diff --git a/board/integratorap/integratorap.c b/board/integratorap/integratorap.c
index d4f61d6..4baf39a 100644
--- a/board/integratorap/integratorap.c
+++ b/board/integratorap/integratorap.c
@@ -649,3 +649,8 @@
 {
 	return CFG_HZ_CLOCK/div_clock;
 }
+
+/* The Integrator/AP timer1 is clocked at 24MHz
+ * can be divided by 16 or 256
+ * and is a 16-bit counter
+ */