[PATCH V2 1/2] ARM: dts: Add DT changes for display on snow

[Ajay Kumar <ajaykumar.rs@samsung.com>]

Add DT nodes for ptn3460 bridge chip and panel.
Add backlight enable pin and backlight power supply for pwm-backlight.
Also add bridge phandle needed by dp to enable display on snow.

Note that, snow doesn't support "chunghwa,claa101wb01" panel,
but still we choose to reuse the binding since "chunghwa,claa101wb01"
has similar LCD timings.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
Changes since V1:
	-- Remove "simple-panel" compatible string.
	-- Use GPIO_ACTIVE_HIGH instead of 0.
	-- Change panel node naming from "panel-simple" to "panel".

 arch/arm/boot/dts/exynos5250-snow.dts |   41 ++++++++++++++++++---------------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index f2b8c41..1ac9709 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -9,6 +9,7 @@
 */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
 #include "exynos5250.dtsi"
 #include "exynos5250-cros-common.dtsi"
 
@@ -181,7 +182,7 @@
 					dcdc3 {
 						ti,enable-ext-control;
 					};
-					fet1 {
+					fet1: fet1 {
 						regulator-name = "vcd_led";
 						ti,overcurrent-wait = <3>;
 					};
@@ -204,7 +205,7 @@
 						regulator-always-on;
 						ti,overcurrent-wait = <3>;
 					};
-					fet6 {
+					fet6: fet6 {
 						regulator-name = "lcd_vdd";
 						ti,overcurrent-wait = <3>;
 					};
@@ -253,6 +254,15 @@
 			pinctrl-0 = <&max98095_en>;
 			pinctrl-names = "default";
 		};
+
+		ptn3460: lvds-bridge@20 {
+			compatible = "nxp,ptn3460";
+			reg = <0x20>;
+			powerdown-gpios = <&gpy2 5 GPIO_ACTIVE_HIGH>;
+			reset-gpios = <&gpx1 5 GPIO_ACTIVE_HIGH>;
+			edid-emulation = <5>;
+			panel = <&panel>;
+		};
 	};
 
 	i2s0: i2s@03830000 {
@@ -300,11 +310,13 @@
 		vdd_pll-supply = <&ldo8_reg>;
 	};
 
-	backlight {
+	backlight: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pwm 0 1000000 0>;
 		brightness-levels = <0 100 500 1000 1500 2000 2500 2800>;
 		default-brightness-level = <7>;
+		enable-gpios = <&gpx3 0 GPIO_ACTIVE_HIGH>;
+		power-supply = <&fet1>;
 		pinctrl-0 = <&pwm0_out>;
 		pinctrl-names = "default";
 	};
@@ -314,6 +326,12 @@
 		samsung,invert-vclk;
 	};
 
+	panel: panel {
+		compatible = "chunghwa,claa101wb01";
+		power-supply = <&fet6>;
+		backlight = <&backlight>;
+	};
+
 	dp-controller@145B0000 {
 		status = "okay";
 		pinctrl-names = "default";
@@ -325,22 +343,7 @@
 		samsung,link-rate = <0x0a>;
 		samsung,lane-count = <2>;
 		samsung,hpd-gpio = <&gpx0 7 0>;
-
-		display-timings {
-			native-mode = <&timing1>;
-
-			timing1: timing@1 {
-				clock-frequency = <70589280>;
-				hactive = <1366>;
-				vactive = <768>;
-				hfront-porch = <40>;
-				hback-porch = <40>;
-				hsync-len = <32>;
-				vback-porch = <10>;
-				vfront-porch = <12>;
-				vsync-len = <6>;
-			};
-		};
+		bridge = <&ptn3460>;
 	};
 };
 
-- 
1.7.9.5