diff options
Diffstat (limited to 'drivers/clk/imx/clk-imxrt1050.c')
| -rw-r--r-- | drivers/clk/imx/clk-imxrt1050.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-imxrt1050.c b/drivers/clk/imx/clk-imxrt1050.c new file mode 100644 index 0000000000..44ca52c013 --- /dev/null +++ b/drivers/clk/imx/clk-imxrt1050.c @@ -0,0 +1,292 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright(C) 2019 + * 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/imxrt1050-clock.h> + +#include "clk.h" + +static ulong imxrt1050_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 imxrt1050_clk_set_rate(struct clk *clk, ulong 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 __imxrt1050_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 imxrt1050_clk_disable(struct clk *clk) +{ + return __imxrt1050_clk_enable(clk, 0); +} + +static int imxrt1050_clk_enable(struct clk *clk) +{ + return __imxrt1050_clk_enable(clk, 1); +} + +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, +}; + +static const char * const pll_ref_sels[] = {"osc", "dummy", }; +static const char * const pll1_bypass_sels[] = {"pll1_arm", "pll1_arm_ref_sel", }; +static const char * const pll2_bypass_sels[] = {"pll2_sys", "pll2_sys_ref_sel", }; +static const char * const pll3_bypass_sels[] = {"pll3_usb_otg", "pll3_usb_otg_ref_sel", }; +static const char * const pll5_bypass_sels[] = {"pll5_video", "pll5_video_ref_sel", }; + +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_video:", "pll2_pfd0_352m", "pll2_pfd1_594m", "pll3_pfd1_664_62m"}; + +static int imxrt1050_clk_probe(struct udevice *dev) +{ + void *base; + + /* Anatop clocks */ + base = (void *)ANATOP_BASE_ADDR; + + clk_dm(IMXRT1050_CLK_PLL1_REF_SEL, + imx_clk_mux("pll1_arm_ref_sel", base + 0x0, 14, 2, + pll_ref_sels, ARRAY_SIZE(pll_ref_sels))); + clk_dm(IMXRT1050_CLK_PLL2_REF_SEL, + imx_clk_mux("pll2_sys_ref_sel", base + 0x30, 14, 2, + pll_ref_sels, ARRAY_SIZE(pll_ref_sels))); + clk_dm(IMXRT1050_CLK_PLL3_REF_SEL, + imx_clk_mux("pll3_usb_otg_ref_sel", base + 0x10, 14, 2, + pll_ref_sels, ARRAY_SIZE(pll_ref_sels))); + clk_dm(IMXRT1050_CLK_PLL5_REF_SEL, + imx_clk_mux("pll5_video_ref_sel", base + 0xa0, 14, 2, + pll_ref_sels, ARRAY_SIZE(pll_ref_sels))); + + clk_dm(IMXRT1050_CLK_PLL1_ARM, + imx_clk_pllv3(IMX_PLLV3_SYS, "pll1_arm", "pll1_arm_ref_sel", + base + 0x0, 0x7f)); + clk_dm(IMXRT1050_CLK_PLL2_SYS, + imx_clk_pllv3(IMX_PLLV3_GENERIC, "pll2_sys", "pll2_sys_ref_sel", + base + 0x30, 0x1)); + clk_dm(IMXRT1050_CLK_PLL3_USB_OTG, + imx_clk_pllv3(IMX_PLLV3_USB, "pll3_usb_otg", + "pll3_usb_otg_ref_sel", + base + 0x10, 0x1)); + clk_dm(IMXRT1050_CLK_PLL5_VIDEO, + imx_clk_pllv3(IMX_PLLV3_AV, "pll5_video", "pll5_video_ref_sel", + base + 0xa0, 0x7f)); + + /* PLL bypass out */ + clk_dm(IMXRT1050_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(IMXRT1050_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(IMXRT1050_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(IMXRT1050_CLK_PLL5_BYPASS, + imx_clk_mux_flags("pll5_bypass", base + 0xa0, 16, 1, + pll5_bypass_sels, + ARRAY_SIZE(pll5_bypass_sels), + CLK_SET_RATE_PARENT)); + + clk_dm(IMXRT1050_CLK_VIDEO_POST_DIV_SEL, + imx_clk_divider("video_post_div_sel", "pll5_video", + base + 0xa0, 19, 2)); + clk_dm(IMXRT1050_CLK_VIDEO_DIV, + imx_clk_divider("video_div", "video_post_div_sel", + base + 0x170, 30, 2)); + + clk_dm(IMXRT1050_CLK_PLL3_80M, + imx_clk_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6)); + + clk_dm(IMXRT1050_CLK_PLL2_PFD0_352M, + imx_clk_pfd("pll2_pfd0_352m", "pll2_sys", base + 0x100, 0)); + clk_dm(IMXRT1050_CLK_PLL2_PFD1_594M, + imx_clk_pfd("pll2_pfd1_594m", "pll2_sys", base + 0x100, 1)); + clk_dm(IMXRT1050_CLK_PLL2_PFD2_396M, + imx_clk_pfd("pll2_pfd2_396m", "pll2_sys", base + 0x100, 2)); + clk_dm(IMXRT1050_CLK_PLL3_PFD1_664_62M, + imx_clk_pfd("pll3_pfd1_664_62m", "pll3_usb_otg", base + 0xf0, + 1)); + clk_dm(IMXRT1050_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(IMXRT1050_CLK_ARM_PODF, + imx_clk_divider("arm_podf", "pll1_arm", + base + 0x10, 0, 3)); + + clk_dm(IMXRT1050_CLK_PRE_PERIPH_SEL, + imx_clk_mux("pre_periph_sel", base + 0x18, 18, 2, + pre_periph_sels, ARRAY_SIZE(pre_periph_sels))); + clk_dm(IMXRT1050_CLK_PERIPH_SEL, + imx_clk_mux("periph_sel", base + 0x14, 25, 1, + periph_sels, ARRAY_SIZE(periph_sels))); + clk_dm(IMXRT1050_CLK_USDHC1_SEL, + imx_clk_mux("usdhc1_sel", base + 0x1c, 16, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT1050_CLK_USDHC2_SEL, + imx_clk_mux("usdhc2_sel", base + 0x1c, 17, 1, + usdhc_sels, ARRAY_SIZE(usdhc_sels))); + clk_dm(IMXRT1050_CLK_LPUART_SEL, + imx_clk_mux("lpuart_sel", base + 0x24, 6, 1, + lpuart_sels, ARRAY_SIZE(lpuart_sels))); + clk_dm(IMXRT1050_CLK_SEMC_ALT_SEL, + imx_clk_mux("semc_alt_sel", base + 0x14, 7, 1, + semc_alt_sels, ARRAY_SIZE(semc_alt_sels))); + clk_dm(IMXRT1050_CLK_SEMC_SEL, + imx_clk_mux("semc_sel", base + 0x14, 6, 1, + semc_sels, ARRAY_SIZE(semc_sels))); + clk_dm(IMXRT1050_CLK_LCDIF_SEL, + imx_clk_mux("lcdif_sel", base + 0x38, 15, 3, + lcdif_sels, ARRAY_SIZE(lcdif_sels))); + + clk_dm(IMXRT1050_CLK_AHB_PODF, + imx_clk_divider("ahb_podf", "periph_sel", + base + 0x14, 10, 3)); + clk_dm(IMXRT1050_CLK_USDHC1_PODF, + imx_clk_divider("usdhc1_podf", "usdhc1_sel", + base + 0x24, 11, 3)); + clk_dm(IMXRT1050_CLK_USDHC2_PODF, + imx_clk_divider("usdhc2_podf", "usdhc2_sel", + base + 0x24, 16, 3)); + clk_dm(IMXRT1050_CLK_LPUART_PODF, + imx_clk_divider("lpuart_podf", "lpuart_sel", + base + 0x24, 0, 6)); + clk_dm(IMXRT1050_CLK_SEMC_PODF, + imx_clk_divider("semc_podf", "semc_sel", + base + 0x14, 16, 3)); + clk_dm(IMXRT1050_CLK_LCDIF_PRED, + imx_clk_divider("lcdif_pred", "lcdif_sel", + base + 0x38, 12, 3)); + clk_dm(IMXRT1050_CLK_LCDIF_PODF, + imx_clk_divider("lcdif_podf", "lcdif_pred", + base + 0x18, 23, 3)); + + clk_dm(IMXRT1050_CLK_USDHC1, + imx_clk_gate2("usdhc1", "usdhc1_podf", base + 0x80, 2)); + clk_dm(IMXRT1050_CLK_USDHC2, + imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4)); + clk_dm(IMXRT1050_CLK_LPUART1, + imx_clk_gate2("lpuart1", "lpuart_podf", base + 0x7c, 24)); + clk_dm(IMXRT1050_CLK_SEMC, + imx_clk_gate2("semc", "semc_podf", base + 0x74, 4)); + clk_dm(IMXRT1050_CLK_LCDIF, + imx_clk_gate2("lcdif", "lcdif_podf", base + 0x70, 28)); + +#ifdef CONFIG_SPL_BUILD + struct clk *clk, *clk1; + + /* 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); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT1050_CLK_PLL1_ARM, &clk); + clk_enable(clk); + clk_set_rate(clk, 1056000000UL); + + clk_get_by_id(IMXRT1050_CLK_PLL1_BYPASS, &clk1); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT1050_CLK_SEMC_SEL, &clk1); + clk_get_by_id(IMXRT1050_CLK_SEMC_ALT_SEL, &clk); + clk_set_parent(clk1, clk); + + clk_get_by_id(IMXRT1050_CLK_PLL2_SYS, &clk); + clk_enable(clk); + clk_set_rate(clk, 528000000UL); + + clk_get_by_id(IMXRT1050_CLK_PLL2_BYPASS, &clk1); + clk_set_parent(clk1, clk); + + /* Configure PLL3_USB_OTG to 480MHz */ + clk_get_by_id(IMXRT1050_CLK_PLL3_USB_OTG, &clk); + clk_enable(clk); + clk_set_rate(clk, 480000000UL); + + clk_get_by_id(IMXRT1050_CLK_PLL3_BYPASS, &clk1); + clk_set_parent(clk1, clk); + +#endif + + return 0; +} + +static const struct udevice_id imxrt1050_clk_ids[] = { + { .compatible = "fsl,imxrt1050-ccm" }, + { }, +}; + +U_BOOT_DRIVER(imxrt1050_clk) = { + .name = "clk_imxrt1050", + .id = UCLASS_CLK, + .of_match = imxrt1050_clk_ids, + .ops = &imxrt1050_clk_ops, + .probe = imxrt1050_clk_probe, + .flags = DM_FLAG_PRE_RELOC, +}; |