From f4ae60f83d50473851e24c76e1c40bbecf877320 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Sat, 20 Jun 2020 02:40:36 +0200
Subject: overlays: verdin-imx8mm_lt8912_overlay: verdin dsi to hdmi adapter

Add device tree overlay for Verdin DSI to HDMI Adapter orderable at
Toradex.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---
 overlays/verdin-imx8mm_lt8912_overlay.dts | 69 +++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 overlays/verdin-imx8mm_lt8912_overlay.dts

diff --git a/overlays/verdin-imx8mm_lt8912_overlay.dts b/overlays/verdin-imx8mm_lt8912_overlay.dts
new file mode 100644
index 0000000..e1b16a2
--- /dev/null
+++ b/overlays/verdin-imx8mm_lt8912_overlay.dts
@@ -0,0 +1,69 @@
+// Verdin DSI to HDMI Adapter orderable at Toradex.
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "toradex,verdin-imx8mm";
+};
+
+&{/soc@0/bus@32c00000/display-subsystem} {
+	status = "okay";
+};
+
+/* Verdin I2C_2_DSI */
+&i2c2 {
+	clock-frequency = <10000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+};
+
+/* Verdin I2C_1 */
+&i2c4 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hdmi@48 {
+		compatible = "lontium,lt8912";
+		ddc-i2c-bus = <&i2c2>;
+		hpd-gpios = <&gpio3 15 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_hpd>, <&pinctrl_gpio1>,
+			    <&pinctrl_gpio2>;
+		reg = <0x48>;
+		reset-gpios = <&gpio5 5 GPIO_ACTIVE_LOW>;
+
+		port {
+			lt8912_1_in: endpoint {
+				remote-endpoint = <&mipi_dsi_bridge1_out>;
+			};
+		};
+	};
+};
+
+&lcdif {
+	status = "okay";
+};
+
+&mipi_dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	port@1 {
+		reg = <1>;
+
+		mipi_dsi_bridge1_out: endpoint {
+			remote-endpoint = <&lt8912_1_in>;
+			attach-bridge;
+		};
+	};
+};
+
+&gpu {
+	status = "okay";
+};
-- 
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