[U-Boot-Users] [PATCH 01/10] [ARM] MXC: insert bus busy check in i2c_probe

Jens Gehrlein sew_s at tqs.de
Mon Jul 7 17:24:31 CEST 2008


Wolfgang Denk schrieb:
> In message <48720A3C.4040206 at tqs.de> you wrote:
>> You are right. 100 ms is too high, although it should be irrelevant for 
>> a U-Boot command. Measurement showed, that some 100 microseconds would 
>> be enough. Do you agree if I set the timeout value to 1 ms? Other proposals?
> 
> Never say 100 ms is irrelevant for U-Boot. It's 100 ms of total boot
> time that you burn for nothing.

If it was relevant for booting, you would be right. But this routine 
isn't executed at boot time. It's called by the iprobe command invoked 
by the user on the command line.

As I proposed, 1 ms should be sufficient.

Kind regards,
Jens




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