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

[Christian Zigotzky <chzigotzky@xxxxxxxxxxx>]

On 28 September 2024 at 01:46pm, Christian Zigotzky wrote:

> 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@xxxxxxxxxxx> 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@xxxxxxxxxx>
> > >           
> > >            >> 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.
>       
>     
    
    Hi All,
    
    Sorry, I have forgotten to add the boot arguments "console=ttyS0,115200" for the connecting
    of my FSL P5040 board with a serial cable to my PC.
    
    Now, I have a serial log file with Radeon error messages (kernel
    trace). :-)
    
    Link: https://www.xenosoft.de/PuTTY_P5040_U-Boot.log
    
    I hope, you have an idea. The FSL P5020 boards aren't affected.
    
    Thanks,
    Christian