* Andreas Kemnade <andr...@kemnade.info> [180206 18:04]: > On Tue, 6 Feb 2018 09:17:37 -0800 > Tony Lindgren <t...@atomide.com> wrote: > > uarts=$(find /sys/class/tty/tty[SO]*/power/ -type d 2>/dev/null) > > for uart in $uarts; do > > echo enabled > $uart/wakeup 2>&1 > > echo auto > $uart/control 2>&1 > > done > > > > hmm, this looks a bit like runtime suspend.
Not only that, it enables wakeup for UART also for suspend :) That is if your dts has it configured with interrupts-extended for the console UART like omap3-beagle-xm.dts has for example. Seems like the gta04 dts don't have these.. And you also want to have chosen with stdout-path = &uart3 or whatever the debug UART is for earlycon to work. > I mean suspend aka echo mem >/sys/power/state > > > echo -n 1 > /sys/kernel/debug/pm_debug/enable_off_mode And the above will enable SoC and PMIC off modes, which will also take the suspend power to some much much lower value :) You need to configure the PMIC too depending if the oscillator can be turned off, in that case set "ti,twl4030-power-idle-osc-off". That too seems to be missing in gta04 dts files.. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html