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iio: at91_adc: fix missing Sample and Hold time
authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Fri, 29 Mar 2013 14:54:00 +0000 (14:54 +0000)
committerJonathan Cameron <jic23@kernel.org>
Tue, 2 Apr 2013 18:22:16 +0000 (19:22 +0100)
On the at91_adc a minimal Sample and Hold Time is necessary for the ADC to
guarantee the best converted final value between two channels selection.
This time has to be programmed through the bitfield SHTIM in the
Mode Register ADC_MR.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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