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

[Christian Zigotzky]

Am 28.09.24 um 10:42 schrieb 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
I would like ... but I don't have time for it. Sorry.