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Commit f29b212e authored by Naidu Tellapati's avatar Naidu Tellapati Committed by Jonathan Cameron
Browse files

iio: adc: cc10001: Add delay before setting START bit 



According to hardware team there should be some delay after
setting channel number, start mode and before setting START.
Add a one microsecond delay for this purpose.

Fixes: 1664f6a5 ("iio: adc: Cosmic Circuits 10001 ADC driver")
Signed-off-by: default avatarNaidu Tellapati <naidu.tellapati@imgtec.com>
Signed-off-by: default avatarEzequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 65a761bf

drivers/iio/adc/cc10001_adc.c

+1 −0
Original line number Diff line number Diff line
@@ -100,6 +100,7 @@ static void cc10001_adc_start(struct cc10001_adc_device *adc_dev, 
	val = (channel & CC10001_ADC_CH_MASK) | CC10001_ADC_MODE_SINGLE_CONV;

	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);



	udelay(1);

	val = cc10001_adc_read_reg(adc_dev, CC10001_ADC_CONFIG);

	val = val | CC10001_ADC_START_CONV;

	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);