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Message-ID: <fcb52c13-86c6-571e-6217-5c22e9596f6b@starfivetech.com>
Date:   Tue, 4 Apr 2023 10:44:07 +0800
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Subject: Re: [PATCH v3 1/9] media: dt-bindings: Add bindings for JH7110 Camera
 Subsystem
Content-Language: en-US
To:     Rob Herring <robh@kernel.org>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        "Mauro Carvalho Chehab" <mchehab@kernel.org>,
        Maxime Ripard <mripard@kernel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
        Robert Foss <rfoss@kernel.org>,
        Todor Tomov <todor.too@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Eugen Hristev <eugen.hristev@collabora.com>,
        <linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <changhuang.liang@starfivetech.com>
References: <20230331121826.96973-1-jack.zhu@starfivetech.com>
 <20230331121826.96973-2-jack.zhu@starfivetech.com>
 <91874e63-553f-ced5-ce32-309ac2ebf6e5@linaro.org>
 <b8d25a66-6464-78fe-b39b-ebb8a7f1a99c@starfivetech.com>
 <20230403214837.GA1925690-robh@kernel.org>
From:   Jack Zhu <jack.zhu@starfivetech.com>
In-Reply-To: <20230403214837.GA1925690-robh@kernel.org>
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On 2023/4/4 5:48, Rob Herring wrote:
> On Mon, Apr 03, 2023 at 05:14:25PM +0800, Jack Zhu wrote:
>> 
>> 
>> On 2023/4/1 4:09, Krzysztof Kozlowski wrote:
>> > On 31/03/2023 14:18, Jack Zhu wrote:
>> >> Add the bindings documentation for Starfive JH7110 Camera Subsystem
>> >> which is used for handing image sensor data.
>> >> 
>> >> Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com>
>> >> ---
>> >>  .../bindings/media/starfive,jh7110-camss.yaml | 159 ++++++++++++++++++
>> >>  MAINTAINERS                                   |   7 +
>> >>  2 files changed, 166 insertions(+)
>> >>  create mode 100644 Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml
>> >> 
>> >> diff --git a/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml b/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml
>> >> new file mode 100644
>> >> index 000000000000..0235c70e7793
>> >> --- /dev/null
>> >> +++ b/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml
>> >> @@ -0,0 +1,159 @@
>> >> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> >> +
>> >> +%YAML 1.2
>> >> +---
>> >> +$id: http://devicetree.org/schemas/media/starfive,jh7110-camss.yaml#
>> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> >> +
>> >> +title: Starfive SoC CAMSS ISP
>> >> +
>> >> +maintainers:
>> >> +  - Jack Zhu <jack.zhu@starfivetech.com>
>> >> +  - Changhuang Liang <changhuang.liang@starfivetech.com>
>> >> +
>> >> +description:
>> >> +  The Starfive CAMSS ISP is a Camera interface for Starfive JH7110 SoC. It
>> >> +  consists of a VIN controller (Video In Controller, a top-level control until)
>> >> +  and an ISP.
>> >> +
>> >> +properties:
>> >> +  compatible:
>> >> +    const: starfive,jh7110-camss
>> >> +
>> >> +  reg:
>> >> +    maxItems: 2
>> >> +
>> >> +  reg-names:
>> >> +    items:
>> >> +      - const: syscon
>> >> +      - const: isp
>> >> +
>> >> +  clocks:
>> >> +    maxItems: 7
>> >> +
>> >> +  clock-names:
>> >> +    items:
>> >> +      - const: apb_func
>> >> +      - const: wrapper_clk_c
>> >> +      - const: dvp_inv
>> >> +      - const: axiwr
>> >> +      - const: mipi_rx0_pxl
>> >> +      - const: ispcore_2x
>> >> +      - const: isp_axi
>> >> +
>> >> +  resets:
>> >> +    maxItems: 6
>> >> +
>> >> +  reset-names:
>> >> +    items:
>> >> +      - const: wrapper_p
>> >> +      - const: wrapper_c
>> >> +      - const: axird
>> >> +      - const: axiwr
>> >> +      - const: isp_top_n
>> >> +      - const: isp_top_axi
>> >> +
>> >> +  power-domains:
>> >> +    items:
>> >> +      - description: JH7110 ISP Power Domain Switch Controller.
>> >> +
>> >> +  interrupts:
>> >> +    maxItems: 4
>> >> +
>> >> +  ports:
>> >> +    $ref: /schemas/graph.yaml#/properties/ports
>> >> +
>> >> +    properties:
>> >> +      port@0:
>> >> +        $ref: /schemas/graph.yaml#/properties/port
>> >> +        unevaluatedProperties: false
>> >> +        description:
>> >> +          Input port for receiving DVP data.
>> >> +
>> >> +        properties:
>> >> +          endpoint:
>> >> +            $ref: video-interfaces.yaml#
>> > 
>> > I don't think we use video-interfaces with port. Are you sure this works
>> > fine? Please extend the example with appropriate properties to check...
>> > 
>> Thank you for your review.
>> the following change, is it OK?
> 
> What Krzysztof meant is port@0 needs to $ref '$defs/port-base' rather 
> then 'properties/port' to work with video-interfaces.yaml. If you made 
> that change, then this is fine.
> 
Thank you for your comment.
OK, I have made that change. Thank you.

      port@0:
        $ref: /schemas/graph.yaml#/$defs/port-base
        unevaluatedProperties: false
        description: Input port for receiving DVP data.

        properties:
          endpoint:
            $ref: video-interfaces.yaml#
            unevaluatedProperties: false
            
            properties:
              bus-width:
                const: 8

              data-shift:
                const: 2

>> 
>> endpoint:
>>             $ref: video-interfaces.yaml#
>>             unevaluatedProperties: false
>>             
>>             properties:
>>               bus-width:
>>                 const: 8
>> 
>>               data-shift:
>>                 const: 2
>> 
>> in example:
>> 	port@0 {
>>                 reg = <0>;
>>                 vin_from_sc2235: endpoint {
>>                     remote-endpoint = <&sc2235_to_vin>;
>>                     bus-width = <8>;
>>                     data-shift = <2>;
>>                     hsync-active = <1>;
>>                     vsync-active = <0>;
>>                     pclk-sample = <1>;
>>                 };
>> 	};
>> 
>> 
>> >> +            unevaluatedProperties: false
>> >> +
>> >> +      port@1:
>> >> +        $ref: /schemas/graph.yaml#/properties/port
>> >> +        unevaluatedProperties: false
>> >> +        description:
>> >> +          Input port for receiving CSI data.
>> >> +
>> >> +        properties:
>> >> +          endpoint:
>> >> +            $ref: video-interfaces.yaml#
>> >> +            unevaluatedProperties: false
>> > 
>> > Same concerns here.
>> > 
>> for port@1, We don't use any properties as the allwinner,sun6i-a31-isp.yaml file.
>> Use the following modification, I don't know if it is ok?
> 
> Yes.
>  
>> port@1:
>>         $ref: /schemas/graph.yaml#/properties/port
>>         description: Input port for receiving CSI data.
> 
> Rob