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

2003-06-16 Thread Andrew de Quincey
On Monday 16 June 2003 11:25, Michael Hunold wrote: > 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

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

2003-06-16 Thread Michael Hunold
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, becau

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

2003-06-16 Thread Andrew de Quincey
> > 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. > > I modified you

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

2003-06-14 Thread Holger Waechtler
Andrew de Quincey wrote: Here's a temporary patch (for dvb-kernel CVS head) for those trying out the tda10045h driver. As per Robert's suggestion, I have upped the i2c bitrate to 275kHz, and I've reduced the delay while waiting for the i2c status. Issues: 1) Is there a reason for the i2c bitrate