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dt-bindings: iio: accel: Document ADXL345 accelerometer binding

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Add the device tree binding documentation for the ADXL345 3-axis digital
accelerometer.

Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Eva Rachel Retuya 2017-03-04 16:31:23 +08:00 committed by Jonathan Cameron
parent aa04a7078b
commit a70b93bcb3
1 changed files with 38 additions and 0 deletions
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Documentation/devicetree/bindings/iio/accel/adxl345.txt Normal file
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Analog Devices ADXL345 3-Axis, +/-(2g/4g/8g/16g) Digital Accelerometer
http://www.analog.com/en/products/mems/accelerometers/adxl345.html
Required properties:
- compatible : should be "adi,adxl345"
- reg : the I2C address or SPI chip select number of the sensor
Required properties for SPI bus usage:
- spi-max-frequency : set maximum clock frequency, must be 5000000
- spi-cpol and spi-cpha : must be defined for adxl345 to enable SPI mode 3
Optional properties:
- interrupt-parent : phandle to the parent interrupt controller as documented
in Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
- interrupts: interrupt mapping for IRQ as documented in
Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
Example for a I2C device node:
accelerometer@2a {
compatible = "adi,adxl345";
reg = <0x53>;
interrupt-parent = <&gpio1>;
interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
};
Example for a SPI device node:
accelerometer@0 {
compatible = "adi,adxl345";
reg = <0>;
spi-max-frequency = <5000000>;
spi-cpol;
spi-cpha;
interrupt-parent = <&gpio1>;
interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
};