1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2018 NXP 4 * Dong Aisheng <aisheng.dong@nxp.com> 5 */ 6 7 #include <linux/clk-provider.h> 8 #include <linux/err.h> 9 #include <linux/io.h> 10 #include <linux/module.h> 11 #include <linux/of.h> 12 #include <linux/platform_device.h> 13 #include <linux/slab.h> 14 15 #include "clk-scu.h" 16 17 #include <dt-bindings/clock/imx8-clock.h> 18 #include <dt-bindings/firmware/imx/rsrc.h> 19 20 static const char *dc0_sels[] = { 21 "clk_dummy", 22 "clk_dummy", 23 "dc0_pll0_clk", 24 "dc0_pll1_clk", 25 "dc0_bypass0_clk", 26 }; 27 28 static int imx8qxp_clk_probe(struct platform_device *pdev) 29 { 30 struct device_node *ccm_node = pdev->dev.of_node; 31 struct clk_hw_onecell_data *clk_data; 32 struct clk_hw **clks; 33 u32 clk_cells; 34 int ret, i; 35 36 ret = imx_clk_scu_init(ccm_node); 37 if (ret) 38 return ret; 39 40 clk_data = devm_kzalloc(&pdev->dev, struct_size(clk_data, hws, 41 IMX_SCU_CLK_END), GFP_KERNEL); 42 if (!clk_data) 43 return -ENOMEM; 44 45 if (of_property_read_u32(ccm_node, "#clock-cells", &clk_cells)) 46 return -EINVAL; 47 48 clk_data->num = IMX_SCU_CLK_END; 49 clks = clk_data->hws; 50 51 /* Fixed clocks */ 52 clks[IMX_CLK_DUMMY] = clk_hw_register_fixed_rate(NULL, "dummy", NULL, 0, 0); 53 clks[IMX_ADMA_IPG_CLK_ROOT] = clk_hw_register_fixed_rate(NULL, "dma_ipg_clk_root", NULL, 0, 120000000); 54 clks[IMX_CONN_AXI_CLK_ROOT] = clk_hw_register_fixed_rate(NULL, "conn_axi_clk_root", NULL, 0, 333333333); 55 clks[IMX_CONN_AHB_CLK_ROOT] = clk_hw_register_fixed_rate(NULL, "conn_ahb_clk_root", NULL, 0, 166666666); 56 clks[IMX_CONN_IPG_CLK_ROOT] = clk_hw_register_fixed_rate(NULL, "conn_ipg_clk_root", NULL, 0, 83333333); 57 clks[IMX_DC_AXI_EXT_CLK] = clk_hw_register_fixed_rate(NULL, "dc_axi_ext_clk_root", NULL, 0, 800000000); 58 clks[IMX_DC_AXI_INT_CLK] = clk_hw_register_fixed_rate(NULL, "dc_axi_int_clk_root", NULL, 0, 400000000); 59 clks[IMX_DC_CFG_CLK] = clk_hw_register_fixed_rate(NULL, "dc_cfg_clk_root", NULL, 0, 100000000); 60 clks[IMX_MIPI_IPG_CLK] = clk_hw_register_fixed_rate(NULL, "mipi_ipg_clk_root", NULL, 0, 120000000); 61 clks[IMX_IMG_AXI_CLK] = clk_hw_register_fixed_rate(NULL, "img_axi_clk_root", NULL, 0, 400000000); 62 clks[IMX_IMG_IPG_CLK] = clk_hw_register_fixed_rate(NULL, "img_ipg_clk_root", NULL, 0, 200000000); 63 clks[IMX_IMG_PXL_CLK] = clk_hw_register_fixed_rate(NULL, "img_pxl_clk_root", NULL, 0, 600000000); 64 clks[IMX_HSIO_AXI_CLK] = clk_hw_register_fixed_rate(NULL, "hsio_axi_clk_root", NULL, 0, 400000000); 65 clks[IMX_HSIO_PER_CLK] = clk_hw_register_fixed_rate(NULL, "hsio_per_clk_root", NULL, 0, 133333333); 66 clks[IMX_LSIO_MEM_CLK] = clk_hw_register_fixed_rate(NULL, "lsio_mem_clk_root", NULL, 0, 200000000); 67 clks[IMX_LSIO_BUS_CLK] = clk_hw_register_fixed_rate(NULL, "lsio_bus_clk_root", NULL, 0, 100000000); 68 69 /* ARM core */ 70 clks[IMX_A35_CLK] = imx_clk_scu("a35_clk", IMX_SC_R_A35, IMX_SC_PM_CLK_CPU, clk_cells); 71 72 /* LSIO SS */ 73 clks[IMX_LSIO_PWM0_CLK] = imx_clk_scu("pwm0_clk", IMX_SC_R_PWM_0, IMX_SC_PM_CLK_PER, clk_cells); 74 clks[IMX_LSIO_PWM1_CLK] = imx_clk_scu("pwm1_clk", IMX_SC_R_PWM_1, IMX_SC_PM_CLK_PER, clk_cells); 75 clks[IMX_LSIO_PWM2_CLK] = imx_clk_scu("pwm2_clk", IMX_SC_R_PWM_2, IMX_SC_PM_CLK_PER, clk_cells); 76 clks[IMX_LSIO_PWM3_CLK] = imx_clk_scu("pwm3_clk", IMX_SC_R_PWM_3, IMX_SC_PM_CLK_PER, clk_cells); 77 clks[IMX_LSIO_PWM4_CLK] = imx_clk_scu("pwm4_clk", IMX_SC_R_PWM_4, IMX_SC_PM_CLK_PER, clk_cells); 78 clks[IMX_LSIO_PWM5_CLK] = imx_clk_scu("pwm5_clk", IMX_SC_R_PWM_5, IMX_SC_PM_CLK_PER, clk_cells); 79 clks[IMX_LSIO_PWM6_CLK] = imx_clk_scu("pwm6_clk", IMX_SC_R_PWM_6, IMX_SC_PM_CLK_PER, clk_cells); 80 clks[IMX_LSIO_PWM7_CLK] = imx_clk_scu("pwm7_clk", IMX_SC_R_PWM_7, IMX_SC_PM_CLK_PER, clk_cells); 81 clks[IMX_LSIO_GPT0_CLK] = imx_clk_scu("gpt0_clk", IMX_SC_R_GPT_0, IMX_SC_PM_CLK_PER, clk_cells); 82 clks[IMX_LSIO_GPT1_CLK] = imx_clk_scu("gpt1_clk", IMX_SC_R_GPT_1, IMX_SC_PM_CLK_PER, clk_cells); 83 clks[IMX_LSIO_GPT2_CLK] = imx_clk_scu("gpt2_clk", IMX_SC_R_GPT_2, IMX_SC_PM_CLK_PER, clk_cells); 84 clks[IMX_LSIO_GPT3_CLK] = imx_clk_scu("gpt3_clk", IMX_SC_R_GPT_3, IMX_SC_PM_CLK_PER, clk_cells); 85 clks[IMX_LSIO_GPT4_CLK] = imx_clk_scu("gpt4_clk", IMX_SC_R_GPT_4, IMX_SC_PM_CLK_PER, clk_cells); 86 clks[IMX_LSIO_FSPI0_CLK] = imx_clk_scu("fspi0_clk", IMX_SC_R_FSPI_0, IMX_SC_PM_CLK_PER, clk_cells); 87 clks[IMX_LSIO_FSPI1_CLK] = imx_clk_scu("fspi1_clk", IMX_SC_R_FSPI_1, IMX_SC_PM_CLK_PER, clk_cells); 88 89 /* ADMA SS */ 90 clks[IMX_ADMA_UART0_CLK] = imx_clk_scu("uart0_clk", IMX_SC_R_UART_0, IMX_SC_PM_CLK_PER, clk_cells); 91 clks[IMX_ADMA_UART1_CLK] = imx_clk_scu("uart1_clk", IMX_SC_R_UART_1, IMX_SC_PM_CLK_PER, clk_cells); 92 clks[IMX_ADMA_UART2_CLK] = imx_clk_scu("uart2_clk", IMX_SC_R_UART_2, IMX_SC_PM_CLK_PER, clk_cells); 93 clks[IMX_ADMA_UART3_CLK] = imx_clk_scu("uart3_clk", IMX_SC_R_UART_3, IMX_SC_PM_CLK_PER, clk_cells); 94 clks[IMX_ADMA_SPI0_CLK] = imx_clk_scu("spi0_clk", IMX_SC_R_SPI_0, IMX_SC_PM_CLK_PER, clk_cells); 95 clks[IMX_ADMA_SPI1_CLK] = imx_clk_scu("spi1_clk", IMX_SC_R_SPI_1, IMX_SC_PM_CLK_PER, clk_cells); 96 clks[IMX_ADMA_SPI2_CLK] = imx_clk_scu("spi2_clk", IMX_SC_R_SPI_2, IMX_SC_PM_CLK_PER, clk_cells); 97 clks[IMX_ADMA_SPI3_CLK] = imx_clk_scu("spi3_clk", IMX_SC_R_SPI_3, IMX_SC_PM_CLK_PER, clk_cells); 98 clks[IMX_ADMA_CAN0_CLK] = imx_clk_scu("can0_clk", IMX_SC_R_CAN_0, IMX_SC_PM_CLK_PER, clk_cells); 99 clks[IMX_ADMA_I2C0_CLK] = imx_clk_scu("i2c0_clk", IMX_SC_R_I2C_0, IMX_SC_PM_CLK_PER, clk_cells); 100 clks[IMX_ADMA_I2C1_CLK] = imx_clk_scu("i2c1_clk", IMX_SC_R_I2C_1, IMX_SC_PM_CLK_PER, clk_cells); 101 clks[IMX_ADMA_I2C2_CLK] = imx_clk_scu("i2c2_clk", IMX_SC_R_I2C_2, IMX_SC_PM_CLK_PER, clk_cells); 102 clks[IMX_ADMA_I2C3_CLK] = imx_clk_scu("i2c3_clk", IMX_SC_R_I2C_3, IMX_SC_PM_CLK_PER, clk_cells); 103 clks[IMX_ADMA_FTM0_CLK] = imx_clk_scu("ftm0_clk", IMX_SC_R_FTM_0, IMX_SC_PM_CLK_PER, clk_cells); 104 clks[IMX_ADMA_FTM1_CLK] = imx_clk_scu("ftm1_clk", IMX_SC_R_FTM_1, IMX_SC_PM_CLK_PER, clk_cells); 105 clks[IMX_ADMA_ADC0_CLK] = imx_clk_scu("adc0_clk", IMX_SC_R_ADC_0, IMX_SC_PM_CLK_PER, clk_cells); 106 clks[IMX_ADMA_PWM_CLK] = imx_clk_scu("pwm_clk", IMX_SC_R_LCD_0_PWM_0, IMX_SC_PM_CLK_PER, clk_cells); 107 clks[IMX_ADMA_LCD_CLK] = imx_clk_scu("lcd_clk", IMX_SC_R_LCD_0, IMX_SC_PM_CLK_PER, clk_cells); 108 109 /* Connectivity */ 110 clks[IMX_CONN_SDHC0_CLK] = imx_clk_scu("sdhc0_clk", IMX_SC_R_SDHC_0, IMX_SC_PM_CLK_PER, clk_cells); 111 clks[IMX_CONN_SDHC1_CLK] = imx_clk_scu("sdhc1_clk", IMX_SC_R_SDHC_1, IMX_SC_PM_CLK_PER, clk_cells); 112 clks[IMX_CONN_SDHC2_CLK] = imx_clk_scu("sdhc2_clk", IMX_SC_R_SDHC_2, IMX_SC_PM_CLK_PER, clk_cells); 113 clks[IMX_CONN_ENET0_ROOT_CLK] = imx_clk_scu("enet0_clk", IMX_SC_R_ENET_0, IMX_SC_PM_CLK_PER, clk_cells); 114 clks[IMX_CONN_ENET0_BYPASS_CLK] = imx_clk_scu("enet0_bypass_clk", IMX_SC_R_ENET_0, IMX_SC_PM_CLK_BYPASS, clk_cells); 115 clks[IMX_CONN_ENET0_RGMII_CLK] = imx_clk_scu("enet0_rgmii_clk", IMX_SC_R_ENET_0, IMX_SC_PM_CLK_MISC0, clk_cells); 116 clks[IMX_CONN_ENET1_ROOT_CLK] = imx_clk_scu("enet1_clk", IMX_SC_R_ENET_1, IMX_SC_PM_CLK_PER, clk_cells); 117 clks[IMX_CONN_ENET1_BYPASS_CLK] = imx_clk_scu("enet1_bypass_clk", IMX_SC_R_ENET_1, IMX_SC_PM_CLK_BYPASS, clk_cells); 118 clks[IMX_CONN_ENET1_RGMII_CLK] = imx_clk_scu("enet1_rgmii_clk", IMX_SC_R_ENET_1, IMX_SC_PM_CLK_MISC0, clk_cells); 119 clks[IMX_CONN_GPMI_BCH_IO_CLK] = imx_clk_scu("gpmi_io_clk", IMX_SC_R_NAND, IMX_SC_PM_CLK_MST_BUS, clk_cells); 120 clks[IMX_CONN_GPMI_BCH_CLK] = imx_clk_scu("gpmi_bch_clk", IMX_SC_R_NAND, IMX_SC_PM_CLK_PER, clk_cells); 121 clks[IMX_CONN_USB2_ACLK] = imx_clk_scu("usb3_aclk_div", IMX_SC_R_USB_2, IMX_SC_PM_CLK_PER, clk_cells); 122 clks[IMX_CONN_USB2_BUS_CLK] = imx_clk_scu("usb3_bus_div", IMX_SC_R_USB_2, IMX_SC_PM_CLK_MST_BUS, clk_cells); 123 clks[IMX_CONN_USB2_LPM_CLK] = imx_clk_scu("usb3_lpm_div", IMX_SC_R_USB_2, IMX_SC_PM_CLK_MISC, clk_cells); 124 125 /* Display controller SS */ 126 clks[IMX_DC0_DISP0_CLK] = imx_clk_scu2("dc0_disp0_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC0, clk_cells); 127 clks[IMX_DC0_DISP1_CLK] = imx_clk_scu2("dc0_disp1_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC1, clk_cells); 128 clks[IMX_DC0_PLL0_CLK] = imx_clk_scu("dc0_pll0_clk", IMX_SC_R_DC_0_PLL_0, IMX_SC_PM_CLK_PLL, clk_cells); 129 clks[IMX_DC0_PLL1_CLK] = imx_clk_scu("dc0_pll1_clk", IMX_SC_R_DC_0_PLL_1, IMX_SC_PM_CLK_PLL, clk_cells); 130 clks[IMX_DC0_BYPASS0_CLK] = imx_clk_scu("dc0_bypass0_clk", IMX_SC_R_DC_0_VIDEO0, IMX_SC_PM_CLK_BYPASS, clk_cells); 131 clks[IMX_DC0_BYPASS1_CLK] = imx_clk_scu("dc0_bypass1_clk", IMX_SC_R_DC_0_VIDEO1, IMX_SC_PM_CLK_BYPASS, clk_cells); 132 133 /* MIPI-LVDS SS */ 134 clks[IMX_MIPI0_LVDS_PIXEL_CLK] = imx_clk_scu("mipi0_lvds_pixel_clk", IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_MISC2, clk_cells); 135 clks[IMX_MIPI0_LVDS_BYPASS_CLK] = imx_clk_scu("mipi0_lvds_bypass_clk", IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_BYPASS, clk_cells); 136 clks[IMX_MIPI0_LVDS_PHY_CLK] = imx_clk_scu("mipi0_lvds_phy_clk", IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_MISC3, clk_cells); 137 clks[IMX_MIPI0_I2C0_CLK] = imx_clk_scu("mipi0_i2c0_clk", IMX_SC_R_MIPI_0_I2C_0, IMX_SC_PM_CLK_MISC2, clk_cells); 138 clks[IMX_MIPI0_I2C1_CLK] = imx_clk_scu("mipi0_i2c1_clk", IMX_SC_R_MIPI_0_I2C_1, IMX_SC_PM_CLK_MISC2, clk_cells); 139 clks[IMX_MIPI0_PWM0_CLK] = imx_clk_scu("mipi0_pwm0_clk", IMX_SC_R_MIPI_0_PWM_0, IMX_SC_PM_CLK_PER, clk_cells); 140 clks[IMX_MIPI1_LVDS_PIXEL_CLK] = imx_clk_scu("mipi1_lvds_pixel_clk", IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_MISC2, clk_cells); 141 clks[IMX_MIPI1_LVDS_BYPASS_CLK] = imx_clk_scu("mipi1_lvds_bypass_clk", IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_BYPASS, clk_cells); 142 clks[IMX_MIPI1_LVDS_PHY_CLK] = imx_clk_scu("mipi1_lvds_phy_clk", IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_MISC3, clk_cells); 143 clks[IMX_MIPI1_I2C0_CLK] = imx_clk_scu("mipi1_i2c0_clk", IMX_SC_R_MIPI_1_I2C_0, IMX_SC_PM_CLK_MISC2, clk_cells); 144 clks[IMX_MIPI1_I2C1_CLK] = imx_clk_scu("mipi1_i2c1_clk", IMX_SC_R_MIPI_1_I2C_1, IMX_SC_PM_CLK_MISC2, clk_cells); 145 clks[IMX_MIPI1_PWM0_CLK] = imx_clk_scu("mipi1_pwm0_clk", IMX_SC_R_MIPI_1_PWM_0, IMX_SC_PM_CLK_PER, clk_cells); 146 147 /* MIPI CSI SS */ 148 clks[IMX_CSI0_CORE_CLK] = imx_clk_scu("mipi_csi0_core_clk", IMX_SC_R_CSI_0, IMX_SC_PM_CLK_PER, clk_cells); 149 clks[IMX_CSI0_ESC_CLK] = imx_clk_scu("mipi_csi0_esc_clk", IMX_SC_R_CSI_0, IMX_SC_PM_CLK_MISC, clk_cells); 150 clks[IMX_CSI0_I2C0_CLK] = imx_clk_scu("mipi_csi0_i2c0_clk", IMX_SC_R_CSI_0_I2C_0, IMX_SC_PM_CLK_PER, clk_cells); 151 clks[IMX_CSI0_PWM0_CLK] = imx_clk_scu("mipi_csi0_pwm0_clk", IMX_SC_R_CSI_0_PWM_0, IMX_SC_PM_CLK_PER, clk_cells); 152 153 /* GPU SS */ 154 clks[IMX_GPU0_CORE_CLK] = imx_clk_scu("gpu_core0_clk", IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_PER, clk_cells); 155 clks[IMX_GPU0_SHADER_CLK] = imx_clk_scu("gpu_shader0_clk", IMX_SC_R_GPU_0_PID0, IMX_SC_PM_CLK_MISC, clk_cells); 156 157 for (i = 0; i < clk_data->num; i++) { 158 if (IS_ERR(clks[i])) 159 pr_warn("i.MX clk %u: register failed with %ld\n", 160 i, PTR_ERR(clks[i])); 161 } 162 163 if (clk_cells == 2) { 164 ret = of_clk_add_hw_provider(ccm_node, imx_scu_of_clk_src_get, imx_scu_clks); 165 if (ret) 166 imx_clk_scu_unregister(); 167 } else { 168 /* 169 * legacy binding code path doesn't unregister here because 170 * it will be removed later. 171 */ 172 ret = of_clk_add_hw_provider(ccm_node, of_clk_hw_onecell_get, clk_data); 173 } 174 175 return ret; 176 } 177 178 static const struct of_device_id imx8qxp_match[] = { 179 { .compatible = "fsl,scu-clk", }, 180 { .compatible = "fsl,imx8qxp-clk", }, 181 { /* sentinel */ } 182 }; 183 184 static struct platform_driver imx8qxp_clk_driver = { 185 .driver = { 186 .name = "imx8qxp-clk", 187 .of_match_table = imx8qxp_match, 188 .suppress_bind_attrs = true, 189 }, 190 .probe = imx8qxp_clk_probe, 191 }; 192 builtin_platform_driver(imx8qxp_clk_driver); 193 194 MODULE_AUTHOR("Aisheng Dong <aisheng.dong@nxp.com>"); 195 MODULE_DESCRIPTION("NXP i.MX8QXP clock driver"); 196 MODULE_LICENSE("GPL v2"); 197