[PATCH v2] ARM: dts: imx53-qsb: add support for the HDMI expander

[Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>]

Add support for the MCIMXHDMICARD expansion card attached to the iMX53
QSB / QSRB platforms. This enables HDMI output on those devices.

Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
Changes in v2:
- Fixed commit subject to mention imx53-qsb (Fabio)
- Fixed epansion -> expansion typo (Fabio)
- Link to v1: https://lore.kernel.org/r/20240206-imx53-qsb-hdmi-v1-1-e798eb1181c5@xxxxxxxxxx
---
 arch/arm/boot/dts/nxp/imx/Makefile            |  4 ++
 arch/arm/boot/dts/nxp/imx/imx53-qsb-hdmi.dtso | 87 +++++++++++++++++++++++++++
 2 files changed, 91 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/Makefile b/arch/arm/boot/dts/nxp/imx/Makefile
index a724d1a7a9a0..24654deba303 100644
--- a/arch/arm/boot/dts/nxp/imx/Makefile
+++ b/arch/arm/boot/dts/nxp/imx/Makefile
@@ -45,7 +45,9 @@ dtb-$(CONFIG_SOC_IMX53) += \
 	imx53-mba53.dtb \
 	imx53-ppd.dtb \
 	imx53-qsb.dtb \
+	imx53-qsb-hdmi.dtb \
 	imx53-qsrb.dtb \
+	imx53-qsrb-hdmi.dtb \
 	imx53-sk-imx53.dtb \
 	imx53-sk-imx53-atm0700d4-lvds.dtb \
 	imx53-sk-imx53-atm0700d4-rgb.dtb \
@@ -54,6 +56,8 @@ dtb-$(CONFIG_SOC_IMX53) += \
 	imx53-tx53-x13x.dtb \
 	imx53-usbarmory.dtb \
 	imx53-voipac-bsb.dtb
+imx53-qsb-hdmi-dtbs := imx53-qsb.dtb imx53-qsb-hdmi.dtbo
+imx53-qsrb-hdmi-dtbs := imx53-qsrb.dtb imx53-qsb-hdmi.dtbo
 dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6dl-alti6p.dtb \
 	imx6dl-apf6dev.dtb \
diff --git a/arch/arm/boot/dts/nxp/imx/imx53-qsb-hdmi.dtso b/arch/arm/boot/dts/nxp/imx/imx53-qsb-hdmi.dtso
new file mode 100644
index 000000000000..c84e9b052527
--- /dev/null
+++ b/arch/arm/boot/dts/nxp/imx/imx53-qsb-hdmi.dtso
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * DT overlay for MCIMXHDMICARD as used with the iMX53 QSB or QSRB boards
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	/delete-node/ panel;
+
+	hdmi: connector-hdmi {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&sii9022_out>;
+			};
+		};
+	};
+
+	reg_1p2v: regulator-1p2v {
+		compatible = "regulator-fixed";
+		regulator-name = "1P2V";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-always-on;
+		vin-supply = <&reg_3p2v>;
+	};
+};
+
+&display0 {
+	status = "okay";
+};
+
+&display0 {
+	port@1 {
+		display0_out: endpoint {
+			remote-endpoint = <&sii9022_in>;
+		};
+	};
+};
+
+&i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	sii9022: bridge-hdmi@39 {
+		compatible = "sil,sii9022";
+		reg = <0x39>;
+		reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+		interrupts-extended = <&gpio3 31 IRQ_TYPE_LEVEL_LOW>;
+		iovcc-supply = <&reg_3p2v>;
+		#sound-dai-cells = <0>;
+		sil,i2s-data-lanes = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				sii9022_in: endpoint {
+					remote-endpoint = <&display0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				sii9022_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
+};
+
+&tve {
+	status = "disabled";
+};

---
base-commit: 0dd3ee31125508cd67f7e7172247f05b7fd1753a
change-id: 20240206-imx53-qsb-hdmi-a4b6032e061e

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>