The same case works well on am335xevm but with a new patch in
mach-omap2/prcm.c

I'll send it later.

root at ti-omap3:~# uname -a
Linux ti-omap3 3.4.3-00635-g82d1d26-dirty #32 Wed Jul 11 16:02:12 CST
2012 armv7l GNU/Linux
root at ti-omap3:~# dmesg|grep WDT
[ 1.921173] omap_wdt: OMAP WDTimer Rev 0x01: Initial timeout 0sec
status= 0x1
root at ti-omap3:~# ./a.out -i 20; for i in `seq 1 20`; do echo $i ; sleep
1;done
Set watchdog interval to 20
Current watchdog interval is 20
Last boot is caused by : Watchdog
Use:
<w> to kick through writing over device file
<i> to kick through IOCTL
<x> to exit the program
x

1
2
[snip]
U-Boot SPL 2011.09 (Feb 09 2012 - 15:38:59)
Texas Instruments Revision detection unimplemented


U-Boot 2011.09 (Feb 09 2012 - 15:11:31)

I2C: ready
DRAM: 256 MiB
WARNING: Caches not enabled
Found a daughter card connected
NAND: HW ECC Hamming Code selected
256 MiB
MMC: OMAP SD/MMC: 0
Net: cpsw
Hit any key to stop autoboot: 0
U-Boot#

Regards,
Zumeng

? 2012?07?10? 12:17, Zumeng Chen ??:

? 2012?07?09? 15:35, Zumeng Chen ??:

quoted

Hello,

The following patches based on the 3.5-rc6 from Wim, which
focus on:

1 ) bootstatus fix for omap3,

2 ) omap-wdt framework update cater for the current framework
    as Shubhrajyoti comments mentioned.

I compiled a test case from the following website,
http://www.lpclinux.com/Blogs/Testing_LPC313x_Linux_Watchdog_Driver

It works well.

root at ti-omap3:/tmp# ./a.out -h
Usage: ./a.out [options]
-h --help Display this usage information.
-d --dev <device_file> Use <device_file> as watchdog device file.
The default device file is '/dev/watchdog'
-i --interval <interval> Change the watchdog interval time
root at ti-omap3:/tmp# ./a.out -i 40;
Set watchdog interval to 40
Current watchdog interval is 40
Last boot is caused by : Watchdog
Use:
<w> to kick through writing over device file
<i> to kick through IOCTL
<x> to exit the program
x
Goodbye !
watchdog: Omap Watchdog: nowayout prevents watchdog to be stopped!
watchdog: Omap Watchdog: watchdog did not stop!
root at ti-omap3:/tmp# for i in `seq 1 30`; do echo $i; sleep 1;done
1
2

[snip]

I built NOWAYOUT in driver, so it doesn't stop, still going until the
following
information:

Texas Instruments X-Loader 1.42
Starting OS Bootloader...
No OOB scheme defined for oobsize 0
OneNAND: 0 kB
256 MiB

Regards,
Zumeng

quoted

Regards,

Zumeng Chen (3):
  Watchdog: Omap: Changes for the new watchdog framework
  Watchdog: Omap: select watchdog core for framework change
  Watchdog: Omap: get the bootstatus for OMAP2Plus

 arch/arm/mach-omap2/prcm.c  |    5 +-
 drivers/watchdog/Kconfig    |    1 +
 drivers/watchdog/omap_wdt.c |  342 ++++++++++++++++---------------------------
 drivers/watchdog/omap_wdt.h |    5 +
 4 files changed, 133 insertions(+), 220 deletions(-)

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