Hi Pavel, On Wed, Dec 28, 2016 at 07:30:36PM +0100, Pavel Machek wrote: > From: Sakari Ailus <sakari.ai...@iki.fi> > > In the vast majority of cases the bus type is known to the driver(s) > since a receiver or transmitter can only support a single one. There > are cases however where different options are possible. > > Document the CSI1/CCP2 properties strobe_clk_inv and strobe_clock > properties. The former tells whether the strobe/clock signal is > inverted, while the latter signifies the clock or strobe mode. > > Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi> > Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov...@gmail.com> > Signed-off-by: Pavel Machek <pa...@ucw.cz> > > diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt > b/Documentation/devicetree/bindings/media/video-interfaces.txt > index 9cd2a36..f0523f7 100644 > --- a/Documentation/devicetree/bindings/media/video-interfaces.txt > +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt > @@ -76,6 +76,10 @@ Optional endpoint properties > mode horizontal and vertical synchronization signals are provided to the > slave device (data source) by the master device (data sink). In the master > mode the data source device is also the source of the synchronization > signals. > +- bus-type: data bus type. Possible values are: > + 0 - CSI2 > + 1 - parallel / Bt656 > + 2 - CCP2
I wonder if we should make a difference between CCP2 and CSI-1 here, as it may make a difference in hardware configuration. The next patch does recognise that difference, so it should be present here as well. Perhaps 2 - CSI1; 3 - CCP2. What do you think? > - bus-width: number of data lines actively used, valid for the parallel > busses. > - data-shift: on the parallel data busses, if bus-width is used to specify > the > number of data lines, data-shift can be used to specify which data lines > are > @@ -110,9 +114,10 @@ Optional endpoint properties > lane and followed by the data lanes in the same order as in data-lanes. > Valid values are 0 (normal) and 1 (inverted). The length of the array > should be the combined length of data-lanes and clock-lanes properties. > - If the lane-polarities property is omitted, the value must be interpreted > - as 0 (normal). This property is valid for serial busses only. > - > +- clock-inv: Clock or strobe signal inversion. > + Possible values: 0 -- not inverted; 1 -- inverted > +- strobe: Whether the clock signal is used as clock or strobe. Used > + with CCP2, for instance. > > Example > ------- > > -- Kind regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
