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| author | Rajeshwari Shinde <rajeshwari.s@samsung.com> | 2013-10-08 16:20:06 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-10-08 18:18:12 +0530 |
| commit | c4a796329d00ce46de6b5afeb1fdabec82830677 (patch) | |
| tree | 01b2274734a04752e2d0fc139de7f3a726721e4b /arch/arm/cpu/armv7/omap-common | |
| parent | 120af1572a3647bb87eff2f62dd8f8a919ee71f0 (diff) | |
spi: exynos: Support word transfers
Since SPI register access is so expensive, it is worth transferring data
a word at a time if we can. This complicates the driver unfortunately.
Use the byte-swapping feature to avoid having to convert to/from big
endian in software.
This change increases speed from about 2MB/s to about 4.5MB/s.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common')
0 files changed, 0 insertions, 0 deletions