[U-Boot] watchdog not resetting beaglebone after timeout period

Belisko Marek marek.belisko at gmail.com
Thu Dec 11 11:55:05 CET 2014


Hi,

I'm using latest u-boot master
(9b416a9f4ca7cf5ac4d5f7143d67edde7f7d7326) running on beaglebone
(white). This board has watchdog enabled by default for 60 secs
timeout but in my case it's not resetting board after that amount of
time. I did check watchdog registers:

U-Boot# md.l 0x44e35000 30
44e35000: 502a0501 00000000 00000000 00000000    ..*P............
44e35010: 00000010 00000001 00000000 00000000    ................
44e35020: 00000000 00000020 ffe2005e ffe20000    .... ...^.......
44e35030: ffffedcb 00000000 00000000 00000000    ................
44e35040: 00000000 00000000 00004444 00000000    ........DD......
44e35050: 00000000 00000000 00000000 00000000    ................

and it seems value in register WDT_WCRR doesn't increment -> it could
mean that 32kHz clock isn't working? Any other ideas what to check?
Thanks.

BR,

marek

-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
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web: http://open-nandra.com


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