怘€æ€˜€`3f<€fÀæøÀ̆ž?`??f?æžf<øž`??ð3ž<3ž<` 3000 mV at 3000 mV [ 1.328216] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 1.342315] omap_uart 4806a000.serial: no wakeirq for uart0 [ 1.343353] 4806a000.serial: ttyO0 at MMIO 0x4806a000 (irq = 88, base_baud = 3000000) is a OMAP UART0 [ 1.348571] omap_uart 4806c000.serial: no wakeirq for uart0 [ 1.349151] 4806c000.serial: ttyO1 at MMIO 0x4806c000 (irq = 89, base_baud = 3000000) is a OMAP UART1 [ 1.353088] omap_uart 49020000.serial: no wakeirq for uart0 [ 1.353607] 49020000.serial: ttyO2 at MMIO 0x49020000 (irq = 90, base_baud = 3000000) is a OMAP UART2 [ 1.757781] console [ttyO2] enabled [ 1.815368] brd: module loaded [ 1.848907] loop: module loaded [ 1.873229] twl 0-0048: PIH (irq 23) chaining IRQs 306..314 [ 1.877014] twl 0-0048: power (irq 311) chaining IRQs 314..321 [ 1.890930] VAUX1: at 3000 mV [ 1.901031] vdd_ehci: 1800 mV [ 1.907745] VAUX3: at 2800 mV [ 1.914367] VAUX4: at 2800 mV [ 1.920898] VDD1: 600 <--> 1450 mV at 1200 mV [ 1.928741] VDAC: 1800 mV [ 1.938964] VIO: at 1800 mV [ 1.946685] VINTANA1: 1500 mV [ 1.955047] VINTANA2: at 2750 mV [ 1.963134] VINTDIG: 1500 mV [ 1.968811] VMMC1: 1850 <--> 3150 mV at 3000 mV [ 1.976715] VMMC2: 1850 <--> 3150 mV at 2600 mV [ 1.983184] VUSB1V5: 1500 mV [ 1.987518] VUSB1V8: 1800 mV [ 1.993682] VUSB3V1: 3100 mV [ 2.002014] VPLL1: at 1800 mV [ 2.011291] VPLL2: 1800 mV [ 2.017791] VSIM: 1800 <--> 3000 mV at 1800 mV [ 2.024810] twl4030_gpio twl4030-gpio: gpio (irq 306) chaining IRQs 322..339 [ 2.045745] mtdoops: mtd device (mtddev=name/number) must be supplied [ 2.066345] usbcore: registered new interface driver asix [ 2.069763] usbcore: registered new interface driver ax88179_178a [ 2.073364] usbcore: registered new interface driver cdc_ether [ 2.076965] usbcore: registered new interface driver smsc95xx [ 2.080505] usbcore: registered new interface driver net1080 [ 2.083892] usbcore: registered new interface driver cdc_subset [ 2.087432] usbcore: registered new interface driver zaurus [ 2.091033] usbcore: registered new interface driver cdc_ncm [ 2.112823] usbcore: registered new interface driver cdc_wdm [ 2.116333] usbcore: registered new interface driver usb-storage [ 2.120269] usbcore: registered new interface driver usbtest [ 2.130462] mousedev: PS/2 mouse device common for all mice [ 2.135375] twl4030_keypad 48070000.i2c:twl@48:keypad: OF: linux,keymap property not defined in /ocp/i2c@48070000/twl@48/keypad [ 2.141876] twl4030_keypad 48070000.i2c:twl@48:keypad: Failed to build keymap [ 2.145904] twl4030_keypad: probe of 48070000.i2c:twl@48:keypad failed with error -2 [ 2.160430] input: twl4030_pwrbutton as /devices/68000000.ocp/48070000.i2c/i2c-0/0-0048/48070000.i2c:twl@48:pwrbutton/input/input1 [ 2.174896] twl_rtc 48070000.i2c:twl@48:rtc: Power up reset detected. [ 2.179962] twl_rtc 48070000.i2c:twl@48:rtc: Enabling TWL-RTC [ 2.194671] twl_rtc 48070000.i2c:twl@48:rtc: rtc core: registered 48070000.i2c:twl@48 as rtc0 [ 2.203186] i2c /dev entries driver [ 2.210601] Driver for 1-wire Dallas network protocol. [ 2.222961] omap_wdt: OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec [ 2.311981] ledtrig-cpu: registered to indicate activity on CPUs [ 2.316345] usbcore: registered new interface driver usbhid [ 2.319671] usbhid: USB HID core driver [ 2.325378] oprofile: using arm/armv7 [ 2.329101] TCP: cubic registered [ 2.330963] Initializing XFRM netlink socket [ 2.333587] NET: Registered protocol family 17 [ 2.336181] NET: Registered protocol family 15 [ 2.339508] Key type dns_resolver registered [ 2.342285] omap2_set_init_voltage: unable to find boot up OPP for vdd_mpu_iva [ 2.346221] omap2_set_init_voltage: unable to set vdd_mpu_iva [ 2.349578] omap2_set_init_voltage: unable to find boot up OPP for vdd_core [ 2.353393] omap2_set_init_voltage: unable to set vdd_core [ 2.360198] PM: no software I/O chain control; some wakeups may be lost [ 2.367065] ThumbEE CPU extension supported. [ 2.369659] Registering SWP/SWPB emulation handler [ 2.372314] SmartReflex Class3 initialized [ 2.395965] hsusb2_vbus: 3300 mV [ 2.407623] input: gpio_keys as /devices/gpio_keys/input/input2 [ 2.417480] twl_rtc 48070000.i2c:twl@48:rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800) [ 2.422943] sr_init: No PMIC hook to init smartreflex [ 2.426544] smartreflex smartreflex.0: omap_sr_probe: SmartReflex driver initialized [ 2.431335] smartreflex smartreflex.0: omap_sr_probe: smartreflex_mpu_iva: No Voltage table for the corresponding vdd. Cannot create debugfs entries for n-values [ 2.440093] smartreflex: probe of smartreflex.0 failed with error -61 [ 2.443939] smartreflex smartreflex.1: omap_sr_probe: SmartReflex driver initialized [ 2.448638] smartreflex smartreflex.1: omap_sr_probe: smartreflex_core: No Voltage table for the corresponding vdd. Cannot create debugfs entries for n-values [ 2.456726] smartreflex: probe of smartreflex.1 failed with error -61 [ 2.460632] sr_init: platform driver register failed for SR [ 2.560821] hsusb2_vbus: disabling [ 2.566009] VUSB3V1: disabling [ 2.569946] VUSB1V8: disabling [ 2.573486] VUSB1V5: disabling [ 2.578369] VDAC: disabling [ 2.583618] VAUX3: disabling [ 2.594238] Waiting for root device /dev/mmcblk0p2... [ 2.722290] mmc0: host does not support reading read-only switch. assuming write-enable. [ 2.727111] mmc0: new SD card at address 8001 [ 2.734588] mmcblk0: mmc0:8001 SD02G 1.89 GiB [ 2.746490] mmcblk0: p1 p2 [ 4.109313] kjournald starting. Commit interval 5 seconds [ 4.112884] EXT3-fs (mmcblk0p2): warning: maximal mount count reached, running e2fsck is recommended [ 4.298187] EXT3-fs (mmcblk0p2): using internal journal [ 4.306030] EXT3-fs (mmcblk0p2): recovery complete [ 4.308776] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode [ 4.312744] VFS: Mounted root (ext3 filesystem) on device 179:2. [ 4.322540] devtmpfs: mounted [ 4.325775] Freeing unused kernel memory: 404K (c07bc000 - c0821000) INIT: version 2.86 booting Starting the hotplug events dispatcher udevd [ 5.629882] udevd (854): /proc/854/oom_adj is deprecated, please use /proc/854/oom_score_adj instead. Synthesizing the initial hotplug events [ 12.844329] random: nonblocking pool is initialized [ 18.314727] 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/3.16.0-rc7-next-20140729-89426-gb4cf577: No such file or directory FATAL: Could not open /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/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/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory ifconfig: SIOCGIFFLAGS: No such device modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory eth0 No such device modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/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/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/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:modprobe: FATAL: Could not load /lib/modules/3.16.0-rc7-next-20140729-89426-gb4cf577/modules.dep: No such file or directory hcid 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[2209]: 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 mount: none already mounted or /debug busy mount: according to mtab, debugfs is already mounted on /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:~# for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.seria l | paste -s -d' '`; do ls -l $u/power/autosuspend_delay_ms; cat $u/power/autos uspend_delay_ms; done -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/4806a000.serial/power/autosuspend_delay_ms -1 -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/4806c000.serial/power/autosuspend_delay_ms -1 -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/49020000.serial/power/autosuspend_delay_ms -1 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:1119,INA:0,ON:1120,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:1119,INA:0,ON:1120,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:641,INA:478,ON:1120,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:641,INA:478,ON:1120,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 (12) 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:~# for u in `ls -1d /sys/class/tty/ttyO* | paste -s -d' '`; do echo enabled > $u/power/wakeup; done root@beagleboard:~# %% Start retention double suspend/resume UART wakeup test root@beagleboard:~# for u in `ls -1d /sys/class/tty/ttyO* | paste -s -d' '`; do echo auto > $u/power/control; done root@beagleboard:~# root@beagleboard:~# for u in `ls -1d /sys/class/tty/ttyO* | paste -s -d' '`; do ls -l $u/power/wakeup; cat $u/power/wakeup; done -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO0/power/wakeup enabled -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO1/power/wakeup enabled -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO2/power/wakeup enabled for u in `ls -1d /sys/class/tty/ttyO* | paste -s -d' '`; do ls -l $u/power/control; cat $u/power/control; done root@beagleboard:~# root@beagleboard:~# for u in `ls -1d /sys/class/tty/ttyO* | paste -s -d' '`; do ls -l $u/power/control; cat $u/power/control; done -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO0/power/control auto -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO1/power/control auto -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/class/tty/ttyO2/power/control echo mem > /sys/power/state auto root@beagleboard:~# root@beagleboard:~# echo mem > /sys/power/state [ 36.289062] PM: Syncing filesystems ... done. [ 36.882720] Freezing user space processes ... (elapsed 0.004 seconds) done. [ 36.890838] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done. [ 36.898132] Suspending console(s) (use no_console_suspend to debug) [ 36.940399] PM: suspend of devices complete after 30.273 msecs [ 36.950775] PM: late suspend of devices complete after 10.345 msecs [ 36.962554] PM: noirq suspend of devices complete after 11.749 msecs [ 36.962707] Disabling non-boot CPUs ... [ 36.962860] Successfully put all powerdomains to target state [ 36.969482] PM: noirq resume of devices complete after 6.530 msecs [ 36.978088] PM: early resume of devices complete after 7.110 msecs [ 37.151977] PM: resume of devices complete after 173.736 msecs [ 37.186767] Restarting tasks ... done. root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:1265,INA:0,ON:1266,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:1265,INA:0,ON:1266,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:774,INA:491,ON:1266,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:774,INA:491,ON:1266,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 (12) 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 [ 39.179382] PM: Syncing filesystems ... done. [ 39.905212] Freezing user space processes ... (elapsed 0.002 seconds) done. [ 39.911437] Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done. [ 39.917724] Suspending console(s) (use no_console_suspend to debug) [ 39.947601] PM: suspend of devices complete after 18.249 msecs [ 39.958007] PM: late suspend of devices complete after 10.345 msecs [ 39.968994] PM: noirq suspend of devices complete after 10.955 msecs [ 39.969024] Disabling non-boot CPUs ... [ 39.969146] Successfully put all powerdomains to target state [ 39.975372] PM: noirq resume of devices complete after 6.164 msecs [ 39.983917] PM: early resume of devices complete after 7.080 msecs [ 40.160919] PM: resume of devices complete after 176.849 msecs [ 40.194610] Restarting tasks ... done. root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# root@beagleboard:~# cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:1394,INA:0,ON:1395,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:1394,INA:0,ON:1395,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:892,INA:502,ON:1395,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:892,INA:502,ON:1395,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 (12) 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:~# for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.seria l | paste -s -d' '`; do ls -l $u/power/autosuspend_delay_ms; cat $u/power/autos uspend_delay_ms; done -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/4806a000.serial/power/autosuspend_delay_ms 3000 -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/4806c000.serial/power/autosuspend_delay_ms 3000 -rw-r--r-- 1 root root 4096 Jul 22 00:18 /sys/bus/platform/drivers/omap_uart/49020000.serial/power/autosuspend_delay_ms 3000 root@beagleboard:~# root@beagleboard:~#