[U-Boot] [PATCH] odroid: set MPLL clock to 880MHz

Przemyslaw Marczak p.marczak at samsung.com
Fri Sep 5 12:50:56 CEST 2014


Hello Minkyu,

On 09/05/2014 08:55 AM, Minkyu Kang wrote:
> On 24/07/14 19:42, Przemyslaw Marczak wrote:
>> This patch changes MPLL from 800MHz to 880MHz on Odroid.
>>
>> Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
>> ---
>>   board/samsung/odroid/odroid.c | 60 +++++++++++++++++++++----------------------
>>   1 file changed, 30 insertions(+), 30 deletions(-)
>>
>
> applied to u-boot-samsung.
>
> Thanks,
> Minkyu Kang.
>
>
Thank you for applying the Odroid patch set.

I would like to note, that this one patch was intended for MR. Daniel 
just for his tests.

This patch breaks dw mmc performance:
e.g. eMMC uImage(fat) read performance:
- before this commit: 47.6 MiB/s
- after this commit: 13.0 MiB/s
So this requires some more changes in clocks and also in dw mmc driver.

And it can break some kernel clocks divider dependencies.
It is not tested.

So please revert this patch.

Best Regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com


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