Re: [PATCH 1/1] ACPI: scan: Ignore Dell XPS 9320 camera graph port nodes

Rafael J. Wysocki
2024-06-12T10:26:08Z

On Wed, Jun 12, 2024 at 12:08 PM Hans de Goede <hdegoede@redhat.com> wrote:
>
> Hi,
>
> On 6/6/24 8:12 PM, Hans de Goede wrote:
> > Hi,
> >
> > +To: Rafael since this was Cc-ed to linux-acpi but never send
> > to Rafael directly.
> >
> > Rafael this fixes a crash in 6.10-rc1 for some users and is necessary
> > to make the cameras work on the Dell XPS 13 plus 9320 .
> >
> > On 5/28/24 7:09 PM, Hans de Goede wrote:
> >> Hi Sakari,
> >>
> >> On 5/28/24 10:44 AM, Sakari Ailus wrote:
> >>> Ignore camera related graph port nodes on Dell XPS 9320. They data in BIOS
> >>> is buggy, just like it is for Dell XPS 9315. The corresponding software
> >>> nodes are created by the ipu-bridge.
> >>>
> >>> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> >>> ---
> >>> Hi,
> >>>
> >>> Could you test this and see whether it fixes the warning?
> >>>
> >>> The camera might work with this change, too.
> >>
> >> Thank you I just received a Dell XPS 13 plus 9320 myself to use
> >> for VSC testing and I can confirm that with this patch 6.10.0-rc1
> >> works, including giving a picture with the libcamera software ISP +
> >> 3 small libcamera patches.
> >
> > I forgot to add:
> >
> > Tested-by: Hans de Goede <hdegoede@redhat.com>
> > Reviewed-by: Hans de Goede <hdegoede@redhat.com>
>
> I just hit the same problem on another Dell laptop. It seems that
> all Dell laptops with IPU6 camera from the Tiger Lake, Alder Lake
> and Raptor Lake generations suffer from this problem.
>
> So instead of playing whack a mole with DMI matches we should
> simply disable ACPI MIPI DISCO support on all Dell laptops
> with those CPUs. I'm preparing a fix for this to replace
> the DMI matching now.
>
> Rafael, please drop this patch, my more generic fix will replace it
> and backporting will be easier without having the intermediate fix
> in the middle.

Dropping, thanks!