Re: [PATCH] media: imx219: Report streams using frame descriptors

[Sakari Ailus]

Moi,

On Thu, Jun 11, 2026 at 12:13:02PM +0300, Tomi Valkeinen wrote:
> From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> 
> Implement the .get_frame_desc() subdev operation to report information
> about streams to the connected CSI-2 receiver. This is required to let
> the CSI-2 receiver driver know about virtual channels and data types for
> each stream.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Reviewed-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
> [tomi.valkeinen: picked from "Generic line based metadata support, internal pads" series]
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
> ---
> This patch that adds .get_frame_desc() support to imx219 driver has been
> circulating for a few years, and is currently posted in "[PATCH v12
> 00/86] Generic line based metadata support, internal pads" series.
> 
> However, as some bridge drivers require modern drivers that support
> .get_frame_desc, specifically ds90ub960.c, let's pick the patch and
> queue it separately from the huge metadata series.

I've been recently working on
<URL:https://lore.kernel.org/linux-media/20260518164318.3367888-1-sakari.ailus@xxxxxxxxxxxxxxx/>.
In other words, drivers that have a single stream don't need this. We could
probably extend that further by making use of the routing information but I
think that should be left for later.

-- 
Terveisin,

Sakari Ailus