iio: proximity: as3935: noise detection + threshold changes

[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / iio / proximity / as3935.txt

diff --git a/Documentation/devicetree/bindings/iio/proximity/as3935.txt b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
index 38d7431..b6c1afa 100644 (file)
--- a/Documentation/devicetree/bindings/iio/proximity/as3935.txt
+++ b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
@@ -16,6 +16,10 @@ Optional properties:
        - ams,tuning-capacitor-pf: Calibration tuning capacitor stepping
          value 0 - 120pF. This will require using the calibration data from
          the manufacturer.
+       - ams,nflwdth: Set the noise and watchdog threshold register on
+         startup. This will need to set according to the noise from the
+         MCU board, and possibly the local environment. Refer to the
+         datasheet for the threshold settings.
 
 Example:
 
@@ -27,4 +31,5 @@ as3935@0 {
        interrupt-parent = <&gpio1>;
        interrupts = <16 1>;
        ams,tuning-capacitor-pf = <80>;
+       ams,nflwdth = <0x44>;
 };