linux-kernel - Re: [PATCH v4 1/5] interconnect: qcom: sdm660: Commonize RPM-QoS

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Message-ID: <efafd058-ad68-eb0a-af42-40d879ef63d9@linaro.org>
Date:   Thu, 2 Sep 2021 01:01:59 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Yassine Oudjana <y.oudjana@...tonmail.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Georgi Djakov <djakov@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     AngeloGioacchino Del Regno <kholk11@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shawn Guo <shawn.guo@...aro.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Subject: Re: [PATCH v4 1/5] interconnect: qcom: sdm660: Commonize RPM-QoS

On 01/09/2021 21:48, AngeloGioacchino Del Regno wrote:
> Il 01/09/21 14:15, Yassine Oudjana ha scritto:
>> SoCs such as MSM8996 also control bus QoS in a similar fashion to SDM660,
>> with some paths being controlled by RPM and others directly by the AP.
>> Move relevant functions and defines to a new object so that they can 
>> be used
>> in multiple drivers.
>>
>> Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
> 
> Hey guys!
> 
> I'm waiting for the interconnect RPM-QoS commonization to be merged as I 
> have fresh
> interconnect drivers for MSM8998 and MSM8976, ready to send, that are 
> also using
> the very same QoS mechanism as SDM660.

We were also looking onto this. I'd propose to merge sdm660 code into 
main icc-rpm.c instead of splitting it into separate file. We have 
enabled QoS for apq8096 (msm8916) and msm8939. See 
https://lore.kernel.org/linux-arm-msm/20210818015732.1717810-1-dmitry.baryshkov@linaro.org/ 
for the reference. I'm waiting for Shawn to publish v2 of his fix, then 
I can post v2 of my patchset.

> 
> Yassine, please check Shawn's recent patches for SDM660 interconnect, 
> which are
> fixing some bits for the QoS implementation and adding some required 
> clocks to the
> SDM660 interconnect driver.
> 
> Adding Shawn to the Ccs as to make him aware of this patch;
> also adding Marijn and Konrad from SoMainline as probably interested 
> parties.
> 
> Cheers!
> - Angelo


-- 
With best wishes
Dmitry