arm64: dts: qcom: ipq6018: add usb3 DT description

Based on downstream codeaurora code.

Tested (USB2 only) on IPQ6010 based hardware.
Signed-off-by: Kathiravan T <kathirav@codeaurora.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
[bjorn: Changed dwc3 node name to usb, per binding]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/ebc2d340d566fa2d43127e253d5b8b134a87a78e.1630389452.git.baruch@tkos.co.il

arch/arm64/boot/dts/qcom/ipq6018.dtsi

@@ -671,6 +671,89 @@ dwc_1: usb@7000000 {
 			};
 		};
 
+		ssphy_0: ssphy@78000 {
+			compatible = "qcom,ipq6018-qmp-usb3-phy";
+			reg = <0x0 0x78000 0x0 0x1C4>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			#clock-cells = <1>;
+			ranges;
+
+			clocks = <&gcc GCC_USB0_AUX_CLK>,
+				 <&gcc GCC_USB0_PHY_CFG_AHB_CLK>, <&xo>;
+			clock-names = "aux", "cfg_ahb", "ref";
+
+			resets = <&gcc GCC_USB0_PHY_BCR>,
+				 <&gcc GCC_USB3PHY_0_PHY_BCR>;
+			reset-names = "phy","common";
+			status = "disabled";
+
+			usb0_ssphy: lane@78200 {
+				reg = <0x0 0x00078200 0x0 0x130>, /* Tx */
+				      <0x0 0x00078400 0x0 0x200>, /* Rx */
+				      <0x0 0x00078800 0x0 0x1F8>, /* PCS */
+				      <0x0 0x00078600 0x0 0x044>; /* PCS misc */
+				#phy-cells = <0>;
+				clocks = <&gcc GCC_USB0_PIPE_CLK>;
+				clock-names = "pipe0";
+				clock-output-names = "gcc_usb0_pipe_clk_src";
+			};
+		};
+
+		qusb_phy_0: qusb@79000 {
+			compatible = "qcom,ipq6018-qusb2-phy";
+			reg = <0x0 0x079000 0x0 0x180>;
+			#phy-cells = <0>;
+
+			clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
+				<&xo>;
+			clock-names = "cfg_ahb", "ref";
+
+			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
+			status = "disabled";
+		};
+
+		usb3: usb3@8A00000 {
+			compatible = "qcom,ipq6018-dwc3", "qcom,dwc3";
+			reg = <0x0 0x8AF8800 0x0 0x400>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+
+			clocks = <&gcc GCC_SYS_NOC_USB0_AXI_CLK>,
+				<&gcc GCC_USB0_MASTER_CLK>,
+				<&gcc GCC_USB0_SLEEP_CLK>,
+				<&gcc GCC_USB0_MOCK_UTMI_CLK>;
+			clock-names = "sys_noc_axi",
+				"master",
+				"sleep",
+				"mock_utmi";
+
+			assigned-clocks = <&gcc GCC_SYS_NOC_USB0_AXI_CLK>,
+					  <&gcc GCC_USB0_MASTER_CLK>,
+					  <&gcc GCC_USB0_MOCK_UTMI_CLK>;
+			assigned-clock-rates = <133330000>,
+					       <133330000>,
+					       <20000000>;
+
+			resets = <&gcc GCC_USB0_BCR>;
+			status = "disabled";
+
+			dwc_0: usb@8A00000 {
+				compatible = "snps,dwc3";
+				reg = <0x0 0x8A00000 0x0 0xcd00>;
+				interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
+				phys = <&qusb_phy_0>, <&usb0_ssphy>;
+				phy-names = "usb2-phy", "usb3-phy";
+				tx-fifo-resize;
+				snps,is-utmi-l1-suspend;
+				snps,hird-threshold = /bits/ 8 <0x0>;
+				snps,dis_u2_susphy_quirk;
+				snps,dis_u3_susphy_quirk;
+				snps,ref-clock-period-ns = <0x32>;
+				dr_mode = "host";
+			};
+		};
 	};
 
 	wcss: wcss-smp2p {