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media: dt-bindings: media: Document data-enable-active property 

Add 'data-enable-active' property to endpoint node properties list.

The property allows to specify the polarity of the data-enable signal,
which when in active state determinates when data lines have to sampled
for valid pixel data.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Jacopo Mondi 2018-07-09 10:19:18 -04:00 committed by Mauro Carvalho Chehab
parent 3ab7801dfa
commit 75571ee0e5
1 changed files with 2 additions and 0 deletions
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Documentation/devicetree/bindings/media/video-interfaces.txt
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@ -113,6 +113,8 @@ Optional endpoint properties
Note, that if HSYNC and VSYNC polarities are not specified, embedded
synchronization may be required, where supported.
- data-active: similar to HSYNC and VSYNC, specifies data line polarity.
- data-enable-active: similar to HSYNC and VSYNC, specifies the data enable
signal polarity.
- field-even-active: field signal level during the even field data transmission.
- pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
signal.