On 08/13/2013 07:39 AM, Daniel Mack wrote:
Hi Dave,
On 12.08.2013 20:59, Dave Gerlach wrote:
On 08/11/2013 06:53 AM, Daniel Mack wrote:
The problem I currently face is that I can't make the board resume, as
neither UART0 nor GPIO0 seem to work as wakeup source.
Did you apply the other patches that are mentioned besides Suman's
series? The board will hang while suspending without these.
Yes. However, just to make sure you referenced the correct patches - on
top of yours an Suman's set, I have:
[PATCH 1/2] ARM: OMAP2+: hwmod: rt address space index for DT
[PATCH 2/2] ARM: OMAP2+: hwmod: AM335x: fix cpgmac address space
[PATCH 1/2] ARM: dts: add AM33XX EDMA support
The last one seems somewhat unrelated though.
However, I see an issue with the musb dsps glue. With the usb controller
disabled in DT, I also had to remove the usb_otg_hs entry from
am33xx_mod[] (pm33xx.c). When the usb controller is _enabled_, I get an
instant NULL pointer exception due to a rather obvious bug. I'll send
out a patch right now.
When I send the board to suspend (with USB disabled), the power
consumption drops significantly, and the output is:
# echo mem > /sys/power/state
[ 93.001937] PM: Syncing filesystems ... done.
[ 93.033591] Freezing user space processes ... (elapsed 0.002 seconds)
done.
[ 93.048532] Freezing remaining freezable tasks ... (elapsed 0.002
seconds) done.
[ 93.059277] PM: Sending message for entering DeepSleep mode
[ 93.085368] PM: suspend of devices complete after 15.070 msecs
[ 93.096671] PM: late suspend of devices complete after 5.122 msecs
[ 93.108853] PM: noirq suspend of devices complete after 5.647 msecs
... but traffic on UART0 won't cause a resume.
It looks like you are using no_console_suspend? UART0 does not work as a
wakeup source with this option set.
I'll dig a little deeper now, but if you have any idea, please let me know.
Thanks,
Daniel
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