| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2016 Linaro. |
| * Viresh Kumar <viresh.kumar@linaro.org> |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/platform_device.h> |
| |
| #include "cpufreq-dt.h" |
| |
| /* |
| * Machines for which the cpufreq device is *always* created, mostly used for |
| * platforms using "operating-points" (V1) property. |
| */ |
| static const struct of_device_id whitelist[] __initconst = { |
| { .compatible = "allwinner,sun4i-a10", }, |
| { .compatible = "allwinner,sun5i-a10s", }, |
| { .compatible = "allwinner,sun5i-a13", }, |
| { .compatible = "allwinner,sun5i-r8", }, |
| { .compatible = "allwinner,sun6i-a31", }, |
| { .compatible = "allwinner,sun6i-a31s", }, |
| { .compatible = "allwinner,sun7i-a20", }, |
| { .compatible = "allwinner,sun8i-a23", }, |
| { .compatible = "allwinner,sun8i-a83t", }, |
| { .compatible = "allwinner,sun8i-h3", }, |
| |
| { .compatible = "apm,xgene-shadowcat", }, |
| |
| { .compatible = "arm,integrator-ap", }, |
| { .compatible = "arm,integrator-cp", }, |
| |
| { .compatible = "hisilicon,hi3660", }, |
| |
| { .compatible = "fsl,imx27", }, |
| { .compatible = "fsl,imx51", }, |
| { .compatible = "fsl,imx53", }, |
| |
| { .compatible = "marvell,berlin", }, |
| { .compatible = "marvell,pxa250", }, |
| { .compatible = "marvell,pxa270", }, |
| |
| { .compatible = "samsung,exynos3250", }, |
| { .compatible = "samsung,exynos4210", }, |
| { .compatible = "samsung,exynos5250", }, |
| #ifndef CONFIG_BL_SWITCHER |
| { .compatible = "samsung,exynos5800", }, |
| #endif |
| |
| { .compatible = "renesas,emev2", }, |
| { .compatible = "renesas,r7s72100", }, |
| { .compatible = "renesas,r8a73a4", }, |
| { .compatible = "renesas,r8a7740", }, |
| { .compatible = "renesas,r8a7742", }, |
| { .compatible = "renesas,r8a7743", }, |
| { .compatible = "renesas,r8a7744", }, |
| { .compatible = "renesas,r8a7745", }, |
| { .compatible = "renesas,r8a7778", }, |
| { .compatible = "renesas,r8a7779", }, |
| { .compatible = "renesas,r8a7790", }, |
| { .compatible = "renesas,r8a7791", }, |
| { .compatible = "renesas,r8a7792", }, |
| { .compatible = "renesas,r8a7793", }, |
| { .compatible = "renesas,r8a7794", }, |
| { .compatible = "renesas,sh73a0", }, |
| |
| { .compatible = "rockchip,rk2928", }, |
| { .compatible = "rockchip,rk3036", }, |
| { .compatible = "rockchip,rk3066a", }, |
| { .compatible = "rockchip,rk3066b", }, |
| { .compatible = "rockchip,rk3188", }, |
| { .compatible = "rockchip,rk3228", }, |
| { .compatible = "rockchip,rk3288", }, |
| { .compatible = "rockchip,rk3328", }, |
| { .compatible = "rockchip,rk3366", }, |
| { .compatible = "rockchip,rk3368", }, |
| { .compatible = "rockchip,rk3399", |
| .data = &(struct cpufreq_dt_platform_data) |
| { .have_governor_per_policy = true, }, |
| }, |
| |
| { .compatible = "st-ericsson,u8500", }, |
| { .compatible = "st-ericsson,u8540", }, |
| { .compatible = "st-ericsson,u9500", }, |
| { .compatible = "st-ericsson,u9540", }, |
| |
| { .compatible = "ti,omap2", }, |
| { .compatible = "ti,omap4", }, |
| { .compatible = "ti,omap5", }, |
| |
| { .compatible = "xlnx,zynq-7000", }, |
| { .compatible = "xlnx,zynqmp", }, |
| |
| { } |
| }; |
| |
| /* |
| * Machines for which the cpufreq device is *not* created, mostly used for |
| * platforms using "operating-points-v2" property. |
| */ |
| static const struct of_device_id blacklist[] __initconst = { |
| { .compatible = "allwinner,sun50i-h6", }, |
| |
| { .compatible = "calxeda,highbank", }, |
| { .compatible = "calxeda,ecx-2000", }, |
| |
| { .compatible = "fsl,imx7ulp", }, |
| { .compatible = "fsl,imx7d", }, |
| { .compatible = "fsl,imx8mq", }, |
| { .compatible = "fsl,imx8mm", }, |
| { .compatible = "fsl,imx8mn", }, |
| { .compatible = "fsl,imx8mp", }, |
| |
| { .compatible = "marvell,armadaxp", }, |
| |
| { .compatible = "mediatek,mt2701", }, |
| { .compatible = "mediatek,mt2712", }, |
| { .compatible = "mediatek,mt7622", }, |
| { .compatible = "mediatek,mt7623", }, |
| { .compatible = "mediatek,mt817x", }, |
| { .compatible = "mediatek,mt8173", }, |
| { .compatible = "mediatek,mt8176", }, |
| { .compatible = "mediatek,mt8183", }, |
| |
| { .compatible = "nvidia,tegra20", }, |
| { .compatible = "nvidia,tegra30", }, |
| { .compatible = "nvidia,tegra124", }, |
| { .compatible = "nvidia,tegra210", }, |
| |
| { .compatible = "qcom,apq8096", }, |
| { .compatible = "qcom,msm8996", }, |
| { .compatible = "qcom,qcs404", }, |
| |
| { .compatible = "st,stih407", }, |
| { .compatible = "st,stih410", }, |
| |
| { .compatible = "sigma,tango4", }, |
| |
| { .compatible = "ti,am33xx", }, |
| { .compatible = "ti,am43", }, |
| { .compatible = "ti,dra7", }, |
| { .compatible = "ti,omap3", }, |
| |
| { .compatible = "qcom,ipq8064", }, |
| { .compatible = "qcom,apq8064", }, |
| { .compatible = "qcom,msm8974", }, |
| { .compatible = "qcom,msm8960", }, |
| |
| { } |
| }; |
| |
| static bool __init cpu0_node_has_opp_v2_prop(void) |
| { |
| struct device_node *np = of_cpu_device_node_get(0); |
| bool ret = false; |
| |
| if (of_get_property(np, "operating-points-v2", NULL)) |
| ret = true; |
| |
| of_node_put(np); |
| return ret; |
| } |
| |
| static int __init cpufreq_dt_platdev_init(void) |
| { |
| struct device_node *np = of_find_node_by_path("/"); |
| const struct of_device_id *match; |
| const void *data = NULL; |
| |
| if (!np) |
| return -ENODEV; |
| |
| match = of_match_node(whitelist, np); |
| if (match) { |
| data = match->data; |
| goto create_pdev; |
| } |
| |
| if (cpu0_node_has_opp_v2_prop() && !of_match_node(blacklist, np)) |
| goto create_pdev; |
| |
| of_node_put(np); |
| return -ENODEV; |
| |
| create_pdev: |
| of_node_put(np); |
| return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt", |
| -1, data, |
| sizeof(struct cpufreq_dt_platform_data))); |
| } |
| core_initcall(cpufreq_dt_platdev_init); |