ARM: dts: add device tree support for exynos5 hdmi

This patch adds support for device tree based discovery for exynos5
hdmi. Hdmi node is also renamed with "exynos5-hdmi".

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

4 files changed, 34 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/drm/exynos/hdmi.txt b/Documentation/devicetree/bindings/drm/exynos/hdmi.txt
new file mode 100644
index 000000000000..589edee37394
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/hdmi.txt
@@ -0,0 +1,22 @@
+Device-Tree bindings for drm hdmi driver
+
+Required properties:
+- compatible: value should be "samsung,exynos5-hdmi".
+- reg: physical base address of the hdmi and length of memory mapped
+        region.
+- interrupts: interrupt number to the cpu.
+- hpd-gpio: following information about the hotplug gpio pin.
+        a) phandle of the gpio controller node.
+        b) pin number within the gpio controller.
+        c) pin function mode.
+        d) optional flags and pull up/down.
+        e) drive strength.
+
+Example:
+
+        hdmi {
+                compatible = "samsung,exynos5-hdmi";
+                reg = <0x14530000 0x100000>;
+                interrupts = <0 95 0>;
+                hpd-gpio = <&gpx3 7 0xf 1 3>;
+        };
diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index a352df403b7a..2a478abbd98a 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -166,4 +166,8 @@
         spi_2: spi@12d40000 {
                 status = "disabled";
         };
+
+        hdmi {
+                hpd-gpio = <&gpx3 7 0xf 1 3>;
+        };
 };
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index dddfd6e444dc..b68be1cab2e0 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -520,4 +520,10 @@
                 reg = <0x13e30000 0x1000>;
                 interrupts = <0 88 0>;
         };
+
+        hdmi {
+                compatible = "samsung,exynos5-hdmi";
+                reg = <0x14530000 0x100000>;
+                interrupts = <0 95 0>;
+        };
 };
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index db1cd8eacf28..5e38208e0d13 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -72,6 +72,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
                                 "exynos-gsc.2", NULL),
         OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
                                 "exynos-gsc.3", NULL),
+        OF_DEV_AUXDATA("samsung,exynos5-hdmi", 0x14530000,
+                                "exynos5-hdmi", NULL),
         {},
 };