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

[Michael Tretter <m.tretter@pengutronix.de>]

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?

Michael

> > 
> > Signed-off-by: Michael Tretter <michael.tretter@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