d79d148b64
Drop few ARM (32 and 64 bit) platforms from the whitelist which always use "operating-points-v2" property from their DT. They should continue to work after this patch. Tested on Hikey platform (only the "hisilicon,hi6220" entry). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/*
|
|
* Copyright (C) 2016 Linaro.
|
|
* Viresh Kumar <viresh.kumar@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#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 = "fsl,imx7d", },
|
|
|
|
{ .compatible = "marvell,berlin", },
|
|
{ .compatible = "marvell,pxa250", },
|
|
{ .compatible = "marvell,pxa270", },
|
|
|
|
{ .compatible = "samsung,exynos3250", },
|
|
{ .compatible = "samsung,exynos4210", },
|
|
{ .compatible = "samsung,exynos4212", },
|
|
{ .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,r8a7743", },
|
|
{ .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,r8a7795", },
|
|
{ .compatible = "renesas,r8a7796", },
|
|
{ .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", },
|
|
|
|
{ .compatible = "socionext,uniphier-ld6b", },
|
|
|
|
{ .compatible = "st-ericsson,u8500", },
|
|
{ .compatible = "st-ericsson,u8540", },
|
|
{ .compatible = "st-ericsson,u9500", },
|
|
{ .compatible = "st-ericsson,u9540", },
|
|
|
|
{ .compatible = "ti,omap2", },
|
|
{ .compatible = "ti,omap3", },
|
|
{ .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 = {
|
|
{ }
|
|
};
|
|
|
|
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)));
|
|
}
|
|
device_initcall(cpufreq_dt_platdev_init);
|