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Message-ID: <5292cc1b-c951-c5c5-b2ef-c154baf6d7fd@linaro.org>
Date: Fri, 18 Nov 2022 14:11:46 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Sowjanya Komatineni <skomatineni@...dia.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Dmitry Osipenko <digetx@...il.com>,
linux-media@...r.kernel.org, linux-tegra@...r.kernel.org,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Richard Leitner <richard.leitner@...data.com>,
Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Subject: Re: [PATCH 01/23] dt-bindings: display: tegra: add bindings for
Tegra20 VIP
On 18/11/2022 10:08, Luca Ceresoli wrote:
> description: parallel video capture interface for the VI
>
>>> + type: object
>>
>> Do you expect it to grow to more channels?
>
> Not on Tegra20, it has one input only, but for other SoCs it's likely.
> Definitely some (including Tegra20 itself) have multiple CSI-2 inputs,
> and it's reasonable that this can apply to parallel input too.
>
> Is this enough motivation to make room for more channels, or should I
> remove it since I have no plans to introduce support for other Tegra
> chips?
The best would be to add some more Tegra SoCs here, so that this @0
makes sense.
But I guess the block can be re-used in future, so it could also stay
like this.
>
>>> +
>>> + properties:
>>> + reg: true
>>
>> const: 0
>>
>>> +
>>> + ports:
>>> + $ref: /schemas/graph.yaml#/properties/ports
>>> +
>>> + properties:
>>> + port@0:
>>> + $ref: /schemas/graph.yaml#/properties/port
>>> + description:
>>> + Port receiving the video stream from the sensor
>>> +
>>> + port@1:
>>> + $ref: /schemas/graph.yaml#/properties/port
>>> + description:
>>> + Port sending the video stream to the VI
>>> +
>>> + required:
>>> + - port@0
>>> + - port@1
>>> +
>>> + additionalProperties: false
>>> +
>>> + required:
>>> + - reg
>>> + - ports
>>> +
>>> +unevaluatedProperties: false
>>> +
>>> +required:
>>> + - compatible
>>> + - "#address-cells"
>>> + - "#size-cells"
>>> + - channel@0
>>> +
>>> +# see nvidia,tegra20-vi.yaml for an example
>>
>> That file does not have this compatible. At least not on next-20221109.
>
> It's added in patch 2. It's a chicken-egg problem, should I add a third
> patch that adds this line only?
>
> ACK for all other comments you wrote.
It's ok.
Best regards,
Krzysztof
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