1 /* 2 * Copyright (C) 2016 Linaro. 3 * Viresh Kumar <viresh.kumar@linaro.org> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 */ 9 10 #include <linux/err.h> 11 #include <linux/of.h> 12 #include <linux/platform_device.h> 13 14 static const struct of_device_id machines[] __initconst = { 15 { .compatible = "allwinner,sun4i-a10", }, 16 { .compatible = "allwinner,sun5i-a10s", }, 17 { .compatible = "allwinner,sun5i-a13", }, 18 { .compatible = "allwinner,sun5i-r8", }, 19 { .compatible = "allwinner,sun6i-a31", }, 20 { .compatible = "allwinner,sun6i-a31s", }, 21 { .compatible = "allwinner,sun7i-a20", }, 22 { .compatible = "allwinner,sun8i-a23", }, 23 { .compatible = "allwinner,sun8i-a33", }, 24 { .compatible = "allwinner,sun8i-a83t", }, 25 { .compatible = "allwinner,sun8i-h3", }, 26 27 { .compatible = "hisilicon,hi6220", }, 28 29 { .compatible = "fsl,imx27", }, 30 { .compatible = "fsl,imx51", }, 31 { .compatible = "fsl,imx53", }, 32 { .compatible = "fsl,imx7d", }, 33 34 { .compatible = "marvell,berlin", }, 35 36 { .compatible = "samsung,exynos3250", }, 37 { .compatible = "samsung,exynos4210", }, 38 { .compatible = "samsung,exynos4212", }, 39 { .compatible = "samsung,exynos4412", }, 40 { .compatible = "samsung,exynos5250", }, 41 #ifndef CONFIG_BL_SWITCHER 42 { .compatible = "samsung,exynos5420", }, 43 { .compatible = "samsung,exynos5800", }, 44 #endif 45 46 { .compatible = "renesas,emev2", }, 47 { .compatible = "renesas,r7s72100", }, 48 { .compatible = "renesas,r8a73a4", }, 49 { .compatible = "renesas,r8a7740", }, 50 { .compatible = "renesas,r8a7778", }, 51 { .compatible = "renesas,r8a7779", }, 52 { .compatible = "renesas,r8a7790", }, 53 { .compatible = "renesas,r8a7791", }, 54 { .compatible = "renesas,r8a7793", }, 55 { .compatible = "renesas,r8a7794", }, 56 { .compatible = "renesas,sh73a0", }, 57 58 { .compatible = "rockchip,rk2928", }, 59 { .compatible = "rockchip,rk3036", }, 60 { .compatible = "rockchip,rk3066a", }, 61 { .compatible = "rockchip,rk3066b", }, 62 { .compatible = "rockchip,rk3188", }, 63 { .compatible = "rockchip,rk3228", }, 64 { .compatible = "rockchip,rk3288", }, 65 { .compatible = "rockchip,rk3366", }, 66 { .compatible = "rockchip,rk3368", }, 67 { .compatible = "rockchip,rk3399", }, 68 69 { .compatible = "sigma,tango4" }, 70 71 { .compatible = "ti,omap2", }, 72 { .compatible = "ti,omap3", }, 73 { .compatible = "ti,omap4", }, 74 { .compatible = "ti,omap5", }, 75 76 { .compatible = "xlnx,zynq-7000", }, 77 }; 78 79 static int __init cpufreq_dt_platdev_init(void) 80 { 81 struct device_node *np = of_find_node_by_path("/"); 82 const struct of_device_id *match; 83 84 if (!np) 85 return -ENODEV; 86 87 match = of_match_node(machines, np); 88 of_node_put(np); 89 if (!match) 90 return -ENODEV; 91 92 return PTR_ERR_OR_ZERO(platform_device_register_simple("cpufreq-dt", -1, 93 NULL, 0)); 94 } 95 device_initcall(cpufreq_dt_platdev_init); 96