linux-kernel - Re: [PATCH v3 3/9] media: dt-bindings: cadence-csi2rx: Convert to DT schema

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Message-ID: <9c132e62-7830-90bf-2c3e-1568a54eb6ec@starfivetech.com>
Date:   Mon, 3 Apr 2023 17:48:56 +0800
From:   Jack Zhu <jack.zhu@...rfivetech.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "Mauro Carvalho Chehab" <mchehab@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        "Todor Tomov" <todor.too@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Laurent Pinchart" <laurent.pinchart@...asonboard.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Eugen Hristev <eugen.hristev@...labora.com>
CC:     <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <changhuang.liang@...rfivetech.com>
Subject: Re: [PATCH v3 3/9] media: dt-bindings: cadence-csi2rx: Convert to DT
 schema



On 2023/4/1 4:12, Krzysztof Kozlowski wrote:
> On 31/03/2023 14:18, Jack Zhu wrote:
>> Convert DT bindings document for Cadence MIPI-CSI2 RX controller
>> to DT schema format.
>> 
>> Signed-off-by: Jack Zhu <jack.zhu@...rfivetech.com>
>> ---
>>  .../devicetree/bindings/media/cdns,csi2rx.txt | 100 ----------
>>  .../bindings/media/cdns,csi2rx.yaml           | 174 ++++++++++++++++++
>>  MAINTAINERS                                   |   1 +
>>  3 files changed, 175 insertions(+), 100 deletions(-)
>>  delete mode 100644 Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>>  create mode 100644 Documentation/devicetree/bindings/media/cdns,csi2rx.yaml
>> 
>> diff --git a/Documentation/devicetree/bindings/media/cdns,csi2rx.txt b/Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>> deleted file mode 100644
>> index 6b02a0657ad9..000000000000
>> --- a/Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>> +++ /dev/null
>> @@ -1,100 +0,0 @@
>> -Cadence MIPI-CSI2 RX controller
>> -===============================
>> -
>> -The Cadence MIPI-CSI2 RX controller is a CSI-2 bridge supporting up to 4 CSI
>> -lanes in input, and 4 different pixel streams in output.
>> -
>> -Required properties:
>> -  - compatible: must be set to "cdns,csi2rx" and an SoC-specific compatible
> 
> 
> ...
> 
>> +$id: http://devicetree.org/schemas/media/cdns,csi2rx.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Cadence MIPI-CSI2 RX controller
>> +
>> +maintainers:
>> +  - Maxime Ripard <mripard@...nel.org>
>> +
>> +description:
>> +  The Cadence MIPI-CSI2 RX controller is a CSI-2 bridge supporting up to 4 CSI
>> +  lanes in input, and 4 different pixel streams in output.
>> +
>> +properties:
>> +  compatible:
>> +    const: cdns,csi2rx
> 
> That's not equivalent conversion and your commit msg does no mention any
> drops in compatibles.
> 
The equivalent conversion refers to 'an SoC-specific compatible'?
I'm not sure that, is it enough to add a description (drop an 'SoC-specific compatible')
to my next version commit message?

>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    items:
>> +      - description: CSI2Rx system clock
>> +      - description: Gated Register bank clock for APB interface
>> +      - description: pixel Clock for Stream interface 0
>> +      - description: pixel Clock for Stream interface 1
>> +      - description: pixel Clock for Stream interface 2
>> +      - description: pixel Clock for Stream interface 3
>> +
> 
> Best regards,
> Krzysztof
>