1* Renesas R-Car generation 3 USB 3.0 PHY 2 3This file provides information on what the device node for the R-Car generation 43 and RZ/G2 USB 3.0 PHY contain. 5If you want to enable spread spectrum clock (ssc), you should use USB_EXTAL 6instead of USB3_CLK. However, if you don't want to these features, you don't 7need this driver. 8 9Required properties: 10- compatible: "renesas,r8a774a1-usb3-phy" if the device is a part of an R8A774A1 11 SoC. 12 "renesas,r8a7795-usb3-phy" if the device is a part of an R8A7795 13 SoC. 14 "renesas,r8a7796-usb3-phy" if the device is a part of an R8A7796 15 SoC. 16 "renesas,r8a77965-usb3-phy" if the device is a part of an 17 R8A77965 SoC. 18 "renesas,rcar-gen3-usb3-phy" for a generic R-Car Gen3 or RZ/G2 19 compatible device. 20 21 When compatible with the generic version, nodes must list the 22 SoC-specific version corresponding to the platform first 23 followed by the generic version. 24 25- reg: offset and length of the USB 3.0 PHY register block. 26- clocks: A list of phandles and clock-specifier pairs. 27- clock-names: Name of the clocks. 28 - The funcional clock must be "usb3-if". 29 - The usb3's external clock must be "usb3s_clk". 30 - The usb2's external clock must be "usb_extal". If you want to use the ssc, 31 the clock-frequency must not be 0. 32- #phy-cells: see phy-bindings.txt in the same directory, must be <0>. 33 34Optional properties: 35- renesas,ssc-range: Enable/disable spread spectrum clock (ssc) by using 36 the following values as u32: 37 - 0 (or the property doesn't exist): disable the ssc 38 - 4980: enable the ssc as -4980 ppm 39 - 4492: enable the ssc as -4492 ppm 40 - 4003: enable the ssc as -4003 ppm 41 42Example (R-Car H3): 43 44 usb-phy@e65ee000 { 45 compatible = "renesas,r8a7795-usb3-phy", 46 "renesas,rcar-gen3-usb3-phy"; 47 reg = <0 0xe65ee000 0 0x90>; 48 clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>; 49 clock-names = "usb3-if", "usb3s_clk", "usb_extal"; 50 }; 51