|author||Sascha Hauer <firstname.lastname@example.org>||2017-06-06 08:07:28 +0200|
|committer||Sascha Hauer <email@example.com>||2017-06-06 08:07:28 +0200|
dts: update to v4.12-rc1
Signed-off-by: Sascha Hauer <firstname.lastname@example.org>
Diffstat (limited to 'dts/Bindings/iio/proximity')
1 files changed, 28 insertions, 0 deletions
diff --git a/dts/Bindings/iio/proximity/devantech-srf04.txt b/dts/Bindings/iio/proximity/devantech-srf04.txt
new file mode 100644
@@ -0,0 +1,28 @@
+* Devantech SRF04 ultrasonic range finder
+ Bit-banging driver using two GPIOs
+ - compatible: Should be "devantech,srf04"
+ - trig-gpios: Definition of the GPIO for the triggering (output)
+ This GPIO is set for about 10 us by the driver to tell the
+ device it should initiate the measurement cycle.
+ - echo-gpios: Definition of the GPIO for the echo (input)
+ This GPIO is set by the device as soon as an ultrasonic
+ burst is sent out and reset when the first echo is
+ Thus this GPIO is set while the ultrasonic waves are doing
+ one round trip.
+ It needs to be an GPIO which is able to deliver an
+ interrupt because the time between two interrupts is
+ measured in the driver.
+ See Documentation/devicetree/bindings/gpio/gpio.txt for
+ information on how to specify a consumer gpio.
+ compatible = "devantech,srf04";
+ trig-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
+ echo-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;