diff --git a/include/dt-bindings/pinctrl/am43xx.h b/include/dt-bindings/pinctrl/am43xx.h
index eb6c366adfbaa26662a6031a8dd33e98bbb21320..9c2e4f82381e8abc7b21ac59447fefb84d5a1ea3 100644
--- a/include/dt-bindings/pinctrl/am43xx.h
+++ b/include/dt-bindings/pinctrl/am43xx.h
@@ -13,6 +13,7 @@
 #define MUX_MODE5	5
 #define MUX_MODE6	6
 #define MUX_MODE7	7
+#define MUX_MODE8	8
 
 #define PULL_DISABLE		(1 << 16)
 #define PULL_UP			(1 << 17)