diff options
| author | Peter Rosin <peda@axentia.se> | 2016-11-08 12:58:57 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-11-13 13:07:16 +0000 |
| commit | e778aa142ab0666fa8af789a3bbabfb3334e6ff5 (patch) | |
| tree | 0acf0c12223fff3d4f207933336a2b27274def84 | |
| parent | 7fde1484af21f9668e9575bd8a119ebc4fe6fe42 (diff) | |
dt-bindings: iio: document envelope-detector bindings
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/envelope-detector.txt | 54 | ||||
| -rw-r--r-- | MAINTAINERS | 6 |
2 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/envelope-detector.txt b/Documentation/devicetree/bindings/iio/adc/envelope-detector.txt new file mode 100644 index 000000000000..27544bdd4478 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/envelope-detector.txt @@ -0,0 +1,54 @@ +Bindings for ADC envelope detector using a DAC and a comparator + +The DAC is used to find the peak level of an alternating voltage input +signal by a binary search using the output of a comparator wired to +an interrupt pin. Like so: + _ + | \ + input +------>-------|+ \ + | \ + .-------. | }---. + | | | / | + | dac|-->--|- / | + | | |_/ | + | | | + | | | + | irq|------<-------' + | | + '-------' + +Required properties: +- compatible: Should be "axentia,tse850-envelope-detector" +- io-channels: Channel node of the dac to be used for comparator input. +- io-channel-names: Should be "dac". +- interrupt specification for one client interrupt, + see ../../interrupt-controller/interrupts.txt for details. +- interrupt-names: Should be "comp". + +Example: + + &i2c { + dpot: mcp4651-104@28 { + compatible = "microchip,mcp4651-104"; + reg = <0x28>; + #io-channel-cells = <1>; + }; + }; + + dac: dac { + compatible = "dpot-dac"; + vref-supply = <®_3v3>; + io-channels = <&dpot 0>; + io-channel-names = "dpot"; + #io-channel-cells = <1>; + }; + + envelope-detector { + compatible = "axentia,tse850-envelope-detector"; + io-channels = <&dac 0>; + io-channel-names = "dac"; + + interrupt-parent = <&gpio>; + interrupts = <3 IRQ_TYPE_EDGE_FALLING>; + interrupt-names = "comp"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index e63719d53658..76c3124fd62f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6127,6 +6127,12 @@ F: Documentation/ABI/testing/sysfs-bus-iio-dac-dpot-dac F: Documentation/devicetree/bindings/iio/dac/dpot-dac.txt F: drivers/iio/dac/dpot-dac.c +IIO ENVELOPE DETECTOR +M: Peter Rosin <peda@axentia.se> +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/adc/envelope-detector.txt + IIO SUBSYSTEM AND DRIVERS M: Jonathan Cameron <jic23@kernel.org> R: Hartmut Knaack <knaack.h@gmx.de> |