ARM: dts: Add pmu sysreg node to exynos5250 and exynos5420

This patch adds pmusysreg node to exynos5250 and exynos5420 dtsi files to
handle PMU register accesses in a centralized way using syscon driver

Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Doug Anderson <dianders@chromium.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.txt b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
new file mode 100644
index 000000000000..f1f155255f28
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
@@ -0,0 +1,15 @@
+SAMSUNG Exynos SoC series PMU Registers
+
+Properties:
+ - compatible : should contain two values. First value must be one from following list:
+                   - "samsung,exynos5250-pmu" - for Exynos5250 SoC,
+                   - "samsung,exynos5420-pmu" - for Exynos5420 SoC.
+                second value must be always "syscon".
+
+ - reg : offset and length of the register set.
+
+Example :
+pmu_system_controller: system-controller@10040000 {
+        compatible = "samsung,exynos5250-pmu", "syscon";
+        reg = <0x10040000 0x5000>;
+};
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index b7dec41e32af..a55a5e872efa 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -167,6 +167,11 @@
                 interrupts = <0 47 0>;
         };
 
+        pmu_system_controller: system-controller@10040000 {
+                compatible = "samsung,exynos5250-pmu", "syscon";
+                reg = <0x10040000 0x5000>;
+        };
+
         watchdog {
                 clocks = <&clock 336>;
                 clock-names = "watchdog";
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 8db792b26f79..078b6ffd0c7f 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -613,6 +613,11 @@
                 samsung,power-domain = <&gsc_pd>;
         };
 
+        pmu_system_controller: system-controller@10040000 {
+                compatible = "samsung,exynos5420-pmu", "syscon";
+                reg = <0x10040000 0x5000>;
+        };
+
         tmu_cpu0: tmu@10060000 {
                 compatible = "samsung,exynos5420-tmu";
                 reg = <0x10060000 0x100>;