| commit | 44a5f423e70374e5b42cecd85e78f2d79334e0f2 | [log] [tgz] |
|---|---|---|
| author | Maxime Chevallier <maxime.chevallier@smile.fr> | Wed Jan 17 17:15:25 2018 +0100 |
| committer | Mark Brown <broonie@kernel.org> | Thu Jan 18 10:59:12 2018 +0000 |
| tree | ac17c518f5357f051350af2833675af9cb913182 | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 [diff] |
spi: a3700: Clear DATA_OUT when performing a read When performing a read using FIFO mode, the spi controller shifts out the last 2 bytes that were written in a previous transfer on MOSI. This undocumented behaviour can cause devices to misinterpret the transfer, so we explicitly clear the WFIFO before each read. This behaviour was noticed on EspressoBin. Signed-off-by: Maxime Chevallier <maxime.chevallier@smile.fr> Signed-off-by: Mark Brown <broonie@kernel.org>