ARM: dts: stm32: enable display on stm32mp157c-dk1 board

Enable hdmi bridge sii9022 & display controller.
Signed-off-by: NYannick Fertré <yannick.fertre@st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157a-dk1.dts

@@ -90,6 +90,32 @@
 	status = "okay";
 	/delete-property/dmas;
 	/delete-property/dma-names;
+
+	hdmi-transmitter@39 {
+		compatible = "sil,sii9022";
+		reg = <0x39>;
+		iovcc-supply = <&v3v3_hdmi>;
+		cvcc12-supply = <&v1v2_hdmi>;
+		reset-gpios = <&gpioa 10 GPIO_ACTIVE_LOW>;
+		interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+		interrupt-parent = <&gpiog>;
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&ltdc_pins_a>;
+		pinctrl-1 = <&ltdc_pins_sleep_a>;
+		status = "okay";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				sii9022_in: endpoint {
+					remote-endpoint = <&ltdc_ep0_out>;
+				};
+			};
+		};
+	};
 };
 
 &i2c4 {
@@ -249,6 +275,20 @@
 	status = "okay";
 };
 
+&ltdc {
+	status = "okay";
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ltdc_ep0_out: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&sii9022_in>;
+		};
+	};
+};
+
 &rng1 {
 	status = "okay";
 };