Hi Pavel,
On Wed, Jan 11, 2017 at 11:53:35PM +0100, Pavel Machek wrote:
> From: Sakari Ailus <[email protected]>
>
> 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.
>
> The existing V4L2 OF support tries to figure out the bus type and
> parse the bus parameters based on that. This does not scale too well
> as there are multiple serial busses that share common properties.
>
> Some hardware also supports multiple types of busses on the same
> interfaces.
>
> Document the CSI1/CCP2 property strobe. It signifies the clock or
> strobe mode.
>
> Signed-off-by: Sakari Ailus <[email protected]>
> Signed-off-by: Ivaylo Dimitrov <[email protected]>
> Signed-off-by: Pavel Machek <[email protected]>
>
> diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt
> b/Documentation/devicetree/bindings/media/video-interfaces.txt
> index 9cd2a36..08c4498 100644
> --- a/Documentation/devicetree/bindings/media/video-interfaces.txt
> +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
> @@ -76,6 +76,11 @@ 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 - MIPI CSI2
> + 1 - parallel / Bt656
Why not have separate values for parallel and BT.656?
baruch
> + 2 - MIPI CSI1
> + 3 - CCP2
> - 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
> @@ -112,7 +117,8 @@ Optional endpoint properties
> 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.
> -
> +- strobe: Whether the clock signal is used as clock or strobe. Used
> + with CCP2, for instance.
>
> Example
> -------
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