Add i.MXRT clk driver support.
Signed-off-by: Giulio Benetti giulio.benetti@benettiengineering.com --- drivers/clk/imx/Kconfig | 16 ++ drivers/clk/imx/Makefile | 2 + drivers/clk/imx/clk-imxrt.c | 254 ++++++++++++++++++++++++ include/dt-bindings/clock/imxrt-clock.h | 65 ++++++ 4 files changed, 337 insertions(+) create mode 100644 drivers/clk/imx/clk-imxrt.c create mode 100644 include/dt-bindings/clock/imxrt-clock.h
diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index 0ba8bc9f63..88b7c867bf 100644 --- a/drivers/clk/imx/Kconfig +++ b/drivers/clk/imx/Kconfig @@ -52,3 +52,19 @@ config CLK_IMX8MN select CLK_CCF help This enables support clock driver for i.MX8MN platforms. + +config SPL_CLK_IMXRT + bool "SPL clock support for i.MXRT" + depends on ARCH_IMXRT && SPL + select SPL_CLK + select SPL_CLK_CCF + help + This enables SPL DM/DTS support for clock driver in i.MXRT + +config CLK_IMXRT + bool "Clock support for i.MXRT" + depends on ARCH_IMXRT + select CLK + select CLK_CCF + help + This enables support clock driver for i.MXRT platforms. diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 222c5a4e08..99e574ffcf 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -14,3 +14,5 @@ obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MM) += clk-imx8mm.o clk-pll14xx.o \ clk-composite-8m.o obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MN) += clk-imx8mn.o clk-pll14xx.o \ clk-composite-8m.o + +obj-$(CONFIG_$(SPL_TPL_)CLK_IMXRT) += clk-imxrt.o diff --git a/drivers/clk/imx/clk-imxrt.c b/drivers/clk/imx/clk-imxrt.c new file mode 100644 index 0000000000..f329e421fc --- /dev/null +++ b/drivers/clk/imx/clk-imxrt.c @@ -0,0 +1,254 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 NXP + * Peng Fan peng.fan@nxp.com + */ + +#include <common.h> +#include <clk.h> +#include <clk-uclass.h> +#include <dm.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <dt-bindings/clock/imxrt-clock.h> + +#include "clk.h" + +static ulong imxrt_clk_get_rate(struct clk *clk) +{ + struct clk *c; + int ret; + + debug("%s(#%lu)\n", __func__, clk->id); + + ret = clk_get_by_id(clk->id, &c); + if (ret) + return ret; + + return clk_get_rate(c); +} + +static ulong imxrt_clk_set_rate(struct clk *clk, unsigned long rate) +{ + struct clk *c; + int ret; + + debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate); + + ret = clk_get_by_id(clk->id, &c); + if (ret) + return ret; + + return clk_set_rate(c, rate); +} + +static int __imxrt_clk_enable(struct clk *clk, bool enable) +{ + struct clk *c; + int ret; + + debug("%s(#%lu) en: %d\n", __func__, clk->id, enable); + + ret = clk_get_by_id(clk->id, &c); + if (ret) + return ret; + + if (enable) + ret = clk_enable(c); + else + ret = clk_disable(c); + + return ret; +} + +static int imxrt_clk_disable(struct clk *clk) +{ + return __imxrt_clk_enable(clk, 0); +} + +static int imxrt_clk_enable(struct clk *clk) +{ + return __imxrt_clk_enable(clk, 1); +} + +static struct clk_ops imxrt_clk_ops = { + .set_rate = imxrt_clk_set_rate, + .get_rate = imxrt_clk_get_rate, + .enable = imxrt_clk_enable, + .disable = imxrt_clk_disable, +}; + +static const char * const pll1_bypass_sels[] = {"pll1_arm", "osc", }; +static const char * const pll2_bypass_sels[] = {"pll2_sys", "osc", }; +static const char * const pll3_bypass_sels[] = {"pll3_usb1", "osc", }; + +static const char *const pre_periph_sels[] = { "pll2_sys", "pll2_pfd2_396m", "pll2_pfd0_352m", "arm_podf", }; +static const char *const periph_sels[] = { "pre_periph_sel", "todo", }; +static const char *const usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; +static const char *const lpuart_sels[] = { "pll3_80m", "osc", }; +static const char *const semc_alt_sels[] = { "pll2_pfd2_396m", "pll3_pfd1_664_62m", }; +static const char *const semc_sels[] = { "periph_sel", "semc_alt_sel", }; +static const char *const lcdif_sels[] = { "pll2_sys", "pll3_pfd3_454_74m", "pll5_TODO:", "pll2_pfd0_352m", "pll2_pfd1_594m", "pll3_pfd1_664_62m"}; + +static int imxrt_clk_probe(struct udevice *dev) +{ + void *base; + + /* Anatop clocks */ + base = (void *)ANATOP_BASE_ADDR; + + clk_dm(IMXRT_CLK_PLL1, + imx_clk_pllv3(IMX_PLLV3_SYS, "pll1_arm", "osc", + base + 0x0, 0x7f)); + clk_dm(IMXRT_CLK_PLL2, + imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_sys", "osc", + base + 0x30, 0x1)); + clk_dm(IMXRT_CLK_PLL3_USB_OTG, + imx_clk_pllv3(IMX_PLLV3_USB, "pll3_usb1", "osc", + base + 0x10, 0x1)); + + /* PLL bypass out */ + clk_dm(IMXRT_CLK_PLL1_BYPASS, + imx_clk_mux_flags("pll1_bypass", base + 0x0, 16, 1, + pll1_bypass_sels, + ARRAY_SIZE(pll1_bypass_sels), + CLK_SET_RATE_PARENT)); + clk_dm(IMXRT_CLK_PLL2_BYPASS, + imx_clk_mux_flags("pll2_bypass", base + 0x30, 16, 1, + pll2_bypass_sels, + ARRAY_SIZE(pll2_bypass_sels), + CLK_SET_RATE_PARENT)); + clk_dm(IMXRT_CLK_PLL3_BYPASS, + imx_clk_mux_flags("pll3_bypass", base + 0x10, 16, 1, + pll3_bypass_sels, + ARRAY_SIZE(pll3_bypass_sels), + CLK_SET_RATE_PARENT)); + + clk_dm(IMXRT_CLK_PLL3_80M, + imx_clk_fixed_factor("pll3_80m", "pll3_usb1", 1, 6)); + + clk_dm(IMXRT_CLK_PLL2_PFD0_352M, + imx_clk_pfd("pll2_pfd0_352m", "pll2_sys", base + 0x100, 0)); + clk_dm(IMXRT_CLK_PLL2_PFD1_594M, + imx_clk_pfd("pll2_pfd1_594m", "pll2_sys", base + 0x100, 1)); + clk_dm(IMXRT_CLK_PLL2_PFD2_396M, + imx_clk_pfd("pll2_pfd2_396m", "pll2_sys", base + 0x100, 2)); + clk_dm(IMXRT_CLK_PLL3_PFD1_664_62M, + imx_clk_pfd("pll3_pfd1_664_62m", "pll3_usb1", base + 0xf0, 1)); + clk_dm(IMXRT_CLK_PLL3_PFD3_454_74M, + imx_clk_pfd("pll3_pfd3_454_74m", "pll3_usb1", base + 0xf0, 3)); + + /* CCM clocks */ + base = dev_read_addr_ptr(dev); + if (base == (void *)FDT_ADDR_T_NONE) + return -EINVAL; + + clk_dm(IMXRT_CLK_ARM_PODF, + imx_clk_divider("arm_podf", "pll1_arm", + base + 0x10, 0, 3)); + + clk_dm(IMXRT_CLK_PRE_PERIPH_SEL, + imx_clk_mux("pre_periph_sel", base + 0x18, 18, 2, + pre_periph_sels, ARRAY_SIZE(pre_periph_sels))); + clk_dm(IMXRT_CLK_PERIPH_SEL, + imx_clk_mux("periph_sel", base + 0x14, 25, 1, + periph_sels, ARRAY_SIZE(periph_sels))); + clk_dm(IMXRT_CLK_USDHC1_SEL, + imx_clk_mux("usdhc1_sel", base + 0x1c, 16, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT_CLK_USDHC2_SEL, + imx_clk_mux("usdhc2_sel", base + 0x1c, 17, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT_CLK_LPUART_SEL, + imx_clk_mux("lpuart_sel", base + 0x24, 6, 1, + lpuart_sels, ARRAY_SIZE(lpuart_sels))); + clk_dm(IMXRT_CLK_SEMC_ALT_SEL, + imx_clk_mux("semc_alt_sel", base + 0x14, 7, 1, + semc_alt_sels, ARRAY_SIZE(semc_alt_sels))); + clk_dm(IMXRT_CLK_SEMC_SEL, + imx_clk_mux("semc_sel", base + 0x14, 6, 1, + semc_sels, ARRAY_SIZE(semc_sels))); + clk_dm(IMXRT_CLK_LCDIF_SEL, + imx_clk_mux("lcdif_sel", base + 0x38, 15, 3, + lcdif_sels, ARRAY_SIZE(lcdif_sels))); + + clk_dm(IMXRT_CLK_AHB_PODF, + imx_clk_divider("ahb_podf", "periph_sel", + base + 0x14, 10, 3)); + clk_dm(IMXRT_CLK_USDHC1_PODF, + imx_clk_divider("usdhc1_podf", "usdhc1_sel", + base + 0x24, 11, 3)); + clk_dm(IMXRT_CLK_USDHC2_PODF, + imx_clk_divider("usdhc2_podf", "usdhc2_sel", + base + 0x24, 16, 3)); + clk_dm(IMXRT_CLK_LPUART_PODF, + imx_clk_divider("lpuart_podf", "lpuart_sel", + base + 0x24, 0, 6)); + clk_dm(IMXRT_CLK_SEMC_PODF, + imx_clk_divider("semc_podf", "semc_sel", + base + 0x14, 16, 3)); + clk_dm(IMXRT_CLK_LCDIF_PRED, + imx_clk_divider("lcdif_pred", "lcdif_sel", + base + 0x38, 12, 3)); + clk_dm(IMXRT_CLK_LCDIF_PODF, + imx_clk_divider("lcdif_podf", "lcdif_pred", + base + 0x18, 23, 3)); + + clk_dm(IMXRT_CLK_USDHC1, + imx_clk_gate2("usdhc1", "usdhc1_podf", base + 0x80, 2)); + clk_dm(IMXRT_CLK_USDHC2, + imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4)); + clk_dm(IMXRT_CLK_LPUART1, + imx_clk_gate2("lpuart1", "lpuart_podf", base + 0x7c, 24)); + clk_dm(IMXRT_CLK_SEMC, + imx_clk_gate2("semc", "semc_podf", base + 0x74, 4)); + clk_dm(IMXRT_CLK_LCDIF, + imx_clk_gate2("lcdif", "lcdif_podf", base + 0x70, 28)); + +#ifdef CONFIG_SPL_BUILD + struct clk *clk, *clk1; + + clk_get_by_id(IMXRT_CLK_PLL1, &clk); + clk_enable(clk); + clk_set_rate(clk, 1056000000UL); + + clk_get_by_id(IMXRT_CLK_PLL1_BYPASS, &clk1); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT_CLK_SEMC_SEL, &clk1); + clk_get_by_id(IMXRT_CLK_SEMC_ALT_SEL, &clk); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT_CLK_PLL2, &clk); + clk_enable(clk); + clk_set_rate(clk, 528000000UL); + + clk_get_by_id(IMXRT_CLK_PLL2_BYPASS, &clk1); + clk_set_parent(clk1, clk); + + /* Configure PLL3_USB_OTG to 480MHz */ + clk_get_by_id(IMXRT_CLK_PLL3_USB_OTG, &clk); + clk_enable(clk); + clk_set_rate(clk, 480000000UL); + + clk_get_by_id(IMXRT_CLK_PLL3_BYPASS, &clk1); + clk_set_parent(clk1, clk); + +#endif + + return 0; +} + +static const struct udevice_id imxrt_clk_ids[] = { + { .compatible = "fsl,imxrt-ccm" }, + { }, +}; + +U_BOOT_DRIVER(imxrt_clk) = { + .name = "clk_imxrt", + .id = UCLASS_CLK, + .of_match = imxrt_clk_ids, + .ops = &imxrt_clk_ops, + .probe = imxrt_clk_probe, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/include/dt-bindings/clock/imxrt-clock.h b/include/dt-bindings/clock/imxrt-clock.h new file mode 100644 index 0000000000..7b7200fc09 --- /dev/null +++ b/include/dt-bindings/clock/imxrt-clock.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright(C) 2019 + * Author(s): Giulio Benetti giulio.benetti@benettiengineering.com + */ + +#ifndef __DT_BINDINGS_CLOCK_IMXRT_H +#define __DT_BINDINGS_CLOCK_IMXRT_H + +#define IMXRT_CLK_DUMMY 0 +#define IMXRT_CLK_CKIL 1 +#define IMXRT_CLK_CKIH 2 +#define IMXRT_CLK_OSC 3 +#define IMXRT_CLK_PLL2_PFD0_352M 4 +#define IMXRT_CLK_PLL2_PFD1_594M 5 +#define IMXRT_CLK_PLL2_PFD2_396M 6 +#define IMXRT_CLK_PLL3_PFD0_720M 7 +#define IMXRT_CLK_PLL3_PFD1_664_62M 8 +#define IMXRT_CLK_PLL3_PFD2_508_24M 9 +#define IMXRT_CLK_PLL3_PFD3_454_74M 10 +#define IMXRT_CLK_PLL2_198M 11 +#define IMXRT_CLK_PLL3_120M 12 +#define IMXRT_CLK_PLL3_80M 13 +#define IMXRT_CLK_PLL3_60M 14 +#define IMXRT_CLK_PLL1_BYPASS 15 +#define IMXRT_CLK_PLL2_BYPASS 16 +#define IMXRT_CLK_PLL3_BYPASS 17 +#define IMXRT_CLK_PRE_PERIPH_SEL 44 +#define IMXRT_CLK_PERIPH_SEL 45 +#define IMXRT_CLK_SEMC_ALT_SEL 46 +#define IMXRT_CLK_SEMC_SEL 47 +#define IMXRT_CLK_USDHC1_SEL 48 +#define IMXRT_CLK_USDHC2_SEL 49 +#define IMXRT_CLK_LPUART_SEL 50 +#define IMXRT_CLK_LCDIF_SEL 51 +#define IMXRT_CLK_ARM_PODF 90 +#define IMXRT_CLK_LPUART_PODF 91 +#define IMXRT_CLK_USDHC1_PODF 92 +#define IMXRT_CLK_USDHC2_PODF 93 +#define IMXRT_CLK_SEMC_PODF 94 +#define IMXRT_CLK_AHB_PODF 95 +#define IMXRT_CLK_LCDIF_PRED 96 +#define IMXRT_CLK_LCDIF_PODF 97 +#define IMXRT_CLK_USDHC1 163 +#define IMXRT_CLK_USDHC2 164 +#define IMXRT_CLK_LPUART1 165 +#define IMXRT_CLK_SEMC 166 +#define IMXRT_CLK_LCDIF 167 +#define IMXRT_CLK_PLL1_SYS 170 +#define IMXRT_CLK_PLL2_BUS 171 +#define IMXRT_CLK_PLL3_USB_OTG 172 +#define IMXRT_CLK_PLL4_AUDIO 173 +#define IMXRT_CLK_PLL5_VIDEO 174 +#define IMXRT_CLK_PLL7_USB_HOST 176 +#define IMXRT_CLK_PLL6_ENET 177 +#define IMXRT_CLK_PLL1 223 +#define IMXRT_CLK_PLL2 224 +#define IMXRT_CLK_PLL3 225 +#define IMXRT_CLK_PLL4 226 +#define IMXRT_CLK_PLL5 227 +#define IMXRT_CLK_PLL6 228 +#define IMXRT_CLK_PLL7 229 +#define IMXRT_CLK_END 266 + +#endif /* __DT_BINDINGS_CLOCK_IMXRT_H */