diff --git a/target/linux/mediatek/image/mt7988.mk b/target/linux/mediatek/image/mt7988.mk
index a02d00e..e1a7275 100644
--- a/target/linux/mediatek/image/mt7988.mk
+++ b/target/linux/mediatek/image/mt7988.mk
@@ -145,6 +145,24 @@
 endef
 TARGET_DEVICES += mediatek_mt7988a-dsa-10g-spim-nand
 
+
+define Device/mediatek_mt7988a-dsa-10g-spim-nand-CASAN
+  DEVICE_VENDOR := MediaTek
+  DEVICE_MODEL := mt7988a-dsa-10g-spim-nand-CASAN
+  DEVICE_DTS := mt7988a-dsa-10g-spim-nand-CASAN
+  DEVICE_DTS_DIR := $(DTS_DIR)/mediatek
+  SUPPORTED_DEVICES := mediatek,mt7988a-dsa-10g-spim-snand-CASAN
+  UBINIZE_OPTS := -E 5
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  IMAGE_SIZE := 65536k
+  KERNEL_IN_UBI := 1
+  IMAGES += factory.bin
+  IMAGE/factory.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += mediatek_mt7988a-dsa-10g-spim-nand-CASAN
+
 define Device/mediatek_mt7988a-88d-10g-spim-nand
   DEVICE_VENDOR := MediaTek
   DEVICE_MODEL := mt7988a-88d-10g-spim-nand
@@ -316,6 +334,23 @@
 endef
 TARGET_DEVICES += mediatek_mt7988d-dsa-10g-spim-nand
 
+define Device/mediatek_mt7988d-dsa-10g-spim-nand-CASAN
+  DEVICE_VENDOR := MediaTek
+  DEVICE_MODEL := mt7988d-dsa-10g-spim-nand-CASAN
+  DEVICE_DTS := mt7988d-dsa-10g-spim-nand-CASAN
+  DEVICE_DTS_DIR := $(DTS_DIR)/mediatek
+  SUPPORTED_DEVICES := mediatek,mt7988d-dsa-10g-spim-snand-CASAN
+  UBINIZE_OPTS := -E 5
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  IMAGE_SIZE := 65536k
+  KERNEL_IN_UBI := 1
+  IMAGES += factory.bin
+  IMAGE/factory.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += mediatek_mt7988d-dsa-10g-spim-nand-CASAN
+
 define Device/mediatek_mt7988d-dsa-e2p5g-spim-nand
   DEVICE_VENDOR := MediaTek
   DEVICE_MODEL := mt7988d-dsa-e2p5g-spim-nand