[PATCH v3 3/6] arm64: dts: imx8mm: imx8mp: Add HDMI DTOs for Data Modul i.MX8M Mini and Plus eDM SBC

From: Marek Vasut

Date: Tue Apr 07 2026 - 17:19:09 EST

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@xxxxxxxxxxxx>
---
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: Frank Li <Frank.Li@xxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: imx@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
V2: Deduplicate the DTOs further
V3: New patch split from the original megapatch
---
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 09ea330884ad4..679346cd35d95 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -116,6 +116,10 @@ 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
@@ -149,6 +153,8 @@ imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900-dtbs := \
imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900.dtbo

dtb-$(CONFIG_ARCH_MXC) += imx8mm-data-modul-edm-sbc.dtb \
+ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \
+ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtbo \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g101ice-l01.dtb \
@@ -288,6 +294,10 @@ dtb-$(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
@@ -363,6 +373,8 @@ 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