[PATCH 2/3] arm64: dts: ti: k3-am62a7-sk: Add HDMI support

[Aradhya Bhatia]

The DSS outputs DPI signals via its second video port (VP2). The DPI
output from DSS is 24 bits (RGB888) and is forwarded to an HDMI
transmitter (SIL9022) on the board.

Add pinmux info for DSS DPI output.

Add DT nodes for SIL9022 HDMI transmitter (TX), and the HDMI connector
on the AM62A7-SK platforms.

Additionally, connect the output of DSS (VP2) with input of the HDMI TX,
and the output of HDMI TX to the input of the HDMI connector.

Signed-off-by: Aradhya Bhatia <a-bhatia1 at ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 92 +++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index 7b7142586295..c9eb2a9aef39 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -132,6 +132,18 @@ tlv320_mclk: clk-0 {
 		clock-frequency = <12288000>;
 	};
 
+	hdmi0: connector-hdmi {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&sii9022_out>;
+			};
+		};
+	};
+
 	codec_audio: sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "AM62Ax-SKEVM";
@@ -181,6 +193,39 @@ &wkup_uart0 {
 };
 
 &main_pmx0 {
+	main_dss0_pins_default: main-dss0-default-pins {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x100, PIN_OUTPUT, 0) /* (V17) VOUT0_VSYNC */
+			AM62AX_IOPAD(0x0f8, PIN_OUTPUT, 0) /* (T18) VOUT0_HSYNC */
+			AM62AX_IOPAD(0x104, PIN_OUTPUT, 0) /* (AA22) VOUT0_PCLK */
+			AM62AX_IOPAD(0x0fc, PIN_OUTPUT, 0) /* (U17) VOUT0_DE */
+			AM62AX_IOPAD(0x0b8, PIN_OUTPUT, 0) /* (U22) VOUT0_DATA0 */
+			AM62AX_IOPAD(0x0bc, PIN_OUTPUT, 0) /* (U21) VOUT0_DATA1 */
+			AM62AX_IOPAD(0x0c0, PIN_OUTPUT, 0) /* (U20) VOUT0_DATA2 */
+			AM62AX_IOPAD(0x0c4, PIN_OUTPUT, 0) /* (U19) VOUT0_DATA3 */
+			AM62AX_IOPAD(0x0c8, PIN_OUTPUT, 0) /* (T19) VOUT0_DATA4 */
+			AM62AX_IOPAD(0x0cc, PIN_OUTPUT, 0) /* (U18) VOUT0_DATA5 */
+			AM62AX_IOPAD(0x0d0, PIN_OUTPUT, 0) /* (V22) VOUT0_DATA6 */
+			AM62AX_IOPAD(0x0d4, PIN_OUTPUT, 0) /* (V21) VOUT0_DATA7 */
+			AM62AX_IOPAD(0x0d8, PIN_OUTPUT, 0) /* (V19) VOUT0_DATA8 */
+			AM62AX_IOPAD(0x0dc, PIN_OUTPUT, 0) /* (V18) VOUT0_DATA9 */
+			AM62AX_IOPAD(0x0e0, PIN_OUTPUT, 0) /* (W22) VOUT0_DATA10 */
+			AM62AX_IOPAD(0x0e4, PIN_OUTPUT, 0) /* (W21) VOUT0_DATA11 */
+			AM62AX_IOPAD(0x0e8, PIN_OUTPUT, 0) /* (W20) VOUT0_DATA12 */
+			AM62AX_IOPAD(0x0ec, PIN_OUTPUT, 0) /* (W19) VOUT0_DATA13 */
+			AM62AX_IOPAD(0x0f0, PIN_OUTPUT, 0) /* (Y21) VOUT0_DATA14 */
+			AM62AX_IOPAD(0x0f4, PIN_OUTPUT, 0) /* (Y22) VOUT0_DATA15 */
+			AM62AX_IOPAD(0x05c, PIN_OUTPUT, 1) /* (P22) GPMC0_AD8.VOUT0_DATA16 */
+			AM62AX_IOPAD(0x060, PIN_OUTPUT, 1) /* (R19) GPMC0_AD9.VOUT0_DATA17 */
+			AM62AX_IOPAD(0x064, PIN_OUTPUT, 1) /* (R20) GPMC0_AD10.VOUT0_DATA18 */
+			AM62AX_IOPAD(0x068, PIN_OUTPUT, 1) /* (R22) GPMC0_AD11.VOUT0_DATA19 */
+			AM62AX_IOPAD(0x06c, PIN_OUTPUT, 1) /* (T22) GPMC0_AD12.VOUT0_DATA20 */
+			AM62AX_IOPAD(0x070, PIN_OUTPUT, 1) /* (R21) GPMC0_AD13.VOUT0_DATA21 */
+			AM62AX_IOPAD(0x074, PIN_OUTPUT, 1) /* (T20) GPMC0_AD14.VOUT0_DATA22 */
+			AM62AX_IOPAD(0x078, PIN_OUTPUT, 1) /* (T21) GPMC0_AD15.VOUT0_DATA23 */
+		>;
+	};
+
 	main_uart0_pins_default: main-uart0-default-pins {
 		pinctrl-single,pins = <
 			AM62AX_IOPAD(0x1c8, PIN_INPUT, 0) /* (E14) UART0_RXD */
@@ -466,6 +511,36 @@ exp2: gpio at 23 {
 				  "CSI_EN", "AUTO_100M_1000M_CONFIG",
 				  "CSI_VLDO_SEL", "SoC_WLAN_SDIO_RST";
 	};
+
+	sii9022: bridge-hdmi at 3b {
+		compatible = "sil,sii9022";
+		reg = <0x3b>;
+		interrupt-parent = <&exp1>;
+		interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+		#sound-dai-cells = <0>;
+		sil,i2s-data-lanes = < 0 >;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				sii9022_in: endpoint {
+					remote-endpoint = <&dpi1_out>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				sii9022_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
 };
 
 &main_i2c2 {
@@ -583,3 +658,20 @@ &mcasp1 {
 	tx-num-evt = <32>;
 	rx-num-evt = <32>;
 };
+
+&dss {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_dss0_pins_default>;
+};
+
+&dss_ports {
+	/* VP2: DPI Output */
+	port at 1 {
+		reg = <1>;
+
+		dpi1_out: endpoint {
+			remote-endpoint = <&sii9022_in>;
+		};
+	};
+};
-- 
2.34.1