arm64: dts: ti: k3-am62x-sk-common: Add HDMI support

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 AM625 SK and AM62-LP 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@ti.com>
Link: https://lore.kernel.org/r/20230809084559.17322-4-a-bhatia1@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index 540ed8a..677ff8d 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -114,6 +114,17 @@
                        clocks = <&tlv320_mclk>;
                };
        };
+
+       hdmi0: connector-hdmi {
+               compatible = "hdmi-connector";
+               label = "hdmi";
+               type = "a";
+               port {
+                       hdmi_connector_in: endpoint {
+                               remote-endpoint = <&sii9022_out>;
+                       };
+               };
+       };
 };
 
 &main_pmx0 {
@@ -226,6 +237,39 @@
                        AM62X_IOPAD(0x084, PIN_INPUT, 2) /* (L23/K20) GPMC0_ADVN_ALE.MCASP1_AXR2 */
                >;
        };
+
+       main_dss0_pins_default: main-dss0-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x100, PIN_OUTPUT, 0) /* (AC25) VOUT0_VSYNC */
+                       AM62X_IOPAD(0x0f8, PIN_OUTPUT, 0) /* (AB24) VOUT0_HSYNC */
+                       AM62X_IOPAD(0x104, PIN_OUTPUT, 0) /* (AC24) VOUT0_PCLK */
+                       AM62X_IOPAD(0x0fc, PIN_OUTPUT, 0) /* (Y20) VOUT0_DE */
+                       AM62X_IOPAD(0x0b8, PIN_OUTPUT, 0) /* (U22) VOUT0_DATA0 */
+                       AM62X_IOPAD(0x0bc, PIN_OUTPUT, 0) /* (V24) VOUT0_DATA1 */
+                       AM62X_IOPAD(0x0c0, PIN_OUTPUT, 0) /* (W25) VOUT0_DATA2 */
+                       AM62X_IOPAD(0x0c4, PIN_OUTPUT, 0) /* (W24) VOUT0_DATA3 */
+                       AM62X_IOPAD(0x0c8, PIN_OUTPUT, 0) /* (Y25) VOUT0_DATA4 */
+                       AM62X_IOPAD(0x0cc, PIN_OUTPUT, 0) /* (Y24) VOUT0_DATA5 */
+                       AM62X_IOPAD(0x0d0, PIN_OUTPUT, 0) /* (Y23) VOUT0_DATA6 */
+                       AM62X_IOPAD(0x0d4, PIN_OUTPUT, 0) /* (AA25) VOUT0_DATA7 */
+                       AM62X_IOPAD(0x0d8, PIN_OUTPUT, 0) /* (V21) VOUT0_DATA8 */
+                       AM62X_IOPAD(0x0dc, PIN_OUTPUT, 0) /* (W21) VOUT0_DATA9 */
+                       AM62X_IOPAD(0x0e0, PIN_OUTPUT, 0) /* (V20) VOUT0_DATA10 */
+                       AM62X_IOPAD(0x0e4, PIN_OUTPUT, 0) /* (AA23) VOUT0_DATA11 */
+                       AM62X_IOPAD(0x0e8, PIN_OUTPUT, 0) /* (AB25) VOUT0_DATA12 */
+                       AM62X_IOPAD(0x0ec, PIN_OUTPUT, 0) /* (AA24) VOUT0_DATA13 */
+                       AM62X_IOPAD(0x0f0, PIN_OUTPUT, 0) /* (Y22) VOUT0_DATA14 */
+                       AM62X_IOPAD(0x0f4, PIN_OUTPUT, 0) /* (AA21) VOUT0_DATA15 */
+                       AM62X_IOPAD(0x05c, PIN_OUTPUT, 1) /* (R24) GPMC0_AD8.VOUT0_DATA16 */
+                       AM62X_IOPAD(0x060, PIN_OUTPUT, 1) /* (R25) GPMC0_AD9.VOUT0_DATA17 */
+                       AM62X_IOPAD(0x064, PIN_OUTPUT, 1) /* (T25) GPMC0_AD10.VOUT0_DATA18 */
+                       AM62X_IOPAD(0x068, PIN_OUTPUT, 1) /* (R21) GPMC0_AD11.VOUT0_DATA19 */
+                       AM62X_IOPAD(0x06c, PIN_OUTPUT, 1) /* (T22) GPMC0_AD12.VOUT0_DATA20 */
+                       AM62X_IOPAD(0x070, PIN_OUTPUT, 1) /* (T24) GPMC0_AD13.VOUT0_DATA21 */
+                       AM62X_IOPAD(0x074, PIN_OUTPUT, 1) /* (U25) GPMC0_AD14.VOUT0_DATA22 */
+                       AM62X_IOPAD(0x078, PIN_OUTPUT, 1) /* (U24) GPMC0_AD15.VOUT0_DATA23 */
+               >;
+       };
 };
 
 &mcu_pmx0 {
@@ -313,6 +357,36 @@
                IOVDD-supply = <&vcc_3v3_sys>;
                DRVDD-supply = <&vcc_3v3_sys>;
        };
+
+       sii9022: bridge-hdmi@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@0 {
+                               reg = <0>;
+
+                               sii9022_in: endpoint {
+                                       remote-endpoint = <&dpi1_out>;
+                               };
+                       };
+
+                       port@1 {
+                               reg = <1>;
+
+                               sii9022_out: endpoint {
+                                       remote-endpoint = <&hdmi_connector_in>;
+                               };
+                       };
+               };
+       };
 };
 
 &sdhci0 {
@@ -410,3 +484,20 @@
        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@1 {
+               reg = <1>;
+
+               dpi1_out: endpoint {
+                       remote-endpoint = <&sii9022_in>;
+               };
+       };
+};