On Sun, Jun 19, 2022 at 02:28:55AM +0200, Marek Vasut wrote: > On 6/19/22 01:20, Laurent Pinchart wrote: > > Hi Marek, > > > > Thank you for the patch. > > > > On Sun, Jun 19, 2022 at 12:23:35AM +0200, Marek Vasut wrote: > >> Unless the V4L2 device calls v4l2_device_register_subdev_nodes(), > >> the /dev/v4l-subdev* sub-device nodes are not registered and thus > >> not created. Add the missing call. > > > > This driver configures the subdevs internally. Exposing the subdev nodes > > to userspace would conflict with driver operation. > > > > If you need the subdev nodes only to query subdev information, you can > > use v4l2_device_register_ro_subdev_nodes(). Ideally I'd prefer this > > driver to expose subdev nodes to userspace and stop propagating formats > > internally, but that may break applications :-( > > I need those subdevs to configure e.g. test pattern on the sensor side. Doesn't the dcmi driver expose the sensor controls on the video node ? -- Regards, Laurent Pinchart
