diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 6d2d429a48e01c61ca228298c1f5aea3c71901c6..06f4792240f025ac56b9cc42946cc4834f0ad480 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -662,10 +662,8 @@ EXPORT_SYMBOL_GPL(twl4030_get_madc_conversion);
  *
  * @madc:	pointer to twl4030_madc_data struct
  * @chan:	can be one of the two values:
- *		TWL4030_BCI_ITHEN
- *		Enables bias current for main battery type reading
- *		TWL4030_BCI_TYPEN
- *		Enables bias current for main battery temperature sensing
+ *		0 - Enables bias current for main battery type reading
+ *		1 - Enables bias current for main battery temperature sensing
  * @on:		enable or disable chan.
  *
  * Function to enable or disable bias current for