[PATCH v8 19/20] OMAP2+: UART: Do not gate uart clocks if used for debug_prints

Bedia, Vaibhav vaibhav.bedia at ti.com
Tue Jan 3 06:52:01 EST 2012


On Tue, Jan 03, 2012 at 16:01:52, Govindraj wrote:
> >
> > I have basic suspend-resume working on it. Strangely this works irrespective
> > of the value of tty_dev wakeup entry. Do you know if this is expected on OMAP?
> >
> 
> AFAIK yes.

Ok.

> 
> > The other issue concerning runtime PM is that as soon as I set a non-zero to
> > the autosuspend_delay_ms I get some garbage characters and eventually the
> > console stops responding.
> >
> > [root at arago /]# cat .../omap_uart.0/power/autosuspend_delay_ms
> > -1
> > [root at arago /]# echo 3000 > ÖKWëé«+×é«+wU.Éѹ,z,½Ý.ɽosuspend_delayÕ£½ÍÕÍ...
> > [root at arago /]# <- No response after some time
> >
> 
> try enabling CONFIG_CPU_IDLE for pm qos_usage from uart driver.
> 

Its enabled.

Regards,
Vaibhav




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