ARM: OMAP2+: PM: code consolidation for 3.4
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Cover letter [PATCH 0/2] ARM: OMAP2+: PM: code consolidation for 3.4
Hi Luca,
"Coelho, Luciano" <[email protected]> writes:
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I can't get ttyO2 wakeup to work on my Blaze with 3.3-rc5. It works fine with 3.2.
I assume you mean wakeup from system-wide suspend (echo mem > /sys/power/state)?
Are you enabling UART wakeups?
They are disabled by default, so you need to:
echo enabled > /sys/devices/platform/omap/omap_uart.2/tty/ttyO2/power/wakeup
It may work in v3.2 due to the fact that the UART runtime PM had the unintended side-effect of essentially disabling MPU and CORE PM. With that bug fixed and MPU & CORE actually hitting low power states, you'll need to ensure UART wakeups are enabled.
If you're already enabling wakeups and this still isn't working, try adding 'no_console_suspend' to the kernel cmdline, try a suspend/resume and post the console output.
Thanks,
Kevin