diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c
index b43afd250d..7d5a53c4c0 100644
--- a/hw/i2c/aspeed_i2c.c
+++ b/hw/i2c/aspeed_i2c.c
@@ -1014,7 +1014,7 @@ static void aspeed_i2c_realize(DeviceState *dev, Error **errp)
 
     sysbus_init_irq(sbd, &s->irq);
     memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_i2c_ctrl_ops, s,
-                          "aspeed.i2c", 0x1000);
+                          "aspeed.i2c", aic->mem_size);
     sysbus_init_mmio(sbd, &s->iomem);
 
     for (i = 0; i < aic->num_busses; i++) {
@@ -1286,6 +1286,7 @@ static void aspeed_2400_i2c_class_init(ObjectClass *klass, void *data)
     aic->pool_size = 0x800;
     aic->pool_base = 0x800;
     aic->bus_pool_base = aspeed_2400_i2c_bus_pool_base;
+    aic->mem_size = 0x1000;
 }
 
 static const TypeInfo aspeed_2400_i2c_info = {
@@ -1320,6 +1321,7 @@ static void aspeed_2500_i2c_class_init(ObjectClass *klass, void *data)
     aic->bus_pool_base = aspeed_2500_i2c_bus_pool_base;
     aic->check_sram = true;
     aic->has_dma = true;
+    aic->mem_size = 0x1000;
 }
 
 static const TypeInfo aspeed_2500_i2c_info = {
@@ -1353,6 +1355,7 @@ static void aspeed_2600_i2c_class_init(ObjectClass *klass, void *data)
     aic->pool_base = 0xC00;
     aic->bus_pool_base = aspeed_2600_i2c_bus_pool_base;
     aic->has_dma = true;
+    aic->mem_size = 0x1000;
 }
 
 static const TypeInfo aspeed_2600_i2c_info = {
@@ -1376,6 +1379,7 @@ static void aspeed_1030_i2c_class_init(ObjectClass *klass, void *data)
     aic->pool_base = 0xC00;
     aic->bus_pool_base = aspeed_2600_i2c_bus_pool_base;
     aic->has_dma = true;
+    aic->mem_size = 0x10000;
 }
 
 static const TypeInfo aspeed_1030_i2c_info = {
diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h
index a064479e59..065b636d29 100644
--- a/include/hw/i2c/aspeed_i2c.h
+++ b/include/hw/i2c/aspeed_i2c.h
@@ -283,7 +283,7 @@ struct AspeedI2CClass {
     uint8_t *(*bus_pool_base)(AspeedI2CBus *);
     bool check_sram;
     bool has_dma;
-
+    uint64_t mem_size;
 };
 
 static inline bool aspeed_i2c_is_new_mode(AspeedI2CState *s)