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| author | Franklin S Cooper Jr <fcooper@ti.com> | 2016-06-27 09:54:08 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-07-05 16:48:25 +0200 |
| commit | 4bd00413cde851d84b297c1b0dae15109025e84b (patch) | |
| tree | 9b4b411dd05c7dfa70dad52b2fb8147fca891e5a /drivers/spi/Kconfig | |
| parent | 1a695a905c18548062509178b98bc91e67510864 (diff) | |
| download | lwn-4bd00413cde851d84b297c1b0dae15109025e84b.tar.gz lwn-4bd00413cde851d84b297c1b0dae15109025e84b.zip | |
spi: omap2-mcspi: Add comments for RX only DMA buffer workaround
OMAP35x and OMAP37x mentions in the McSPI End-of-Transfer Sequences section
that if the McSPI is configured as a Master and only DMA RX is being
performed then the DMA transfer size needs to be reduced by 1 or 2.
This was originally implemented by:
commit 57c5c28dbc83 ("spi: omap2_mcspi rxdma bugfix")
This patch adds comments to clarify what is going on in the code since its
not obvious what problem its addressing.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Kconfig')
0 files changed, 0 insertions, 0 deletions