linux-kernel - Re: [PATCH v2] clockevents/tcb_clksrc: implement suspend/resume

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Date:   Tue, 13 Jun 2017 14:31:26 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] clockevents/tcb_clksrc: implement suspend/resume

On 13/06/2017 14:28, Alexandre Belloni wrote:
> On 13/06/2017 at 14:21:10 +0200, Daniel Lezcano wrote:
>> On 12/05/2017 20:22, Alexandre Belloni wrote:
>>> On sama5d2, power to the core may be cut while entering suspend mode. It is
>>> necessary to save and restore the TCB registers.
>>>
>>> Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
>>
>> The context will be saved/restored on all the platforms (other than
>> sama5d2) using this timer even if the clock is not powered down. Is that ok?
>>
> 
> Yes, that is fine. There is not much we can do here until we can
> determine what is the target suspend state from the drivers.
> 
>> Should it be tagged for stable@?
>>
> 
> No because support for this suspend mode is not yet upstream.
> 
>> Side note: the config option is in drivers/misc, any particular reason
>> to have it there and not in the clocksource's Kconfig?
>>
> 
> Mostly historical, this is changed in the other series.

Ok, thanks.

I've applied this patch for 4.13.

  -- Daniel


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