diff --git a/meta-facebook/meta-harma/recipes-kernel/linux/linux-aspeed/harma.cfg b/meta-facebook/meta-harma/recipes-kernel/linux/linux-aspeed/harma.cfg
index d5094e8..4c83fe4 100644
--- a/meta-facebook/meta-harma/recipes-kernel/linux/linux-aspeed/harma.cfg
+++ b/meta-facebook/meta-harma/recipes-kernel/linux/linux-aspeed/harma.cfg
@@ -89,3 +89,6 @@
 CONFIG_I2C_SLAVE_MQUEUE=m
 CONFIG_I2C_SLAVE_MQUEUE_QUEUE_SIZE=32
 CONFIG_I2C_SLAVE_MQUEUE_MESSAGE_SIZE=256
+
+# RTC sensor
+CONFIG_RTC_DRV_PCF8563=y