FSL P5040 board doesn't boot after DRM updates (drm-next-2024-09-19)

[Christophe Leroy]

Hi Christian,

Le 28/09/2024 à 09:40, Christian Zigotzky a écrit :
> On 28 September 2024 at 09:21am, Christian Zigotzky wrote:
>  >
>  >> On Sun, Sep 22, 2024 at 12:28 AM Christian Zigotzky
>  >> <chzigotzky at xenosoft.de> wrote:
>  >>>
>  >>> Hi All,
>  >>>
>  >>> The lastest Git kernel doesn't boot anymore after the latest DRM 
> updates
>  >>> (drm-next-2024-09-19). [1]
>  >>>
>  >>> I tested it with an AMD Radeon HD 6970 (Cayman XT) and with an AMD
>  >>> Radeon HD 5870 (Cypress XT).
>  >>>
>  >>> I reverted the DRM updates and after that the kernel boots without any
>  >>> problems.
>  >>>
>  >>> Please note: Due to a lack of time, I can't do a bisect.
>  >>>
>  >>> Please check the latest DRM updates.
> ------------
>  >>
>  >> Can you attach your dmesg output?  There was a regression in the dma
>  >> subsystem what was fixed by this commit:
>  >>
>  >> commit b348b6d17fd1d5d89b86db602f02be
>  >> a54a754bd8
>  >> Author: Leon Romanovsky <leon at kernel.org>
>  >> Date:   Sun Sep 22 21:09:48 2024 +0300
>  >>
>  >>    dma-mapping: report unlimited DMA addressing in IOMMU DMA path
>  >>
>  >> Alex
>  >>
> 
> ------------
> Hi Alex,
> 
> I tested the latest Git kernel on my FSL P5040 board today and it 
> doesn't boot. Our FSL P5020 boards boot without any problems.
> 
> I connected my FSL P5040 board with a serial cable to my PC for getting 
> error messages. Unfortunately there aren't any error messages after the 
> loading of the uImage.
> 
> This means, that the dma-mapping patch doesn't solve the boot issue.
> 
> Please check the latest DRM updates.

Can you bisect the problem ?

Christophe