diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig
index 151b004..d46be50 100644
--- a/arch/mips/mach-mtmips/Kconfig
+++ b/arch/mips/mach-mtmips/Kconfig
@@ -9,6 +9,7 @@
 
 config SYS_SOC
 	default "mt7620" if SOC_MT7620
+	default "mt7621" if SOC_MT7621
 	default "mt7628" if SOC_MT7628
 
 config SYS_DCACHE_SIZE
@@ -18,25 +19,45 @@
 	default 32
 
 config SYS_ICACHE_SIZE
-	default 65536
+	default 65536 if SOC_MT7620 || SOC_MT7628
+	default 32768 if SOC_MT7621
 
 config SYS_ICACHE_LINE_SIZE
 	default 32
 
+config SYS_SCACHE_LINE_SIZE
+	default 32 if SOC_MT7621
+
 config SYS_TEXT_BASE
-	default 0x9c000000 if !SPL
-	default 0x80200000 if SPL
+	default 0x9c000000 if !SPL && !SOC_MT7621
+	default 0x80200000 if SPL || SOC_MT7621
 
 config SPL_TEXT_BASE
-	default 0x9c000000
+	default 0x9c000000 if !SOC_MT7621
+	default 0x80100000 if SOC_MT7621
+
+config SPL_SIZE_LIMIT
+	default 0x30000 if SOC_MT7621
+
+config TPL_TEXT_BASE
+	default 0xbfc00000 if SOC_MT7621
+
+config TPL_MAX_SIZE
+	default 4096 if SOC_MT7621
 
 config SPL_PAYLOAD
 	default "u-boot-lzma.img" if SPL_LZMA
 
 config BUILD_TARGET
-	default "u-boot-with-spl.bin" if SPL
+	default "u-boot-with-spl.bin" if SPL && !SOC_MT7621
+	default "u-boot-lzma.img" if SOC_MT7621
 	default "u-boot.bin"
 
+config MAX_MEM_SIZE
+	int
+	default 256 if SOC_MT7620 || SOC_MT7628
+	default 512 if SOC_MT7621
+
 choice
 	prompt "MediaTek MIPS SoC select"
 
@@ -55,6 +76,23 @@
 	help
 	  This supports MediaTek MT7620.
 
+config SOC_MT7621
+	bool "MT7621"
+	select MIPS_CM
+	select MIPS_L2_CACHE
+	select SYS_CACHE_SHIFT_5
+	select SYS_MIPS_CACHE_INIT_RAM_LOAD
+	select PINCTRL_MT7621
+	select MTK_SERIAL
+	select REGMAP
+	select SYSCON
+	select BINMAN
+	select SUPPORT_TPL
+	select SPL_LOADER_SUPPORT if SPL
+	select SPL_INIT_STACK_WITHOUT_MALLOC_F if SPL
+	help
+	  This supports MediaTek MT7621.
+
 config SOC_MT7628
 	bool "MT7628"
 	select SYS_CACHE_SHIFT_5
@@ -80,6 +118,7 @@
 endchoice
 
 source "arch/mips/mach-mtmips/mt7620/Kconfig"
+source "arch/mips/mach-mtmips/mt7621/Kconfig"
 source "arch/mips/mach-mtmips/mt7628/Kconfig"
 
 endmenu