Add dt-binding for MediaTek USB3 DRD Driver
Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v5~v7: no changes
v4: Add support host mode, introduce some new properties and subnode
v2~v3: no changes --- doc/device-tree-bindings/usb/mediatek,mtu3.txt | 79 ++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 doc/device-tree-bindings/usb/mediatek,mtu3.txt
diff --git a/doc/device-tree-bindings/usb/mediatek,mtu3.txt b/doc/device-tree-bindings/usb/mediatek,mtu3.txt new file mode 100644 index 0000000..ab877bf --- /dev/null +++ b/doc/device-tree-bindings/usb/mediatek,mtu3.txt @@ -0,0 +1,79 @@ +The device node for Mediatek USB3 DRD controller + +Required properties: + - compatible : should be "mediatek,<soc-model>-mtu3", "mediatek,mtu3", + soc-model is the name of SoC, such as mt8512 etc, + when using "mediatek,mtu3" compatible string, you need SoC specific + ones in addition, one of: + - "mediatek,mt8512-mtu3" + - reg : specifies physical base address and size of the registers + - reg-names: should be + - "ippc" : IP Port Control + - power-domains : a phandle to USB power domain node to control USB's MTCMOS + - clocks : a list of phandle + clock-specifier pairs, one for each + entry in clock-names + - clock-names : must contain "sys_ck" for clock of controller, + the following clocks are optional: + "ref_ck", "mcu_ck", "dma_ck" and "xhci_ck"; + - phys : list of all the USB PHYs on this HCD + - #address-cells, #size-cells : used for sub-nodes with 'reg' property + - ranges : allows valid 1:1 translation between child's address space and + parent's address space + +Optional properties: + - vusb33-supply : regulator of USB AVDD3.3v + - vbus-supply : regulator of VBUS 5v, needed when supports host mode. + +Sub-nodes: +Required properties: + - compatible : should be "mediatek,ssusb" + - reg : specifies physical base address and size of the registers + - reg-names: should be + - "mac" : SSUSB MAC, include xHCI and device + - interrupts : interrupt used by xHCI or device + - dr_mode : should be one of "host" or "peripheral", + see : usb/generic.txt + +Optional properties: + - pinctrl-names : a pinctrl state named "default" is optional + - pinctrl-0 : pin control group + See: pinctrl/pinctrl-bindings.txt + + - device mode: + - maximum-speed : valid arguments are "full-speed", "high-speed", + "super-speed" and "super-speed-plus", + see: usb/generic.txt + - mediatek,force-vbus : force vbus as valid by SW + + - host mode (dr_mode is "host"): + - mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0, + bit1 for u3port1, ... etc; + +Example: +usb3: usb@11213e00 { + compatible = "mediatek,mt8512-mtu3", "mediatek,mtu3"; + reg = <0x11213e00 0x0100>; + reg-names = "ippc"; + phys = <&u2port0 PHY_TYPE_USB2>, <&u2port1 PHY_TYPE_USB2>; + power-domains = <&scpsys MT8512_POWER_DOMAIN_USB>; + clocks = <&infracfg CLK_INFRA_USB_SYS>, + <&topckgen CLK_TOP_SSUSB_TOP_CK_EN>, + <&infracfg CLK_INFRA_ICUSB>; + clock-names = "sys_ck", "ref_ck", "mcu_ck"; + vusb33-supply = <reg_3p3v>; + vbus-supply = <&usb_p0_vbus>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + status = "disabled"; + + ssusb: usb@11210000 { + compatible = "mediatek,ssusb"; + reg = <0x11210000 0x3e00>; + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_LOW>; + reg-names = "mac"; + dr_mode = "peripheral"; + maximum-speed = "high-speed"; + status = "disabled"; + }; +};