| Chunfeng Yun | 78fe97b | 2020-10-14 15:08:26 +0800 | [diff] [blame] | 1 | The device node for Mediatek USB3 DRD controller |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible : should be "mediatek,<soc-model>-mtu3", "mediatek,mtu3", |
| 5 | soc-model is the name of SoC, such as mt8512 etc, |
| 6 | when using "mediatek,mtu3" compatible string, you need SoC specific |
| 7 | ones in addition, one of: |
| 8 | - "mediatek,mt8512-mtu3" |
| 9 | - reg : specifies physical base address and size of the registers |
| 10 | - reg-names: should be |
| 11 | - "ippc" : IP Port Control |
| 12 | - power-domains : a phandle to USB power domain node to control USB's MTCMOS |
| 13 | - clocks : a list of phandle + clock-specifier pairs, one for each |
| 14 | entry in clock-names |
| 15 | - clock-names : must contain "sys_ck" for clock of controller, |
| 16 | the following clocks are optional: |
| 17 | "ref_ck", "mcu_ck", "dma_ck" and "xhci_ck"; |
| 18 | - phys : list of all the USB PHYs on this HCD |
| 19 | - #address-cells, #size-cells : used for sub-nodes with 'reg' property |
| 20 | - ranges : allows valid 1:1 translation between child's address space and |
| 21 | parent's address space |
| 22 | |
| 23 | Optional properties: |
| 24 | - vusb33-supply : regulator of USB AVDD3.3v |
| 25 | - vbus-supply : regulator of VBUS 5v, needed when supports host mode. |
| 26 | |
| 27 | Sub-nodes: |
| 28 | Required properties: |
| 29 | - compatible : should be "mediatek,ssusb" |
| 30 | - reg : specifies physical base address and size of the registers |
| 31 | - reg-names: should be |
| 32 | - "mac" : SSUSB MAC, include xHCI and device |
| 33 | - interrupts : interrupt used by xHCI or device |
| 34 | - dr_mode : should be one of "host" or "peripheral", |
| 35 | see : usb/generic.txt |
| 36 | |
| 37 | Optional properties: |
| 38 | - pinctrl-names : a pinctrl state named "default" is optional |
| 39 | - pinctrl-0 : pin control group |
| 40 | See: pinctrl/pinctrl-bindings.txt |
| 41 | |
| 42 | - device mode: |
| 43 | - maximum-speed : valid arguments are "full-speed", "high-speed", |
| 44 | "super-speed" and "super-speed-plus", |
| 45 | see: usb/generic.txt |
| 46 | - mediatek,force-vbus : force vbus as valid by SW |
| 47 | |
| 48 | - host mode (dr_mode is "host"): |
| 49 | - mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0, |
| 50 | bit1 for u3port1, ... etc; |
| 51 | |
| 52 | Example: |
| 53 | usb3: usb@11213e00 { |
| 54 | compatible = "mediatek,mt8512-mtu3", "mediatek,mtu3"; |
| 55 | reg = <0x11213e00 0x0100>; |
| 56 | reg-names = "ippc"; |
| 57 | phys = <&u2port0 PHY_TYPE_USB2>, <&u2port1 PHY_TYPE_USB2>; |
| 58 | power-domains = <&scpsys MT8512_POWER_DOMAIN_USB>; |
| 59 | clocks = <&infracfg CLK_INFRA_USB_SYS>, |
| 60 | <&topckgen CLK_TOP_SSUSB_TOP_CK_EN>, |
| 61 | <&infracfg CLK_INFRA_ICUSB>; |
| 62 | clock-names = "sys_ck", "ref_ck", "mcu_ck"; |
| 63 | vusb33-supply = <reg_3p3v>; |
| 64 | vbus-supply = <&usb_p0_vbus>; |
| 65 | #address-cells = <1>; |
| 66 | #size-cells = <1>; |
| 67 | ranges; |
| 68 | status = "disabled"; |
| 69 | |
| 70 | ssusb: usb@11210000 { |
| 71 | compatible = "mediatek,ssusb"; |
| 72 | reg = <0x11210000 0x3e00>; |
| 73 | interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_LOW>; |
| 74 | reg-names = "mac"; |
| 75 | dr_mode = "peripheral"; |
| 76 | maximum-speed = "high-speed"; |
| 77 | status = "disabled"; |
| 78 | }; |
| 79 | }; |