ARM: dts: sun7i: Add LVDS panel support on A20

Define pins for LVDS channels 0 and 1, configure reset line for tcon0 and
provide sample LVDS panel, connected to tcon0.

Signed-off-by: Andrey Lebedev <andrey@lebedev.lt>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm/boot/dts/sun7i-a20.dtsi

@@ -47,6 +47,7 @@
 #include <dt-bindings/dma/sun4i-a10.h>
 #include <dt-bindings/clock/sun7i-a20-ccu.h>
 #include <dt-bindings/reset/sun4i-a10-ccu.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -404,11 +405,12 @@
 		};
 
 		tcon0: lcd-controller@1c0c000 {
-			compatible = "allwinner,sun7i-a20-tcon";
+			compatible = "allwinner,sun7i-a20-tcon0",
+				     "allwinner,sun7i-a20-tcon";
 			reg = <0x01c0c000 0x1000>;
 			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
-			resets = <&ccu RST_TCON0>;
-			reset-names = "lcd";
+			resets = <&ccu RST_TCON0>, <&ccu RST_LVDS>;
+			reset-names = "lcd", "lvds";
 			clocks = <&ccu CLK_AHB_LCD0>,
 				 <&ccu CLK_TCON0_CH0>,
 				 <&ccu CLK_TCON0_CH1>;
@@ -454,7 +456,8 @@
 		};
 
 		tcon1: lcd-controller@1c0d000 {
-			compatible = "allwinner,sun7i-a20-tcon";
+			compatible = "allwinner,sun7i-a20-tcon1",
+				     "allwinner,sun7i-a20-tcon";
 			reg = <0x01c0d000 0x1000>;
 			interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
 			resets = <&ccu RST_TCON1>;
@@ -931,6 +934,20 @@
 				function = "ir1";
 			};
 
+			/omit-if-no-ref/
+			lcd_lvds0_pins: lcd-lvds0-pins {
+				pins = "PD0", "PD1", "PD2", "PD3", "PD4",
+				       "PD5", "PD6", "PD7", "PD8", "PD9";
+				function = "lvds0";
+			};
+
+			/omit-if-no-ref/
+			lcd_lvds1_pins: lcd-lvds1-pins {
+				pins = "PD10", "PD11", "PD12", "PD13", "PD14",
+				       "PD15", "PD16", "PD17", "PD18", "PD19";
+				function = "lvds1";
+			};
+
 			/omit-if-no-ref/
 			mmc0_pins: mmc0-pins {
 				pins = "PF0", "PF1", "PF2",