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Commit 7571358d authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
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media: dt: bindings: media: Document data lane numbering without lane reordering 



Most devices do not support lane reordering and in many cases the
documentation of the data-lanes property is incomplete for such devices.
Document that in case the lane reordering isn't supported, monotonically
incremented values from 0 or 1 shall be used.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent a197c7fc

Documentation/devicetree/bindings/media/video-interfaces.txt

+4 −1
Original line number Diff line number Diff line
@@ -108,7 +108,10 @@ Optional endpoint properties 
  determines the logical lane number, while the value of an entry indicates

  physical lane, e.g. for 2-lane MIPI CSI-2 bus we could have

  "data-lanes = <1 2>;", assuming the clock lane is on hardware lane 0.

  This property is valid for serial busses only (e.g. MIPI CSI-2).

  If the hardware does not support lane reordering, monotonically

  incremented values shall be used from 0 or 1 onwards, depending on

  whether or not there is also a clock lane. This property is valid for

  serial busses only (e.g. MIPI CSI-2).

- clock-lanes: an array of physical clock lane indexes. Position of an entry

  determines the logical lane number, while the value of an entry indicates

  physical lane, e.g. for a MIPI CSI-2 bus we could have "clock-lanes = <0>;",