linux-kernel - Re: [PATCH 12/14] OMAP: CLK: CLKSRC: Add suspend resume hooks

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Date:   Tue, 22 May 2018 06:39:55 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Keerthy <j-keerthy@...com>
Cc:     linus.walleij@...aro.org, grygorii.strashko@...com,
        t-kristo@...com, Russ.Dill@...com, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org, ssantosh@...nel.org,
        haojian.zhuang@...aro.org, linux-arm-kernel@...ts.infradead.org,
        d-gerlach@...com
Subject: Re: [PATCH 12/14] OMAP: CLK: CLKSRC: Add suspend resume hooks

* Keerthy <j-keerthy@...com> [180522 07:59]:
> On Thursday 12 April 2018 07:57 PM, Tony Lindgren wrote:
> > * Keerthy <j-keerthy@...com> [180412 03:56]:
> >> Add the save and restore for clksrc as part of suspend and resume
> >> so that it saves the counter value and restores. This is needed in
> >> modes like rtc+ddr in self-refresh not doing this stalls the time.
> > 
> > I suspect this too should really happen with cpu_pm.
> 
> I believe going by the previous set of patches this fits better with
> suspend/resume?

Yes if you don't need it for cpuidle and other SoC variants
don't need it for cpuidle.

> > Probably no need to look up the hwmod every time? Especially if am437x
> > will start supporting deeper idle modes during runtime.
> 
> Like clockevent i will store the hwmod pointer for clocksource as well.

OK

Regards,

Tony