diff options
Diffstat (limited to 'drivers/clk/imx')
| -rw-r--r-- | drivers/clk/imx/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/clk/imx/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clk/imx/clk-imxrt1020.c | 227 | ||||
| -rw-r--r-- | drivers/clk/imx/clk-imxrt1050.c | 30 | ||||
| -rw-r--r-- | drivers/clk/imx/clk-pllv3.c | 9 |
5 files changed, 281 insertions, 2 deletions
diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index 059bc2fbb9..96721bcbf3 100644 --- a/drivers/clk/imx/Kconfig +++ b/drivers/clk/imx/Kconfig @@ -69,6 +69,22 @@ config CLK_IMX8MP help This enables support clock driver for i.MX8MP platforms. +config SPL_CLK_IMXRT1020 + bool "SPL clock support for i.MXRT1020" + depends on ARCH_IMXRT && SPL + select SPL_CLK + select SPL_CLK_CCF + help + This enables SPL DM/DTS support for clock driver in i.MXRT1020 + +config CLK_IMXRT1020 + bool "Clock support for i.MXRT1020" + depends on ARCH_IMXRT + select CLK + select CLK_CCF + help + This enables support clock driver for i.MXRT1020 platforms. + config SPL_CLK_IMXRT1050 bool "SPL clock support for i.MXRT1050" depends on ARCH_IMXRT && SPL diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 1e8a49d0f3..01bbbdf3ae 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -17,4 +17,5 @@ obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MN) += clk-imx8mn.o clk-pll14xx.o \ obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MP) += clk-imx8mp.o clk-pll14xx.o \ clk-composite-8m.o +obj-$(CONFIG_$(SPL_TPL_)CLK_IMXRT1020) += clk-imxrt1020.o obj-$(CONFIG_$(SPL_TPL_)CLK_IMXRT1050) += clk-imxrt1050.o diff --git a/drivers/clk/imx/clk-imxrt1020.c b/drivers/clk/imx/clk-imxrt1020.c new file mode 100644 index 0000000000..840f783940 --- /dev/null +++ b/drivers/clk/imx/clk-imxrt1020.c @@ -0,0 +1,227 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright(C) 2020 + * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.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/imxrt1020-clock.h> + +#include "clk.h" + +static ulong imxrt1020_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 imxrt1020_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 __imxrt1020_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 imxrt1020_clk_disable(struct clk *clk) +{ + return __imxrt1020_clk_enable(clk, 0); +} + +static int imxrt1020_clk_enable(struct clk *clk) +{ + return __imxrt1020_clk_enable(clk, 1); +} + +static struct clk_ops imxrt1020_clk_ops = { + .set_rate = imxrt1020_clk_set_rate, + .get_rate = imxrt1020_clk_get_rate, + .enable = imxrt1020_clk_enable, + .disable = imxrt1020_clk_disable, +}; + +static const char * const pll2_bypass_sels[] = {"pll2_sys", "osc", }; +static const char * const pll3_bypass_sels[] = {"pll3_usb_otg", "osc", }; + +static const char *const pre_periph_sels[] = { "pll2_sys", "pll2_pfd3_297m", "pll3_pfd3_454_74m", "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 int imxrt1020_clk_probe(struct udevice *dev) +{ + void *base; + + /* Anatop clocks */ + base = (void *)ANATOP_BASE_ADDR; + + clk_dm(IMXRT1020_CLK_PLL2_SYS, + imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_sys", "osc", + base + 0x30, 0x1)); + clk_dm(IMXRT1020_CLK_PLL3_USB_OTG, + imx_clk_pllv3(IMX_PLLV3_USB, "pll3_usb_otg", "osc", + base + 0x10, 0x1)); + + /* PLL bypass out */ + clk_dm(IMXRT1020_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(IMXRT1020_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(IMXRT1020_CLK_PLL3_80M, + imx_clk_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6)); + + clk_dm(IMXRT1020_CLK_PLL2_PFD0_352M, + imx_clk_pfd("pll2_pfd0_352m", "pll2_sys", base + 0x100, 0)); + clk_dm(IMXRT1020_CLK_PLL2_PFD1_594M, + imx_clk_pfd("pll2_pfd1_594m", "pll2_sys", base + 0x100, 1)); + clk_dm(IMXRT1020_CLK_PLL2_PFD2_396M, + imx_clk_pfd("pll2_pfd2_396m", "pll2_sys", base + 0x100, 2)); + clk_dm(IMXRT1020_CLK_PLL2_PFD3_297M, + imx_clk_pfd("pll2_pfd3_297m", "pll2_sys", base + 0x100, 3)); + clk_dm(IMXRT1020_CLK_PLL3_PFD1_664_62M, + imx_clk_pfd("pll3_pfd1_664_62m", "pll3_usb_otg", base + 0xf0, 1)); + clk_dm(IMXRT1020_CLK_PLL3_PFD3_454_74M, + imx_clk_pfd("pll3_pfd3_454_74m", "pll3_usb_otg", base + 0xf0, 3)); + + /* CCM clocks */ + base = dev_read_addr_ptr(dev); + if (base == (void *)FDT_ADDR_T_NONE) + return -EINVAL; + + clk_dm(IMXRT1020_CLK_PRE_PERIPH_SEL, + imx_clk_mux("pre_periph_sel", base + 0x18, 18, 2, + pre_periph_sels, ARRAY_SIZE(pre_periph_sels))); + clk_dm(IMXRT1020_CLK_PERIPH_SEL, + imx_clk_mux("periph_sel", base + 0x14, 25, 1, + periph_sels, ARRAY_SIZE(periph_sels))); + clk_dm(IMXRT1020_CLK_USDHC1_SEL, + imx_clk_mux("usdhc1_sel", base + 0x1c, 16, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT1020_CLK_USDHC2_SEL, + imx_clk_mux("usdhc2_sel", base + 0x1c, 17, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT1020_CLK_LPUART_SEL, + imx_clk_mux("lpuart_sel", base + 0x24, 6, 1, + lpuart_sels, ARRAY_SIZE(lpuart_sels))); + clk_dm(IMXRT1020_CLK_SEMC_ALT_SEL, + imx_clk_mux("semc_alt_sel", base + 0x14, 7, 1, + semc_alt_sels, ARRAY_SIZE(semc_alt_sels))); + clk_dm(IMXRT1020_CLK_SEMC_SEL, + imx_clk_mux("semc_sel", base + 0x14, 6, 1, + semc_sels, ARRAY_SIZE(semc_sels))); + + clk_dm(IMXRT1020_CLK_AHB_PODF, + imx_clk_divider("ahb_podf", "periph_sel", + base + 0x14, 10, 3)); + clk_dm(IMXRT1020_CLK_USDHC1_PODF, + imx_clk_divider("usdhc1_podf", "usdhc1_sel", + base + 0x24, 11, 3)); + clk_dm(IMXRT1020_CLK_USDHC2_PODF, + imx_clk_divider("usdhc2_podf", "usdhc2_sel", + base + 0x24, 16, 3)); + clk_dm(IMXRT1020_CLK_LPUART_PODF, + imx_clk_divider("lpuart_podf", "lpuart_sel", + base + 0x24, 0, 6)); + clk_dm(IMXRT1020_CLK_SEMC_PODF, + imx_clk_divider("semc_podf", "semc_sel", + base + 0x14, 16, 3)); + + clk_dm(IMXRT1020_CLK_USDHC1, + imx_clk_gate2("usdhc1", "usdhc1_podf", base + 0x80, 2)); + clk_dm(IMXRT1020_CLK_USDHC2, + imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4)); + clk_dm(IMXRT1020_CLK_LPUART1, + imx_clk_gate2("lpuart1", "lpuart_podf", base + 0x7c, 24)); + clk_dm(IMXRT1020_CLK_SEMC, + imx_clk_gate2("semc", "semc_podf", base + 0x74, 4)); + +#ifdef CONFIG_SPL_BUILD + struct clk *clk, *clk1; + + clk_get_by_id(IMXRT1020_CLK_SEMC_SEL, &clk1); + clk_get_by_id(IMXRT1020_CLK_SEMC_ALT_SEL, &clk); + clk_set_parent(clk1, clk); + + /* Configure PLL3_USB_OTG to 480MHz */ + clk_get_by_id(IMXRT1020_CLK_PLL3_USB_OTG, &clk); + clk_enable(clk); + clk_set_rate(clk, 480000000UL); + + clk_get_by_id(IMXRT1020_CLK_PLL3_BYPASS, &clk1); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT1020_CLK_PLL2_PFD3_297M, &clk); + clk_set_rate(clk, 297000000UL); + + clk_get_by_id(IMXRT1020_CLK_PLL2_SYS, &clk); + clk_enable(clk); + clk_set_rate(clk, 528000000UL); + + clk_get_by_id(IMXRT1020_CLK_PLL2_BYPASS, &clk1); + clk_set_parent(clk1, clk); + +#endif + + return 0; +} + +static const struct udevice_id imxrt1020_clk_ids[] = { + { .compatible = "fsl,imxrt1020-ccm" }, + { }, +}; + +U_BOOT_DRIVER(imxrt1020_clk) = { + .name = "clk_imxrt1020", + .id = UCLASS_CLK, + .of_match = imxrt1020_clk_ids, + .ops = &imxrt1020_clk_ops, + .probe = imxrt1020_clk_probe, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/drivers/clk/imx/clk-imxrt1050.c b/drivers/clk/imx/clk-imxrt1050.c index 44ca52c013..329f4580c5 100644 --- a/drivers/clk/imx/clk-imxrt1050.c +++ b/drivers/clk/imx/clk-imxrt1050.c @@ -71,11 +71,30 @@ static int imxrt1050_clk_enable(struct clk *clk) return __imxrt1050_clk_enable(clk, 1); } +static int imxrt1050_clk_set_parent(struct clk *clk, struct clk *parent) +{ + struct clk *c, *cp; + int ret; + + debug("%s(#%lu), parent: %lu\n", __func__, clk->id, parent->id); + + ret = clk_get_by_id(clk->id, &c); + if (ret) + return ret; + + ret = clk_get_by_id(parent->id, &cp); + if (ret) + return ret; + + return clk_set_parent(c, cp); +} + static struct clk_ops imxrt1050_clk_ops = { .set_rate = imxrt1050_clk_set_rate, .get_rate = imxrt1050_clk_get_rate, .enable = imxrt1050_clk_enable, .disable = imxrt1050_clk_disable, + .set_parent = imxrt1050_clk_set_parent, }; static const char * const pll_ref_sels[] = {"osc", "dummy", }; @@ -90,7 +109,7 @@ 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_video:", "pll2_pfd0_352m", "pll2_pfd1_594m", "pll3_pfd1_664_62m"}; +static const char *const lcdif_sels[] = { "pll2_sys", "pll3_pfd3_454_74m", "pll5_video", "pll2_pfd0_352m", "pll2_pfd1_594m", "pll3_pfd1_664_62m"}; static int imxrt1050_clk_probe(struct udevice *dev) { @@ -238,9 +257,9 @@ static int imxrt1050_clk_probe(struct udevice *dev) clk_dm(IMXRT1050_CLK_LCDIF, imx_clk_gate2("lcdif", "lcdif_podf", base + 0x70, 28)); -#ifdef CONFIG_SPL_BUILD struct clk *clk, *clk1; +#ifdef CONFIG_SPL_BUILD /* bypass pll1 before setting its rate */ clk_get_by_id(IMXRT1050_CLK_PLL1_REF_SEL, &clk); clk_get_by_id(IMXRT1050_CLK_PLL1_BYPASS, &clk1); @@ -271,7 +290,14 @@ static int imxrt1050_clk_probe(struct udevice *dev) clk_get_by_id(IMXRT1050_CLK_PLL3_BYPASS, &clk1); clk_set_parent(clk1, clk); +#else + /* Set PLL5 for LCDIF to its default 650Mhz */ + clk_get_by_id(IMXRT1050_CLK_PLL5_VIDEO, &clk); + clk_enable(clk); + clk_set_rate(clk, 650000000UL); + clk_get_by_id(IMXRT1050_CLK_PLL5_BYPASS, &clk1); + clk_set_parent(clk1, clk); #endif return 0; diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c index 525442debf..b4a9d587e1 100644 --- a/drivers/clk/imx/clk-pllv3.c +++ b/drivers/clk/imx/clk-pllv3.c @@ -25,6 +25,7 @@ #define PLL_DENOM_OFFSET 0x20 #define BM_PLL_POWER (0x1 << 12) +#define BM_PLL_ENABLE (0x1 << 13) #define BM_PLL_LOCK (0x1 << 31) struct clk_pllv3 { @@ -32,6 +33,7 @@ struct clk_pllv3 { void __iomem *base; u32 power_bit; bool powerup_set; + u32 enable_bit; u32 div_mask; u32 div_shift; }; @@ -83,6 +85,9 @@ static int clk_pllv3_generic_enable(struct clk *clk) val |= pll->power_bit; else val &= ~pll->power_bit; + + val |= pll->enable_bit; + writel(val, pll->base); return 0; @@ -98,6 +103,9 @@ static int clk_pllv3_generic_disable(struct clk *clk) val &= ~pll->power_bit; else val |= pll->power_bit; + + val &= ~pll->enable_bit; + writel(val, pll->base); return 0; @@ -238,6 +246,7 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name, return ERR_PTR(-ENOMEM); pll->power_bit = BM_PLL_POWER; + pll->enable_bit = BM_PLL_ENABLE; switch (type) { case IMX_PLLV3_GENERIC: |