--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -254,6 +254,16 @@ config ATH79_MACH_WPE72
 	select ATH79_DEV_USB
 	select MYLOADER
 
+config ATH79_MACH_DIR_505_A1
+	bool "D-Link DIR-505-A1 support"
+	select SOC_AR933X
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_WMAC
+	select ATH79_NVRAM
+
 config ATH79_MACH_DIR_600_A1
 	bool "D-Link DIR-600 A1/DIR-615 E4 support"
 	select SOC_AR724X
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_ATH79_MACH_ARCHER_C7)	+= ma
 obj-$(CONFIG_ATH79_MACH_AW_NR580)	+= mach-aw-nr580.o
 obj-$(CONFIG_ATH79_MACH_CAP4200AG)	+= mach-cap4200ag.o
 obj-$(CONFIG_ATH79_MACH_DB120)		+= mach-db120.o
+obj-$(CONFIG_ATH79_MACH_DIR_505_A1)	+= mach-dir-505-a1.o
 obj-$(CONFIG_ATH79_MACH_DIR_600_A1)	+= mach-dir-600-a1.o
 obj-$(CONFIG_ATH79_MACH_DIR_615_C1)	+= mach-dir-615-c1.o
 obj-$(CONFIG_ATH79_MACH_DIR_825_B1)	+= mach-dir-825-b1.o
--- a/arch/mips/ath79/machtypes.h
+++ b/arch/mips/ath79/machtypes.h
@@ -37,6 +37,7 @@ enum ath79_mach_type {
 	ATH79_MACH_CARAMBOLA2,		/* 8devices Carambola2 */
 	ATH79_MACH_DB120,		/* Atheros DB120 reference board */
 	ATH79_MACH_PB44,		/* Atheros PB44 reference board */
+	ATH79_MACH_DIR_505_A1,		/* D-Link DIR-505 rev. A1 */
 	ATH79_MACH_DIR_600_A1,		/* D-Link DIR-600 rev. A1 */
 	ATH79_MACH_DIR_615_C1,		/* D-Link DIR-615 rev. C1 */
 	ATH79_MACH_DIR_615_E4,		/* D-Link DIR-615 rev. E4 */