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iio: Add binding documentation for imx25 GCQ

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The documentation describes the bindings for the imx25 GCQ unit which is
essentially a generic conversion queue using the imx25 ADC.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Markus Pargmann
2015-12-14 14:53:48 +01:00
committed by Lee Jones
parent 43de29baa9
commit 337600fbee
2 changed files with 76 additions and 0 deletions
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18
include/dt-bindings/iio/adc/fsl-imx25-gcq.h Normal file
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/*
* This header provides constants for configuring the I.MX25 ADC
*/
#ifndef _DT_BINDINGS_IIO_ADC_FS_IMX25_GCQ_H
#define _DT_BINDINGS_IIO_ADC_FS_IMX25_GCQ_H
#define MX25_ADC_REFP_YP 0 /* YP voltage reference */
#define MX25_ADC_REFP_XP 1 /* XP voltage reference */
#define MX25_ADC_REFP_EXT 2 /* External voltage reference */
#define MX25_ADC_REFP_INT 3 /* Internal voltage reference */
#define MX25_ADC_REFN_XN 0 /* XN ground reference */
#define MX25_ADC_REFN_YN 1 /* YN ground reference */
#define MX25_ADC_REFN_NGND 2 /* Internal ground reference */
#define MX25_ADC_REFN_NGND2 3 /* External ground reference */
#endif