[PATCH v10 0/4] This suspend patch is only support cut off the power of cpu and some external

Doug Anderson dianders at chromium.org
Mon Dec 1 17:07:39 PST 2014


On Mon, Dec 1, 2014 at 2:08 PM, Doug Anderson <dianders at chromium.org> wrote:
> Hi,
> On Mon, Dec 1, 2014 at 11:51 AM, Kevin Hilman <khilman at kernel.org> wrote:
>> Chris Zhong <zyw at rock-chips.com> writes:
>>> devices, since we still lack power_domain driver, so the other power rail
>>> of rk3288 need keep power on.
>>> I have tested it on rk3288-evb board, atop next-20141112. goto suspend by type
>>> "echo mem > /sys/power/state", vdd_cpu is about 0mv by measuring, so it can be
>>> determined in sleep mode, then press power button to wakeup it.
>> I tested this on top of today's linux-next (next-20141201) and it
>> suspends, but doesn't wake up from any of the button presses.  What
>> wakeup sources are configured for the rk3288-evb-rk808?
> Just to close the loop (I talked with Kevin over IM about this, too):
> I have a huge description of how I tested this as part of my patch at
> <https://patchwork.kernel.org/patch/5414941/>.  Chris:  I think Kevin
> has asked you several times to include information like this in your
> cover letter.  Please, please, please can you try to remember to do
> this?

Talked to Chris offline.  He said that in his tests the other patches
weren't needed, so he didn't list any other patches.  Things just
worked for him.  ...so I guess he did post the instructions that
worked for him.  Sorry for the complaint.  Possibly things are
different on "next-20141112" and that's where Chris said he tested.

I know that I personally needed some of the extra patches.  I guess
the USB one wasn't truly needed (only needed for hotplug), but for me
things were unhappy without SMP.  It was hanging when trying to turn
off secondary CPUs.  I didn't dig, though.  The clocksource patches
are needed for me because I'm using an old bootloader, but I think
they're also relevant for S2R because (I'm told) we can lose the
virtual offset at suspend time in certain modes.



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