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dt-bindings: Add a binding for Mediatek xHCI host controller

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add a DT binding documentation of xHCI host controller for the
MT8173 SoC from Mediatek.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2015-11-24 13:09:54 +02:00 committed by Greg Kroah-Hartman
parent 526a240f61
commit c74732e3c5
1 changed files with 51 additions and 0 deletions
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Documentation/devicetree/bindings/usb/mt8173-xhci.txt Normal file
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MT8173 xHCI
The device node for Mediatek SOC USB3.0 host controller
Required properties:
- compatible : should contain "mediatek,mt8173-xhci"
- reg : specifies physical base address and size of the registers,
the first one for MAC, the second for IPPC
- interrupts : interrupt used by the controller
- 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": for clock of xHCI MAC
"wakeup_deb_p0": for USB wakeup debounce clock of port0
"wakeup_deb_p1": for USB wakeup debounce clock of port1
- phys : a list of phandle + phy specifier pairs
Optional properties:
- mediatek,wakeup-src : 1: ip sleep wakeup mode; 2: line state wakeup
mode;
- mediatek,syscon-wakeup : phandle to syscon used to access USB wakeup
control register, it depends on "mediatek,wakeup-src".
- vbus-supply : reference to the VBUS regulator;
- usb3-lpm-capable : supports USB3.0 LPM
Example:
usb30: usb@11270000 {
compatible = "mediatek,mt8173-xhci";
reg = <0 0x11270000 0 0x1000>,
<0 0x11280700 0 0x0100>;
interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
clocks = <&topckgen CLK_TOP_USB30_SEL>,
<&pericfg CLK_PERI_USB0>,
<&pericfg CLK_PERI_USB1>;
clock-names = "sys_ck",
"wakeup_deb_p0",
"wakeup_deb_p1";
phys = <&phy_port0 PHY_TYPE_USB3>,
<&phy_port1 PHY_TYPE_USB2>;
vusb33-supply = <&mt6397_vusb_reg>;
vbus-supply = <&usb_p1_vbus>;
usb3-lpm-capable;
mediatek,syscon-wakeup = <&pericfg>;
mediatek,wakeup-src = <1>;
};