[U-Boot] [PATCH] 440spe MQ initialization

[Wolfgang Denk]

Dear Stefan,

In message <200809231237.12323.yur at emcraft.com> Yuri Tikhonov wrote:
> 
>  Set the MQ Read Passing & MCIF Cycle limits to the recommended by AMCC
> values. This fixes the occasional 440SPe hard locking issues when the 440SPe's
> dedicated DMA engines are used (e.g. by the h/w accelerated RAID driver).
> 
>  Previously the appropriate initialization had been made in Linux, by the
> ppc440spe ADMA driver, which is wrong because modifying the MQ configuration
> registers after normal operation has begun is not supported and could
> have unpredictable results.
> 
> Signed-off-by: Yuri Tikhonov <yur at emcraft.com>
> ---
>  cpu/ppc4xx/44x_spd_ddr2.c      |   10 ++++++----
>  include/asm-ppc/ppc4xx-sdram.h |    5 +++++
>  2 files changed, 11 insertions(+), 4 deletions(-)

I must admit that I lost  track  in  the  discussion  following  this
posting  what  the real state of affairs is now. Do we need to change
anything in U-Boot, or not, and why not?

Best regards,

Wolfgang Denk

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