dt-bindings: iio: document envelope-detector bindings (e778aa14) · Commits · 戴 / test

Documentation/devicetree/bindings/iio/adc/envelope-detector.txt

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		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 = <&reg_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";
		};

+6 −0

Original line number	Diff line number	Diff line
		@@ -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>