diff --git a/target/linux/ath79/dts/qca9558_nec_wg1800hp.dts b/target/linux/ath79/dts/qca9558_nec_wg1800hp.dts
new file mode 100644
index 00000000000000..47679c5869951c
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_nec_wg1800hp.dts
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qca9558_nec_aterm.dtsi"
+
+/ {
+	compatible = "nec,wg1800hp", "qca,qca9558";
+	model = "NEC Aterm WG1800HP";
+};
+
+&eth0 {
+	pll-data = <0x5a000000 0x00000101 0x00001616>;
+};
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/02_network b/target/linux/ath79/generic/base-files/etc/board.d/02_network
index 8efae58ae69b75..759508d386ffa1 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/generic/base-files/etc/board.d/02_network
@@ -190,6 +190,7 @@ ath79_setup_interfaces()
 	belkin,f9j1108-v2|\
 	belkin,f9k1115-v2|\
 	nec,wg1400hp|\
+	nec,wg1800hp|\
 	tplink,archer-c5-v1|\
 	tplink,archer-c7-v1|\
 	tplink,archer-c7-v2|\
diff --git a/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh b/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
index e286314b9e1cab..d17e03c7480b7a 100644
--- a/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
@@ -17,7 +17,8 @@ platform_check_image() {
 	ubnt,routerstation-pro)
 		platform_check_image_redboot_fis "$1"
 		;;
-	nec,wg1400hp)
+	nec,wg1400hp|\
+	nec,wg1800hp)
 		local uboot_mtd=$(find_mtd_part "bootloader")
 
 		# check "U-Boot <year>.<month>" string in the "bootloader" partition
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 2cbf50e5e2190e..94c248541d8726 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -2071,6 +2071,16 @@ define Device/nec_wg1400hp
 endef
 TARGET_DEVICES += nec_wg1400hp
 
+define Device/nec_wg1800hp
+  SOC := qca9558
+  DEVICE_MODEL := Aterm WG1800HP
+  IMAGE_SIZE := 16128k
+  NEC_FW_TYPE := H040a
+  $(Device/nec-netbsd-aterm)
+  DEVICE_PACKAGES += kmod-ath10k-ct ath10k-firmware-qca988x-ct
+endef
+TARGET_DEVICES += nec_wg1800hp
+
 define Device/nec_wg800hp
   SOC := qca9563
   DEVICE_VENDOR := NEC
diff --git a/target/linux/ath79/image/lzma-loader/src/board.c b/target/linux/ath79/image/lzma-loader/src/board.c
index f71de513e3dda5..f9a5282b3adc9f 100644
--- a/target/linux/ath79/image/lzma-loader/src/board.c
+++ b/target/linux/ath79/image/lzma-loader/src/board.c
@@ -52,7 +52,8 @@ static inline void tlwr1043nd_init(void) {}
 #endif
 
 #if defined(CONFIG_BOARD_MERAKI_MR18) || \
-    defined(CONFIG_BOARD_NEC_WG1400HP)
+    defined(CONFIG_BOARD_NEC_WG1400HP) || \
+    defined(CONFIG_BOARD_NEC_WG1800HP)
 
 static int extract_qca955x_sgmii_res_cal(void)
 {
@@ -217,6 +218,7 @@ static inline void huawei_ap_init(void) {}
 #endif
 
 #if defined(CONFIG_BOARD_NEC_WG1400HP) || \
+    defined(CONFIG_BOARD_NEC_WG1800HP) || \
     defined(CONFIG_BOARD_NEC_WG600HP) || \
     defined(CONFIG_BOARD_NEC_WR8750N) || \
     defined(CONFIG_BOARD_NEC_WR9500N)
@@ -290,7 +292,8 @@ static inline void nec_aterm_init(void)
 		 AR934X_RESET_RTC);
 	WRITEREG(reg + AR934X_RESET_REG_RESET_MODULE, val);
 }
-#elif defined(CONFIG_BOARD_NEC_WG1400HP)
+#elif defined(CONFIG_BOARD_NEC_WG1400HP) || \
+      defined(CONFIG_BOARD_NEC_WG1800HP)
 
 #define QCA955X_GMAC_MR_AN_CONTROL_PHY_RESET_MASK	BIT(15)
 #define QCA955X_GMAC_MR_AN_CONTROL_FULL_DUPLEX_MASK	BIT(8)