diff --git a/configs/mt7620_rfb_defconfig b/configs/mt7620_rfb_defconfig
index 2aa6eb7..d96da91d 100644
--- a/configs/mt7620_rfb_defconfig
+++ b/configs/mt7620_rfb_defconfig
@@ -15,6 +15,7 @@
 CONFIG_DEBUG_UART_CLOCK=40000000
 CONFIG_SYS_LOAD_ADDR=0x80010000
 CONFIG_ARCH_MTMIPS=y
+CONFIG_SYS_MIPS_TIMER_FREQ=290000000
 CONFIG_MIPS_CACHE_SETUP=y
 CONFIG_MIPS_CACHE_DISABLE=y
 CONFIG_RESTORE_EXCEPTION_VECTOR_BASE=y