diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index a9e153b3e1f96e96ce0b0ba4148d8797a52487dd..09e6ca5e332e97aac9e13a54e009ab2f2cd4678d 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -11,6 +11,8 @@
  * 7-bit I2C slave address 0x39 (TCS34721, TCS34723) or 0x29 (TCS34725,
  * TCS34727)
  *
+ * Datasheet: http://ams.com/eng/content/download/319364/1117183/file/TCS3472_Datasheet_EN_v2.pdf
+ *
  * TODO: interrupt support, thresholds, wait time
  */