Add dt-binding for MediaTek xHCI host controller
Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- .../usb/mediatek,mtk-xhci.txt | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt
diff --git a/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt new file mode 100644 index 0000000000..0447468a2d --- /dev/null +++ b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt @@ -0,0 +1,40 @@ +MediaTek xHCI + +The device node for USB3 host controller on MediaTek SoCs. + +Required properties: + - compatible : should be "mediatek,mtk-xhci" + - reg : specifies physical base address and size of the registers + - reg-names: should be "mac" for xHCI MAC and "ippc" for IP port control + - power-domains : a phandle to USB power domain node to control USB's + MTCMOS + - vusb33-supply : regulator of USB avdd3.3v + + - clocks : a list of phandle + clock-specifier pairs, one for each + entry in clock-names + - clock-names : must contain + "sys_ck": controller clock used by normal mode, + the following ones are optional: + "ref_ck": reference clock used by low power mode etc, + "mcu_ck": mcu_bus clock for register access, + "dma_ck": dma_bus clock for data transfer by DMA, + "xhci_ck": controller clock + + - phys : list of all the USB PHYs on this HCD + - phy-names: name specifier for the USB PHY + +Optional properties: + - vbus-supply : reference to the VBUS regulator; + +Example: +xhci: usb@1a0c0000 { + compatible = "mediatek,mt7629-xhci", "mediatek,mtk-xhci"; + reg = <0x1a0c0000 0x1000>, <0x1a0c3e00 0x0100>; + reg-names = "mac", "ippc"; + power-domains = <&scpsys MT7629_POWER_DOMAIN_HIF1>; + clocks = <&ssusbsys CLK_SSUSB_SYS_EN>, <&ssusbsys CLK_SSUSB_REF_EN>, + <&ssusbsys CLK_SSUSB_MCU_EN>, <&ssusbsys CLK_SSUSB_DMA_EN>; + clock-names = "sys_ck", "ref_ck", "mcu_ck", "dma_ck"; + phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0 PHY_TYPE_USB3>; + status = "disabled"; +};