Add devicetree binding documentation for dwc3 glue driver implemented on Socionext UniPhier SoCs. Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx> --- .../devicetree/bindings/usb/dwc3-uniphier.txt | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/dwc3-uniphier.txt diff --git a/Documentation/devicetree/bindings/usb/dwc3-uniphier.txt b/Documentation/devicetree/bindings/usb/dwc3-uniphier.txt new file mode 100644 index 0000000..677e072 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/dwc3-uniphier.txt @@ -0,0 +1,58 @@ +UniPhier DWC3 glue layer + +This describes the devicetree bindings for dwc3-uniphier driver implemented on +Socionext UniPhier SoCs. + +Required properties: +- compatible: + - "socionext,uniphier-pxs2-dwc3" : For UniPhier PXs2 SoC + - "socionext,uniphier-ld20-dwc3" : For UniPhier LD20 SoC +- reg: Address and range of the glue logic +- clocks: List of phandles for the clocks, and the number of phandles depends + on SoC platform. + +Optional properties: +- resets: List of phandles for the resets, and the number of phandles depends + on SoC platform. +- nvmem-cells: Phandles to nvmem cell that contains the trimming data. + Available only for LD20, and if unspecified, default value is used. +- nvmem-cell-names: Should be the following names, which correspond to each + nvmem-cells. N is the number indicating a port of phy. + All of the 3 parameters associated with the following names are + required for each port, if any one is omitted, the trimming data + of the port will not be set at all. + - "rtermN", "sel_tN", "hs_iN" : Each cell name for phy parameters + +Required child node: +A child node must exist to represent the core DWC3 IP block. The name of +the node is not important. The content of the node is defined in dwc3.txt. + +Example: + + usb: usb@65b00000 { + compatible = "socionext,uniphier-ld20-dwc3"; + reg = <0x65b00000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + clocks = <&sys_clk 14>, <&sys_clk 16>, <&sys_clk 17>; + resets = <&sys_rst 12>, <&sys_rst 16>, <&sys_rst 17>, + <&sys_rst 18>, <&sys_rst 19>; + nvmem-cells = <&usb_rterm0>, <&usb_rterm1>, + <&usb_rterm2>, <&usb_rterm3>, + <&usb_sel_t0>, <&usb_sel_t1>, + <&usb_sel_t2>, <&usb_sel_t3>, + <&usb_hs_i0>, <&usb_hs_i0>, + <&usb_hs_i2>, <&usb_hs_i2>; + nvmem-cell-names = "rterm0", "rterm1", "rterm2", "rterm3", + "sel_t0", "sel_t1", "sel_t2", "sel_t3", + "hs_i0", "hs_i1", "hs_i2", "hs_i3"; + ranges; + + dwc3@65a00000 { + compatible = "snps,dwc3"; + reg = <0x65a00000 0xcd00>; + interrupt-names = "host"; + interrupts = <0 134 4>; + dr_mode = "host"; + }; + }; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html