linux-kernel - Re: [PATCH v5 2/3] arm64: dts: qcom: qcs615: Add clock nodes for multimedia clock

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Message-ID: <d11496a2-5a43-4b6b-9a8a-d8e05a89587a@oss.qualcomm.com>
Date: Wed, 30 Jul 2025 21:40:08 +0530
From: Akhil P Oommen <akhilpo@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Taniya Das <quic_tdas@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Manivannan Sadhasivam <mani@...nel.org>
Cc: Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik <quic_imrashai@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v5 2/3] arm64: dts: qcom: qcs615: Add clock nodes for
 multimedia clock

On 7/30/2025 7:07 PM, Konrad Dybcio wrote:
> On 7/2/25 11:13 AM, Taniya Das wrote:
>> Add support for video, camera, display and gpu clock controller nodes
>> for QCS615 platform.
>>
>> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
>> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
>> ---
> 
> Bjorn mentioned offline that these controllers should
> probably have power-domains attached to them (perhaps bar
> GPU_CC, that's under discussion..)

QCS615 has an rgmu which doesn't manage gpucc. So this is a different
case from the other discussion. Are we talking about scaling mx and cx
rail while setting clk rate? Downstream clk driver does that on behalf
of the clients. I suppose you are not talking about that here.

-Akhil.

> 
> Konrad
>