On Fri, 2015-07-10 at 11:31 +0300, Roger Quadros wrote:
> Hi,
>
> On 08/07/15 12:41, Chunfeng Yun wrote:
> > add a DT binding documentation of xHCI host controller for the
> > MT8173 SoC from Mediatek.
> >
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
> > ---
> > .../devicetree/bindings/usb/mt8173-xhci.txt | 27 ++++++++++++++++++++++
> > 1 file changed, 27 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/usb/mt8173-xhci.txt
> >
> > diff --git a/Documentation/devicetree/bindings/usb/mt8173-xhci.txt b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt
> > new file mode 100644
> > index 0000000..94cec94
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt
> > @@ -0,0 +1,27 @@
> > +MT65XX xhci
> > +
> > +The device node for Mediatek SOC usb3.0 host controller
> > +
> > +Required properties:
> > + - compatible : supports "mediatek,mt8173-xhci"
> > + - reg : Offset and length of registers
> > + - interrupts : Interrupt mode, number and trigger mode
> > + - reg-vusb33-supply: regulator of usb avdd3.3v
> > + - reg-vbus-supply : regulator of vbus;
>
> General trend is to use <supply-name>-supply.
> We already know it is a regulator so no need to add "reg-"
>
> So those two can be
>
> vusb33-supply:
> vbus-supply:
>
Ok, thanks
>
> > + - usb-phy : the phy that xhci will bind
> > + - usb3-lpm-capable: supports USB3 LPM
> > + - clocks : must support all clocks that xhci needs
> > + - clock-names: should be "sys_mac" for sys and mac clocks
> > +
> > +Example:
> > +usb: usb30@11270000 {
> > + compatible = "mediatek,mt8173-xhci";
> > + reg = <0 0x11270000 0 0x1000>;
> > + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
> > + reg-vusb33-supply = <&mt6397_vusb_reg>;
> > + reg-vbus-supply = <&usb_p1_vbus>;
> > + usb-phy = <&u3phy>;
> > + usb3-lpm-capable;
> > + clocks = <&topckgen CLK_TOP_USB30_SEL>;
> > + clock-names = "sys_mac";
> > +};
> >
>
> cheers,
> -roger
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