[linux-dvb] Re: Slow i2c problem -- temporary patch

[Michael Hunold <hunold@convergence.de>]

Hello Andrew,

> 1) Is there a reason for the i2c bitrate to be set to 10kHz right now? Perhaps 
> some cards have very slow i2c components? It is fine on the tda10045h-based 
> cards
My analog cards have rather slow i2c components, but 10kHz is really the 
lower bound. I never bother to change it, because only a couple of bytes 
are send on these cards.

> 2) I've changed the wait-for-status-delay to use mdelay()... which is not 
> ideal as we are now effectively busy waiting, but the current 1 jiffy delay 
> is WAY too much at the new speed. At 275kHz, it doesn't  delay for long 
> enough for this to be significant though.
If Robert's code works reliable, we should go for that and don't wait at 
all and use a higher transmission rate.

CU
Michael.




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