ARM: dts: add sysreg phandle to i2c device nodes for exynos

This patch adds syscon based phandle to i2c device nodes of exynos5250
and exynos5420. These phandles will be used to save restore i2c sysreg
configuration register during s2r from i2c driver.

CC: Rob Herring <robh+dt@kernel.org>
CC: Randy Dunlap <rdunlap@infradead.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: devicetree@vger.kernel.org
CC: linux-doc@vger.kernel.org
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 9 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
index 278de8e64bbf..89b3250f049b 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
@@ -32,6 +32,7 @@ Optional properties:
     specified, default value is 0.
   - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
     specified, the default value in Hz is 100000.
+  - samsung,sysreg-phandle - handle to syscon used to control the system registers
 
 Example:
 
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 012b0211afed..6a32d50070c1 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -293,6 +293,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c0_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -306,6 +307,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c1_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -319,6 +321,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c2_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -332,6 +335,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c3_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 8617a031cbc0..90bf4011e319 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -560,6 +560,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c0_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -573,6 +574,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c1_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -586,6 +588,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c2_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };
 
@@ -599,6 +602,7 @@
                 clock-names = "i2c";
                 pinctrl-names = "default";
                 pinctrl-0 = <&i2c3_bus>;
+                samsung,sysreg-phandle = <&sysreg_system_controller>;
                 status = "disabled";
         };