linux-kernel - Re: [PATCH v2 5/5] interconnect: qcom: Add MSM8939 interconnect provider driver

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Date:   Tue, 5 Jan 2021 15:54:04 +0200
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     Vincent Knecht <vincent.knecht@...loo.org>,
        Jun Nie <jun.nie@...aro.org>, devicetree@...r.kernel.org,
        bjorn.andersson@...aro.org, agross@...nel.org,
        linux-pm@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, robh@...nel.org
Cc:     shawn.guo@...aro.org
Subject: Re: [PATCH v2 5/5] interconnect: qcom: Add MSM8939 interconnect
 provider driver

On 1/2/21 13:08, Vincent Knecht wrote:
> Le vendredi 04 décembre 2020 à 15:53 +0800, Jun Nie a écrit :
>> Add driver for the Qualcomm interconnect buses found in MSM8939 based
>> platforms. The topology consists of four NoCs that are controlled by
>> a remote processor that collects the aggregated bandwidth for each
>> master-slave pairs.
>>
>> Signed-off-by: Jun Nie <jun.nie@...aro.org>
> 
> Shouldn't some rpm ids be changed like they were for msm8916 in the following patch ?
> c497f9322af9 ("interconnect: qcom: msm8916: Remove rpm-ids from non-RPM nodes")
> https://patchwork.kernel.org/project/linux-arm-msm/patch/20201112105140.10092-1-georgi.djakov@linaro.org/

Maybe they should. I don't have the hardware to try it, but the test will be
to just add the NoC DT nodes, enable the driver and inspect the boot log for
messages like:
[    2.926647] qcom_icc_rpm_smd_send mas X error -6

Thanks,
Georgi