Re: [PATCH v2 00/10] R-Car DU: LVDS dual-link mode support

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Geert,

On Sun, May 12, 2019 at 10:55:20AM +0200, Geert Uytterhoeven wrote:
> On Sat, May 11, 2019 at 11:07 PM Laurent Pinchart wrote:
> > On the receiving side, the THC63LVD1024 LVDS-to-parallel bridge has two
> > LVDS inputs and two parallel outputs. It can operate in four different
> > modes:
> >
> > - Single-in, single-out: The first LVDS input receives the video stream,
> >   and the bridge outputs it on the first parallel output. The second
> >   LVDS input and the second parallel output are not used.
> >
> > - Single-in, dual-out: The first LVDS input receives the video stream,
> >   and the bridge splits even- and odd-numbered pixels and outputs them
> >   on the first and second parallel outputs. The second LVDS input is not
> >   used.
> >
> > - Dual-in, single-out: The two LVDS inputs are used in dual-link mode,
> >   and the bridge combines the even- and odd-numbered pixels and outputs
> >   them on the first parallel output. The second parallel output is not
> >   used.
> >
> > - Dual-in, dual-out: The two LVDS inputs are used in dual-link mode,
> >   and the bridge outputs the even- and odd-numbered pixels on the first
> >   parallel output.
> 
> and the second?

I should have read "on the first and second parallel outputs
respectively" indeed.

> > The operating mode is selected by two input pins of the bridge, which
> > are connected to DIP switches on the development boards I use. The mode
> > is thus fixed from a Linux point of view.
> 
> Can the state of these switches be read from software?

Unfortunately not :-(

-- 
Regards,

Laurent Pinchart