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SubjectRe: [PATCH v4 07/10] dt-bindings: phy: add binding for Allwinner USB3 PHY
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在 2018-10-05五的 15:58 -0500,Rob Herring写道:
> On Thu, Oct 04, 2018 at 08:28:52PM +0800, Icenowy Zheng wrote:
> > The new Allwinner H6 SoC contains a USB3 PHY that is wired to the
> > external USB3 pins of the SoC.
> >
> > Add a device tree binding for the PHY.
> >
> > Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
> > Reviewed-by: Chen-Yu Tsai <wens@csie.org>
> > ---
> > Changes in v4:
> > - Changed Vbus regulator property to vbus-supply.
> >
> > Changes in v3:
> > - Added Chen-Yu's Review tag.
> >
> > No changes in v2, v1.
> >
> > .../bindings/phy/sun50i-usb3-phy.txt | 23
> > +++++++++++++++++++
> > 1 file changed, 23 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/phy/sun50i-
> > usb3-phy.txt
> >
> > diff --git a/Documentation/devicetree/bindings/phy/sun50i-usb3-
> > phy.txt b/Documentation/devicetree/bindings/phy/sun50i-usb3-phy.txt
> > new file mode 100644
> > index 000000000000..9f49c6b8c7e7
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/sun50i-usb3-phy.txt
> > @@ -0,0 +1,23 @@
> > +Allwinner sun50i USB3 PHY
> > +-----------------------
> > +
> > +Required properties:
> > +- compatible : should be one of
> > + * allwinner,sun60i-h6-usb3-phy
> > +- reg : a list of offset + length pairs
> > +- #phy-cells : from the generic phy bindings, must be 0
> > +- clocks : phandle + clock specifier for the phy clock
> > +- resets : phandle + reset specifier for the phy reset
> > +
> > +Optional Properties:
> > +- vbus-supply : a phandle to a regulator that provides power to
> > VBUS.
>
> This belongs in a connector node as it is part of the connector
> unless
> the phy physically needs Vbus for power.
>
> But others have done this, so all the phys can just be wrong...

How should we reference the connector?

Via OF graph or simply a property in PHY node?

>
> > +
> > +Example:
> > + usb3phy: phy@5210000 {
>
> usb-phy@
>
> > + compatible = "allwinner,sun50i-h6-usb3-phy";
> > + reg = <0x5210000 0x10000>;
> > + clocks = <&ccu CLK_USB_PHY1>;
> > + resets = <&ccu RST_USB_PHY1>;
> > + #phy-cells = <0>;
> > + status = "disabled";
>
> Don't show status in examples.
>
> > + };
> > --
> > 2.18.0
> >
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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