lkml.org 
[lkml]   [2018]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] mtd: nand: raw: atmel: add module param to avoid using dma
From
Date
[...]


>
> I think you're missing something here. We use the DMA engine in memcpy
> mode (SRAM -> DRAM), not in device mode (dev -> DRAM or DRAM -> dev).
> So there's no dmas prop defined in the DT and there should not be.
>
> Regards,
>
> Boris
>

Ok, so the memcpy SRAM <-> DRAM will hog the transfer between DRAM and
LCD if my understanding is correct. That's the DMA that Peter wants to
disable with his patch ?

Then we can then try to force NFC SRAM DMA channels to use just DDR port
1 or 2 for memcpy ?

I have also received a suggestion to try to increase the porches in
LCDC_LCDCFG3 .

>>
>> >> [...]
>
>

\
 
 \ /
  Last update: 2018-05-29 17:08    [W:0.095 / U:5.132 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site