aquila-am69: add DSI to HDMI overlay

Add Aquila DSI to HDMI adapter overlay.

Related-to: ELB-5769

Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>

2 files changed, 123 insertions, 0 deletions

diff --git a/overlays/Makefile b/overlays/Makefile
index 733234f..af8bdef 100644
--- a/overlays/Makefile
+++ b/overlays/Makefile
@@ -19,6 +19,7 @@ HOSTCC := gcc $(DTS_INCLUDES)
 
 PWD := $(shell pwd)
 
+dtb-y += aquila-am69_dsi-to-hdmi_overlay.dtbo
 dtb-y += verdin-am62_dsi-to-hdmi_overlay.dtbo
 dtb-y += verdin-am62_dsi-to-lvds_panel-cap-touch-10inch-lvds_overlay.dtbo
 dtb-y += verdin-am62_hmp_overlay.dtbo
diff --git a/overlays/aquila-am69_dsi-to-hdmi_overlay.dts b/overlays/aquila-am69_dsi-to-hdmi_overlay.dts
new file mode 100644
index 0000000..a6633a0
--- /dev/null
+++ b/overlays/aquila-am69_dsi-to-hdmi_overlay.dts
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2024 Toradex
+ */
+
+// Toradex DSI to HDMI Adapter on Aquila DSI_1.
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	compatible = "toradex,aquila-am69";
+};
+
+&{/} {
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pwm3_dsi_gpio>;
+		/* Aquila I2C_3_DSI1 */
+		ddc-i2c-bus = <&pinctrl_main_i2c0>;
+		/* Aquila PWM_3_DSI (AQUILA B46) */
+		hpd-gpios = <&main_gpio0 33 GPIO_ACTIVE_HIGH>;
+		label = "hdmi";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&lt8912_1_out>;
+			};
+		};
+	};
+};
+
+&dphy_tx0 {
+	status = "okay";
+};
+
+&dsi0 {
+	status = "okay";
+};
+
+&dsi0_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@0 {
+		reg = <0>;
+
+		dsi0_out: endpoint {
+			remote-endpoint = <&lt8912_1_in>;
+		};
+	};
+
+	port@1 {
+		reg = <1>;
+
+		dsi0_in: endpoint {
+			remote-endpoint = <&dpi2_out>;
+		};
+	};
+};
+
+&dss_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@2 {
+		reg = <2>;
+
+		dpi2_out: endpoint {
+			remote-endpoint = <&dsi0_in>;
+		};
+	};
+};
+
+/* Aquila PWM_3_DSI */
+&main_ehrpwm5 {
+	/* Aquila PWM_3_DSI (AQUILA B46) is used as HDMI HPD / GPIO, disable to avoid conflicts */
+	status = "disabled";
+};
+
+/* Aquila I2C_3_DSI1 */
+&main_i2c0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hdmi@48 {
+		compatible = "lontium,lt8912b";
+		reg = <0x48>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_20_dsi_1>;
+		/* Aquila GPIO_20_DSI_1 (AQUILA B45) */
+		reset-gpios = <&main_gpio0 18 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lt8912_1_in: endpoint {
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&dsi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				lt8912_1_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
+};