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

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Message-ID: <db0a6797-0e51-45b2-bf8a-58d53d8cf959@quicinc.com>
Date: Fri, 25 Oct 2024 15:38:33 +0530
From: Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, <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 10/23/2024 12:30 PM, Krzysztof Kozlowski wrote:
> On 23/10/2024 08:03, Raj Kumar Bhagat wrote:
>> QCN9274 device has WSI support. WSI stands for WLAN Serial Interface.
>> It is used for the exchange of specific control information across
>> radios based on the doorbell mechanism. This WSI connection is
>> essential to exchange control information among these devices
>>
>> Hence, describe WSI interface supported in QCN9274 with the following
>> properties:
>>
>>  - qcom,wsi-group-id: It represents the identifier assigned to the WSI
>>    connection. All the ath12k devices connected to same WSI connection
>>    have the same wsi-group-id.
>>
>>  - qcom,wsi-index: It represents the identifier assigned to ath12k
>>    device in the order of the WSI connection.
>>
>>  - qcom,wsi-num-devices: Number of devices connected through WSI in
>>    the same group ID.
>>
>> 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.