diff --git a/sys/arm/ti/am335x/am335x_ehrpwm.c b/sys/arm/ti/am335x/am335x_ehrpwm.c
--- a/sys/arm/ti/am335x/am335x_ehrpwm.c
+++ b/sys/arm/ti/am335x/am335x_ehrpwm.c
@@ -83,9 +83,9 @@
 #define		TBCTL_PHDIR_UP		(1 << 13)
 #define		TBCTL_PHDIR_DOWN	(0 << 13)
 #define		TBCTL_CLKDIV(x)		((x) << 10)
-#define		TBCTL_CLKDIV_MASK	(3 << 10)
+#define		TBCTL_CLKDIV_MASK	(7 << 10)
 #define		TBCTL_HSPCLKDIV(x)	((x) << 7)
-#define		TBCTL_HSPCLKDIV_MASK	(3 << 7)
+#define		TBCTL_HSPCLKDIV_MASK	(7 << 7)
 #define		TBCTL_SYNCOSEL_DISABLED	(3 << 4)
 #define		TBCTL_PRDLD_SHADOW	(0 << 3)
 #define		TBCTL_PRDLD_IMMEDIATE	(1 << 3)