diff --git a/meta-facebook/meta-yosemite4/recipes-kernel/linux/linux-aspeed/yosemite4.cfg b/meta-facebook/meta-yosemite4/recipes-kernel/linux/linux-aspeed/yosemite4.cfg
index 5459bab..b04b0ff 100644
--- a/meta-facebook/meta-yosemite4/recipes-kernel/linux/linux-aspeed/yosemite4.cfg
+++ b/meta-facebook/meta-yosemite4/recipes-kernel/linux/linux-aspeed/yosemite4.cfg
@@ -43,3 +43,6 @@
 CONFIG_RTC_DRV_NCT3018Y=y
 # NCSI
 CONFIG_NCSI_OEM_CMD_GET_MAC=y
+# UART enable threads
+CONFIG_SERIAL_8250_NR_UARTS=9
+CONFIG_SERIAL_8250_RUNTIME_UARTS=9