linux-kernel - Re: [PATCH 0/2] cpufreq/opp: rework regulator initialization

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Message-ID: <20190208103133.ysvaroyniuc3k4i5@vireshk-i7>
Date:   Fri, 8 Feb 2019 16:01:33 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Samsung SoC <linux-samsung-soc@...r.kernel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Dave Gerlach <d-gerlach@...com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: Re: [PATCH 0/2] cpufreq/opp: rework regulator initialization

On 08-02-19, 11:22, Rafael J. Wysocki wrote:
> There are cpufreq driver suspend and resume callbacks, maybe use them?
> 
> The driver could do the I2C transactions in its suspend/resume
> callbacks and do nothing in online/offline if those are part of
> system-wide suspend/resume.

These are per-policy things that we need to do, not sure if driver
suspend/resume is a good place for that. It is more for a case where
CPU 0-3 are in one policy and 4-7 in another. Now 1-7 are
hot-unplugged during system suspend and hotplugged later on. This is
more like complete removal/addition of devices instead of
suspend/resume.

-- 
viresh