Re: PM: off mode

[Kevin Hilman <khilman@deeprootsystems.com>]

Roger Quadros <ext-roger.quadros@nokia.com> writes:

> ext Roger Quadros wrote:
>> ext Kevin Hilman wrote:
>>> Roger Quadros <ext-roger.quadros@nokia.com> writes:
>>>
>>>> Hi Kevin,
>>>>
>>>>  Off mode does not seem to work on RX51 on latest PM branch. I get a
>>>> reboot if I set enable_off_mode and sleep_while_idle and I wait for
>>>> timeout.
>>>>
>>>>  Does it work on other platforms?
>>>>
>>>
>>> Yes, I tested on SDP, omap3evm, Beagle, Overo and RX51.
>>>
>>> On RX51, I'm using omap3_pm_defconfig with the debug UART changed to
>>> UART3 and things work fine here.
>>>
>>> I using rootfs from latest fiasco image, and it drops me into an early
>>> shell because /sbin/preinit fails in various ways. Note that I'm using
>>> an S2.0 GP board.  Note also that I modified /sbin/preinit to launch
>>> another getty on ttyS2 so I get a shell since newer kernels ignore the
>>> ATAGs passed by nolo.
>>>
>>> Below is a console log of my boot so you can see what is going on.
>>> Because /sbin/preinit enables off-mode and sleep_while_idle, I just
>>> let it boot and it seems to work.
>>>
>>> Kevin
>>>
>>
>> I am having S2.1 board and it does not work on that. It gets locked
>> up and restarts after idle timeout.
>> But I checked that it works on S2.0 board.
>>
>> Any clue what could be the problem?
>>
>> -roger
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>
> Kevin,
>
> I have some new observations.
>
> It works only if we load the kernel via USB. Instead, if we flash the
> kernel, it will not work even with S2.0 board. It boots to shell but
> after sleep timeout (5 seconds) console gets locked up and it reboots
> after a while.

Roger,

Does this happen even with the working defconfig you sent the other day?

Kevin