+--- a/arch/mips/ath79/clock.c
++++ b/arch/mips/ath79/clock.c
+@@ -25,7 +25,7 @@
+ #include "common.h"
+
+ #define AR71XX_BASE_FREQ 40000000
+-#define AR724X_BASE_FREQ 5000000
++#define AR724X_BASE_FREQ 40000000
+ #define AR913X_BASE_FREQ 5000000
+
+ struct clk {
+@@ -99,8 +99,8 @@
+ div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK);
+ freq = div * ref_rate;
+
+- div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK);
+- freq *= div;
++ div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK) * 2;
++ freq /= div;
+
+ cpu_rate = freq;
+