On Wed, Sep 4, 2013 at 8:01 AM, Kevin Hilman <[email protected]> wrote: > Hi Dave, > >> Thanks for taking the time to try this out, it does seem there are a few >> kinks with BeagleBone Black but we'll get those worked out. > > I also just noticed that wake from RTC isn't working, but wake from > serial console does. Does RTC wake work for you? (I use rtcwake -m > mem -s4) > > Kevin
On Beaglebone white or black? For PG 1.0 (Beaglebone white) there is the following errata: "RTC: 32.768-kHZ Clock is Gating Off" Details The RTC has a clock gating issue that stops the internal 32.768-kHz clock when the VDD_CORE voltage domain drops below the recommended operating range or the PWRONRSTn input terminal is held low. This issue has the following side effects: - The RTC counters stop incrementing when the 32.768-kHz clock is gated. This causes the RTC to lose time while the clock is gated. - A wakeup event applied to the EXT_WAKEUP input terminal is masked if the EXT_WAKEUP_DB_EN bit in the RTC PMIC register (0x98) is set to 1 which enables the de-bounce function for the EXT_WAKEUP input. This occurs because the 32.768-kHz clock is being used to clock the de-bounce circuit. > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
