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https://github.com/AsahiLinux/u-boot
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80 lines
2.6 KiB
Text
80 lines
2.6 KiB
Text
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The device node for Mediatek USB3 DRD controller
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Required properties:
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- compatible : should be "mediatek,<soc-model>-mtu3", "mediatek,mtu3",
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soc-model is the name of SoC, such as mt8512 etc,
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when using "mediatek,mtu3" compatible string, you need SoC specific
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ones in addition, one of:
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- "mediatek,mt8512-mtu3"
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- reg : specifies physical base address and size of the registers
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- reg-names: should be
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- "ippc" : IP Port Control
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- power-domains : a phandle to USB power domain node to control USB's MTCMOS
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- clocks : a list of phandle + clock-specifier pairs, one for each
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entry in clock-names
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- clock-names : must contain "sys_ck" for clock of controller,
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the following clocks are optional:
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"ref_ck", "mcu_ck", "dma_ck" and "xhci_ck";
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- phys : list of all the USB PHYs on this HCD
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- #address-cells, #size-cells : used for sub-nodes with 'reg' property
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- ranges : allows valid 1:1 translation between child's address space and
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parent's address space
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Optional properties:
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- vusb33-supply : regulator of USB AVDD3.3v
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- vbus-supply : regulator of VBUS 5v, needed when supports host mode.
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Sub-nodes:
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Required properties:
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- compatible : should be "mediatek,ssusb"
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- reg : specifies physical base address and size of the registers
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- reg-names: should be
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- "mac" : SSUSB MAC, include xHCI and device
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- interrupts : interrupt used by xHCI or device
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- dr_mode : should be one of "host" or "peripheral",
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see : usb/generic.txt
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Optional properties:
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- pinctrl-names : a pinctrl state named "default" is optional
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- pinctrl-0 : pin control group
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See: pinctrl/pinctrl-bindings.txt
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- device mode:
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- maximum-speed : valid arguments are "full-speed", "high-speed",
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"super-speed" and "super-speed-plus",
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see: usb/generic.txt
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- mediatek,force-vbus : force vbus as valid by SW
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- host mode (dr_mode is "host"):
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- mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0,
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bit1 for u3port1, ... etc;
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Example:
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usb3: usb@11213e00 {
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compatible = "mediatek,mt8512-mtu3", "mediatek,mtu3";
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reg = <0x11213e00 0x0100>;
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reg-names = "ippc";
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phys = <&u2port0 PHY_TYPE_USB2>, <&u2port1 PHY_TYPE_USB2>;
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power-domains = <&scpsys MT8512_POWER_DOMAIN_USB>;
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clocks = <&infracfg CLK_INFRA_USB_SYS>,
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<&topckgen CLK_TOP_SSUSB_TOP_CK_EN>,
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<&infracfg CLK_INFRA_ICUSB>;
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clock-names = "sys_ck", "ref_ck", "mcu_ck";
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vusb33-supply = <reg_3p3v>;
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vbus-supply = <&usb_p0_vbus>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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status = "disabled";
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ssusb: usb@11210000 {
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compatible = "mediatek,ssusb";
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reg = <0x11210000 0x3e00>;
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interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_LOW>;
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reg-names = "mac";
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dr_mode = "peripheral";
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maximum-speed = "high-speed";
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status = "disabled";
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};
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};
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