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dt-bindings: usb: mtk-xhci: Add binding for MediaTek xHCI host controller

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Add dt-binding for MediaTek xHCI host controller

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Chunfeng Yun 2020-05-02 11:35:21 +02:00 committed by Marek Vasut
parent 95d3e1d090
commit 44f5c9ab45
1 changed files with 40 additions and 0 deletions
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doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt Normal file
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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";
};