[U-Boot] [PATCH] DaVinci: Improve DaVinci SPI speed.

[Ben Gardiner]

On Thu, May 13, 2010 at 8:57 AM, Delio Brignoli
<dbrignoli at audioscience.com> wrote:
> Reduce the number of reads per byte transferred on the BUF register from 2 to 1 and
> take advantage of the TX buffer in the SPI module. On LogicPD OMAP-L138 EVM,
> SPI read throughput goes up from ~0.8Mbyte/s to ~1.3Mbyte/s. Tested with a 2Mbyte image file.
>
> Signed-off-by: Delio Brignoli <dbrignoli at audioscience.com>

Applies cleanly on u-boot master branch -- 2f05e39 of
git://git.denx.de/u-boot.git

Applies cleanly and compiles with da850evm_config on u-boot-omap-l1
master branch -- 5f16b85 of 2f05e39 . Also running the resulting
u-boot.bin did show a noticeable improvement in kernel load time.

Tested-by: Ben Gardiner <bengardiner at nanometrics.ca>

-- 
Ben Gardiner
Nanometrics Inc.
+1 (613) 592-6776 x239
http://www.nanometrics.ca