1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* 3 * Copyright (C) 2021 4 * Author(s): 5 * Jesse Taube <Mr.Bossman075@gmail.com> 6 * Giulio Benetti <giulio.benetti@benettiengineering.com> 7 */ 8 #include <linux/clk.h> 9 #include <linux/of_address.h> 10 #include <linux/of_irq.h> 11 #include <linux/platform_device.h> 12 #include <dt-bindings/clock/imxrt1050-clock.h> 13 14 #include "clk.h" 15 16 static const char * const pll_ref_sels[] = {"osc", "dummy", }; 17 static const char * const per_sels[] = {"ipg_pdof", "osc", }; 18 static const char * const pll1_bypass_sels[] = {"pll1_arm", "pll1_arm_ref_sel", }; 19 static const char * const pll2_bypass_sels[] = {"pll2_sys", "pll2_sys_ref_sel", }; 20 static const char * const pll3_bypass_sels[] = {"pll3_usb_otg", "pll3_usb_otg_ref_sel", }; 21 static const char * const pll5_bypass_sels[] = {"pll5_video", "pll5_video_ref_sel", }; 22 static const char *const pre_periph_sels[] = { 23 "pll2_sys", "pll2_pfd2_396m", "pll2_pfd0_352m", "arm_podf", }; 24 static const char *const periph_sels[] = { "pre_periph_sel", "todo", }; 25 static const char *const usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; 26 static const char *const lpuart_sels[] = { "pll3_80m", "osc", }; 27 static const char *const lcdif_sels[] = { 28 "pll2_sys", "pll3_pfd3_454_74m", "pll5_video", "pll2_pfd0_352m", 29 "pll2_pfd1_594m", "pll3_pfd1_664_62m", }; 30 static const char *const semc_alt_sels[] = { "pll2_pfd2_396m", "pll3_pfd1_664_62m", }; 31 static const char *const semc_sels[] = { "periph_sel", "semc_alt_sel", }; 32 33 static struct clk_hw **hws; 34 static struct clk_hw_onecell_data *clk_hw_data; 35 36 static int imxrt1050_clocks_probe(struct platform_device *pdev) 37 { 38 void __iomem *ccm_base; 39 void __iomem *pll_base; 40 struct device *dev = &pdev->dev; 41 struct device_node *np = dev->of_node; 42 struct device_node *anp; 43 int ret; 44 45 clk_hw_data = kzalloc(struct_size(clk_hw_data, hws, 46 IMXRT1050_CLK_END), GFP_KERNEL); 47 if (WARN_ON(!clk_hw_data)) 48 return -ENOMEM; 49 50 clk_hw_data->num = IMXRT1050_CLK_END; 51 hws = clk_hw_data->hws; 52 53 hws[IMXRT1050_CLK_OSC] = imx_obtain_fixed_clk_hw(np, "osc"); 54 55 anp = of_find_compatible_node(NULL, NULL, "fsl,imxrt-anatop"); 56 pll_base = of_iomap(anp, 0); 57 of_node_put(anp); 58 if (WARN_ON(!pll_base)) 59 return -ENOMEM; 60 61 /* Anatop clocks */ 62 hws[IMXRT1050_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0UL); 63 64 hws[IMXRT1050_CLK_PLL1_REF_SEL] = imx_clk_hw_mux("pll1_arm_ref_sel", 65 pll_base + 0x0, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); 66 hws[IMXRT1050_CLK_PLL2_REF_SEL] = imx_clk_hw_mux("pll2_sys_ref_sel", 67 pll_base + 0x30, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); 68 hws[IMXRT1050_CLK_PLL3_REF_SEL] = imx_clk_hw_mux("pll3_usb_otg_ref_sel", 69 pll_base + 0x10, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); 70 hws[IMXRT1050_CLK_PLL5_REF_SEL] = imx_clk_hw_mux("pll5_video_ref_sel", 71 pll_base + 0xa0, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); 72 73 hws[IMXRT1050_CLK_PLL1_ARM] = imx_clk_hw_pllv3(IMX_PLLV3_SYS, "pll1_arm", 74 "pll1_arm_ref_sel", pll_base + 0x0, 0x7f); 75 hws[IMXRT1050_CLK_PLL2_SYS] = imx_clk_hw_pllv3(IMX_PLLV3_GENERIC, "pll2_sys", 76 "pll2_sys_ref_sel", pll_base + 0x30, 0x1); 77 hws[IMXRT1050_CLK_PLL3_USB_OTG] = imx_clk_hw_pllv3(IMX_PLLV3_USB, "pll3_usb_otg", 78 "pll3_usb_otg_ref_sel", pll_base + 0x10, 0x1); 79 hws[IMXRT1050_CLK_PLL5_VIDEO] = imx_clk_hw_pllv3(IMX_PLLV3_AV, "pll5_video", 80 "pll5_video_ref_sel", pll_base + 0xa0, 0x7f); 81 82 /* PLL bypass out */ 83 hws[IMXRT1050_CLK_PLL1_BYPASS] = imx_clk_hw_mux_flags("pll1_bypass", pll_base + 0x0, 16, 1, 84 pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT); 85 hws[IMXRT1050_CLK_PLL2_BYPASS] = imx_clk_hw_mux_flags("pll2_bypass", pll_base + 0x30, 16, 1, 86 pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT); 87 hws[IMXRT1050_CLK_PLL3_BYPASS] = imx_clk_hw_mux_flags("pll3_bypass", pll_base + 0x10, 16, 1, 88 pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT); 89 hws[IMXRT1050_CLK_PLL5_BYPASS] = imx_clk_hw_mux_flags("pll5_bypass", pll_base + 0xa0, 16, 1, 90 pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT); 91 92 hws[IMXRT1050_CLK_VIDEO_POST_DIV_SEL] = imx_clk_hw_divider("video_post_div_sel", 93 "pll5_video", pll_base + 0xa0, 19, 2); 94 hws[IMXRT1050_CLK_VIDEO_DIV] = imx_clk_hw_divider("video_div", 95 "video_post_div_sel", pll_base + 0x170, 30, 2); 96 97 hws[IMXRT1050_CLK_PLL3_80M] = imx_clk_hw_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6); 98 99 hws[IMXRT1050_CLK_PLL2_PFD0_352M] = imx_clk_hw_pfd("pll2_pfd0_352m", "pll2_sys", pll_base + 0x100, 0); 100 hws[IMXRT1050_CLK_PLL2_PFD1_594M] = imx_clk_hw_pfd("pll2_pfd1_594m", "pll2_sys", pll_base + 0x100, 1); 101 hws[IMXRT1050_CLK_PLL2_PFD2_396M] = imx_clk_hw_pfd("pll2_pfd2_396m", "pll2_sys", pll_base + 0x100, 2); 102 hws[IMXRT1050_CLK_PLL3_PFD1_664_62M] = imx_clk_hw_pfd("pll3_pfd1_664_62m", "pll3_usb_otg", pll_base + 0xf0, 1); 103 hws[IMXRT1050_CLK_PLL3_PFD3_454_74M] = imx_clk_hw_pfd("pll3_pfd3_454_74m", "pll3_usb_otg", pll_base + 0xf0, 3); 104 105 /* CCM clocks */ 106 ccm_base = devm_platform_ioremap_resource(pdev, 0); 107 if (WARN_ON(IS_ERR(ccm_base))) 108 return PTR_ERR(ccm_base); 109 110 hws[IMXRT1050_CLK_ARM_PODF] = imx_clk_hw_divider("arm_podf", "pll1_arm", ccm_base + 0x10, 0, 3); 111 hws[IMXRT1050_CLK_PRE_PERIPH_SEL] = imx_clk_hw_mux("pre_periph_sel", ccm_base + 0x18, 18, 2, 112 pre_periph_sels, ARRAY_SIZE(pre_periph_sels)); 113 hws[IMXRT1050_CLK_PERIPH_SEL] = imx_clk_hw_mux("periph_sel", ccm_base + 0x14, 25, 1, 114 periph_sels, ARRAY_SIZE(periph_sels)); 115 hws[IMXRT1050_CLK_USDHC1_SEL] = imx_clk_hw_mux("usdhc1_sel", ccm_base + 0x1c, 16, 1, 116 usdhc_sels, ARRAY_SIZE(usdhc_sels)); 117 hws[IMXRT1050_CLK_USDHC2_SEL] = imx_clk_hw_mux("usdhc2_sel", ccm_base + 0x1c, 17, 1, 118 usdhc_sels, ARRAY_SIZE(usdhc_sels)); 119 hws[IMXRT1050_CLK_LPUART_SEL] = imx_clk_hw_mux("lpuart_sel", ccm_base + 0x24, 6, 1, 120 lpuart_sels, ARRAY_SIZE(lpuart_sels)); 121 hws[IMXRT1050_CLK_LCDIF_SEL] = imx_clk_hw_mux("lcdif_sel", ccm_base + 0x38, 15, 3, 122 lcdif_sels, ARRAY_SIZE(lcdif_sels)); 123 hws[IMXRT1050_CLK_PER_CLK_SEL] = imx_clk_hw_mux("per_sel", ccm_base + 0x1C, 6, 1, 124 per_sels, ARRAY_SIZE(per_sels)); 125 hws[IMXRT1050_CLK_SEMC_ALT_SEL] = imx_clk_hw_mux("semc_alt_sel", ccm_base + 0x14, 7, 1, 126 semc_alt_sels, ARRAY_SIZE(semc_alt_sels)); 127 hws[IMXRT1050_CLK_SEMC_SEL] = imx_clk_hw_mux_flags("semc_sel", ccm_base + 0x14, 6, 1, 128 semc_sels, ARRAY_SIZE(semc_sels), CLK_IS_CRITICAL); 129 130 hws[IMXRT1050_CLK_AHB_PODF] = imx_clk_hw_divider("ahb", "periph_sel", ccm_base + 0x14, 10, 3); 131 hws[IMXRT1050_CLK_IPG_PDOF] = imx_clk_hw_divider("ipg", "ahb", ccm_base + 0x14, 8, 2); 132 hws[IMXRT1050_CLK_PER_PDOF] = imx_clk_hw_divider("per", "per_sel", ccm_base + 0x1C, 0, 5); 133 134 hws[IMXRT1050_CLK_USDHC1_PODF] = imx_clk_hw_divider("usdhc1_podf", "usdhc1_sel", ccm_base + 0x24, 11, 3); 135 hws[IMXRT1050_CLK_USDHC2_PODF] = imx_clk_hw_divider("usdhc2_podf", "usdhc2_sel", ccm_base + 0x24, 16, 3); 136 hws[IMXRT1050_CLK_LPUART_PODF] = imx_clk_hw_divider("lpuart_podf", "lpuart_sel", ccm_base + 0x24, 0, 6); 137 hws[IMXRT1050_CLK_LCDIF_PRED] = imx_clk_hw_divider("lcdif_pred", "lcdif_sel", ccm_base + 0x38, 12, 3); 138 hws[IMXRT1050_CLK_LCDIF_PODF] = imx_clk_hw_divider("lcdif_podf", "lcdif_pred", ccm_base + 0x18, 23, 3); 139 140 hws[IMXRT1050_CLK_USDHC1] = imx_clk_hw_gate2("usdhc1", "usdhc1_podf", ccm_base + 0x80, 2); 141 hws[IMXRT1050_CLK_USDHC2] = imx_clk_hw_gate2("usdhc2", "usdhc2_podf", ccm_base + 0x80, 4); 142 hws[IMXRT1050_CLK_LPUART1] = imx_clk_hw_gate2("lpuart1", "lpuart_podf", ccm_base + 0x7c, 24); 143 hws[IMXRT1050_CLK_LCDIF_APB] = imx_clk_hw_gate2("lcdif", "lcdif_podf", ccm_base + 0x74, 10); 144 hws[IMXRT1050_CLK_DMA] = imx_clk_hw_gate("dma", "ipg", ccm_base + 0x7C, 6); 145 hws[IMXRT1050_CLK_DMA_MUX] = imx_clk_hw_gate("dmamux0", "ipg", ccm_base + 0x7C, 7); 146 imx_check_clk_hws(hws, IMXRT1050_CLK_END); 147 148 ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data); 149 if (ret < 0) { 150 dev_err(dev, "Failed to register clks for i.MXRT1050.\n"); 151 imx_unregister_hw_clocks(hws, IMXRT1050_CLK_END); 152 } 153 return ret; 154 } 155 static const struct of_device_id imxrt1050_clk_of_match[] = { 156 { .compatible = "fsl,imxrt1050-ccm" }, 157 { /* Sentinel */ } 158 }; 159 MODULE_DEVICE_TABLE(of, imxrt1050_clk_of_match); 160 161 static struct platform_driver imxrt1050_clk_driver = { 162 .probe = imxrt1050_clocks_probe, 163 .driver = { 164 .name = "imxrt1050-ccm", 165 .of_match_table = imxrt1050_clk_of_match, 166 }, 167 }; 168 module_platform_driver(imxrt1050_clk_driver); 169