[PATCH v4 3/6] arm64: dts: imx8mm: imx8mp: Add HDMI DTOs for Data Modul i.MX8M Mini and Plus eDM SBC

[Marek Vasut <marex@nabladev.com>]

Add DT overlay for the DSI-to-HDMI adapter eDM-MOD-iMX8Mm-HDMI populated
with Lontium LT9611 bridge. This adapter can be optionally populated onto
the eDM SBC.

Signed-off-by: Marek Vasut <marex@nabladev.com>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Frank Li <Frank.Li@nxp.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: devicetree@vger.kernel.org
Cc: imx@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
V2: Deduplicate the DTOs further
V3: New patch split from the original megapatch
V4: Rebase on next-20260703
---
 arch/arm64/boot/dts/freescale/Makefile        | 12 +++
 ...l-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi | 94 +++++++++++++++++++
 ...l-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso | 17 ++++
 ...l-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso | 17 ++++
 4 files changed, 140 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index b41eaba832f5c..54108037da8db 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -120,6 +120,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8dxp-tqma8xdp-mba8xx.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8dxp-tqma8xdps-mb-smarc-2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-beacon-kit.dtb
 
+imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \
+	imx8mm-data-modul-edm-sbc.dtb \
+	imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
+
 imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01-dtbs := \
 	imx8mm-data-modul-edm-sbc.dtb \
 	imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtbo
@@ -153,6 +157,8 @@ imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900-dtbs := \
 	imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900.dtbo
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-data-modul-edm-sbc.dtb \
+			  imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \
+			  imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \
 			  imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
 			  imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtbo \
 			  imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g101ice-l01.dtb \
@@ -294,6 +300,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-beacon-kit.dtb
 DTC_FLAGS_imx8mp-cubox-m := -@
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-cubox-m.dtb
 
+imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \
+	imx8mp-data-modul-edm-sbc.dtb \
+	imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
+
 imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01-dtbs := \
 	imx8mp-data-modul-edm-sbc.dtb \
 	imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtbo
@@ -369,6 +379,8 @@ imx8mp-data-modul-edm-sbc-overlay-edm-sbc-imx8mp-rev902-dtbs := \
 	imx8mp-data-modul-edm-sbc-overlay-edm-sbc-imx8mp-rev902.dtbo
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-data-modul-edm-sbc.dtb \
+			  imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \
+			  imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \
 			  imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
 			  imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtbo \
 			  imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g101ice-l01.dtb \
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi
new file mode 100644
index 0000000000000..c0f2aa462104f
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2026 Marek Vasut
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+&{/} {
+	hdmi-out {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&lt9611_out>;
+			};
+		};
+	};
+};
+
+&i2c_display {	/* Display connector I2C */
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	lt9611_codec: hdmi-bridge@3b {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_panel_expansion>;
+		compatible = "lontium,lt9611";
+		reg = <0x3b>;
+		vcc-supply = <&buck4_reg>;	/* X400 pin 55, +3V3_S0 */
+		vdd-supply = <&buck5_reg>;	/* X400 pin 51, +1V8_S0 */
+
+		/* Audio I2S not described */
+		#sound-dai-cells = <1>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lt9611_a: endpoint {
+					remote-endpoint = <&mipi_dsi_bridge1_out>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				lt9611_out: endpoint {
+					remote-endpoint = <&hdmi_con>;
+				};
+			};
+		};
+	};
+
+	eeprom@50 {
+		compatible = "atmel,24c02";
+		reg = <0x50>;
+		pagesize = <16>;
+	};
+};
+
+&iomuxc {
+	/* Free &pinctrl_panel_expansion from hog for lt9611_codec above */
+	pinctrl-0 = <&pinctrl_hog_misc>, <&pinctrl_hog_feature>,
+		    <&pinctrl_hog_panel>, <&pinctrl_hog_sbc>;
+};
+
+&mipi_dsi {
+	/* HDMI 148.5 MHz x2 (DDR) x3 (24bpp / 8) */
+	samsung,burst-clock-frequency = <891000000>;
+	samsung,esc-clock-frequency = <10000000>;
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@1 {
+			reg = <1>;
+
+			mipi_dsi_bridge1_out: endpoint {
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				/* Clock and data lanes have DN/DP swapped */
+				lane-polarities = <1 1 1 1 1>;
+				remote-endpoint = <&lt9611_a>;
+			};
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso
new file mode 100644
index 0000000000000..334ba299a3541
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include "imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi"
+
+&lt9611_codec {
+	interrupts-extended = <&gpio2 3 IRQ_TYPE_EDGE_FALLING>;
+	reset-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
+};
+
+&lcdif {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso
new file mode 100644
index 0000000000000..d8114fd869b54
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtso
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include "imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtsi"
+
+&lt9611_codec {
+	interrupts-extended = <&gpio4 19 IRQ_TYPE_EDGE_FALLING>;
+	reset-gpios = <&gpio4 0 GPIO_ACTIVE_HIGH>;
+};
+
+&lcdif1 {
+	status = "okay";
+};
-- 
2.53.0