spi: rspi: Fix loopback mode for Dual/Quad SPI Transfers

Browse source

While normal Dual and Quad SPI Transfers are unidirectional, we must do
a bidirectional transfer if loopback mode is enabled, else rx_buf is not
filled.

With spidev it seemed to work, as spidev uses the same buffer for
tranmission and reception.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

...

This commit is contained in:

Geert Uytterhoeven 2014-02-21 17:29:18 +01:00 • committed by Mark Brown

parent ab98fcba96

commit ba824d4971

1 changed files with 3 additions and 1 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

4

drivers/spi/spi-rspi.c

View file