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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2016 Linaro.4 * Viresh Kumar <viresh.kumar@linaro.org>5 */6 7#include <linux/err.h>8#include <linux/module.h>9#include <linux/of.h>10#include <linux/platform_device.h>11 12#include "cpufreq-dt.h"13 14/*15 * Machines for which the cpufreq device is *always* created, mostly used for16 * platforms using "operating-points" (V1) property.17 */18static const struct of_device_id allowlist[] __initconst = {19 { .compatible = "allwinner,sun4i-a10", },20 { .compatible = "allwinner,sun5i-a10s", },21 { .compatible = "allwinner,sun5i-a13", },22 { .compatible = "allwinner,sun5i-r8", },23 { .compatible = "allwinner,sun6i-a31", },24 { .compatible = "allwinner,sun6i-a31s", },25 { .compatible = "allwinner,sun7i-a20", },26 { .compatible = "allwinner,sun8i-a23", },27 { .compatible = "allwinner,sun8i-a83t", },28 { .compatible = "allwinner,sun8i-h3", },29 30 { .compatible = "apm,xgene-shadowcat", },31 32 { .compatible = "arm,integrator-ap", },33 { .compatible = "arm,integrator-cp", },34 35 { .compatible = "hisilicon,hi3660", },36 37 { .compatible = "fsl,imx27", },38 { .compatible = "fsl,imx51", },39 { .compatible = "fsl,imx53", },40 41 { .compatible = "marvell,berlin", },42 { .compatible = "marvell,pxa250", },43 { .compatible = "marvell,pxa270", },44 45 { .compatible = "samsung,exynos3250", },46 { .compatible = "samsung,exynos4210", },47 { .compatible = "samsung,exynos5250", },48#ifndef CONFIG_BL_SWITCHER49 { .compatible = "samsung,exynos5800", },50#endif51 52 { .compatible = "renesas,emev2", },53 { .compatible = "renesas,r7s72100", },54 { .compatible = "renesas,r8a73a4", },55 { .compatible = "renesas,r8a7740", },56 { .compatible = "renesas,r8a7742", },57 { .compatible = "renesas,r8a7743", },58 { .compatible = "renesas,r8a7744", },59 { .compatible = "renesas,r8a7745", },60 { .compatible = "renesas,r8a7778", },61 { .compatible = "renesas,r8a7779", },62 { .compatible = "renesas,r8a7790", },63 { .compatible = "renesas,r8a7791", },64 { .compatible = "renesas,r8a7792", },65 { .compatible = "renesas,r8a7793", },66 { .compatible = "renesas,r8a7794", },67 { .compatible = "renesas,sh73a0", },68 69 { .compatible = "rockchip,rk2928", },70 { .compatible = "rockchip,rk3036", },71 { .compatible = "rockchip,rk3066a", },72 { .compatible = "rockchip,rk3066b", },73 { .compatible = "rockchip,rk3188", },74 { .compatible = "rockchip,rk3228", },75 { .compatible = "rockchip,rk3288", },76 { .compatible = "rockchip,rk3328", },77 { .compatible = "rockchip,rk3366", },78 { .compatible = "rockchip,rk3368", },79 { .compatible = "rockchip,rk3399",80 .data = &(struct cpufreq_dt_platform_data)81 { .have_governor_per_policy = true, },82 },83 84 { .compatible = "st-ericsson,u8500", },85 { .compatible = "st-ericsson,u8540", },86 { .compatible = "st-ericsson,u9500", },87 { .compatible = "st-ericsson,u9540", },88 89 { .compatible = "starfive,jh7110", },90 91 { .compatible = "ti,omap2", },92 { .compatible = "ti,omap4", },93 { .compatible = "ti,omap5", },94 95 { .compatible = "xlnx,zynq-7000", },96 { .compatible = "xlnx,zynqmp", },97 98 { }99};100 101/*102 * Machines for which the cpufreq device is *not* created, mostly used for103 * platforms using "operating-points-v2" property.104 */105static const struct of_device_id blocklist[] __initconst = {106 { .compatible = "allwinner,sun50i-h6", },107 { .compatible = "allwinner,sun50i-h616", },108 { .compatible = "allwinner,sun50i-h618", },109 { .compatible = "allwinner,sun50i-h700", },110 111 { .compatible = "apple,arm-platform", },112 113 { .compatible = "arm,vexpress", },114 115 { .compatible = "calxeda,highbank", },116 { .compatible = "calxeda,ecx-2000", },117 118 { .compatible = "fsl,imx7ulp", },119 { .compatible = "fsl,imx7d", },120 { .compatible = "fsl,imx7s", },121 { .compatible = "fsl,imx8mq", },122 { .compatible = "fsl,imx8mm", },123 { .compatible = "fsl,imx8mn", },124 { .compatible = "fsl,imx8mp", },125 126 { .compatible = "marvell,armadaxp", },127 128 { .compatible = "mediatek,mt2701", },129 { .compatible = "mediatek,mt2712", },130 { .compatible = "mediatek,mt7622", },131 { .compatible = "mediatek,mt7623", },132 { .compatible = "mediatek,mt8167", },133 { .compatible = "mediatek,mt817x", },134 { .compatible = "mediatek,mt8173", },135 { .compatible = "mediatek,mt8176", },136 { .compatible = "mediatek,mt8183", },137 { .compatible = "mediatek,mt8186", },138 { .compatible = "mediatek,mt8365", },139 { .compatible = "mediatek,mt8516", },140 141 { .compatible = "nvidia,tegra20", },142 { .compatible = "nvidia,tegra30", },143 { .compatible = "nvidia,tegra124", },144 { .compatible = "nvidia,tegra210", },145 { .compatible = "nvidia,tegra234", },146 147 { .compatible = "qcom,apq8096", },148 { .compatible = "qcom,msm8909", },149 { .compatible = "qcom,msm8996", },150 { .compatible = "qcom,msm8998", },151 { .compatible = "qcom,qcm2290", },152 { .compatible = "qcom,qcm6490", },153 { .compatible = "qcom,qcs404", },154 { .compatible = "qcom,qdu1000", },155 { .compatible = "qcom,sa8155p" },156 { .compatible = "qcom,sa8540p" },157 { .compatible = "qcom,sa8775p" },158 { .compatible = "qcom,sc7180", },159 { .compatible = "qcom,sc7280", },160 { .compatible = "qcom,sc8180x", },161 { .compatible = "qcom,sc8280xp", },162 { .compatible = "qcom,sdm670", },163 { .compatible = "qcom,sdm845", },164 { .compatible = "qcom,sdx75", },165 { .compatible = "qcom,sm6115", },166 { .compatible = "qcom,sm6350", },167 { .compatible = "qcom,sm6375", },168 { .compatible = "qcom,sm7225", },169 { .compatible = "qcom,sm7325", },170 { .compatible = "qcom,sm8150", },171 { .compatible = "qcom,sm8250", },172 { .compatible = "qcom,sm8350", },173 { .compatible = "qcom,sm8450", },174 { .compatible = "qcom,sm8550", },175 176 { .compatible = "st,stih407", },177 { .compatible = "st,stih410", },178 { .compatible = "st,stih418", },179 180 { .compatible = "ti,am33xx", },181 { .compatible = "ti,am43", },182 { .compatible = "ti,dra7", },183 { .compatible = "ti,omap3", },184 { .compatible = "ti,am625", },185 { .compatible = "ti,am62a7", },186 { .compatible = "ti,am62p5", },187 188 { .compatible = "qcom,ipq5332", },189 { .compatible = "qcom,ipq6018", },190 { .compatible = "qcom,ipq8064", },191 { .compatible = "qcom,ipq8074", },192 { .compatible = "qcom,ipq9574", },193 { .compatible = "qcom,apq8064", },194 { .compatible = "qcom,msm8974", },195 { .compatible = "qcom,msm8960", },196 197 { }198};199 200static bool __init cpu0_node_has_opp_v2_prop(void)201{202 struct device_node *np __free(device_node) = of_cpu_device_node_get(0);203 bool ret = false;204 205 if (of_property_present(np, "operating-points-v2"))206 ret = true;207 208 return ret;209}210 211static int __init cpufreq_dt_platdev_init(void)212{213 struct device_node *np __free(device_node) = of_find_node_by_path("/");214 const struct of_device_id *match;215 const void *data = NULL;216 217 if (!np)218 return -ENODEV;219 220 match = of_match_node(allowlist, np);221 if (match) {222 data = match->data;223 goto create_pdev;224 }225 226 if (cpu0_node_has_opp_v2_prop() && !of_match_node(blocklist, np))227 goto create_pdev;228 229 return -ENODEV;230 231create_pdev:232 return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt",233 -1, data,234 sizeof(struct cpufreq_dt_platform_data)));235}236core_initcall(cpufreq_dt_platdev_init);237MODULE_DESCRIPTION("Generic DT based cpufreq platdev driver");238MODULE_LICENSE("GPL");239