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| author |   Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-09-18 01:20:59 -0700 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2017-10-16 16:54:45 -0700 |
| commit | 7571358dd22dc91dea560f0dde62ce23c033b6b6 (patch) | |
| tree | 546f7efccaa2e7607d5b223fb94c8e20f2b432c6 /Documentation/devicetree/bindings/media | |
| parent | media: dt: bindings: media: Document practices for DT bindings, ports, endpoints (diff) | |
| download | linux-dev-7571358dd22dc91dea560f0dde62ce23c033b6b6.tar.xz linux-dev-7571358dd22dc91dea560f0dde62ce23c033b6b6.zip | |
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: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'Documentation/devicetree/bindings/media')
| -rw-r--r-- | Documentation/devicetree/bindings/media/video-interfaces.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index bc8f18fb6730..bd6474920510 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -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>;", |