diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 7b5e603..c1f2b9c 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -547,6 +547,10 @@
     at24c_eeprom_init(aspeed_i2c_get_bus(&soc->i2c, 4), 0x54, 128 * KiB);
     at24c_eeprom_init_rom(aspeed_i2c_get_bus(&soc->i2c, 6), 0x54, 128 * KiB,
                           tiogapass_bmc_fruid, tiogapass_bmc_fruid_len);
+    /* TMP421 */
+    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 8), "tmp421", 0x1f);
+    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp421", 0x4f);
+    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp421", 0x4e);
 }
 
 static void create_pca9552(AspeedSoCState *soc, int bus_id, int addr)