怘€æ€˜€`3f<€fÀæøÀ̆ž?`??f?æžf<øž`??ð3ž<3ž<` at 0 [ 0.613159] edma-dma-engine edma-dma-engine.0: Can't allocate PaRAM dummy slot [ 0.613220] edma-dma-engine: probe of edma-dma-engine.0 failed with error -5 [ 0.725219] omap-dma-engine 48056000.dma-controller: OMAP DMA engine driver [ 0.727691] of_get_named_gpiod_flags exited with status -517 [ 0.727752] platform hsusb2_power_reg.7: Driver reg-fixed-voltage requests probe deferral [ 0.740509] SCSI subsystem initialized [ 0.744049] usbcore: registered new interface driver usbfs [ 0.744720] usbcore: registered new interface driver hub [ 0.745758] usbcore: registered new device driver usb [ 0.746459] of_get_named_gpiod_flags exited with status 0 [ 0.747314] platform hsusb2_phy.8: Driver usb_phy_gen_xceiv requests probe deferral [ 0.756347] omap_i2c 48070000.i2c: bus 0 rev4.4 at 2600 kHz [ 0.758758] omap_i2c 48072000.i2c: bus 1 rev4.4 at 400 kHz [ 0.762084] omap_i2c 48060000.i2c: bus 2 rev4.4 at 100 kHz [ 0.773712] Switched to clocksource 32k_counter [ 1.017669] NET: Registered protocol family 2 [ 1.020080] TCP established hash table entries: 4096 (order: 2, 16384 bytes) [ 1.020385] TCP bind hash table entries: 4096 (order: 5, 147456 bytes) [ 1.022674] TCP: Hash tables configured (established 4096 bind 4096) [ 1.022857] TCP: reno registered [ 1.022888] UDP hash table entries: 256 (order: 2, 20480 bytes) [ 1.023223] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes) [ 1.025329] NET: Registered protocol family 1 [ 1.029693] RPC: Registered named UNIX socket transport module. [ 1.029724] RPC: Registered udp transport module. [ 1.029754] RPC: Registered tcp transport module. [ 1.029754] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 1.031463] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available [ 1.045562] futex hash table entries: 256 (order: 2, 16384 bytes) [ 1.264648] VFS: Disk quotas dquot_6.5.2 [ 1.264953] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 1.267852] NFS: Registering the id_resolver key type [ 1.268371] Key type id_resolver registered [ 1.268402] Key type id_legacy registered [ 1.268585] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 1.269165] msgmni has been set to 984 [ 1.274169] io scheduler noop registered [ 1.274200] io scheduler deadline registered [ 1.274291] io scheduler cfq registered (default) [ 1.279754] pinctrl-single 48002030.pinmux: 284 pins at pa fa002030 size 568 [ 1.280548] pinctrl-single 48002a00.pinmux: 46 pins at pa fa002a00 size 92 [ 1.281951] pinctrl-single 480025a0.pinmux: 46 pins at pa fa0025a0 size 92 [ 1.288452] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 1.300323] omap_uart 4806a000.serial: no wakeirq for uart0 [ 1.300384] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/serial@4806a000[0]' [ 1.301879] 4806a000.serial: ttyO0 at MMIO 0x4806a000 (irq = 88, base_baud = 3000000) is a OMAP UART0 [ 1.305450] omap_uart 4806c000.serial: no wakeirq for uart0 [ 1.305511] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/serial@4806c000[0]' [ 1.306213] 4806c000.serial: ttyO1 at MMIO 0x4806c000 (irq = 89, base_baud = 3000000) is a OMAP UART1 [ 1.308746] omap_uart 49020000.serial: no wakeirq for uart0 [ 1.308776] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/serial@49020000[0]' [ 1.309509] 49020000.serial: ttyO2 at MMIO 0x49020000 (irq = 90, base_baud = 3000000) is a OMAP UART2 [ 1.769622] console [ttyO2] enabled [ 1.774414] omap_uart 49042000.serial: no wakeirq for uart0 [ 1.777496] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/serial@49042000[0]' [ 1.783111] 49042000.serial: ttyO3 at MMIO 0x49042000 (irq = 96, base_baud = 3000000) is a OMAP UART3 [ 1.838226] brd: module loaded [ 1.867889] loop: module loaded [ 1.884796] twl 0-0048: PIH (irq 23) chaining IRQs 306..314 [ 1.888427] twl 0-0048: power (irq 311) chaining IRQs 314..321 [ 1.904296] VAUX1: at 3000 mV [ 1.911193] usb_1v8: 1800 mV [ 1.916992] VAUX3: at 2800 mV [ 1.922241] VAUX4: at 2800 mV [ 1.928039] VDD1: 600 <--> 1450 mV at 1200 mV [ 1.934570] VDAC: 1800 mV [ 1.941467] VIO: at 1800 mV [ 1.947570] VINTANA1: 1500 mV [ 1.953369] VINTANA2: at 2750 mV [ 1.959747] VINTDIG: 1500 mV [ 1.964996] VMMC1: 1850 <--> 3150 mV at 3000 mV [ 1.971130] VMMC2: 1850 <--> 3150 mV at 2600 mV [ 1.977203] VUSB1V5: 1500 mV [ 1.981811] VUSB1V8: 1800 mV [ 1.986755] VUSB3V1: 3100 mV [ 1.992492] VPLL1: at 1800 mV [ 1.998291] VPLL2: 1800 mV [ 2.003387] VSIM: 1800 <--> 3000 mV at 1800 mV [ 2.009948] twl4030_gpio twl4030-gpio: gpio (irq 306) chaining IRQs 322..339 [ 2.014862] gpiochip_find_base: found new base at 492 [ 2.019287] gpiochip_add: registered GPIOs 492 to 511 on device: twl4030 [ 2.039001] mtdoops: mtd device (mtddev=name/number) must be supplied [ 2.066284] usbcore: registered new interface driver asix [ 2.069885] usbcore: registered new interface driver ax88179_178a [ 2.074615] usbcore: registered new interface driver cdc_ether [ 2.078613] usbcore: registered new interface driver smsc95xx [ 2.082366] usbcore: registered new interface driver net1080 [ 2.086578] usbcore: registered new interface driver cdc_subset [ 2.090423] usbcore: registered new interface driver zaurus [ 2.094573] usbcore: registered new interface driver cdc_ncm [ 2.100616] usbcore: registered new interface driver cdc_wdm [ 2.104858] usbcore: registered new interface driver usb-storage [ 2.108856] usbcore: registered new interface driver usbtest [ 2.118804] mousedev: PS/2 mouse device common for all mice [ 2.130218] input: twl4030_pwrbutton as /devices/68000000.ocp/48070000.i2c/i2c-0/0-0048/pwrbutton.34/input/input0 [ 2.142547] twl_rtc rtc.10: Power up reset detected. [ 2.145874] twl_rtc rtc.10: Enabling TWL-RTC [ 2.154235] twl_rtc rtc.10: rtc core: registered rtc.10 as rtc0 [ 2.159454] i2c /dev entries driver [ 2.167694] Driver for 1-wire Dallas network protocol. [ 2.178375] omap_wdt: OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec [ 2.189086] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/mmc@4809c000[0]' [ 2.194091] of_get_named_gpiod_flags: can't parse gpios property of node '/ocp/mmc@4809c000[0]' [ 2.205017] omap_hsmmc 4809c000.mmc: pins are not configured from the driver [ 2.252044] usbcore: registered new interface driver usbhid [ 2.255279] usbhid: USB HID core driver [ 2.261749] oprofile: using arm/armv7 [ 2.264862] TCP: cubic registered [ 2.266693] Initializing XFRM netlink socket [ 2.269165] NET: Registered protocol family 17 [ 2.271728] NET: Registered protocol family 15 [ 2.274719] Key type dns_resolver registered [ 2.284179] ThumbEE CPU extension supported. [ 2.293212] VPLL2: disabling [ 2.295989] VUSB3V1: disabling [ 2.298553] VUSB1V8: disabling [ 2.301086] VUSB1V5: disabling [ 2.304229] VDAC: disabling [ 2.306884] VAUX3: disabling [ 2.309509] regulator-dummy: disabling [ 2.316619] gpiochip_add: registered GPIOs 160 to 191 on device: gpio [ 2.323516] of_get_named_gpiod_flags exited with status 0 [ 2.330535] hsusb2_vbus: 3300 mV [ 2.333282] of_get_named_gpiod_flags exited with status 0 [ 2.342407] of_get_named_gpiod_flags exited with status 0 [ 2.347503] mmc0: host does not support reading read-only switch. assuming write-enable. [ 2.352813] input: gpio_keys.6 as /devices/gpio_keys.6/input/input1 [ 2.357727] mmc0: new high speed SDHC card at address 1234 [ 2.367187] mmcblk0: mmc0:1234 SA04G 3.68 GiB [ 2.377166] twl_rtc rtc.10: setting system clock to 2000-01-01 00:00:00 UTC (946684800) [ 2.463531] mmcblk0: p1 p2 [ 4.894500] kjournald starting. Commit interval 5 seconds [ 4.898010] EXT3-fs (mmcblk0p2): warning: maximal mount count reached, running e2fsck is recommended [ 5.299530] EXT3-fs (mmcblk0p2): using internal journal [ 5.311401] EXT3-fs (mmcblk0p2): recovery complete [ 5.314178] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode [ 5.318115] VFS: Mounted root (ext3 filesystem) on device 179:2. [ 5.328857] devtmpfs: mounted [ 5.331420] Freeing unused kernel memory: 384K (c078c000 - c07ec000) INIT: version 2.86 booting Starting the hotplug events dispatcher udevd Synthesizing the initial hotplug events [ 6.494537] udevd (834): /proc/834/oom_adj is deprecated, please use /proc/834/oom_score_adj instead. [ 15.149261] random: nonblocking pool is initialized [ 15.290100] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck. Remounting root file system... mount: according to mtab, /proc is already mounted on /proc WARNING: Couldn't open directory /lib/modules/3.14.0-rc7-51200-gdcb99fd: No such file or directory FATAL: Could not open /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep.temp for writing: No such file or directory root: mount: mount point /proc/bus/usb does not exist Setting up IP spoofing protection: rp_filter. Configuring network interfaces... modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory ifconfig: SIOCGIFFLAGS: No such device modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory eth0 No such device modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory udhcpc: SIOCGIFINDEX: No such device done. Starting portmap daemon: portmap. Tue Jul 22 00:18:00 UTC 2008 INIT: Entering runlevel: 5 ALSA: Restoring mixer settings... /usr/sbin/alsactl: load_state:1327: No soundcards found... Starting Dropbear SSH server: modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory dropbear. Starting advanced power management daemon: No APM support in kernel (failed.) Starting system message bus: dbus. Starting syslogd/klogd: start-stop-daemon: lseek: Invalid argument * Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [ ok ] Starting Bluetooth subsystem: hcidmodprobe: FATAL: Could not load /lib/modules/3.14.0-rc7-51200-gdcb99fd/modules.dep: No such file or directory hid2hci. .-------. | | .-. | | |-----.-----.-----.| | .----..-----.-----. | | | __ | ---'| '--.| .-'| | | | | | | | |--- || --'| | | ' | | | | '---'---'--'--'--. |-----''----''--' '-----'-'-'-' -' | '---' The Angstrom Distribution beagleboard ttyO2 Angstrom 2008.1-test-20080712 beagleboard ttyO2 beagleboard login: .-------. | | .-. | | |-----.-----.-----.| | .----..-----.-----. | | | __ | ---'| '--.| .-'| | | | | | | | |--- || --'| | | ' | | | | '---'---'--'--'--. |-----''----''--' '-----'-'-'-' -' | '---' The Angstrom Distribution beagleboard ttyO2 Angstrom 2008.1-test-20080712 beagleboard ttyO2 beagleboard login: .-------. | | .-. | | |-----.-----.-----.| | .----..-----.-----. | | | __ | ---'| '--.| .-'| | | | | | | | |--- || --'| | | ' | | | | '---'---'--'--'--. |-----''----''--' '-----'-'-'-' -' | '---' The Angstrom Distribution beagleboard ttyO2 Angstrom 2008.1-test-20080712 beagleboard ttyO2 beagleboard login: root login[2136]: root login on `ttyO2' root@beagleboard:~# root@beagleboard:~# %% Start PM consolidated quick test %% Preparation root@beagleboard:~# root@beagleboard:~# mount -t sysfs none /sys mount: none already mounted or /sys busy mount: according to mtab, sysfs is already mounted on /sys root@beagleboard:~# root@beagleboard:~# mount -t debugfs none /debug root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.seria l | paste -s -d' '`; do echo -1 > $u/power/autosuspend_delay_ms; done root@beagleboard:~# root@beagleboard:~# echo 0 > /debug/pm_debug/enable_off_mode root@beagleboard:~# root@beagleboard:~# %% Baseline pm_debug count dump cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:1310,INA:0,ON:1311,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 core_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 per_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (ON),OFF:0,RET:1310,INA:0,ON:1311,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 neon_pwrdm (ON),OFF:0,RET:1310,INA:0,ON:1311,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:1310,INA:0,ON:1311,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 iva2_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0,RET-MEMBANK3-OFF:0,RET-MEMBANK4-OFF:0 usbhost_clkdm->usbhost_pwrdm (1) sgx_clkdm->sgx_pwrdm (0) per_clkdm->per_pwrdm (14) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) d2d_clkdm->core_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) core_l4_clkdm->core_pwrdm (22) core_l3_clkdm->core_pwrdm (1) neon_clkdm->neon_pwrdm (0) root@beagleboard:~# root@beagleboard:~# echo enabled > /sys/devices/44000000.ocp/48020000.serial/tty /ttyO2/power/wakeup -sh: cannot create /sys/devices/44000000.ocp/48020000.serial/tty/ttyO2/power/wakeup: nonexistent directory root@beagleboard:~# %% Start retention double suspend/resume UART wakeup test echo mem > /sys/power/state [ 32.020080] PM: Syncing filesystems ... done. [ 33.260711] PM: Preparing system for mem sleep [ 33.282775] Freezing user space processes ... (elapsed 0.002 seconds) done. [ 33.289886] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done. [ 33.297332] PM: Entering mem sleep [ 33.299194] Suspending console(s) (use no_console_suspend to debug) [ 33.327484] PM: suspend of devices complete after 18.890 msecs [ 33.333648] PM: late suspend of devices complete after 6.134 msecs [ 33.340698] PM: noirq suspend of devices complete after 6.896 msecs [ 33.340789] Disabling non-boot CPUs ... [ 33.340881] Successfully put all powerdomains to target state [ 33.345153] PM: noirq resume of devices complete after 4.180 msecs [ 33.351135] PM: early resume of devices complete after 4.547 msecs [ 33.422668] PM: resume of devices complete after 71.411 msecs [ 33.455780] PM: Finishing wakeup. [ 33.457611] Restarting tasks ... done. root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:1419,INA:0,ON:1420,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 core_pwrdm (ON),OFF:0,RET:1,INA:0,ON:2,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 per_pwrdm (ON),OFF:0,RET:1,INA:0,ON:2,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (ON),OFF:0,RET:1419,INA:0,ON:1420,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 neon_pwrdm (ON),OFF:0,RET:1419,INA:0,ON:1420,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:1419,INA:0,ON:1420,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 iva2_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0,RET-MEMBANK3-OFF:0,RET-MEMBANK4-OFF:0 usbhost_clkdm->usbhost_pwrdm (1) sgx_clkdm->sgx_pwrdm (0) per_clkdm->per_pwrdm (14) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) d2d_clkdm->core_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) core_l4_clkdm->core_pwrdm (27) core_l3_clkdm->core_pwrdm (1) neon_clkdm->neon_pwrdm (0) root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# echo mem > /sys/power/state [ 35.560607] PM: Syncing filesystems ... done. [ 36.808074] PM: Preparing system for mem sleep [ 36.812713] Freezing user space processes ... (elapsed 0.002 seconds) done. [ 36.819030] Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done. [ 36.825408] PM: Entering mem sleep [ 36.827270] Suspending console(s) (use no_console_suspend to debug) [ 36.850006] PM: suspend of devices complete after 13.549 msecs [ 36.856170] PM: late suspend of devices complete after 6.134 msecs [ 36.862762] PM: noirq suspend of devices complete after 6.530 msecs [ 36.862884] Disabling non-boot CPUs ... [ 36.862976] Successfully put all powerdomains to target state [ 36.866882] PM: noirq resume of devices complete after 3.875 msecs [ 36.872863] PM: early resume of devices complete after 4.638 msecs [ 36.941406] PM: resume of devices complete after 68.420 msecs [ 36.973846] PM: Finishing wakeup. [ 36.975646] Restarting tasks ... done. root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:1522,INA:0,ON:1523,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 per_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (ON),OFF:0,RET:1522,INA:0,ON:1523,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 neon_pwrdm (ON),OFF:0,RET:1522,INA:0,ON:1523,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:1522,INA:0,ON:1523,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 iva2_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0,RET-MEMBANK3-OFF:0,RET-MEMBANK4-OFF:0 usbhost_clkdm->usbhost_pwrdm (1) sgx_clkdm->sgx_pwrdm (0) per_clkdm->per_pwrdm (14) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) d2d_clkdm->core_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) core_l4_clkdm->core_pwrdm (27) core_l3_clkdm->core_pwrdm (1) neon_clkdm->neon_pwrdm (0) root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# ./test_rootfs_access_nonexistent_file__ret_susp -sh: ./test_rootfs_access_nonexistent_file__ret_susp: not found root@beagleboard:~# root@beagleboard:~# %% End retention double suspend/resume UART wakeup test %% Start retention dynamic idle UART wakeup test for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.seria l | paste -s -d' '`; do echo 3000 > $u/power/autosuspend_delay_ms; done root@beagleboard:~# root@beagleboard:~#