From 8bb6895b8dab113d1d875b97dc71ef4c97d4723f Mon Sep 17 00:00:00 2001
From: handsomeyingyan <handsomeyingyan@github.com>
Date: Wed, 13 Jan 2021 17:04:17 +0800
Subject: [PATCH] add rgb666 support for cubieboard2

---
 arch/arm/dts/sun7i-a20-cubieboard2.dts | 54 ++++++++++++++++++++++++++
 arch/arm/dts/sun7i-a20.dtsi            | 14 +++++++
 configs/Cubieboard2_defconfig          |  5 +++
 3 files changed, 73 insertions(+)

diff --git a/arch/arm/dts/sun7i-a20-cubieboard2.dts b/arch/arm/dts/sun7i-a20-cubieboard2.dts
index 200685b0..0eddf887 100644
--- a/arch/arm/dts/sun7i-a20-cubieboard2.dts
+++ b/arch/arm/dts/sun7i-a20-cubieboard2.dts
@@ -72,6 +72,37 @@
 		};
 	};
 
+	backlight_display: backlight_display {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 10000000 0>;
+		power-supply = <&reg_vcc5v0>;
+
+		brightness-levels = <0 64 93 122 151 180 209 240>;
+		default-brightness-level = <7>;
+	};
+
+	panel: panel {
+		compatible = "netron-dy,e231732", "simple-panel";
+		backlight = <&backlight_display>;
+		power-supply = <&reg_vcc5v0>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&lcd_enable_pin &lcd_rgb666_pins>;
+		enable-gpios = <&pio 1 10 GPIO_ACTIVE_HIGH>; /* PB10 */
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			panel_input: endpoint {
+				remote-endpoint = <&tcon0_out_lcd>;
+			};
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
@@ -134,6 +165,12 @@
 	};
 };
 
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pin>;
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 
@@ -243,3 +280,20 @@
 	usb2_vbus-supply = <&reg_usb2_vbus>;
 	status = "okay";
 };
+
+&be0 {
+	status = "okay";
+};
+
+&tcon0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&lcd_rgb666_pins>;
+	status = "okay";
+};
+
+&tcon0_out {
+	tcon0_out_lcd: endpoint@0 {
+		reg = <0>;
+		remote-endpoint = <&panel_input>;
+	};
+};
diff --git a/arch/arm/dts/sun7i-a20.dtsi b/arch/arm/dts/sun7i-a20.dtsi
index 641a8fa6..3a3966dd 100644
--- a/arch/arm/dts/sun7i-a20.dtsi
+++ b/arch/arm/dts/sun7i-a20.dtsi
@@ -987,6 +987,20 @@
 				pins = "PI20", "PI21";
 				function = "uart7";
 			};
+
+	                lcd_enable_pin: lcd_enable_pin@0 {
+		                pins = "PB10";
+				function = "gpio_out";
+			};
+
+			lcd_rgb666_pins: lcd-rgb666@0 {
+				pins = "PD2", "PD3", "PD4", "PD5", "PD6", "PD7",
+				       "PD10", "PD11", "PD12", "PD13", "PD14", "PD15",
+				       "PD18", "PD19", "PD20", "PD21", "PD22", "PD23",
+				       "PD24", "PD25", "PD26", "PD27";
+				function = "lcd0";
+			};
+
 		};
 
 		timer@1c20c00 {
diff --git a/configs/Cubieboard2_defconfig b/configs/Cubieboard2_defconfig
index aa7a9d48..727f14f9 100644
--- a/configs/Cubieboard2_defconfig
+++ b/configs/Cubieboard2_defconfig
@@ -17,3 +17,8 @@ CONFIG_SUN7I_GMAC=y
 CONFIG_SCSI=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_OHCI_HCD=y
+CONFIG_AXP_GPIO=y
+CONFIG_VIDEO_LCD_MODE="x:1024,y:600,depth:18,pclk_khz:51000,le:159,ri:160,up:22,lo:12,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_POWER="AXP0-0"
+CONFIG_VIDEO_LCD_BL_EN="AXP0-1"
+CONFIG_VIDEO_LCD_BL_PWM="PB2"
-- 
2.30.0