diff --git a/configs/mt7622_rfb_defconfig b/configs/mt7622_rfb_defconfig
index 12f5291..c12ce5c 100644
--- a/configs/mt7622_rfb_defconfig
+++ b/configs/mt7622_rfb_defconfig
@@ -4,7 +4,10 @@
 CONFIG_SYS_TEXT_BASE=0x41e00000
 CONFIG_SYS_MALLOC_F_LEN=0x4000
 CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEBUG_UART_BASE=0x11002000
+CONFIG_DEBUG_UART_CLOCK=25000000
 CONFIG_DEFAULT_DEVICE_TREE="mt7622-rfb"
+CONFIG_DEBUG_UART=y
 CONFIG_FIT=y
 CONFIG_DEFAULT_FDT_FILE="mt7622-rfb"
 CONFIG_LOGLEVEL=7