[PATCH v3 1/4] Documentation: dt-bindings: Document ADXL345 accelerometer binding

From: Eva Rachel Retuya
Date: Wed Feb 22 2017 - 05:24:34 EST


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

Signed-off-by: Eva Rachel Retuya <eraretuya@xxxxxxxxx>
---
Change from v2:
* Add OF match table on both I2C and SPI files and document them

.../devicetree/bindings/iio/accel/adxl345.txt | 38 ++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/accel/adxl345.txt

diff --git a/Documentation/devicetree/bindings/iio/accel/adxl345.txt b/Documentation/devicetree/bindings/iio/accel/adxl345.txt
new file mode 100644
index 0000000..e623f4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/accel/adxl345.txt
@@ -0,0 +1,38 @@
+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:
+
+ adxl345@2a {
+ compatible = "adi,adxl345";
+ reg = <0x53>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+Example for a SPI device node:
+
+ adxl345@0 {
+ compatible = "adi,adxl345";
+ reg = <0>;
+ spi-max-frequency = <5000000>;
+ spi-cpol;
+ spi-cpha;
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ };
--
2.7.4