arm64: dts: ti: k3-am642-sk: Enable USB Super-Speed HOST port

Enable USB Super-Speed HOST port.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210603142251.14563-5-kishon@ti.com

arch/arm64/boot/dts/ti/k3-am642-sk.dts

@@ -5,6 +5,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/mux/ti-serdes.h>
+#include <dt-bindings/phy/phy.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/net/ti-dp83867.h>
 #include "k3-am642.dtsi"
@@ -85,6 +87,12 @@ AM64X_IOPAD(0x0298, PIN_INPUT, 0) /* (D19) MMC1_SDCD */
 		>;
 	};
 
+	main_usb0_pins_default: main-usb0-pins-default {
+		pinctrl-single,pins = <
+			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
+		>;
+	};
+
 	main_i2c1_pins_default: main-i2c1-pins-default {
 		pinctrl-single,pins = <
 			AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */
@@ -235,6 +243,33 @@ &sdhci1 {
 	disable-wp;
 };
 
+&serdes_ln_ctrl {
+	idle-states = <AM64_SERDES0_LANE0_USB>;
+};
+
+&serdes0 {
+	serdes0_usb_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <1>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_USB3>;
+		resets = <&serdes_wiz0 1>;
+	};
+};
+
+&usbss0 {
+	ti,vbus-divider;
+};
+
+&usb0 {
+	dr_mode = "host";
+	maximum-speed = "super-speed";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_usb0_pins_default>;
+	phys = <&serdes0_usb_link>;
+	phy-names = "cdns3,usb3-phy";
+};
+
 &cpsw3g {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mdio1_pins_default