Re: v3.5-rc4 doesn't wake from dynamic idle on 3530ES3 Beagle

[Shubhrajyoti <shubhrajyoti@ti.com>]

On Thursday 28 June 2012 11:45 AM, Shilimkar, Santosh wrote:
> + Shubro, Felipe,
>
> On Thu, Jun 28, 2012 at 12:57 AM, Paul Walmsley <paul@pwsan.com> wrote:
>> On Wed, 27 Jun 2012, Paul Walmsley wrote:
>>
>>> Looks like something broke between v3.5-rc3 and v3.5-rc4 with dynamic
>>> idle on 3530ES3 Beagle.  37xx EVM doesn't seem to be affected.
>>>
>>> Taking a closer look now.
>> Reverting commit 91930652a23de0873a157aa1d9962cb878d64451 ("OMAP2+: UART:
>> Add mechanism to probe uart pins and configure rx wakeup") makes wakeup
>> from dynamic retention idle work again.
>>
> I suspected this.
> This could be because, all the board are now expected to setup the pin
> configurations.
I do not have access to a 3530 Beagle

Just tried on 3630 beagle that seems to be fine.
let me see if I can reproduce in other onap3 boards that I have.

Hi Paul,

On my beaglexm 3630

This is with the following steps:
1. merge your 32k timer fix branch
2. disable USB host: set CONFIG_MFD_OMAP_USB_HOST=n

Let me know if I missed anything.

# echo 3000 > /sys/devices/platform/omap_uart.0/power/autosuspend_delay_ms
# echo 3000 > /sys/devices/platform/omap_uart.1/power/autosuspend_delay_ms
# echo 3000 > /sys/devices/platform/omap_uart.2/power/autosuspend_delay_ms
#
# mount -t debugfs debugfs /debug/
# cat /debug/pm_debug/count | grep per_pwrdm
per_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0
per_clkdm->per_pwrdm (17)
# echo 1 > /debug/pm_debug/enable_off_mode
# echo enabled > /sys/devices/platform/omap_uart.2/tty/ttyO2/power/wakeup
# echo mem > /sys/power/state
[   12.404083] PM: Syncing filesystems ... done.
[   12.426055] Freezing user space processes ... (elapsed 0.01 seconds)
done.
[   12.452728] Freezing remaining freezable tasks ... (elapsed 0.02
seconds) done.
[   12.483795] Suspending console(s) (use no_console_suspend to debug)
[   12.609039] PM: suspend of devices complete after 115.564 msecs
[   12.611511] PM: late suspend of devices complete after 2.471 msecs
[   12.615966] PM: noirq suspend of devices complete after 4.424 msecs
[   12.616027] Disabling non-boot CPUs ...
[   13.203704] Successfully put all powerdomains to target state
[   13.206115] PM: noirq resume of devices complete after 2.135 msecs
[   13.209228] PM: early resume of devices complete after 1.708 msecs
[   13.585815] PM: resume of devices complete after 376.464 msecs
[   13.637603] Restarting tasks ... done.
#
# cat /debug/pm_debug/count | grep per_pwrdm
per_pwrdm (ON),OFF:1,RET:0,INA:0,ON:2,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0
per_clkdm->per_pwrdm (17)
#





>
> Regards
> Santosh