Kevin, I'm trying to port over the 2.6.30 OMAP PM branch on Logic's SOM, pulled from just a few days ago before the rebase to 2.6.31-rc1: http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git;a=commit;h=e0cffc298098263630b83c458b8fce754badb9a3 Unfortunately It doesn't go into retention due to MPU_CLK being defined as "virt_pcrm_set" where no virt_pcrm_set exists for OMAP3. Once I changed MPU_CLK to "arm_fck" for OMAP3 as suggested by Rajendra in http://patchwork.kernel.org/patch/18626/ the board goes into retention, but it won't resume on a serial RX event. I wonder if Rajendra's change is correct. 1) Which config did you use on the PM tree in the 2.6.30 timeframe so can start over from a known config/board description (that goes into retention and comes back out) instead of what I rolled from the rx51 for Logic's OMAP35x SOM. Looking in arch/arm/configs, the only omap3 config that has CONFIG_PM=y is for the evm. Is this the one? 2) Is there anything special necessary to have a serial RX event force a wakeup? 3) Do you have a wake-on-timer patch that works in this tree? 4) I've noticed the board hangs after a while of inactivity on the serial power - I've tried cranking up the DEFAULT_TIMEOUT in arch/arm/mach-omap2/serial.c to (50 * HZ), and then disabling the timeout by "echo 0 > /sys/devices/platform/serial/8250.0/sleep_timeout", but the hang still happens after a period of inactivity - characters typed at ttyS0 don't get echoed back. How do I enable wake on serial, or is it on by default? -- Peter Barada <peterb@xxxxxxxxxxx> Logic Product Development, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html