drivers/cpufreq/cpufreq-dt-platdev.c

   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 };
  80
  81 static int __init cpufreq_dt_platdev_init(void)
  82 {
  83         struct device_node *np = of_find_node_by_path("/");
  84         const struct of_device_id *match;
  85
  86         if (!np)
  87                 return -ENODEV;
  88
  89         match = of_match_node(machines, np);
  90         of_node_put(np);
  91         if (!match)
  92                 return -ENODEV;
  93
  94         return PTR_ERR_OR_ZERO(platform_device_register_simple("cpufreq-dt", -1,
  95                                                                NULL, 0));
  96 }
  97 device_initcall(cpufreq_dt_platdev_init);