>-----Original Message----- >From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> >Sent: den 22 april 2024 22:57 >To: Johan Adolfsson <Johan.Adolfsson@xxxxxxxx>; Neil Armstrong <neil.armstrong@xxxxxxxxxx>; Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>; Sam Ravnborg <sam@xxxxxxxxxxxx>; Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>; Maxime Ripard <mripard@xxxxxxxxxx>; Thomas Zimmermann <tzimmermann@xxxxxxx>; David Airlie <airlied@xxxxxxxxx>; Daniel Vetter <daniel@xxxxxxxx>; Rob Herring <robh+dt@xxxxxxxxxx>; Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>; Thierry Reding <thierry.reding@xxxxxxxxx> >Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; kernel <kernel@xxxxxxxx> >Subject: Re: [PATCH 2/2] dt-bindings: panel-simple-dsi: Add generic panel-dsi> > >On 22/04/2024 16:34, Johan Adolfsson wrote: >> >> >> -----Original Message----- >> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> >> Sent: den 19 april 2024 01:05 >> To: Johan Adolfsson <Johan.Adolfsson@xxxxxxxx>; Neil Armstrong .. >> Subject: Re: [PATCH 2/2] dt-bindings: panel-simple-dsi: Add generic >> panel-dsi >> >>> On 18/04/2024 16:01, Johan Adolfsson wrote: >>>> panel-dsi is similar to panel-dpi with overridable timings >>> >>> ??? >> >> I guess a more correct description would be "panel-dsi is a fallback >> in a similar way that panel-dpi is in panel-dpi.yaml .."? > >I meant how does it explain the hardware. In our case it's actually an FPGA that takes MIPI DSI input and can support multiple different kind of displays, and what I want to achieve is to avoid specifying a lot of different panel timings in the driver and have that in devicetree instead. I appreciate any suggestions on how to phrase that in an acceptable manner. >> ... >>>> a/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.y >>>> am >>>> l >>>> +++ b/Documentation/devicetree/bindings/display/panel/panel-simple-d >>>> +++ si >>>> +++ .yaml >>>> @@ -56,6 +56,8 @@ properties: >>>> - samsung,sofef00 >>>> # Shangai Top Display Optoelectronics 7" TL070WSH30 1024x600 TFT LCD panel >>>> - tdo,tl070wsh30 >>>> + # Generic dsi panel with timing overridable >>>> + - panel-dsi >>> >>> ? Devices are not generic. This is very confusing and commit msg does not help me. Compatibles *must* be specific, see writing-bindings. >> >> I guess I see this a generic fallback, that handles any dsi panel as >> long as the correct timing etc is specified in devictree, similar to what panel-dpi is in panel-dpi.yaml Maybe phrasing it similar to panel-dpi.yaml is better? > >But panel-dpi is quite different. You always have two compatibles. I don't see two compatibles here. It doesn't really need two compatibles (in practice at least), the new generic panel-dsi could be enough - I do believe that devices can be generic, but I admit that I'm not really "fluent" in devicetree and binding descriptions. >Best regards, >Krzysztof Best regards /Johan
