Index: head/sys/arm/allwinner/clkng/aw_clk.h
===================================================================
--- head/sys/arm/allwinner/clkng/aw_clk.h
+++ head/sys/arm/allwinner/clkng/aw_clk.h
@@ -72,6 +72,7 @@
 #define	AW_CLK_FACTOR_ZERO_BASED	0x0002
 #define	AW_CLK_FACTOR_HAS_COND		0x0004
 #define	AW_CLK_FACTOR_FIXED		0x0008
+#define	AW_CLK_FACTOR_ZERO_IS_ONE	0x0010
 
 struct aw_clk_factor {
 	uint32_t	shift;		/* Shift bits for the factor */
@@ -110,6 +111,8 @@
 		return (factor->value);
 
 	factor_val = (val & factor->mask) >> factor->shift;
+	if (factor_val == 0 && (factor->flags & AW_CLK_FACTOR_ZERO_IS_ONE))
+		factor_val = 1;
 
 	if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO)
 		factor_val = 1 << factor_val;