diff --git a/mt7996/eeprom.c b/mt7996/eeprom.c
index 4a8237118..7e2d585a2 100644
--- a/mt7996/eeprom.c
+++ b/mt7996/eeprom.c
@@ -26,6 +26,8 @@ static char *mt7996_eeprom_name(struct mt7996_dev *dev)
 {
 	switch (mt76_chip(&dev->mt76)) {
 	case 0x7990:
+		if (dev->var_type == MT7996_VAR_TYPE_233)
+			return MT7996_EEPROM_DEFAULT_233;
 		return MT7996_EEPROM_DEFAULT;
 	case 0x7992:
 		return MT7992_EEPROM_DEFAULT;
diff --git a/mt7996/init.c b/mt7996/init.c
index 5e9697322..ab1a9a8ee 100644
--- a/mt7996/init.c
+++ b/mt7996/init.c
@@ -884,6 +884,27 @@ static void mt7996_wed_rro_work(struct work_struct *work)
 #endif
 }
 
+static int mt7996_chip_variant_init(struct mt7996_dev *dev)
+{
+	u32 val = mt76_rr(dev, MT_PAD_GPIO);
+
+	switch (mt76_chip(&dev->mt76)) {
+	case 0x7990:
+		if (u32_get_bits(val, MT_PAD_GPIO_2ADIE_TBTC))
+			dev->var_type = MT7996_VAR_TYPE_233;
+		else
+			dev->var_type = MT7996_VAR_TYPE_444;
+		break;
+	case 0x7992:
+		dev->var_type = MT7992_VAR_TYPE_44;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int mt7996_init_hardware(struct mt7996_dev *dev)
 {
 	int ret, idx;
@@ -899,6 +920,10 @@ static int mt7996_init_hardware(struct mt7996_dev *dev)
 	INIT_LIST_HEAD(&dev->wed_rro.poll_list);
 	spin_lock_init(&dev->wed_rro.lock);
 
+	ret = mt7996_chip_variant_init(dev);
+	if (ret)
+		return ret;
+
 	ret = mt7996_dma_init(dev);
 	if (ret)
 		return ret;
diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index b01adae2f..da1292ba2 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -17,6 +17,11 @@
 		_fw = MT7992_##name;				\
 		break;						\
 	case 0x7990:						\
+		if ((_dev)->var_type == MT7996_VAR_TYPE_233)	\
+			_fw = MT7996_##name##_233;		\
+		else						\
+			_fw = MT7996_##name;			\
+		break;						\
 	default:						\
 		_fw = MT7996_##name;				\
 		break;						\
@@ -2851,6 +2856,7 @@ static int __mt7996_load_ram(struct mt7996_dev *dev, const char *fw_type,
 
 static int mt7996_load_ram(struct mt7996_dev *dev)
 {
+	const char *dsp_name;
 	int ret;
 
 	ret = __mt7996_load_ram(dev, "WM", fw_name(dev, FIRMWARE_WM),
@@ -2858,7 +2864,8 @@ static int mt7996_load_ram(struct mt7996_dev *dev)
 	if (ret)
 		return ret;
 
-	ret = __mt7996_load_ram(dev, "DSP", fw_name(dev, FIRMWARE_DSP),
+	dsp_name = is_mt7996(&dev->mt76) ? MT7996_FIRMWARE_DSP : MT7992_FIRMWARE_DSP;
+	ret = __mt7996_load_ram(dev, "DSP", dsp_name,
 				MT7996_RAM_TYPE_DSP);
 	if (ret)
 		return ret;
diff --git a/mt7996/mt7996.h b/mt7996/mt7996.h
index ab8c90706..e9fc61344 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -34,12 +34,17 @@
 #define MT7996_FIRMWARE_DSP		"mediatek/mt7996/mt7996_dsp.bin"
 #define MT7996_ROM_PATCH		"mediatek/mt7996/mt7996_rom_patch.bin"
 
+#define MT7996_FIRMWARE_WA_233		"mediatek/mt7996/mt7996_wa_233.bin"
+#define MT7996_FIRMWARE_WM_233		"mediatek/mt7996/mt7996_wm_233.bin"
+#define MT7996_ROM_PATCH_233		"mediatek/mt7996/mt7996_rom_patch_233.bin"
+
 #define MT7992_FIRMWARE_WA		"mediatek/mt7996/mt7992_wa.bin"
 #define MT7992_FIRMWARE_WM		"mediatek/mt7996/mt7992_wm.bin"
 #define MT7992_FIRMWARE_DSP		"mediatek/mt7996/mt7992_dsp.bin"
 #define MT7992_ROM_PATCH		"mediatek/mt7996/mt7992_rom_patch.bin"
 
 #define MT7996_EEPROM_DEFAULT		"mediatek/mt7996/mt7996_eeprom.bin"
+#define MT7996_EEPROM_DEFAULT_233	"mediatek/mt7996/mt7996_eeprom_233.bin"
 #define MT7992_EEPROM_DEFAULT		"mediatek/mt7996/mt7992_eeprom.bin"
 #define MT7996_EEPROM_SIZE		7680
 #define MT7996_EEPROM_BLOCK_SIZE	16
@@ -89,6 +94,14 @@ struct mt7996_sta;
 struct mt7996_dfs_pulse;
 struct mt7996_dfs_pattern;
 
+enum mt7996_var_type {
+	MT7996_VAR_TYPE_444,
+	MT7996_VAR_TYPE_233,
+
+	/* mt7992 */
+	MT7992_VAR_TYPE_44,
+};
+
 enum mt7996_ram_type {
 	MT7996_RAM_TYPE_WM,
 	MT7996_RAM_TYPE_WA,
@@ -329,6 +342,7 @@ struct mt7996_dev {
 	spinlock_t reg_lock;
 
 	u8 wtbl_size_group;
+	u8 var_type;
 };
 
 enum {
@@ -406,8 +420,7 @@ mt7996_band_valid(struct mt7996_dev *dev, u8 band)
 		return band <= MT_BAND1;
 
 	/* tri-band support */
-	if (band <= MT_BAND2 &&
-	    mt76_get_field(dev, MT_PAD_GPIO, MT_PAD_GPIO_ADIE_COMB) <= 1)
+	if (band <= MT_BAND2 && dev->var_type)
 		return true;
 
 	return band == MT_BAND0 || band == MT_BAND2;
diff --git a/mt7996/regs.h b/mt7996/regs.h
index 47b429d8b..734abec45 100644
--- a/mt7996/regs.h
+++ b/mt7996/regs.h
@@ -662,6 +662,7 @@ enum offs_rev {
 
 #define MT_PAD_GPIO				0x700056f0
 #define MT_PAD_GPIO_ADIE_COMB			GENMASK(16, 15)
+#define MT_PAD_GPIO_2ADIE_TBTC			BIT(19)
 
 #define MT_HW_REV				0x70010204
 #define MT_HW_REV1				0x8a00