arm64: dts: ti: k3-am69-sk: Add DP and HDMI support

AM69 starter kit features an HDMI port and an eDP port.

Add assigned clocks for DSS, DT node for DisplayPort PHY,
pinmux for HDMI hotplug and power down, mcu_i2c1 and dss_vout
for HDMI.
Also enable Serdes4 settings for DP display.

Add the endpoint nodes to describe connection from:
DSS => MHDP => DisplayPort connector
DSS => TI TFP410 DPI-to-DVI Bridge => HDMI connector

Signed-off-by: Dasnavis Sabiya <[email protected]>
[[email protected]: Fix dvi-bridge, dss, mhdp and serdes-refclk]
Signed-off-by: Jayesh Choudhary <[email protected]>
Reviewed-by: Aradhya Bhatia <[email protected]>
Reviewed-by: Roger Quadros <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vignesh Raghavendra <[email protected]>

Author: Dasnavis Sabiya

arch/arm64/boot/dts/ti/k3-am69-sk.dts

@@ -251,6 +251,76 @@
 		states = <1800000 0x0>,
 			 <3300000 0x1>;
 	};
+
+	dp0_pwr_3v3: regulator-dp0-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "dp0-pwr";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&dp_pwr_en_pins_default>;
+		gpio = <&main_gpio0 4 0>;	/* DP0_3V3 _EN */
+		enable-active-high;
+	};
+
+	dp0: connector-dp0 {
+		compatible = "dp-connector";
+		label = "DP0";
+		type = "full-size";
+		dp-pwr-supply = <&dp0_pwr_3v3>;
+
+		port {
+			dp0_connector_in: endpoint {
+				remote-endpoint = <&dp0_out>;
+			};
+		};
+	};
+
+	connector-hdmi {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmi_hpd_pins_default>;
+		ddc-i2c-bus = <&mcu_i2c1>;
+		hpd-gpios = <&main_gpio0 0 GPIO_ACTIVE_HIGH>;	/* HDMI_HPD */
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&tfp410_out>;
+			};
+		};
+	};
+
+	bridge-dvi {
+		compatible = "ti,tfp410";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmi_pdn_pins_default>;
+		powerdown-gpios = <&wkup_gpio0 14 GPIO_ACTIVE_LOW>;	/* HDMI_PDn */
+		ti,deskew = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				tfp410_in: endpoint {
+					remote-endpoint = <&dpi1_out0>;
+					pclk-sample = <1>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				tfp410_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
 };
 
 &main_pmx0 {
@@ -308,6 +378,57 @@
 			J784S4_IOPAD(0x004, PIN_INPUT, 7) /* (AG36) MCAN12_TX.GPIO0_1 */
 		>;
 	};
+
+	dp0_pins_default: dp0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x014, PIN_INPUT, 13) /* (AG33) MCAN14_TX.DP0_HPD */
+		>;
+	};
+
+	dp_pwr_en_pins_default: dp-pwr-en-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x010, PIN_INPUT, 7) /* (AH33) MCAN13_RX.GPIO0_4 */
+		>;
+	};
+
+	dss_vout0_pins_default: dss-vout0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x074, PIN_OUTPUT, 2) /* (AC33) MCAN2_TX.VOUT0_DATA0 */
+			J784S4_IOPAD(0x070, PIN_OUTPUT, 2) /* (AH38) MCAN1_RX.VOUT0_DATA1 */
+			J784S4_IOPAD(0x07c, PIN_OUTPUT, 2) /* (AJ38) MCASP0_AXR3.VOUT0_DATA2 */
+			J784S4_IOPAD(0x068, PIN_OUTPUT, 2) /* (AE38) MCAN0_RX.VOUT0_DATA3 */
+			J784S4_IOPAD(0x064, PIN_OUTPUT, 2) /* (AF38) MCAN0_TX.VOUT0_DATA4 */
+			J784S4_IOPAD(0x060, PIN_OUTPUT, 2) /* (AE36) MCASP2_AXR1.VOUT0_DATA5 */
+			J784S4_IOPAD(0x05c, PIN_OUTPUT, 2) /* (AC36) MCASP2_AXR0.VOUT0_DATA6 */
+			J784S4_IOPAD(0x058, PIN_OUTPUT, 2) /* (AE37) MCASP2_AFSX.VOUT0_DATA7 */
+			J784S4_IOPAD(0x054, PIN_OUTPUT, 2) /* (AD37) MCASP2_ACLKX.VOUT0_DATA8 */
+			J784S4_IOPAD(0x050, PIN_OUTPUT, 2) /* (AC37) MCASP1_AXR2.VOUT0_DATA9 */
+			J784S4_IOPAD(0x04c, PIN_OUTPUT, 2) /* (AC32) MCASP1_AXR1.VOUT0_DATA10 */
+			J784S4_IOPAD(0x048, PIN_OUTPUT, 2) /* (AK33) MCASP0_AXR2.VOUT0_DATA11 */
+			J784S4_IOPAD(0x044, PIN_OUTPUT, 2) /* (AG37) MCASP0_AXR1.VOUT0_DATA12 */
+			J784S4_IOPAD(0x040, PIN_OUTPUT, 2) /* (AF37) MCASP0_AXR0.VOUT0_DATA13 */
+			J784S4_IOPAD(0x03c, PIN_OUTPUT, 2) /* (AK38) MCASP0_AFSX.VOUT0_DATA14 */
+			J784S4_IOPAD(0x038, PIN_OUTPUT, 2) /* (AK35) MCASP0_ACLKX.VOUT0_DATA15 */
+			J784S4_IOPAD(0x0c8, PIN_OUTPUT, 2) /* (AJ32) EXT_REFCLK1.VOUT0_DATA16 */
+			J784S4_IOPAD(0x030, PIN_OUTPUT, 2) /* (AK37) GPIO0_12.VOUT0_DATA17 */
+			J784S4_IOPAD(0x02c, PIN_OUTPUT, 2) /* (AL32) GPIO0_11.VOUT0_DATA18 */
+			J784S4_IOPAD(0x028, PIN_OUTPUT, 2) /* (AE33) MCAN16_RX.VOUT0_DATA19 */
+			J784S4_IOPAD(0x024, PIN_OUTPUT, 2) /* (AH34) MCAN16_TX.VOUT0_DATA20 */
+			J784S4_IOPAD(0x020, PIN_OUTPUT, 2) /* (AJ35) MCAN15_RX.VOUT0_DATA21 */
+			J784S4_IOPAD(0x01c, PIN_OUTPUT, 2) /* (AG34) MCAN15_TX.VOUT0_DATA22 */
+			J784S4_IOPAD(0x018, PIN_OUTPUT, 2) /* (AK36) MCAN14_RX.VOUT0_DATA23 */
+			J784S4_IOPAD(0x084, PIN_OUTPUT, 2) /* (AG38) MCASP0_AXR5.VOUT0_DE */
+			J784S4_IOPAD(0x080, PIN_OUTPUT, 2) /* (AK34) MCASP0_AXR4.VOUT0_HSYNC */
+			J784S4_IOPAD(0x078, PIN_OUTPUT, 2) /* (AH37) MCAN2_RX.VOUT0_PCLK */
+			J784S4_IOPAD(0x088, PIN_OUTPUT, 2) /* (AF36) MCASP0_AXR6.VOUT0_VSYNC */
+		>;
+	};
+
+	hdmi_hpd_pins_default: hdmi-hpd-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x000, PIN_INPUT, 7) /* (AN35) EXTINTN.GPIO0_0 */
+		>;
+	};
 };
 
 &wkup_pmx2 {
@@ -382,6 +503,21 @@
 			J784S4_WKUP_IOPAD(0x11c, PIN_INPUT, 7) /* (M34) WKUP_GPIO0_67 */
 		>;
 	};
+
+	mcu_i2c1_pins_default: mcu-i2c1-default-pins {
+		pinctrl-single,pins = <
+			/* (L35) WKUP_GPIO0_8.MCU_I2C1_SCL */
+			J784S4_WKUP_IOPAD(0x078, PIN_INPUT_PULLUP, 0)
+			/* (L34) WKUP_GPIO0_9.MCU_I2C1_SDA */
+			J784S4_WKUP_IOPAD(0x07c, PIN_INPUT_PULLUP, 0)
+		>;
+	};
+
+	hdmi_pdn_pins_default: hdmi-pdn-default-pins {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x090, PIN_INPUT, 7) /* (H37) WKUP_GPIO0_14 */
+		>;
+	};
 };
 
 &wkup_pmx3 {
@@ -666,3 +802,99 @@
 	memory-region = <&c71_3_dma_memory_region>,
 			<&c71_3_memory_region>;
 };
+
+&wkup_gpio_intr {
+	status = "okay";
+};
+
+&mcu_i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_i2c1_pins_default>;
+	clock-frequency = <100000>;
+};
+
+&serdes_refclk {
+	status = "okay";
+	clock-frequency = <100000000>;
+};
+
+&dss {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&dss_vout0_pins_default>;
+	assigned-clocks = <&k3_clks 218 2>,
+			  <&k3_clks 218 5>,
+			  <&k3_clks 218 14>,
+			  <&k3_clks 218 18>;
+	assigned-clock-parents = <&k3_clks 218 3>,
+				 <&k3_clks 218 7>,
+				 <&k3_clks 218 16>,
+				 <&k3_clks 218 22>;
+};
+
+&serdes_wiz4 {
+	status = "okay";
+};
+
+&serdes4 {
+	status = "okay";
+	serdes4_dp_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <4>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_DP>;
+		resets = <&serdes_wiz4 1>, <&serdes_wiz4 2>,
+			 <&serdes_wiz4 3>, <&serdes_wiz4 4>;
+	};
+};
+
+&mhdp {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&dp0_pins_default>;
+	phys = <&serdes4_dp_link>;
+	phy-names = "dpphy";
+};
+
+&dss_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* DP */
+	port@0 {
+		reg = <0>;
+
+		dpi0_out: endpoint {
+			remote-endpoint = <&dp0_in>;
+		};
+	};
+
+	/* HDMI */
+	port@1 {
+		reg = <1>;
+
+		dpi1_out0: endpoint {
+			remote-endpoint = <&tfp410_in>;
+		};
+	};
+};
+
+&dp0_ports {
+
+	port@0 {
+		reg = <0>;
+
+		dp0_in: endpoint {
+			remote-endpoint = <&dpi0_out>;
+		};
+	};
+
+	port@4 {
+		reg = <4>;
+
+		dp0_out: endpoint {
+			remote-endpoint = <&dp0_connector_in>;
+		};
+	};
+};