On 03/10/2023 14:52, Sakari Ailus wrote:
Having extra streams on the source end of the link that cannot be captured
by the sink sub-device generally are not an issue, at least not on CSI-2
bus. Still document that there may be hardware specific limitations. For
example on parallel bus this might not work on all cases.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
Documentation/userspace-api/media/v4l/dev-subdev.rst | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/dev-subdev.rst b/Documentation/userspace-api/media/v4l/dev-subdev.rst
index f375b820ab68..a387e8a15b8d 100644
--- a/Documentation/userspace-api/media/v4l/dev-subdev.rst
+++ b/Documentation/userspace-api/media/v4l/dev-subdev.rst
@@ -529,9 +529,9 @@ the its sink pad and allows to route them individually to one of its source
pads.
Subdevice drivers that support multiplexed streams are compatible with
-non-multiplexed subdev drivers, but, of course, require a routing configuration
-where the link between those two types of drivers contains only a single
-stream.
+non-multiplexed subdev drivers. However, if the driver at the sink end of a link
+does not support streams, then only the stream 0 on source end may be
+captured. There may be additional hardware specific limitations.
Understanding streams
^^^^^^^^^^^^^^^^^^^^^
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Tomi
