Hi, On Wed, Jun 16, 2010 at 08:09, Michael Trimarchi <mich...@panicking.kicks-ass.org> wrote: > Han Wang wrote: >> >> Hi, >> >> I am testing the 2.6.35-rc1 pm branch code on Overo. The system >> boots ok. (I can provide booting log if that is necessary) However, >> when I use "echo mem > /sys/power/state" to send overo to sleep and >> wake it up by enter a key into serial console. I got garbage >> characters in the serial console, and I can not enter anything into >> the console anymore. I wonder if anyone has encountered a similar >> problem, and please give me some suggestion. >> >> I have appended command log below. >> >> r...@overo:~# echo mem > /sys/power/state >> PM: Syncing filesystems ... done. >> PM: Preparing system for mem sleep >> PM: Adding info for No Bus:vcs63 >> PM: Adding info for No Bus:vcsa63 >> Freezing user space processes ... (elapsed 0.02 seconds) done. >> Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. >> PM: Entering mem sleep >> i2c_omap i2c_omap.1: preparing suspend >> i2c_omap i2c_omap.3: preparing suspend >> platform overo_lcd: preparing suspend >> serial8250 serial8250.0: preparing suspend, may wakeup >> serial8250 serial8250.1: preparing suspend, may wakeup >> serial8250 serial8250.2: preparing suspend, may wakeup >> platform omap2-nand: preparing suspend >> platform musb_hdrc: preparing suspend >> platform smsc911x.0: preparing suspend >> platform smsc911x.1: preparing suspend >> platform omap2_mcspi.1: preparing suspend >> platform omap2_mcspi.2: preparing suspend >> platform omap2_mcspi.3: preparing suspend >> platform omap2_mcspi.4: preparing suspend >> arm-pmu arm-pmu.0: preparing suspend >> platform omap_rng: preparing suspend >> platform omapfb: preparing suspend >> twl4030_gpio twl4030_gpio: preparing suspend >> mmci-omap-hs mmci-omap-hs.0: preparing suspend >> mmci-omap-hs mmci-omap-hs.1: preparing suspend >> twl_reg twl_reg.17: preparing suspend >> twl_reg twl_reg.18: preparing suspend >> twl_reg twl_reg.19: preparing suspend >> twl4030_usb twl4030_usb: preparing suspend, may wakeup >> twl_reg twl_reg.6: preparing suspend >> serial8250 serial8250: preparing suspend >> mmcblk mmc0:fb2a: legacy suspend >> serial8250 serial8250: suspend >> i2c i2c-3: suspend >> twl_reg twl_reg.6: suspend >> twl4030_usb twl4030_usb: suspend, may wakeup >> twl_reg twl_reg.19: suspend >> twl_reg twl_reg.18: suspend >> twl_reg twl_reg.17: suspend >> mmci-omap-hs mmci-omap-hs.1: suspend >> mmci-omap-hs mmci-omap-hs.0: suspend >> twl4030_gpio twl4030_gpio: suspend >> dummy 1-004b: suspend >> dummy 1-004a: suspend >> dummy 1-0049: suspend >> twl 1-0048: suspend, may wakeup >> i2c i2c-1: suspend >> platform omapfb: suspend >> platform omap_rng: suspend >> arm-pmu arm-pmu.0: suspend >> platform omap2_mcspi.4: suspend >> platform omap2_mcspi.3: suspend >> platform omap2_mcspi.2: suspend >> platform omap2_mcspi.1: suspend >> platform smsc911x.1: suspend >> platform smsc911x.0: suspend >> platform musb_hdrc: suspend >> platform omap2-nand: suspend >> serial8250 serial8250.2: suspend, may wakeup >> serial8250 serial8250.1: suspend, may wakeup >> serial8250 serial8250.0: suspend, may wakeup >> platform overo_lcd: suspend >> i2c_omap i2c_omap.3: suspend >> i2c_omap i2c_omap.1: suspend >> PM: suspend of devices complete after 201.965 msecs >> serial8250 serial8250: LATE suspend >> i2c i2c-3: LATE suspend >> twl_reg twl_reg.6: LATE suspend >> twl4030_usb twl4030_usb: LATE suspend, may wakeup >> twl_reg twl_reg.19: LATE suspend >> twl_reg twl_reg.18: LATE suspend >> twl_reg twl_reg.17: LATE suspend >> mmci-omap-hs mmci-omap-hs.1: LATE suspend >> mmci-omap-hs mmci-omap-hs.0: LATE suspend >> twl4030_gpio twl4030_gpio: LATE suspend >> dummy 1-004b: LATE suspend >> dummy 1-004a: LATE suspend >> dummy 1-0049: LATE suspend >> twl 1-0048: LATE suspend, may wakeup >> i2c i2c-1: LATE suspend >> platform omapfb: LATE suspend >> platform omap_rng: LATE suspend >> arm-pmu arm-pmu.0: LATE suspend >> platform omap2_mcspi.4: LATE suspend >> platform omap2_mcspi.3: LATE suspend >> platform omap2_mcspi.2: LATE suspend >> platform omap2_mcspi.1: LATE suspend >> platform smsc911x.1: LATE suspend >> platform smsc911x.0: LATE suspend >> platform musb_hdrc: LATE suspend >> platform omap2-nand: LATE suspend >> serial8250 serial8250.2: LATE suspend, may wakeup >> serial8250 serial8250.1: LATE suspend, may wakeup >> serial8250 serial8250.0: LATE suspend, may wakeup >> platform overo_lcd: LATE suspend >> i2c_omap i2c_omap.3: LATE suspend >> i2c_omap i2c_omap.1: LATE suspend >> PM: late suspend of devices complete after 103.088 msecs >> Successfully put all powerdomains to target state >> i2c_omap i2c_omap.1: EARLY resume >> i2c_omap i2c_omap.3: EARLY resume >> platform overo_lcd: EARLY resume >> serial8250 serial8250.0: EARLY resume >> serial8250 serial8250.1: EARLY resume >> serial8250 serial8250.2: EARLY resume >> platform omap2-nand: EARLY resume >> platform musb_hdrc: EARLY resume >> platform smsc911x.0: EARLY resume >> platform smsc911x.1: EARLY resume >> platform omap2_mcspi.1: EARLY resume >> platform omap2_mcspi.2: EARLY resume >> platform omap2_mcspi.3: EARLY resume >> platform omap2_mcspi.4: EARLY resume >> arm-pmu arm-pmu.0: EARLY resume >> platform omap_rng: EARLY resume >> platform omapfb: EARLY resume >> i2c i2c-1: EARLY resume >> twl 1-0048: EARLY resume >> dummy 1-0049: EARLY resume >> dummy 1-004a: EARLY resume >> dummy 1-004b: EARLY resume >> twl4030_gpio twl4030_gpio: EARLY resume >> mmci-omap-hs mmci-omap-hs.0: EARLY resume >> mmci-omap-hs mmci-omap-hs.1: EARLY resume >> twl_reg twl_reg.17: EARLY resume >> twl_reg twl_reg.18: EARLY resume >> twl_reg twl_reg.19: EARLY resume >> twl4030_usb twl4030_usb: EARLY resume >> twl_reg twl_reg.6: EARLY resume >> i2c i2c-3: EARLY resume >> serial8250 serial8250: EARLY resume >> PM: early resume of devices complete after 97.625 msecs >> i2c_omap i2c_omap.1: resume >> i2c_omap i2c_omap.3: resume >> platform overo_lcd: resume >> serial8250 serial8250.0: resume >> serial8250 serial8250.1: resume >> serial8250 serial8250.2: resume >> >> ŨuV=V=ý_―hþžþž.?ýRŪHlŌŌūŧŪ=ū=―īŪŋQ*^žþQū99:ūŌŌýRNũõtŪĻĻ:;;Tŧ?ÉQQ·īÖīË\ŋvéÝĸ >> (garbage string...) > > The problem is releated to no_debug_console option. > > Michael Trimarchi > >> >> Thanks,
Did you look at http://elinux.org/OMAP_Power_Management? There is some info on the current problems with the UART and sleep modes, as well a workaround for UART wake-up. Regards, Jean > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majord...@vger.kernel.org > 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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
