linux-kernel - Re: [PATCH] dt-bindings: display: panel: visionox,vtdr6130: add missing reg property

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Message-ID: <20230207203716.GA4104426-robh@kernel.org>
Date:   Tue, 7 Feb 2023 14:37:16 -0600
From:   Rob Herring <robh@...nel.org>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Neil Armstrong <neil.armstrong@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: display: panel: visionox,vtdr6130: add
 missing reg property

On Tue, Feb 07, 2023 at 07:36:00PM +0100, Sam Ravnborg wrote:
> Hi Neil.
> 
> 
> On Tue, Feb 07, 2023 at 11:04:36AM +0100, Neil Armstrong wrote:
> > Add missing reg property and update example to add dsi top node.
> > 
> > Fixes: ef85db911134 ("dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel")
> > Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> > ---
> >  .../bindings/display/panel/visionox,vtdr6130.yaml  | 34 ++++++++++++++--------
> >  1 file changed, 22 insertions(+), 12 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
> > index 49e2fd4b4e99..84562a5b710a 100644
> > --- a/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
> > +++ b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
> > @@ -16,6 +16,10 @@ properties:
> >    compatible:
> >      const: visionox,vtdr6130
> >  
> > +  reg:
> > +    maxItems: 1
> > +    description: DSI virtual channel
> > +
> Other panels using dsi uses a simple
> "	reg: true"
> 
> I think that would suffice here too.

Yes, because dsi-controller.yaml restricts it to a single entry. 
However, it's description says there can be more than 1 virtual channel 
for a device. In that case, it shouldn't be restricted in 
dsi-controller.yaml and the above with 'maxItems: 1' would be correct. 
So I'd keep this as-is.

Acked-by: Rob Herring <robh@...nel.org>

Rob