improve sensor HAL documentation
Change-Id: If443c1d2e48c697fa8774bd94af4e65866d1dedb
diff --git a/include/hardware/sensors.h b/include/hardware/sensors.h
index 30bff91..2bbc8c9 100644
--- a/include/hardware/sensors.h
+++ b/include/hardware/sensors.h
@@ -194,16 +194,16 @@
* the sensor should report its maxRange value in the "far" state and a value
* less than maxRange in the "near" state.
*
- * Proximity sensors report a value only when it changes. setDelay() is
- * ignored.
+ * Proximity sensors report a value only when it changes and each time the
+ * sensor is enabled. setDelay() is ignored.
*
* Light
* -----
*
* The light sensor value is returned in SI lux units.
*
- * Light sensors report a value only when it changes. setDelay() is
- * ignored.
+ * Light sensors report a value only when it changes and each time the
+ * sensor is enabled. setDelay() is ignored.
*
*/
typedef struct {
