diff --git a/target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-time-for-WL520G-and-other-200-MHz-C.patch b/target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-clock-detection-for-BCM5354-with-20.patch
similarity index 82%
rename from target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-time-for-WL520G-and-other-200-MHz-C.patch
rename to target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-clock-detection-for-BCM5354-with-20.patch
index ff670e87a9..346e33530b 100644
--- a/target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-time-for-WL520G-and-other-200-MHz-C.patch
+++ b/target/linux/brcm47xx/patches-3.10/520-MIPS-BCM47XX-fix-clock-detection-for-BCM5354-with-20.patch
@@ -15,7 +15,7 @@
  
  	/*
  	 * Use deterministic values for initial counter interrupt
-@@ -43,15 +47,26 @@ void __init plat_time_init(void)
+@@ -43,15 +47,23 @@ void __init plat_time_init(void)
  #ifdef CONFIG_BCM47XX_SSB
  	case BCM47XX_BUS_TYPE_SSB:
  		hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2;
@@ -34,11 +34,8 @@
 +		len = bcm47xx_nvram_getenv("clkfreq", buf, sizeof(buf));
 +		if (len >= 0 && !strncmp(buf, "200", 4))
 +			hz = 100000000;
-+		len = bcm47xx_nvram_getenv("hardware_version", buf, sizeof(buf));
-+		if (len >= 0 && !strncmp(buf, "WL520G", 6))
-+			hz = 100000000;
-+
 +	}
++
  	if (!hz)
  		hz = 100000000;
  
diff --git a/target/linux/brcm47xx/patches-3.10/521-MIPS-BCM47XX-fix-detected-clock-on-Asus-WL520GC-and-.patch b/target/linux/brcm47xx/patches-3.10/521-MIPS-BCM47XX-fix-detected-clock-on-Asus-WL520GC-and-.patch
new file mode 100644
index 0000000000..c4eb83593e
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.10/521-MIPS-BCM47XX-fix-detected-clock-on-Asus-WL520GC-and-.patch
@@ -0,0 +1,34 @@
+--- a/arch/mips/bcm47xx/time.c
++++ b/arch/mips/bcm47xx/time.c
+@@ -28,6 +28,7 @@
+ #include <asm/time.h>
+ #include <bcm47xx.h>
+ #include <bcm47xx_nvram.h>
++#include <bcm47xx_board.h>
+ 
+ void __init plat_time_init(void)
+ {
+@@ -35,6 +36,7 @@ void __init plat_time_init(void)
+ 	u16 chip_id = 0;
+ 	char buf[10];
+ 	int len;
++	enum bcm47xx_board board = bcm47xx_board_get();
+ 
+ 	/*
+ 	 * Use deterministic values for initial counter interrupt
+@@ -64,6 +66,15 @@ void __init plat_time_init(void)
+ 			hz = 100000000;
+ 	}
+ 
++	switch (board) {
++	case BCM47XX_BOARD_ASUS_WL520GC:
++	case BCM47XX_BOARD_ASUS_WL520GU:
++		hz = 100000000;
++		break;
++	default:
++		break;
++	}
++
+ 	if (!hz)
+ 		hz = 100000000;
+