linux-kernel - Re: [PATCH v3 05/18] dt-bindings: msm: dsi-controller-main: Document clocks on a per compatible basis

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Date:   Sat, 26 Nov 2022 18:17:33 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Cc:     robdclark@...il.com, quic_abhinavk@...cinc.com,
        dmitry.baryshkov@...aro.org, sean@...rly.run, airlied@...il.com,
        daniel@...ll.ch, robh+dt@...nel.org, dianders@...omium.org,
        david@...t.cz, krzysztof.kozlowski+dt@...aro.org,
        swboyd@...omium.org, konrad.dybcio@...ainline.org,
        agross@...nel.org, andersson@...nel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 05/18] dt-bindings: msm: dsi-controller-main: Document
 clocks on a per compatible basis

On 26/11/2022 14:44, Krzysztof Kozlowski wrote:
> On 24/11/2022 01:47, Bryan O'Donoghue wrote:
>> Each compatible has a different set of clocks which are associated with it.
>> Add in the list of clocks for each compatible.
>>
>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
>> ---
>>   .../display/msm/dsi-controller-main.yaml      | 154 ++++++++++++++++--
>>   1 file changed, 143 insertions(+), 11 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
>> index c4da7179999d2..88aac7d33555c 100644
>> --- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
>> +++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
>> @@ -9,9 +9,6 @@ title: Qualcomm Display DSI controller
>>   maintainers:
>>     - Krishna Manikandan <quic_mkrishn@...cinc.com>
>>   
>> -allOf:
>> -  - $ref: "../dsi-controller.yaml#"
>> -
>>   properties:
>>     compatible:
>>       items:
>> @@ -48,13 +45,8 @@ properties:
>>         - description: Display AXI clock
>>   
>>     clock-names:
>> -    items:
>> -      - const: byte
>> -      - const: byte_intf
>> -      - const: pixel
>> -      - const: core
>> -      - const: iface
>> -      - const: bus
>> +    minItems: 6
>> +    maxItems: 9
>>   
>>     phys:
>>       maxItems: 1
>> @@ -147,6 +139,146 @@ required:
>>     - assigned-clock-parents
>>     - ports
>>   
>> +allOf:
>> +  - $ref: "../dsi-controller.yaml#"
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - qcom,apq8064-dsi-ctrl
>> +    then:
>> +      properties:
>> +        clocks:
>> +          maxItems: 7
>> +        clock-names:
>> +          items:
>> +            - const: iface
>> +            - const: bus
>> +            - const: core_mmss
>> +            - const: src
>> +            - const: byte
>> +            - const: pixel
>> +            - const: core
>> +
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - qcom,msm8916-dsi-ctrl
>> +    then:
>> +      properties:
>> +        clocks:
>> +          maxItems: 6
>> +        clock-names:
>> +          items:
>> +            - const: mdp_core
>> +            - const: iface
>> +            - const: bus
>> +            - const: byte
>> +            - const: pixel
>> +            - const: core
>> +
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - qcom,msm8974-dsi-ctrl
>> +    then:
>> +      properties:
>> +        clocks:
>> +          maxItems: 3
>> +        clock-names:
>> +          items:
>> +            - const: iface
>> +            - const: bus
>> +            - const: vsync
> 
> minItems are 6, so does it actually work?

Hmm.

I ran this using a recent version of dt-schema from github

DT_DOC_CHECKER=~/Development/qualcomm/dt-schema/tools/dt-doc-validate
DT_EXTRACT_EX=~/Development/qualcomm/dt-schema/tools/dt-extract-example
DT_MK_SCHEMA=~/Development/qualcomm/dt-schema/tools/dt-mk-schema
DT_CHECKER=~/Development/qualcomm/dt-schema/tools/dt-validate

make DT_CHECKER_FLAGS=-m dt_binding_check O=$BUILDDIR 
DT_DOC_CHECKER=$DT_DOC_CHECKER DT_EXTRACT_EX=$DT_EXTRACT_EX 
DT_MK_SCHEMA=$DT_MK_SCHEMA DT_CHECKER=$DT_CHECKER 
DT_SCHEMA_FILES=display/msm/dsi-controller-main.yaml -j `nproc`

Neither of these throw an warning in my compile log

arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts:&dsi0
arch/arm/boot/dts/qcom-msm8974pro-samsung-klte.dts:&dsi0

thanks for spotting

>> -           compatible = "qcom,mdss-dsi-ctrl";
>> +           compatible = "qcom,sc7180-dsi-ctrl", "qcom,mdss-dsi-ctrl";
> 

already dropped in v4