[linux-dvb] dib0700 problems (nova-T usb stick)

Patrick Boettcher patrick.boettcher at desy.de
Thu Jun 7 17:15:28 CEST 2007


Hi,

The biggest problem is, that we have no time to investigate the issue and 
it is no problem on the Windows-platform (because of a different call 
sequence).

It has nothing to with the I2C-gating used. It is a basic problem of doing 
I2C while streaming is enabled. Not 100% what is exactly the problem.

I filed the problem to the correct guys at DiBcom - they will see (sooner 
or later).

Sorry,
Patrick.

On Thu, 7 Jun 2007, Soeren Moch wrote:
> Hello Patrick!
> 
> Patrick Boettcher wrote:
> > It is _no_ hardware restriction.
> > 
> > The symptoms described by Soeren is correct, but the conclusion is 
> wrong. 
> > 
> > In fact this behaviour seems to be specific to the open source driver, 
> we 
> > don't have this problem in our reference driver.
> 
> The "I2C gating feature" seems to be related to the REQUEST_ENABLE_VIDEO
> firmware call. If the same hardware with same firmware does not show this
> behavior with your reference drivers, are there other parameters in your
> reference REQUEST_ENABLE_VIDEO call?
> Maybe this I2C gating is done externally via some gpio pins?
> (Without schematic, datasheets and firmware code it is difficult to get
> the big picture.)
> 
> > If I only would have time, I would take a look. 
> 
> Sorry for asking again. Maybe you can solve tuning and frontend status
> problems by "simply" changing the firmware call parameters. If I can
> be helpful in any way, don't hesitate to ask.
> 
> > Did you try the new firmware?
> > 
> > Patrick.
> > 
> 
> Thank you,
> S:oren
> 



More information about the linux-dvb mailing list