From: Vitor Soares <ivitro@gmail.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Francesco Dolcini <francesco@dolcini.it>
Cc: Vitor Soares <vitor.soares@toradex.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1] arm64: dts: ti: k3-am62-verdin: Add DSI to HDMI adapter overlay
Date: Wed, 6 May 2026 15:34:26 +0100 [thread overview]
Message-ID: <20260506143427.348806-2-ivitro@gmail.com> (raw)
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
reply other threads:[~2026-05-06 14:34 UTC|newest]
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