diff options
| author | Delio Brignoli <[email protected]> | 2010-06-07 17:16:13 -0400 |
|---|---|---|
| committer | Sandeep Paulraj <[email protected]> | 2010-06-07 17:21:25 -0400 |
| commit | 23911740486c59851df57521c49bfd81ce1865ec (patch) | |
| tree | 90a5c2bb2bc2704d057272a63e253fd1f38b4220 /include/linux | |
| parent | 05ee415e316e3b1617aba06a747649f4d4053d41 (diff) | |
DaVinci: Improve DaVinci SPI speed.
I have updated this patch based on the comments [1] by Wolfgang Denk and
removed unused variables.
[1][http://lists.denx.de/pipermail/u-boot/2010-May/071728.html]
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.
Remove unused variables in the spi_xfer() function.
Signed-off-by: Delio Brignoli <[email protected]>
Tested-by: Ben Gardiner <[email protected]>
Signed-off-by: Sandeep Paulraj <[email protected]>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions