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Date:   Fri, 16 Oct 2020 11:15:51 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Dave Gerlach <d-gerlach@...com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        open list <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        Stephan Gerhold <stephan@...hold.net>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Krzysztof Kozlowski <krzk@...nel.org>, sbhanu@...eaurora.org,
        Sibi Sankar <sibis@...eaurora.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Stephen Boyd <sboyd@...nel.org>, nm@...com
Subject: Re: WARNING: at drivers/opp/core.c:678
 dev_pm_opp_set_rate+0x4cc/0x5d4 - on arm x15

+Dave,

On 15-10-20, 15:26, Naresh Kamboju wrote:
> The arm x15 boot failed on Linus 's mainline version 5.9.0.

Don't mention the version as this doesn't give the right information.
You tested it over 5.9 + 5.10-rc1 material.

> I have listed the latest commits on drivers/opp/ .
> 
> metadata:
>   git branch: master
>   git repo: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline
>   git commit: 3e4fb4346c781068610d03c12b16c0cfb0fd24a3
>   git describe: v5.9-4105-g3e4fb4346c78
>   make_kernelversion: 5.9.0
>   kernel-config:
> https://builds.tuxbuild.com/2BB2g61t29VaadVLXEl4cQ/kernel.config
> 
> 
> ------------[ cut here ]------------
> [   13.530971] sdhci-omap 4809c000.mmc: Got CD GPIO
> [   13.535647] WARNING: CPU: 0 PID: 137 at drivers/opp/core.c:678
> dev_pm_opp_set_rate+0x4cc/0x5d4

Looks like the stuff from drivers/opp/ti-opp-supply.c supply didn't
work as expected.

One of the major changes came with these patches:

dc279ac6e5b4 cpufreq: dt: Refactor initialization to handle probe deferral properly
dd461cd9183f opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER

And that's where I think it may have gone wrong.

Dave: Will you (or someone else from TI) can have a look at it as well
?

-- 
viresh

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