From: Vitor Soares <vitor.soares@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 AM62 carrier board device
trees to provide ready-to-use DTBs for the Dahlia 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: Vitor Soares <vitor.soares@toradex.com>
---
 arch/arm64/boot/dts/ti/Makefile               | 13 +++
 .../dts/ti/k3-am625-verdin-dsi-to-hdmi.dtso   | 94 +++++++++++++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-hdmi.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 7642c06ca834..21db60cd19de 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -9,19 +9,32 @@
 # alphabetically.
 
 # Boards with AM62x SoC
+k3-am625-verdin-nonwifi-dahlia-dsi-to-hdmi-dtbs := k3-am625-verdin-nonwifi-dahlia.dtb \
+	k3-am625-verdin-dsi-to-hdmi.dtbo
+k3-am625-verdin-nonwifi-dev-dsi-to-hdmi-dtbs := k3-am625-verdin-nonwifi-dev.dtb \
+	k3-am625-verdin-dsi-to-hdmi.dtbo
+k3-am625-verdin-wifi-dahlia-dsi-to-hdmi-dtbs := k3-am625-verdin-wifi-dahlia.dtb \
+	k3-am625-verdin-dsi-to-hdmi.dtbo
+k3-am625-verdin-wifi-dev-dsi-to-hdmi-dtbs := k3-am625-verdin-wifi-dev.dtb \
+	k3-am625-verdin-dsi-to-hdmi.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-ov5640.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-tqma62xx-mba62xx.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dsi-to-hdmi.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dev.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-ivy.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-mallow.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-yavia.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-zinnia.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-ivy.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-mallow.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-hdmi.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-hdmi.dtso
new file mode 100644
index 000000000000..a219faf0dcc6
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-hdmi.dtso
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later 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_pwm3_dsi_gpio>;
+		ddc-i2c-bus = <&main_i2c2>;
+		/* Verdin PWM_3_DSI (SODIMM 19) */
+		hpd-gpios = <&main_gpio1 17 GPIO_ACTIVE_HIGH>;
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&dsi_hdmi_bridge_out>;
+			};
+		};
+	};
+};
+
+&dsi_bridge {
+	status = "okay";
+};
+
+&dsi_bridge_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@1 {
+		reg = <1>;
+
+		dsi_bridge_out: endpoint {
+			remote-endpoint = <&dsi_hdmi_bridge_in>;
+		};
+	};
+};
+
+&dss {
+	status = "okay";
+};
+
+/* Verdin PWM_3_DSI (SODIMM 19) repurposed as HDMI HPD GPIO */
+&epwm1 {
+	status = "disabled";
+};
+
+/* Verdin I2C_1 */
+&main_i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hdmi@48 {
+		compatible = "lontium,lt8912b";
+		reg = <0x48>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_dsi1_bkl_en>;
+		/* Verdin GPIO_10_DSI (SODIMM 21) */
+		reset-gpios = <&main_gpio0 30 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				dsi_hdmi_bridge_in: endpoint {
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&dsi_bridge_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				dsi_hdmi_bridge_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
+};
-- 
2.53.0

Hi Vitor Soares,

On Wed, 06 May 2026 15:34:26 +0100, Vitor Soares wrote:
> 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 AM62 carrier board device
> trees to provide ready-to-use DTBs for the Dahlia and Development Board
> carriers, in both WiFi and non-WiFi SoM variants.
> 
> [...]

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/1] arm64: dts: ti: k3-am62-verdin: Add DSI to HDMI adapter overlay
      commit: 48f1f6f480741f014f3774096236fff91cdcc297

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
-- 
Regards,
Nishanth Menon
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