linux-kernel - Re: [RFC PATCH 2/6] dt-bindings: net: wireless: ath12k: describe WSI property for QCN9274

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Message-ID: <520c4ac3-a826-4504-9aff-6c2126a85793@kernel.org>
Date: Sat, 26 Oct 2024 20:10:55 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>, ath12k@...ts.infradead.org
Cc: linux-wireless@...r.kernel.org, Kalle Valo <kvalo@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Jeff Johnson <jjohnson@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [RFC PATCH 2/6] dt-bindings: net: wireless: ath12k: describe WSI
 property for QCN9274

On 25/10/2024 12:08, Raj Kumar Bhagat wrote:
>>> Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>
>>> ---
>>>  .../bindings/net/wireless/qcom,ath12k.yaml    | 61 +++++++++++++++++++
>>>  1 file changed, 61 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
>>> index ecf38af747f7..6c8f97865075 100644
>>> --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
>>> +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
>>> @@ -19,6 +19,7 @@ properties:
>>>    compatible:
>>>      enum:
>>>        - pci17cb,1107  # WCN7850
>>> +      - pci17cb,1109  # QCN9274
>>
>> Missing supplies. How does the device take power? Everything through
>> standard PCI pins? Are you sure? Please submit complete binding, so with
>> all required properties.
>>
> 
> QCN9274 gets powered from the standard Pcie (3.3 V) supply. No additional
> regulators are required.

OK, just keep in mind that if you come later with PMU approach to solve
your sequencing problem, we can just NAK it based on above explanation
that PMU approach is not required.

Existing binding lists required supplies on purpose, that's not
coincidence. But of course I don't know if it applies to your case, so
above confirms that it does not apply.

Best regards,
Krzysztof