linux-kernel - Re: [PATCH] dt-bindings: remoteproc: ti: Fix the number of mailboxes

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Date:   Fri, 7 Jan 2022 08:17:51 -0600
From:   Suman Anna <s-anna@...com>
To:     Rob Herring <robh@...nel.org>, Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
CC:     <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, "Nagalla, Hari" <hnagalla@...com>
Subject: Re: [PATCH] dt-bindings: remoteproc: ti: Fix the number of mailboxes

On 1/7/22 8:13 AM, Suman Anna wrote:
> Hi Rob,
> 
> On 1/6/22 9:04 PM, Rob Herring wrote:
>> Based on the example, the TI K3 DSP and R5 have 2 mailboxes, but the schema
>> says 1. Fix the schema.
> 
> No, 1 is correct. The OMAP Mailbox binding uses #mbox-cells as 1 and not 0, and
> uses a phandle as the cell-value.

The following is what you get with your current patch,

Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.example.dt.yaml:
dsp@...0800000: mboxes: [[4294967295, 4294967295]] is too short
Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.example.dt.yaml:
dsp@...00000: mboxes: [[4294967295, 4294967295]] is too short

regards
Suman

> 
> regards
> Suman
> 
>>
>> Signed-off-by: Rob Herring <robh@...nel.org>
>> ---
>>  .../devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml         | 2 +-
>>  .../devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml         | 2 +-
>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
>> index 5ec6505ac408..648144fa1582 100644
>> --- a/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
>> +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml
>> @@ -53,7 +53,7 @@ properties:
>>        OMAP Mailbox specifier denoting the sub-mailbox, to be used for
>>        communication with the remote processor. This property should match
>>        with the sub-mailbox node used in the firmware image.
>> -    maxItems: 1
>> +    maxItems: 2
>>  
>>    memory-region:
>>      minItems: 2
>> diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
>> index eeef255c4045..2c5f91ea5296 100644
>> --- a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
>> +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
>> @@ -135,7 +135,7 @@ patternProperties:
>>            OMAP Mailbox specifier denoting the sub-mailbox, to be used for
>>            communication with the remote processor. This property should match
>>            with the sub-mailbox node used in the firmware image.
>> -        maxItems: 1
>> +        maxItems: 2
>>  
>>        memory-region:
>>          description: |
>>
>