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

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Date:   Tue, 13 Oct 2020 07:38:59 -0500
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Serge Semin <fancer.lancer@...il.com>,
        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 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.

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