[PATCH 4/4] arm64: DTS: allwinner: a64: enable ANX6345 bridge on Teres-I

[Torsten Duwe]

From: Icenowy Zheng <icenowy at aosc.io>

TERES-I has an ANX6345 bridge connected to the RGB666 LCD output, and
the I2C controlling signals are connected to I2C0 bus.

Enable it in the device tree.

Signed-off-by: Icenowy Zheng <icenowy at aosc.io>
Signed-off-by: Torsten Duwe <duwe at suse.de>
---

originally: patchwork.kernel.org/patch/10646867

Changed the reset polarity, which is active low,
according to the (terse) datasheet, Teres-I and pinebook schematics,
and the confusing parts of the linux driver code (not yet included here).
Active low -> no more confusion.

---
 .../boot/dts/allwinner/sun50i-a64-teres-i.dts | 40 +++++++++++++++++--
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
index c455b24dd079..bc1d0d6c0672 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
@@ -72,20 +72,38 @@
 	};
 };
 
+&de {
+	status = "okay";
+};
+
 &ehci1 {
 	status = "okay";
 };
 
 
-/* The ANX6345 eDP-bridge is on i2c0. There is no linux (mainline)
- * driver for this chip at the moment, the bootloader initializes it.
- * However it can be accessed with the i2c-dev driver from user space.
- */
 &i2c0 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins>;
 	status = "okay";
+
+	anx6345: anx6345 at 38 {
+		compatible = "analogix,anx6345";
+		reg = <0x38>;
+		reset-gpios = <&pio 3 24 GPIO_ACTIVE_LOW>; /* PD24 */
+		dvdd25-supply = <&reg_dldo2>;
+		dvdd12-supply = <&reg_dldo3>;
+
+		port {
+			anx6345_in: endpoint {
+				remote-endpoint = <&tcon0_out_anx6345>;
+			};
+		};
+	};
+};
+
+&mixer0 {
+	status = "okay";
 };
 
 &mmc0 {
@@ -258,6 +276,20 @@
 	vcc-hdmi-supply = <&reg_dldo1>;
 };
 
+&tcon0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&lcd_rgb666_pins>;
+
+	status = "okay";
+};
+
+&tcon0_out {
+	tcon0_out_anx6345: endpoint at 0 {
+		reg = <0>;
+		remote-endpoint = <&anx6345_in>;
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pb_pins>;