[PATCH v2 0/2] media: staging: imx: fix multiple video input

[Michael Tretter]

Hi Laurent, hi Hans,

On Fri, 23 Jan 2026 14:34:29 -0500, Frank Li wrote:
> On Fri, Jan 23, 2026 at 05:58:57PM +0100, Michael Tretter wrote:
> > On Thu, 18 Dec 2025 10:09:07 +0100, Michael Tretter wrote:
> > > On Fri, 07 Nov 2025 11:34:32 +0100, Michael Tretter wrote:
> > > > If the IMX media pipeline is configured to receive multiple video
> > > > inputs, the second input stream may be broken on start. This happens if
> > > > the IMX CSI hardware has to be reconfigured for the second stream, while
> > > > the first stream is already running.
> > > >
> > > > The IMX CSI driver configures the IMX CSI in the link_validate callback.
> > > > The media pipeline is only validated on the first start. Thus, any later
> > > > start of the media pipeline skips the validation and directly starts
> > > > streaming. This may leave the hardware in an inconsistent state compared
> > > > to the driver configuration. Moving the hardware configuration to the
> > > > stream start to make sure that the hardware is configured correctly.
> > > >
> > > > Patch 1 removes the caching of the upstream mbus_config in
> > > > csi_link_validate and explicitly request the mbus_config in csi_start,
> > > > to get rid of this implicit dependency.
> > > >
> > > > Patch 2 actually moves the hardware register setting from
> > > > csi_link_validate to csi_start to fix the skipped hardware
> > > > reconfiguration.
> > >
> > > Gentle ping.
> >
> > Is there anything still missing to get these patches applied?

I'm not entirely sure, who is responsible for applying patches for
media-imx. You handled the last few patches for this driver. Maybe you
could apply these patches, too?

I also sent another series [0] for media-imx. Can you handle this other
series, as well?

Michael

[0] https://lore.kernel.org/linux-media/20251218-media-imx-cleanup-v2-0-9e3e3c269f7f@pengutronix.de/

> > > >
> > > > Signed-off-by: Michael Tretter <michael.tretter at pengutronix.de>
> > > > ---
> > > > Changes in v2:
> > > > - Document changed locking in commit message
> > > > - Link to v1: https://lore.kernel.org/r/20251105-media-imx-fixes-v1-0-99e48b4f5cbc@pengutronix.de
> > > >
> > > > ---
> > > > Michael Tretter (2):
> > > >       media: staging: imx: request mbus_config in csi_start
> > > >       media: staging: imx: configure src_mux in csi_start
> > > >
> > > >  drivers/staging/media/imx/imx-media-csi.c | 84 ++++++++++++++++++-------------
> > > >  1 file changed, 48 insertions(+), 36 deletions(-)
> > > > ---
> > > > base-commit: 27afd6e066cfd80ddbe22a4a11b99174ac89cced
> > > > change-id: 20251105-media-imx-fixes-acef77c7ba12
>