linux-kernel - Re: [RESEND PATCH v5 3/7] dt-bindings: remoteproc: Add processor identifier property

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Date: Tue, 4 Jun 2024 09:30:27 +0200
From: Arnaud POULIQUEN <arnaud.pouliquen@...s.st.com>
To: Rob Herring <robh@...nel.org>
CC: Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier
	<mathieu.poirier@...aro.org>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <op-tee@...ts.trustedfirmware.org>, <devicetree@...r.kernel.org>
Subject: Re: [RESEND PATCH v5 3/7] dt-bindings: remoteproc: Add processor
 identifier property

Hello Rob

On 6/3/24 16:35, Rob Herring wrote:
> On Tue, May 21, 2024 at 02:24:54PM +0200, Arnaud Pouliquen wrote:
>> Add the "st,proc-id" property allowing to identify the remote processor.
>> This ID is used to define an unique ID, common between Linux, U-boot and
>> OP-TEE to identify a coprocessor.
>> This ID will be used in request to OP-TEE remoteproc Trusted Application
>> to specify the remote processor.
>>
>> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
>> ---
>>  .../devicetree/bindings/remoteproc/st,stm32-rproc.yaml     | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> index 36ea54016b76..409123cd4667 100644
>> --- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> +++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> @@ -48,6 +48,10 @@ properties:
>>            - description: The offset of the hold boot setting register
>>            - description: The field mask of the hold boot
>>  
>> +  st,proc-id:
>> +    description: remote processor identifier
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +
>>    st,syscfg-tz:
>>      deprecated: true
>>      description:
>> @@ -182,6 +186,8 @@ allOf:
>>          st,syscfg-holdboot: false
>>          reset-names: false
>>          resets: false
>> +      required:
>> +        - st,proc-id
> 
> New required properties are an ABI break. If that is okay, explain why 
> in the commit message.

This commit is the complement the patch 2/7. the require property is associated
to a new compatible. I created this commit as you already reviewed the 2/7

Perhaps It might be clearer if I merge the two.

Thanks,
Arnaud

> 
>>  
>>  additionalProperties: false
>>  
>> @@ -220,6 +226,7 @@ examples:
>>        reg = <0x10000000 0x40000>,
>>              <0x30000000 0x40000>,
>>              <0x38000000 0x10000>;
>> +      st,proc-id = <0>;
>>        st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;
>>        st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;
>>      };
>> -- 
>> 2.25.1
>>