iio: adc: at91_adc: correct default shtim value

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When sample_hold_time is zero (this is the case when DT is not used or if
atmel,adc-sample-hold-time is omitted), then the calculated shtim is large.

Make that 0, which is the default for that register and the ADC will then use a
sane value of 2/ADCCLK or 1/ADCCLK depending on the version.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Alexandre Belloni 2014-03-03 18:07:00 +00:00 • committed by Jonathan Cameron

parent 301841a634

commit 8f32b6ba56

1 changed files with 5 additions and 2 deletions

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drivers/iio/adc/at91_adc.c

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