diff --git a/device/MIMXRT1052_features.h b/device/MIMXRT1052_features.h
index 86c5c34..a337859 100644
--- a/device/MIMXRT1052_features.h
+++ b/device/MIMXRT1052_features.h
@@ -379,6 +379,8 @@
 
 /* IGPIO module features */
 
+/* For Rev A.0 Silicon, disable the following 3 options. */
+
 /* @brief Has data register set DR_SET. */
 #define FSL_FEATURE_IGPIO_HAS_DR_SET (0)
 /* @brief Has data register clear DR_CLEAR. */