ARM: dts: add device tree support for exynos5 hdmiddc

This patch adds support for device tree based discovery for exynos5
hdmi ddc.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 23 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt b/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt
new file mode 100644
index 000000000000..fa166d945809
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/hdmiddc.txt
@@ -0,0 +1,12 @@
+Device-Tree bindings for hdmiddc driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-hdmiddc".
+- reg: I2C address of the hdmiddc device.
+
+Example:
+
+        hdmiddc {
+                compatible = "samsung,exynos5-hdmiddc";
+                reg = <0x50>;
+        };
diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index 7dc196f6b0a1..7212d538086d 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -56,7 +56,15 @@
         };
 
         i2c@12C80000 {
-                status = "disabled";
+                samsung,i2c-sda-delay = <100>;
+                samsung,i2c-max-bus-freq = <66000>;
+                gpios = <&gpa0 6 3 3 0>,
+                        <&gpa0 7 3 3 0>;
+
+                hdmiddc@50 {
+                        compatible = "samsung,exynos5-hdmiddc";
+                        reg = <0x50>;
+                };
         };
 
         i2c@12C90000 {
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 0f20ba8fcf1b..db035374087e 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -47,6 +47,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
                                 "s3c2440-i2c.0", NULL),
         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
                                 "s3c2440-i2c.1", NULL),
+        OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
+                                "s3c2440-i2c.2", NULL),
         OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
                                 "s3c2440-hdmiphy-i2c", NULL),
         OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,