[PATCH 2/4] arm64: dts: freescale: imx8mp-verdin: Add DSI to HDMI adapter overlay

[Ernest Van Hoecke]

From: Ernest Van Hoecke <ernest.vanhoecke at toradex.com>

Add a device tree overlay for the Toradex DSI to HDMI Adapter, an
accessory that connects to the Verdin DSI_1 interface and provides a
full-size HDMI Type-A output. The adapter is based on the Lontium
LT8912B DSI-to-HDMI bridge.

The overlay is also combined with the Verdin iMX8M Plus carrier board
device trees to provide ready-to-use DTBs for the Dahlia, Yavia and
Development Board carriers, in both WiFi and non-WiFi SoM variants.

Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-hdmi-adapter
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke at toradex.com>
---
 arch/arm64/boot/dts/freescale/Makefile             |  13 +++
 .../dts/freescale/imx8mp-verdin-dsi-to-hdmi.dtso   | 102 +++++++++++++++++++++
 2 files changed, 115 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 8c6fdeaf12af..715235b62912 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -729,21 +729,34 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw74xx.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw75xx-2x.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw82xx-2x.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-dev-nau8822-btl.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-dsi-to-hdmi.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dev.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-ivy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-mallow.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-yavia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-yavia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-zinnia.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-nau8822-btl.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-ivy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-mallow.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-yavia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-yavia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-zinnia.dtb
 
+imx8mp-verdin-nonwifi-dahlia-dsi-to-hdmi-dtbs := imx8mp-verdin-nonwifi-dahlia.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
+imx8mp-verdin-nonwifi-dev-dsi-to-hdmi-dtbs := imx8mp-verdin-nonwifi-dev.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
+imx8mp-verdin-nonwifi-yavia-dsi-to-hdmi-dtbs := imx8mp-verdin-nonwifi-yavia.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
+imx8mp-verdin-wifi-dahlia-dsi-to-hdmi-dtbs := imx8mp-verdin-wifi-dahlia.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
+imx8mp-verdin-wifi-dev-dsi-to-hdmi-dtbs := imx8mp-verdin-wifi-dev.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
 imx8mp-verdin-wifi-dev-nau8822-btl-dtbs := imx8mp-verdin-wifi-dev.dtb imx8mp-verdin-dev-nau8822-btl.dtbo
+imx8mp-verdin-wifi-yavia-dsi-to-hdmi-dtbs := imx8mp-verdin-wifi-yavia.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
 
 imx8mp-evk-lvds0-imx-dlvds-hdmi-channel0-dtbs += imx8mp-evk.dtb imx8mp-evk-lvds0-imx-dlvds-hdmi-channel0.dtbo
 imx8mp-evk-lvds0-imx-lvds-hdmi-dtbs += imx8mp-evk.dtb imx8mp-evk-lvds0-imx-lvds-hdmi.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dsi-to-hdmi.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dsi-to-hdmi.dtso
new file mode 100644
index 000000000000..e572fd13b987
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dsi-to-hdmi.dtso
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex DSI to HDMI Adapter on Verdin DSI_1.
+ *
+ * https://developer.toradex.com/hardware/accessories/add-ons/dsi-hdmi-adapter
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_pwm_3_dsi_hpd_gpio>;
+		ddc-i2c-bus = <&i2c2>;
+		/* Verdin PWM_3_DSI (SODIMM 19) - HPD */
+		hpd-gpios = <&gpio3 20 GPIO_ACTIVE_HIGH>;
+		label = "hdmi";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&dsi_hdmi_bridge_out>;
+			};
+		};
+	};
+
+	reg_dsi_hdmi: regulator-dsi-hdmi {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		/* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */
+		gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+		regulator-boot-on;
+		regulator-name = "DSI_1_PWR_EN";
+	};
+};
+
+&hdmi_lontium_lt8912 {
+	pinctrl-0 = <&pinctrl_gpio_10_dsi>;
+	vcchdmipll-supply = <&reg_dsi_hdmi>;
+	vcchdmitx-supply = <&reg_dsi_hdmi>;
+	vcclvdspll-supply = <&reg_dsi_hdmi>;
+	vcclvdstx-supply = <&reg_dsi_hdmi>;
+	vccmipirx-supply = <&reg_dsi_hdmi>;
+	vccsysclk-supply = <&reg_dsi_hdmi>;
+	vdd-supply = <&reg_dsi_hdmi>;
+
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port at 0 {
+			reg = <0>;
+
+			dsi_hdmi_bridge_in: endpoint {
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&mipi_dsi_out>;
+			};
+		};
+
+		port at 1 {
+			reg = <1>;
+
+			dsi_hdmi_bridge_out: endpoint {
+				remote-endpoint = <&hdmi_connector_in>;
+			};
+		};
+	};
+};
+
+/* Verdin I2C_2_DSI */
+&i2c2 {
+	clock-frequency = <10000>;
+
+	status = "okay";
+};
+
+&lcdif1 {
+	status = "okay";
+};
+
+&mipi_dsi {
+	samsung,esc-clock-frequency = <16000000>;
+
+	status = "okay";
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&dsi_hdmi_bridge_in>;
+};
+
+/* Verdin PWM_3_DSI (SODIMM 19) repurposed as HDMI HPD GPIO */
+&pwm3 {
+	status = "disabled";
+};

-- 
2.43.0