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| author | Robin Gong <b38343@freescale.com> | 2014-09-11 09:18:44 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-09-17 11:36:11 -0700 |
| commit | f62caccd12c17e4cb516d43a6e4dd8a3abc1f7e0 (patch) | |
| tree | 491f4802a391e3bc04b80f2fbd6ddcd2d2bf7a94 /drivers/spi/spi-orion.c | |
| parent | 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff) | |
| download | linux-stable-f62caccd12c17e4cb516d43a6e4dd8a3abc1f7e0.tar.gz linux-stable-f62caccd12c17e4cb516d43a6e4dd8a3abc1f7e0.tar.bz2 linux-stable-f62caccd12c17e4cb516d43a6e4dd8a3abc1f7e0.zip | |
spi: spi-imx: add DMA support
Enable DMA support on i.mx6. The read speed can increase from 600KB/s
to 1.2MB/s on i.mx6q. You can disable or enable dma function in dts.
If not set "dma-names" in dts, spi will use PIO mode. This patch only
validate on i.mx6, not i.mx5, but encourage ones to apply this patch
on i.mx5 since they share the same IP.
Note:
Sometime, there is a weid data in rxfifo after one full tx/rx
transfer finish by DMA on i.mx6dl, so we disable dma functhion on
i.mx6dl.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Robin Gong <b38343@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-orion.c')
0 files changed, 0 insertions, 0 deletions