Re: OMAP baseline test results for v3.16-rc4

[Paul Walmsley <paul@pwsan.com>]

On Mon, 14 Jul 2014, Tony Lindgren wrote:

> * Paul Walmsley <paul@pwsan.com> [140714 10:32]:
> > On Mon, 7 Jul 2014, Tony Lindgren wrote:
> > 
> > > With v3.16-rc4 the PM features for omap3 should be working
> > > finally for device tree based booting. At lest beaglexm and
> > > 3xxevm should work.
> > > 
> > > Maybe you are using legacy booting path to idle the UARTs still?
> > > 
> > > FYI, I'm doing this to find the UART entries:
> > > 
> > > uarts=$(find /sys/class/tty/ttyO*/device/power/ -type d)
> > > for uart in $uarts; do
> > >         echo 3000 > $uart/autosuspend_delay_ms
> > > done
> > > 
> > > uarts=$(find /sys/class/tty/ttyO*/power/ -type d)
> > > for uart in $uarts; do
> > >         echo enabled > $uart/wakeup
> > >         echo auto > $uart/control
> > > done
> > > 
> > > echo 1 > /sys/kernel/debug/pm_debug/enable_off_mode
> > 
> > OK thanks, I'll take a close look at it.  It's not using the legacy paths, 
> > but based on a glance at the 37xxevm logs, it looks like the bus address 
> > of the UART isn't right.
> 
> Hmm for which UART? I'm using ttyO2 on my 37xxevm FYI, it can be selected
> on the board based on some switch settings. I may have patched my u-boot
> for that too but don't remember for sure.

Sorry, I should have been more specific.  The path name that the script 
here was using to write to the 'wakeup' file contained the base address.  
It's probably just best to set them via /sys/class/tty as you do.



- Paul