linux-kernel - [PATCH v2 2/2] ARM: sun7i: dts: Add LVDS panel support on A20

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Message-Id: <20200212222355.17141-2-andrey.lebedev@gmail.com>
Date:   Thu, 13 Feb 2020 00:23:57 +0200
From:   andrey.lebedev@...il.com
To:     mripard@...nel.org, wens@...e.org, airlied@...ux.ie,
        daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linux-sunxi@...glegroups.com, Andrey Lebedev <andrey@...edev.lt>
Subject: [PATCH v2 2/2] ARM: sun7i: dts: Add LVDS panel support on A20

From: Andrey Lebedev <andrey@...edev.lt>

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@...edev.lt>
---
 arch/arm/boot/dts/sun7i-a20.dtsi | 45 +++++++++++++++++++++++++++++---
 1 file changed, 42 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 92b5be97085d..b05fdf8df32e 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/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>;
@@ -407,8 +408,8 @@
 			compatible = "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>;
@@ -444,6 +445,11 @@
 					#size-cells = <0>;
 					reg = <1>;
 
+					tcon0_out_lvds: endpoint@0 {
+						reg = <0>;
+						remote-endpoint = <&lvds_in_tcon0>;
+						allwinner,tcon-channel = <0>;
+					};
 					tcon0_out_hdmi: endpoint@1 {
 						reg = <1>;
 						remote-endpoint = <&hdmi_in_tcon0>;
@@ -686,6 +692,19 @@
 			};
 		};
 
+		lvds_panel: panel@...6500 {
+			compatible = "panel-lvds";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			port {
+				lvds_in_tcon0: endpoint {
+					remote-endpoint = <&tcon0_out_lvds>;
+				};
+			};
+		};
+
 		spi2: spi@...7000 {
 			compatible = "allwinner,sun4i-a10-spi";
 			reg = <0x01c17000 0x1000>;
@@ -872,7 +891,7 @@
 			gmac_rgmii_pins: gmac-rgmii-pins {
 				pins = "PA0", "PA1", "PA2",
 				       "PA3", "PA4", "PA5", "PA6",
-				        "PA7", "PA8", "PA10",
+					"PA7", "PA8", "PA10",
 				       "PA11", "PA12", "PA13",
 				       "PA15", "PA16";
 				function = "gmac";
@@ -1162,6 +1181,26 @@
 				pins = "PI20", "PI21";
 				function = "uart7";
 			};
+
+			/omit-if-no-ref/
+			lcd_lvds0_pins: lcd_lvds0_pins {
+				allwinner,pins =
+					"PD0", "PD1", "PD2", "PD3", "PD4",
+					"PD5", "PD6", "PD7", "PD8", "PD9";
+				allwinner,function = "lvds0";
+				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
+
+			/omit-if-no-ref/
+			lcd_lvds1_pins: lcd_lvds1_pins {
+				allwinner,pins =
+					"PD10", "PD11", "PD12", "PD13", "PD14",
+					"PD15", "PD16", "PD17", "PD18", "PD19";
+				allwinner,function = "lvds1";
+				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
 		};
 
 		timer@...0c00 {
-- 
2.20.1