12 Mar
2013
12 Mar
'13
12:19 p.m.
On Monday 04 March 2013 02:20:08 Sonic Zhang wrote:
From: Scott Jiang scott.jiang.linux@gmail.com
BF5xx rx dma causes spi flash random read error. Accually spi controller has problems both on tx and rx dma. So remove spi dma support in u-boot.
this is wrong, and imo, unnecessary. it's wrong because using DMA gains a lot of speed increases, and works for in many cases (i haven't seen cases where it didn't work, but i haven't been actively developing in the last year of course). it's unnecessary because there's already a CONFIG_xxx option to disable it if your platform is having problems and you can't figure things out, and don't need the speed gains. -mike