linux-kernel - Re: [PATCH v4 5/7] dt-bindings: opp: Add v2-qcom-adreno vendor bindings

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Message-ID: <6ca8eb52-7538-47c0-afb5-e4a91322539b@kernel.org>
Date: Thu, 9 Jan 2025 17:15:08 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
 Konrad Dybcio <konradybcio@...nel.org>,
 Abhinav Kumar <quic_abhinavk@...cinc.com>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Marijn Suijten <marijn.suijten@...ainline.org>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Maya Matuszczyk <maccraft123mc@...il.com>, linux-arm-msm@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH v4 5/7] dt-bindings: opp: Add v2-qcom-adreno vendor
 bindings

On 09/01/2025 14:13, Akhil P Oommen wrote:
> On 1/9/2025 1:36 PM, Krzysztof Kozlowski wrote:
>> On Thu, Jan 09, 2025 at 02:10:01AM +0530, Akhil P Oommen wrote:
>>> Add a new schema which extends opp-v2 to support a new vendor specific
>>> property required for Adreno GPUs found in Qualcomm's SoCs. The new
>>> property called "qcom,opp-acd-level" carries a u32 value recommended
>>> for each opp needs to be shared to GMU during runtime.
>>>
>>> Also, update MAINTAINERS file include the new opp-v2-qcom-adreno.yaml.
>>>
>>> Cc: Rob Clark <robdclark@...il.com>
>>> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
>>> ---
>>>  .../bindings/opp/opp-v2-qcom-adreno.yaml           | 97 ++++++++++++++++++++++
>>>  MAINTAINERS                                        |  1 +
>>>  2 files changed, 98 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/opp/opp-v2-qcom-adreno.yaml b/Documentation/devicetree/bindings/opp/opp-v2-qcom-adreno.yaml
>>> new file mode 100644
>>> index 000000000000..de1f7c6c4f0e
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/opp/opp-v2-qcom-adreno.yaml
>>> @@ -0,0 +1,97 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/opp/opp-v2-qcom-adreno.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Qualcomm Adreno compatible OPP supply
>>> +
>>> +description:
>>> +  Adreno GPUs present in Qualcomm's Snapdragon chipsets uses an OPP specific
>>> +  ACD related information tailored for the specific chipset. This binding
>>> +  provides the information needed to describe such a hardware value.
>>> +
>>> +maintainers:
>>> +  - Rob Clark <robdclark@...il.com>
>>> +
>>
>> You need select: here. See bot's warnings and other schemas, like
>> primecell, how they do it.
> 
> Somehow this error is not reproducible on my setup. I have upgraded both
> Dtschema (2024.11) and and yamllint.


You probably need to test all bindings, so skipping DT_SCHEMA_FILES

> Anyway, could you please confirm if the below addition would be sufficient?
> 
> select:
>   required:
>     - compatible
>   properties:
>     compatible:
>       contains:
>         const: operating-points-v2-adreno


For this binding yes, but if the warning persist, then you might need to
update operating-points-v2 as well, with a similar select but without
"contains:".


Best regards,
Krzysztof