tree aaba81e368d15814f9541364a96fa65792ba211b
parent 7928b2cbe55b2a410a0f5c1f154610059c57b1b2
author Eugen Hristev <eugen.hristev@microchip.com> 1519727107 +0200
committer Mark Brown <broonie@kernel.org> 1519740045 +0000
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spi: atmel: init FIFOs before spi enable

The datasheet recommends initializing FIFOs before
SPI enable. If we do not do it like this, there may be
a strange behavior. We noticed that DMA does not work properly
with FIFOs if we do not clear them beforehand or enable them
before SPIEN.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org