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(parent: 38dbfb5) | patch
spi: Fix handling of cs_change in core implementation
authorMark Brown <broonie@linaro.org>
Sat, 29 Mar 2014 23:48:07 +0000 (23:48 +0000)
committerMark Brown <broonie@linaro.org>
Sun, 30 Mar 2014 00:48:12 +0000 (00:48 +0000)
commit0b73aa63c193006c3d503d4903dd4792a26e1d50
treeaf2028d5db595790560568aa155973090cfca3bdtree | snapshot (tar.gz zip)
parent38dbfb59d1175ef458d006556061adeaa8751b72commit | diff
spi: Fix handling of cs_change in core implementation

The core implementation of cs_change didn't follow the documentation
which says that cs_change in the middle of the transfer means to briefly
deassert chip select, instead it followed buggy drivers which change the
polarity of chip select.  Use a delay of 10us between deassert and
reassert simply from pulling numbers out of a hat.

Reported-by: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
drivers/spi/spi.c diff | blob | blame | history