Hi Philip..
I have something question..did you test SDMA and ADMA?
Actually i didn't test [patch v3] but i tested patch v2 before Per sent.
I got that SDMA is faster than ADMA. (using bounce buffer and sdhci)
How do you think about that? I want to know your thought.
And if you can share the resu
On May 9, 2011, at 5:34 AM, Per Forlin wrote:
> On 9 May 2011 04:05, Philip Rakity wrote:
>>
>> Hi Per,
>>
>> We noticed on some of our systems if we ADMA or SDMA and a bounce buffer it
>> is significantly faster then SDMA.
>>
> I have not done work with ADMA or SDMA. Where should I look to
On 9 May 2011 04:05, Philip Rakity wrote:
>
> Hi Per,
>
> We noticed on some of our systems if we ADMA or SDMA and a bounce buffer it
> is significantly faster then SDMA.
>
I have not done work with ADMA or SDMA. Where should I look to read
more about it?
Are these the right places. DMA iop-dma.c
Hi Per,
We noticed on some of our systems if we ADMA or SDMA and a bounce buffer it is
significantly faster then SDMA.
I believe ADMA will do large transfers. Another data point.
Philip
On May 7, 2011, at 12:14 PM, Per Forlin wrote:
> How significant is the cache maintenance over head?
> It
How significant is the cache maintenance over head?
It depends, the eMMC are much faster now
compared to a few years ago and cache maintenance cost more due to
multiple cache levels and speculative cache pre-fetch. In relation the
cost for handling the caches have increased and is now a bottle neck
