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Diffstat (limited to 'drivers/cpufreq/cpufreq-dt-platdev.c')
-rw-r--r--drivers/cpufreq/cpufreq-dt-platdev.c65
1 files changed, 48 insertions, 17 deletions
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 1c262923fe58..a020da7940d6 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -9,11 +9,16 @@
#include <linux/err.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include "cpufreq-dt.h"
-static const struct of_device_id machines[] __initconst = {
+/*
+ * 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", },
@@ -22,7 +27,6 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "allwinner,sun6i-a31s", },
{ .compatible = "allwinner,sun7i-a20", },
{ .compatible = "allwinner,sun8i-a23", },
- { .compatible = "allwinner,sun8i-a33", },
{ .compatible = "allwinner,sun8i-a83t", },
{ .compatible = "allwinner,sun8i-h3", },
@@ -32,7 +36,6 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "arm,integrator-cp", },
{ .compatible = "hisilicon,hi3660", },
- { .compatible = "hisilicon,hi6220", },
{ .compatible = "fsl,imx27", },
{ .compatible = "fsl,imx51", },
@@ -46,11 +49,8 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "samsung,exynos3250", },
{ .compatible = "samsung,exynos4210", },
{ .compatible = "samsung,exynos4212", },
- { .compatible = "samsung,exynos4412", },
{ .compatible = "samsung,exynos5250", },
#ifndef CONFIG_BL_SWITCHER
- { .compatible = "samsung,exynos5420", },
- { .compatible = "samsung,exynos5433", },
{ .compatible = "samsung,exynos5800", },
#endif
@@ -67,6 +67,8 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "renesas,r8a7792", },
{ .compatible = "renesas,r8a7793", },
{ .compatible = "renesas,r8a7794", },
+ { .compatible = "renesas,r8a7795", },
+ { .compatible = "renesas,r8a7796", },
{ .compatible = "renesas,sh73a0", },
{ .compatible = "rockchip,rk2928", },
@@ -76,17 +78,17 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "rockchip,rk3188", },
{ .compatible = "rockchip,rk3228", },
{ .compatible = "rockchip,rk3288", },
+ { .compatible = "rockchip,rk3328", },
{ .compatible = "rockchip,rk3366", },
{ .compatible = "rockchip,rk3368", },
{ .compatible = "rockchip,rk3399", },
- { .compatible = "sigma,tango4" },
-
- { .compatible = "socionext,uniphier-pro5", },
- { .compatible = "socionext,uniphier-pxs2", },
{ .compatible = "socionext,uniphier-ld6b", },
- { .compatible = "socionext,uniphier-ld11", },
- { .compatible = "socionext,uniphier-ld20", },
+
+ { .compatible = "st-ericsson,u8500", },
+ { .compatible = "st-ericsson,u8540", },
+ { .compatible = "st-ericsson,u9500", },
+ { .compatible = "st-ericsson,u9540", },
{ .compatible = "ti,omap2", },
{ .compatible = "ti,omap3", },
@@ -94,27 +96,56 @@ static const struct of_device_id machines[] __initconst = {
{ .compatible = "ti,omap5", },
{ .compatible = "xlnx,zynq-7000", },
+ { .compatible = "xlnx,zynqmp", },
- { .compatible = "zte,zx296718", },
+ { }
+};
+/*
+ * 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(machines, np);
+ 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);
- if (!match)
- return -ENODEV;
+ return -ENODEV;
+create_pdev:
+ of_node_put(np);
return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt",
- -1, match->data,
+ -1, data,
sizeof(struct cpufreq_dt_platform_data)));
}
device_initcall(cpufreq_dt_platdev_init);