diff --git a/sys/conf/options.mips b/sys/conf/options.mips
index 7c2648ab3d0f..7c80a6cd446c 100644
--- a/sys/conf/options.mips
+++ b/sys/conf/options.mips
@@ -118,6 +118,17 @@ AR71XX_ENV_REDBOOT		opt_ar71xx.h
 AR71XX_ENV_ROUTERBOOT		opt_ar71xx.h
 AR71XX_ATH_EEPROM		opt_ar71xx.h
 
+#
+# Options for AR531X SOC. AR531X_1ST_GENERATION is AR5311 to AR5314.
+#
+
+AR531X_1ST_GENERATION		opt_ar531x.h
+AR531X_REALMEM			opt_ar531x.h
+AR531X_ENV_UBOOT		opt_ar531x.h
+AR531X_APB_DEBUG		opt_ar531x.h
+ARE_MDIO			opt_ar531x.h
+ARE_MII				opt_ar531x.h
+
 #
 # Options that control the Ralink RT305xF Etherenet MAC.
 #