linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: sc7280: Add cpucp mbox node

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Message-ID: <83902d2b-089d-4507-8698-f9f48d4aca16@oss.qualcomm.com>
Date: Thu, 17 Oct 2024 23:13:31 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Shivnandan Kumar <quic_kshivnan@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>
Cc: Sibi Sankar <quic_sibis@...cinc.com>,
        Jassi Brar <jassisinghbrar@...il.com>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        cros-qcom-dts-watchers@...omium.org,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Ramakrishna Gottimukkula <quic_rgottimu@...cinc.com>
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sc7280: Add cpucp mbox node

On 17.10.2024 1:51 PM, Shivnandan Kumar wrote:
> 
> 
> On 10/6/2024 8:05 AM, Bjorn Andersson wrote:
>> On Tue, Sep 24, 2024 at 10:39:41AM GMT, Shivnandan Kumar wrote:
>>> Add the CPUCP mailbox node required for communication with CPUCP.
>>
>> I'd like to see a description of why that's useful...
>>
> 
> I will add in next patch set.
> 
>> But perhaps more importantly, why are there no user(s) of this?
>>
> 
> We will later add features such as BUS DCVS (memlat algorithm in CPUCP) and CPUCP logging based on this series.

I think Bjorn's question here is also "what kind of boards is this going
to be useful on", especially given 7280 was more or less released in
basically all firmware flavors that we make..

Konrad