ARM: dts: Add sysreg sytem controller node to exynos5250 and exynos5420

This patch adds sysreg-syscon node to exynos5250 and exynos5420 device
tree, to access System Register's registers using syscon driver.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
[gautam.vivek@samsung.com: Split this syreg-syscon dts entry]
[gautam.vivek@samsung.com: added similar syscon entry for exynos5420]
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
[vikas.sajjan@samsung.com: updated the binding document]
Signed-off-by: Vikas Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 19 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/arm/samsung/sysreg.txt b/Documentation/devicetree/bindings/arm/samsung/sysreg.txt
index 0ab3251a6ec2..4fced6e9d5e4 100644
--- a/Documentation/devicetree/bindings/arm/samsung/sysreg.txt
+++ b/Documentation/devicetree/bindings/arm/samsung/sysreg.txt
@@ -1,8 +1,10 @@
 SAMSUNG S5P/Exynos SoC series System Registers (SYSREG)
 
 Properties:
- - compatible : should contain "samsung,<chip name>-sysreg", "syscon";
-   For Exynos4 SoC series it should be "samsung,exynos4-sysreg", "syscon";
+ - compatible : should contain two values. First value must be one from following list:
+                - "samsung,exynos4-sysreg" - for Exynos4 based SoCs,
+                - "samsung,exynos5-sysreg" - for Exynos5 based SoCs.
+                second value must be always "syscon".
  - reg : offset and length of the register set.
 
 Example:
@@ -10,3 +12,8 @@ Example:
                 compatible = "samsung,exynos4-sysreg", "syscon";
                 reg = <0x10010000 0x400>;
         };
+
+        syscon@10050000 {
+                compatible = "samsung,exynos5-sysreg", "syscon";
+                reg = <0x10050000 0x5000>;
+        };
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 68a3e6f254d9..8e9b9a31d959 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -193,6 +193,11 @@
                 reg = <0x10040000 0x5000>;
         };
 
+        sysreg_system_controller: syscon@10050000 {
+                compatible = "samsung,exynos5-sysreg", "syscon";
+                reg = <0x10050000 0x5000>;
+        };
+
         watchdog@101D0000 {
                 compatible = "samsung,exynos5250-wdt";
                 reg = <0x101D0000 0x100>;
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index c0436b8563c3..1debb718ecef 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -701,6 +701,11 @@
                 reg = <0x10040000 0x5000>;
         };
 
+        sysreg_system_controller: syscon@10050000 {
+                compatible = "samsung,exynos5-sysreg", "syscon";
+                reg = <0x10050000 0x5000>;
+        };
+
         tmu_cpu0: tmu@10060000 {
                 compatible = "samsung,exynos5420-tmu";
                 reg = <0x10060000 0x100>;