcc2_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_PCC2_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC2_END; + clks = clk_data->hws; + + /* PCC2 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_DMA1] = imx_clk_hw_gate("dma1", "nic1_clk", base + 0x20, 30); + clks[IMX7ULP_CLK_RGPIO2P1] = imx_clk_hw_gate("rgpio2p1", "nic1_bus_clk", base + 0x3c, 30); + clks[IMX7ULP_CLK_DMA_MUX1] = imx_clk_hw_gate("dma_mux1", "nic1_bus_clk", base + 0x84, 30); + clks[IMX7ULP_CLK_SNVS] = imx_clk_hw_gate("snvs", "nic1_bus_clk", base + 0x8c, 30); + clks[IMX7ULP_CLK_CAAM] = imx_clk_hw_gate("caam", "nic1_clk", base + 0x90, 30); + clks[IMX7ULP_CLK_LPTPM4] = imx7ulp_clk_composite("lptpm4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPTPM5] = imx7ulp_clk_composite("lptpm5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPIT1] = imx7ulp_clk_composite("lpit1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_LPSPI2] = imx7ulp_clk_composite("lpspi2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa4); + clks[IMX7ULP_CLK_LPSPI3] = imx7ulp_clk_composite("lpspi3", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa8); + clks[IMX7ULP_CLK_LPI2C4] = imx7ulp_clk_composite("lpi2c4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xac); + clks[IMX7ULP_CLK_LPI2C5] = imx7ulp_clk_composite("lpi2c5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb0); + clks[IMX7ULP_CLK_LPUART4] = imx7ulp_clk_composite("lpuart4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb4); + clks[IMX7ULP_CLK_LPUART5] = imx7ulp_clk_composite("lpuart5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb8); + clks[IMX7ULP_CLK_FLEXIO1] = imx7ulp_clk_composite("flexio1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xc4); + clks[IMX7ULP_CLK_USB0] = imx7ulp_clk_composite("usb0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xcc); + clks[IMX7ULP_CLK_USB1] = imx7ulp_clk_composite("usb1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xd0); + clks[IMX7ULP_CLK_USB_PHY] = imx_clk_hw_gate("usb_phy", "nic1_bus_clk", base + 0xd4, 30); + clks[IMX7ULP_CLK_USDHC0] = imx7ulp_clk_composite("usdhc0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xdc); + clks[IMX7ULP_CLK_USDHC1] = imx7ulp_clk_composite("usdhc1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xe0); + clks[IMX7ULP_CLK_WDG1] = imx7ulp_clk_composite("wdg1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xf4); + clks[IMX7ULP_CLK_WDG2] = imx7ulp_clk_composite("sdg2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0x10c); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc2, "fsl,imx7ulp-pcc2", imx7ulp_clk_pcc2_init); + +static void __init imx7ulp_clk_pcc3_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_PCC3_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC3_END; + clks = clk_data->hws; + + /* PCC3 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_LPTPM6] = imx7ulp_clk_composite("lptpm6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x84); + clks[IMX7ULP_CLK_LPTPM7] = imx7ulp_clk_composite("lptpm7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x88); + + clks[IMX7ULP_CLK_MMDC] = clk_hw_register_gate(NULL, "mmdc", "nic1_clk", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, + base + 0xac, 30, 0, &imx_ccm_lock); + clks[IMX7ULP_CLK_LPI2C6] = imx7ulp_clk_composite("lpi2c6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x90); + clks[IMX7ULP_CLK_LPI2C7] = imx7ulp_clk_composite("lpi2c7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPUART6] = imx7ulp_clk_composite("lpuart6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPUART7] = imx7ulp_clk_composite("lpuart7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_DSI] = imx7ulp_clk_composite("dsi", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xa4); + clks[IMX7ULP_CLK_LCDIF] = imx7ulp_clk_composite("lcdif", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xa8); + + clks[IMX7ULP_CLK_VIU] = imx_clk_hw_gate("viu", "nic1_clk", base + 0xa0, 30); + clks[IMX7ULP_CLK_PCTLC] = imx_clk_hw_gate("pctlc", "nic1_bus_clk", base + 0xb8, 30); + clks[IMX7ULP_CLK_PCTLD] = imx_clk_hw_gate("pctld", "nic1_bus_clk", base + 0xbc, 30); + clks[IMX7ULP_CLK_PCTLE] = imx_clk_hw_gate("pctle", "nic1_bus_clk", base + 0xc0, 30); + clks[IMX7ULP_CLK_PCTLF] = imx_clk_hw_gate("pctlf", "nic1_bus_clk", base + 0xc4, 30); + + clks[IMX7ULP_CLK_GPU3D] = imx7ulp_clk_composite("gpu3d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x140); + clks[IMX7ULP_CLK_GPU2D] = imx7ulp_clk_composite("gpu2d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x144); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc3, "fsl,imx7ulp-pcc3", imx7ulp_clk_pcc3_init); -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: aisheng.dong@nxp.com (A.s. Dong) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V6 9/9] clk: imx: add imx7ulp clk driver Date: Wed, 14 Nov 2018 13:02:08 +0000 [thread overview] Message-ID: <1542200198-3017-10-git-send-email-aisheng.dong@nxp.com> (raw) In-Reply-To: <1542200198-3017-1-git-send-email-aisheng.dong@nxp.com> i.MX7ULP Clock functions are under joint control of the System Clock Generation (SCG) modules, Peripheral Clock Control (PCC) modules, and Core Mode Controller (CMC)1 blocks The clocking scheme provides clear separation between M4 domain and A7 domain. Except for a few clock sources shared between two domains, such as the System Oscillator clock, the Slow IRC (SIRC), and and the Fast IRC clock (FIRCLK), clock sources and clock management are separated and contained within each domain. M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules. A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules. This driver only adds clock support in A7 domain. Note that most clocks required to be operated when gated, e.g. pll, pfd, pcc. And more special cases that scs/ddr/nic mux selecting different clock source requires that clock to be enabled first, then we need set CLK_OPS_PARENT_ENABLE flag for them properly. Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Anson Huang <Anson.Huang@nxp.com> Cc: Bai Ping <ping.bai@nxp.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: v5->v6: * sosc/firc/dpll/ddr clock should use divider table as they're not 1:1 v4->v5: * clk-composite API name changed accordingly v3->v4: * update after changing scg and pcc into separete nodes according to Rob's suggestion v2->v3: * no changes v1->v2: * use of_clk_add_hw_provider instead * split the clocks register process into two parts: early part for possible timers clocks registered by CLK_OF_DECLARE_DRIVER and the later part for the left normal peripheral clocks registered by a platform driver. --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-imx7ulp.c | 220 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 221 insertions(+) create mode 100644 drivers/clk/imx/clk-imx7ulp.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index a5cab3e..615b413 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -30,4 +30,5 @@ obj-$(CONFIG_SOC_IMX6SLL) += clk-imx6sll.o obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o obj-$(CONFIG_SOC_IMX7D) += clk-imx7d.o +obj-$(CONFIG_SOC_IMX7ULP) += clk-imx7ulp.o obj-$(CONFIG_SOC_VF610) += clk-vf610.o diff --git a/drivers/clk/imx/clk-imx7ulp.c b/drivers/clk/imx/clk-imx7ulp.c new file mode 100644 index 0000000..3b7507f --- /dev/null +++ b/drivers/clk/imx/clk-imx7ulp.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Author: Dong Aisheng <aisheng.dong@nxp.com> + * + */ + +#include <dt-bindings/clock/imx7ulp-clock.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include "clk.h" + +static const char * const pll_pre_sels[] = { "sosc", "firc", }; +static const char * const spll_pfd_sels[] = { "spll_pfd0", "spll_pfd1", "spll_pfd2", "spll_pfd3", }; +static const char * const spll_sels[] = { "spll", "spll_pfd_sel", }; +static const char * const apll_pfd_sels[] = { "apll_pfd0", "apll_pfd1", "apll_pfd2", "apll_pfd3", }; +static const char * const apll_sels[] = { "apll", "apll_pfd_sel", }; +static const char * const scs_sels[] = { "dummy", "sosc", "sirc", "firc", "dummy", "apll_sel", "spll_sel", "upll", }; +static const char * const ddr_sels[] = { "apll_pfd_sel", "upll", }; +static const char * const nic_sels[] = { "firc", "ddr_clk", }; +static const char * const periph_plat_sels[] = { "dummy", "nic1_bus_clk", "nic1_clk", "ddr_clk", "apll_pfd2", "apll_pfd1", "apll_pfd0", "upll", }; +static const char * const periph_bus_sels[] = { "dummy", "sosc_bus_clk", "mpll", "firc_bus_clk", "rosc", "nic1_bus_clk", "nic1_clk", "spll_bus_clk", }; + +/* used by sosc/sirc/firc/ddr/spll/apll dividers */ +static const struct clk_div_table ulp_div_table[] = { + { .val = 1, .div = 1, }, + { .val = 2, .div = 2, }, + { .val = 3, .div = 4, }, + { .val = 4, .div = 8, }, + { .val = 5, .div = 16, }, + { .val = 6, .div = 32, }, + { .val = 7, .div = 64, }, +}; + +static void __init imx7ulp_clk_scg1_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_SCG1_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_SCG1_END; + clks = clk_data->hws; + + clks[IMX7ULP_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0); + + clks[IMX7ULP_CLK_ROSC] = imx_obtain_fixed_clk_hw(np, "rosc"); + clks[IMX7ULP_CLK_SOSC] = imx_obtain_fixed_clk_hw(np, "sosc"); + clks[IMX7ULP_CLK_SIRC] = imx_obtain_fixed_clk_hw(np, "sirc"); + clks[IMX7ULP_CLK_FIRC] = imx_obtain_fixed_clk_hw(np, "firc"); + clks[IMX7ULP_CLK_MIPI_PLL] = imx_obtain_fixed_clk_hw(np, "mpll"); + clks[IMX7ULP_CLK_UPLL] = imx_obtain_fixed_clk_hw(np, "upll"); + + /* SCG1 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + /* NOTE: xPLL config can't be changed when xPLL is enabled */ + clks[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_hw_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_SEL] = imx_clk_hw_mux_flags("spll_pre_sel", base + 0x608, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + + /* name parent_name reg shift width flags */ + clks[IMX7ULP_CLK_APLL_PRE_DIV] = imx_clk_hw_divider_flags("apll_pre_div", "apll_pre_sel", base + 0x508, 8, 3, CLK_SET_RATE_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_DIV] = imx_clk_hw_divider_flags("spll_pre_div", "spll_pre_sel", base + 0x608, 8, 3, CLK_SET_RATE_GATE); + + /* name parent_name base */ + clks[IMX7ULP_CLK_APLL] = imx_clk_pllv4("apll", "apll_pre_div", base + 0x500); + clks[IMX7ULP_CLK_SPLL] = imx_clk_pllv4("spll", "spll_pre_div", base + 0x600); + + /* APLL PFDs */ + clks[IMX7ULP_CLK_APLL_PFD0] = imx_clk_pfdv2("apll_pfd0", "apll", base + 0x50c, 0); + clks[IMX7ULP_CLK_APLL_PFD1] = imx_clk_pfdv2("apll_pfd1", "apll", base + 0x50c, 1); + clks[IMX7ULP_CLK_APLL_PFD2] = imx_clk_pfdv2("apll_pfd2", "apll", base + 0x50c, 2); + clks[IMX7ULP_CLK_APLL_PFD3] = imx_clk_pfdv2("apll_pfd3", "apll", base + 0x50c, 3); + + /* SPLL PFDs */ + clks[IMX7ULP_CLK_SPLL_PFD0] = imx_clk_pfdv2("spll_pfd0", "spll", base + 0x60C, 0); + clks[IMX7ULP_CLK_SPLL_PFD1] = imx_clk_pfdv2("spll_pfd1", "spll", base + 0x60C, 1); + clks[IMX7ULP_CLK_SPLL_PFD2] = imx_clk_pfdv2("spll_pfd2", "spll", base + 0x60C, 2); + clks[IMX7ULP_CLK_SPLL_PFD3] = imx_clk_pfdv2("spll_pfd3", "spll", base + 0x60C, 3); + + /* PLL Mux */ + clks[IMX7ULP_CLK_APLL_PFD_SEL] = imx_clk_hw_mux_flags("apll_pfd_sel", base + 0x508, 14, 2, apll_pfd_sels, ARRAY_SIZE(apll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PFD_SEL] = imx_clk_hw_mux_flags("spll_pfd_sel", base + 0x608, 14, 2, spll_pfd_sels, ARRAY_SIZE(spll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_APLL_SEL] = imx_clk_hw_mux_flags("apll_sel", base + 0x508, 1, 1, apll_sels, ARRAY_SIZE(apll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_SEL] = imx_clk_hw_mux_flags("spll_sel", base + 0x608, 1, 1, spll_sels, ARRAY_SIZE(spll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + + clks[IMX7ULP_CLK_SPLL_BUS_CLK] = imx_clk_divider_gate("spll_bus_clk", "spll_sel", CLK_SET_RATE_GATE, base + 0x604, 8, 3, 0, ulp_div_table, &imx_ccm_lock); + + /* scs/ddr/nic select different clock source requires that clock to be enabled first */ + clks[IMX7ULP_CLK_SYS_SEL] = imx_clk_hw_mux2("scs_sel", base + 0x14, 24, 4, scs_sels, ARRAY_SIZE(scs_sels)); + clks[IMX7ULP_CLK_NIC_SEL] = imx_clk_hw_mux2("nic_sel", base + 0x40, 28, 1, nic_sels, ARRAY_SIZE(nic_sels)); + clks[IMX7ULP_CLK_DDR_SEL] = imx_clk_hw_mux_flags("ddr_sel", base + 0x30, 24, 1, ddr_sels, ARRAY_SIZE(ddr_sels), CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE); + + clks[IMX7ULP_CLK_CORE_DIV] = imx_clk_hw_divider_flags("divcore", "scs_sel", base + 0x14, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_DDR_DIV] = imx_clk_divider_gate("ddr_clk", "ddr_sel", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, base + 0x30, 0, 3, + 0, ulp_div_table, &imx_ccm_lock); + + clks[IMX7ULP_CLK_NIC0_DIV] = imx_clk_hw_divider_flags("nic0_clk", "nic_sel", base + 0x40, 24, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_DIV] = imx_clk_hw_divider_flags("nic1_clk", "nic0_clk", base + 0x40, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_BUS_DIV] = imx_clk_hw_divider_flags("nic1_bus_clk", "nic1_clk", base + 0x40, 4, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_GPU_DIV] = imx_clk_hw_divider("gpu_clk", "nic0_clk", base + 0x40, 20, 4); + + clks[IMX7ULP_CLK_SOSC_BUS_CLK] = imx_clk_divider_gate("sosc_bus_clk", "sosc", 0, base + 0x104, 8, 3, + CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock); + clks[IMX7ULP_CLK_FIRC_BUS_CLK] = imx_clk_divider_gate("firc_bus_clk", "firc", 0, base + 0x304, 8, 3, + CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_scg1, "fsl,imx7ulp-scg1", imx7ulp_clk_scg1_init); + +static void __init imx7ulp_clk_pcc2_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_PCC2_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC2_END; + clks = clk_data->hws; + + /* PCC2 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_DMA1] = imx_clk_hw_gate("dma1", "nic1_clk", base + 0x20, 30); + clks[IMX7ULP_CLK_RGPIO2P1] = imx_clk_hw_gate("rgpio2p1", "nic1_bus_clk", base + 0x3c, 30); + clks[IMX7ULP_CLK_DMA_MUX1] = imx_clk_hw_gate("dma_mux1", "nic1_bus_clk", base + 0x84, 30); + clks[IMX7ULP_CLK_SNVS] = imx_clk_hw_gate("snvs", "nic1_bus_clk", base + 0x8c, 30); + clks[IMX7ULP_CLK_CAAM] = imx_clk_hw_gate("caam", "nic1_clk", base + 0x90, 30); + clks[IMX7ULP_CLK_LPTPM4] = imx7ulp_clk_composite("lptpm4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPTPM5] = imx7ulp_clk_composite("lptpm5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPIT1] = imx7ulp_clk_composite("lpit1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_LPSPI2] = imx7ulp_clk_composite("lpspi2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa4); + clks[IMX7ULP_CLK_LPSPI3] = imx7ulp_clk_composite("lpspi3", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa8); + clks[IMX7ULP_CLK_LPI2C4] = imx7ulp_clk_composite("lpi2c4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xac); + clks[IMX7ULP_CLK_LPI2C5] = imx7ulp_clk_composite("lpi2c5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb0); + clks[IMX7ULP_CLK_LPUART4] = imx7ulp_clk_composite("lpuart4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb4); + clks[IMX7ULP_CLK_LPUART5] = imx7ulp_clk_composite("lpuart5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb8); + clks[IMX7ULP_CLK_FLEXIO1] = imx7ulp_clk_composite("flexio1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xc4); + clks[IMX7ULP_CLK_USB0] = imx7ulp_clk_composite("usb0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xcc); + clks[IMX7ULP_CLK_USB1] = imx7ulp_clk_composite("usb1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xd0); + clks[IMX7ULP_CLK_USB_PHY] = imx_clk_hw_gate("usb_phy", "nic1_bus_clk", base + 0xd4, 30); + clks[IMX7ULP_CLK_USDHC0] = imx7ulp_clk_composite("usdhc0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xdc); + clks[IMX7ULP_CLK_USDHC1] = imx7ulp_clk_composite("usdhc1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xe0); + clks[IMX7ULP_CLK_WDG1] = imx7ulp_clk_composite("wdg1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xf4); + clks[IMX7ULP_CLK_WDG2] = imx7ulp_clk_composite("sdg2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0x10c); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc2, "fsl,imx7ulp-pcc2", imx7ulp_clk_pcc2_init); + +static void __init imx7ulp_clk_pcc3_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_PCC3_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC3_END; + clks = clk_data->hws; + + /* PCC3 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_LPTPM6] = imx7ulp_clk_composite("lptpm6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x84); + clks[IMX7ULP_CLK_LPTPM7] = imx7ulp_clk_composite("lptpm7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x88); + + clks[IMX7ULP_CLK_MMDC] = clk_hw_register_gate(NULL, "mmdc", "nic1_clk", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, + base + 0xac, 30, 0, &imx_ccm_lock); + clks[IMX7ULP_CLK_LPI2C6] = imx7ulp_clk_composite("lpi2c6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x90); + clks[IMX7ULP_CLK_LPI2C7] = imx7ulp_clk_composite("lpi2c7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPUART6] = imx7ulp_clk_composite("lpuart6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPUART7] = imx7ulp_clk_composite("lpuart7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_DSI] = imx7ulp_clk_composite("dsi", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xa4); + clks[IMX7ULP_CLK_LCDIF] = imx7ulp_clk_composite("lcdif", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xa8); + + clks[IMX7ULP_CLK_VIU] = imx_clk_hw_gate("viu", "nic1_clk", base + 0xa0, 30); + clks[IMX7ULP_CLK_PCTLC] = imx_clk_hw_gate("pctlc", "nic1_bus_clk", base + 0xb8, 30); + clks[IMX7ULP_CLK_PCTLD] = imx_clk_hw_gate("pctld", "nic1_bus_clk", base + 0xbc, 30); + clks[IMX7ULP_CLK_PCTLE] = imx_clk_hw_gate("pctle", "nic1_bus_clk", base + 0xc0, 30); + clks[IMX7ULP_CLK_PCTLF] = imx_clk_hw_gate("pctlf", "nic1_bus_clk", base + 0xc4, 30); + + clks[IMX7ULP_CLK_GPU3D] = imx7ulp_clk_composite("gpu3d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x140); + clks[IMX7ULP_CLK_GPU2D] = imx7ulp_clk_composite("gpu2d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x144); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc3, "fsl,imx7ulp-pcc3", imx7ulp_clk_pcc3_init); -- 2.7.4
next prev parent reply other threads:[~2018-11-14 13:02 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-11-14 13:01 [PATCH V6 0/9] clk: add imx7ulp clk support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-11-14 13:01 ` [PATCH V6 1/9] clk: imx: add gatable clock divider support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:31 ` Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-11-14 13:01 ` [PATCH V6 2/9] clk: fractional-divider: add CLK_FRAC_DIVIDER_ZERO_BASED flag support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:31 ` Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-11-14 13:01 ` [PATCH V6 3/9] clk: imx: add pllv4 support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:31 ` Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-11-14 13:01 ` [PATCH V6 4/9] clk: imx: add pfdv2 support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:31 ` Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-11-14 13:01 ` [PATCH V6 5/9] clk: imx: add imx7ulp composite clk support A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:31 ` Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-11-14 13:01 ` [PATCH V6 6/9] dt-bindings: clock: add imx7ulp clock binding doc A.s. Dong 2018-11-14 13:01 ` A.s. Dong 2018-12-03 19:32 ` Stephen Boyd 2018-12-03 19:32 ` Stephen Boyd 2018-11-14 13:02 ` [PATCH V6 7/9] clk: imx: make mux parent strings const A.s. Dong 2018-11-14 13:02 ` A.s. Dong 2018-12-03 19:32 ` Stephen Boyd 2018-12-03 19:32 ` Stephen Boyd 2018-11-14 13:02 ` [PATCH V6 8/9] clk: imx: implement new clk_hw based APIs A.s. Dong 2018-11-14 13:02 ` A.s. Dong 2018-12-03 19:32 ` Stephen Boyd 2018-12-03 19:32 ` Stephen Boyd 2018-11-14 13:02 ` A.s. Dong [this message] 2018-11-14 13:02 ` [PATCH V6 9/9] clk: imx: add imx7ulp clk driver A.s. Dong 2018-12-03 19:32 ` Stephen Boyd 2018-12-03 19:32 ` Stephen Boyd 2018-12-03 19:31 ` [PATCH V6 0/9] clk: add imx7ulp clk support Stephen Boyd 2018-12-03 19:31 ` Stephen Boyd 2018-12-04 1:29 ` Aisheng DONG 2018-12-04 1:29 ` Aisheng DONG 2018-12-05 19:41 ` Stephen Boyd 2018-12-05 19:41 ` Stephen Boyd 2018-12-10 8:14 ` Shawn Guo 2018-12-10 8:14 ` Shawn Guo 2018-12-10 19:20 ` Stephen Boyd 2018-12-10 19:20 ` Stephen Boyd
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