Adding dt-bindings documentation for AD5770R DAC. The bindings follow the standard SPI and fixed regulator bindings.
Signed-off-by: Mircea Caprioru <[email protected]> --- .../devicetree/bindings/iio/dac/ad5770r.txt | 86 +++++++++++++++++++ MAINTAINERS | 7 ++ 2 files changed, 93 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/ad5770r.txt diff --git a/Documentation/devicetree/bindings/iio/dac/ad5770r.txt b/Documentation/devicetree/bindings/iio/dac/ad5770r.txt new file mode 100644 index 000000000000..bdd6ee4d5f2f --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/ad5770r.txt @@ -0,0 +1,86 @@ +Analog Devices AD5770R DAC device driver + +Required properties for the AD5770R: + - compatible: Must be "adi,ad5770r" + - reg: SPI chip select number for the device + - spi-max-frequency: Max SPI frequency to use (< 10000000, as per + Documentation/devicetree/bindings/spi/spi-bus.txt) + - child nodes: Each child node represents one channel and has + the following required properties: + * num: This represents the channel num + * adi,range-microamp: Output range of the channel + The following ranges are supported: + * Channel 0: + * <0 300000> 0 mA to 300 mA + * <(-60000) 0> -60 to 0 mA + * <(-60000) 300000> -60 to 300 mA + * Channel 1: + * <0 140000> 0 to 140 mA + * <0 250000> 0 to 250 mA + * Channel 2: + * <0 55000> 0 to 55 mA + * <0 150000> 0 to 150 mA + * Channel 3 to Channel 5: + * <0 45000> 0 to 45 mA + * <0 100000> 0 to 100 mA + +Optional properties: + +- vref: Specify the voltage of the external reference used. + Available reference options are: 1.25 V or 2.5 V. If no + external reference declared then the device will use the + internal reference of 1.25 V. + +- reset-gpios: GPIO spec for the RESET pin. If specified, it will be + asserted during driver probe. + +AD5770R Example: + + ad5770r@0 { + compatible = "ad5770r"; + reg = <0>; + spi-max-frequency = <1000000>; + vref-supply = <&vref>; + + reset-gpios = <&gpio 22 0>; + + channel@0 { + num = <0>; + adi,range-microamp = <0 300000>; + }; + + channel@1 { + num = <1>; + adi,range-microamp = <0 140000>; + }; + + channel@2 { + num = <2>; + adi,range-microamp = <0 55000>; + }; + + channel@3 { + num = <3>; + adi,range-microamp = <0 45000>; + }; + + channel@4 { + num = <4>; + adi,range-microamp = <0 45000>; + }; + + channel@5 { + num = <5>; + adi,range-microamp = <0 45000>; + }; + }; + +External reference example: + + vref: fixedregulator@0 { + compatible = "regulator-fixed"; + regulator-name = "fixed-supply"; + regulator-min-microvolt = <1250000>; + regulator-max-microvolt = <1250000>; + }; + diff --git a/MAINTAINERS b/MAINTAINERS index 6f7721d1634c..9c2626079592 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -756,6 +756,13 @@ M: Michael Hanselmann <[email protected]> S: Supported F: drivers/macintosh/ams/ +ANALOG DEVICES INC AD5770R DRIVER +M: Mircea Caprioru <[email protected]> +L: [email protected] +W: http://ez.analog.com/community/linux-device-drivers +S: Supported +F: Documentation/devicetree/bindings/iio/dac/ad5770r.txt + ANALOG DEVICES INC AD9389B DRIVER M: Hans Verkuil <[email protected]> L: [email protected] -- 2.17.1
