ARM: keystone: fix PM domain initcall to be keystone only

initcalls need to have platform specific checks so they are not run in
multi-platform builds.

Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/mach-keystone/pm_domain.c b/arch/arm/mach-keystone/pm_domain.c
index beac3fb1d205..29625232e954 100644
--- a/arch/arm/mach-keystone/pm_domain.c
+++ b/arch/arm/mach-keystone/pm_domain.c
@@ -17,6 +17,7 @@
 #include <linux/pm_clock.h>
 #include <linux/platform_device.h>
 #include <linux/clk-provider.h>
+#include <linux/of.h>
 
 #ifdef CONFIG_PM_RUNTIME
 static int keystone_pm_runtime_suspend(struct device *dev)
@@ -60,8 +61,19 @@ static struct pm_clk_notifier_block platform_domain_notifier = {
         .pm_domain = &keystone_pm_domain,
 };
 
+static struct of_device_id of_keystone_table[] = {
+        {.compatible = "ti,keystone"},
+        { /* end of list */ },
+};
+
 int __init keystone_pm_runtime_init(void)
 {
+        struct device_node *np;
+
+        np = of_find_matching_node(NULL, of_keystone_table);
+        if (!np)
+                return 0;
+
         of_clk_init(NULL);
         pm_clk_add_notifier(&platform_bus_type, &platform_domain_notifier);