spi: rockchip: adjust dma watermark and burstlen

Browse source

Signal tx dma when spi fifo is less than half full,
and limit tx bursts to half the fifo length.

Clamp rx burst length to 1 to avoid alignment issues.

Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Huibin Hong 2018-10-10 11:00:33 +02:00 • committed by Mark Brown

parent 04000dc6f7

commit dcfc861d24

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 3 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

12

drivers/spi/spi-rockchip.c

View file