Re: [U-Boot] [PATCH] CFI Driver: Reset watchdog timer after each flash operation

2 Oct 2009


      Dear Ingo van Lil,
In message 20091002103417.GA9767@zaphod.peppercon.de you wrote:
...
The CFI driver does not reset the device's watchdog, so long-running
flash operations will cause the watchdog timer to expire. A comment in
flash_status_check() suggests that udelay() is expected to reset the
watchdog, but I can't find any architecture where it does.
Please have a closer look, then. On PowerPC, udelay()
["lib_ppc/time.c"] calls wait_ticks(), which in turn
["lib_ppc/ticks.S"] calls WATCHDOG_RESET
If this is missing in other architectures, it should be fixed at the
root cause, i. e. in udelay() or in the respective support routines.
Best regards,
Wolfgang Denk
-- 
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