linux-kernel - Re: [PATCH 14/18] dt-bindings: usb: dwc3: Add Frame Length Adj restrictions

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Date:   Tue, 13 Oct 2020 18:45:58 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Rob Herring <robh@...nel.org>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Manu Gautam <mgautam@...eaurora.org>,
        Roger Quadros <rogerq@...com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 14/18] dt-bindings: usb: dwc3: Add Frame Length Adj
 restrictions

On Tue, Oct 13, 2020 at 07:38:59AM -0500, Rob Herring wrote:
> On Sun, Oct 11, 2020 at 01:41:17AM +0300, Serge Semin wrote:
> > In accordance with the IP core databook the
> > snps,quirk-frame-length-adjustment property can be set within [0, 0x3F].
> > Let's make sure the DT schema applies a correct restriction on the
> > property.
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > ---
> >  Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > index 36d4b8060d7c..f1e6c3dab1ff 100644
> > --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> > @@ -226,6 +226,8 @@ properties:
> >        length adjustment when the fladj_30mhz_sdbnd signal is invalid or
> >        incorrect.
> >      $ref: /schemas/types.yaml#/definitions/uint32
> > +    minimum: 0
> > +    maximum: 0x3f
> 

> It's fine if you add the constraints during the conversion.

Ok. I'll keep it in mind next time.)

-Sergey

> 
> >  
> >    snps,rx-thr-num-pkt-prd:
> >      description: |
> > -- 
> > 2.27.0
> >