APPLIED[R/N:hwe-6.17]: [SRU][Stonking][Resolute][Questing][PATCH 0/1] Camera output is vague and color is abnormal

[Edoardo Canepa]

Applied to R:linux/master-next and N:linux/hwe-6.17-next. Thanks.

On 6/30/26 19:19, You-Sheng Yang via kernel-team wrote:
> BugLink: https://bugs.launchpad.net/bugs/2156972
>
> [Impact]
>
> The camera output is abnormal, and it takes longer time to start the camera.
>
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: DPHY recoverable synchronization error
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: Single packet header error corrected
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: Payload checksum (CRC) error
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: DPHY recoverable synchronization error
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: Single packet header error corrected
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: Payload checksum (CRC) error
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: DPHY recoverable synchronization error
> kernel: intel_ipu6_isys.isys intel_ipu6.isys.40: csi2-0 error: Single packet header error corrected
>
> [Fix]
>
> Upstream commit 477620dccf3e ("media: intel/ipu6: Improve DWC PHY
> HSFREQRANGE band selection for overlapping ranges") in v7.2-rc1 fixes
> commit 1e7eeb301696 ("media: intel/ipu6: add the CSI2 DPHY
> implementation") from v6.10.
>
> [Test Plan]
>
> 1. capture video stream and verify the video quality.
>
>     $ gst-launch-1.0 v4l2src ! videoconvert ! avimux ! filesink location=out.avi
>
> 2. check no error found in dmesg
>
>     $ sudo dmesg |grep intel_ipu6_isys
>
> [Where problems could occur]
>
> The regression can be considered as low, because the patch is meant to
> locate a band with higher osc_freq_target for best hardware utilization.
> No other part is touched.
>
> [Other Info]
>
> While this affects kernels >= v6.10, nominate for all the newer kernels.
> And since this is already in v7.2-rc1, skip Unstable.
>
> Marco Nenciarini (1):
>    media: intel/ipu6: Improve DWC PHY HSFREQRANGE band selection for
>      overlapping ranges
>
>   .../media/pci/intel/ipu6/ipu6-isys-dwc-phy.c  | 26 ++++++++++++++-----
>   1 file changed, 19 insertions(+), 7 deletions(-)
>
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