Re: [PATCH v2 37/52] dt-bindings: usb: dwc3: Fix usb-phy check

Rob Herring
2021-09-03T19:51:46Z

On Wed, Sep 01, 2021 at 03:36:35PM +0300, Felipe Balbi wrote:
>
> Maxime Ripard <maxime@cerno.tech> writes:
>
> > The original binding was allowing any combination of usb2-phy and
> > usb3-phy in the phys and phy-names properties.
> >
> > However, the current binding enforces that those properties must be a
> > list of usb2-phy and usb3-phy, with exactly one element, effectively
> > making usb2-phy the only value being valid.
> >
> > Let's rework the properties description to allow either one or two
> > element picked with values either usb2-phy or usb3-phy. The rest of the
> > tooling makes sure that we don't get any duplicate value, so this should
> > be what we want.
> >
> > Cc: Felipe Balbi <balbi@kernel.org>
> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Cc: linux-usb@vger.kernel.org
> > Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> > ---
> > Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 +++++-----
> > 1 file changed, 5 insertions(+), 5 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > index 078fb7889593..c1c970073681 100644
> > --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > @@ -73,15 +73,15 @@ properties:
> >
> > phys:
> > minItems: 1
> > - items:
> > - - description: USB2/HS PHY
> > - - description: USB3/SS PHY
> > + maxItems: 2
>
> I'm not sure you should enforce a maximum of 2 PHYs. Some systems may
> use more than one USB2 PHY to take care of different parts of the USB
> link.

It was already limited to 2. This change doesn't change that.

Rob