Document support for AD7606 Analog to Digital Converter.
Signed-off-by: Stefan Popa <stefan.popa@xxxxxxxxxx>
---
.../devicetree/bindings/iio/adc/adi,ad7606.txt | 51 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 52 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
new file mode 100644
index 0000000..dede581
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
@@ -0,0 +1,51 @@
+Analog Devices AD7606 Simultaneous Sampling ADC
+
+Required properties for the AD7606:
+
+ - compatible: Must be one of "adi,ad7605-4", "adi,ad7606-8", "adi,ad7606-6" or
+ "adi,ad7606-4".
+ - reg: SPI chip select number for the device
+ - spi-max-frequency: Max SPI frequency to use
+ see: Documentation/devicetree/bindings/spi/spi-bus.txt
+ - spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt
+ - avcc-supply: phandle to the Avcc power supply
+ - interrupts: IRQ line for the ADC
+ see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+ - conversion-start-gpio: must be the device tree identifier of the CONVST pin.
+ This logic input is used to initiate conversions on
+ the analog input channels.
+
+Optional properties:
+
+ - reset-gpio: must be the device tree identifier of the RESET pin. If specified,
+ it will be asserted during driver probe.
+ - first-data-gpio: must be the device tree identifier of the FRSTDATA pin.
+ The FRSTDATA output indicates when the first channel, V1, is
+ being read back on either the parallel, byte or serial interface.
+- standby-gpio: must be the device tree identifier of the STBY pin. This pin is used
+ to place the AD7606 into one of two power-down modes, Standby mode or
+ Shutdown mode.
+- range-gpio: must be the device tree identifier of the RANGE pin. The polarity on
+ this pin determines the input range of the analog input channels. If
+ this pin is tied to a logic high, the analog input range is ±10V for
+ allchannels. If this pin is tied to a logic low, the analog input range
+ is ±5V for all channels.
+
+Example:
+
+ adc@0 {
+ compatible = "adi,ad7606-8";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+
+ avcc-supply = <&adc_vref>;
+
+ interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpio>;
+
+ conversion-start-gpio = <&gpio 17 0>;
+ reset-gpio = <&gpio 27 0>;
+ first-data-gpio = <&gpio 22 0>;
+ standby-gpio = <&gpio 24 0>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 843545d..6d63db4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -845,6 +845,7 @@ L: linux-iio@xxxxxxxxxxxxxxx
W: http://ez.analog.com/community/linux-device-drivers
S: Supported
F: drivers/iio/adc/ad7606.c
+F: Documentation/devicetree/bindings/iio/adc/ad7606.txt
ANALOG DEVICES INC AD9389B DRIVER
M: Hans Verkuil <hans.verkuil@xxxxxxxxx>
--
2.7.4
