diff --git a/hw/arm/aspeed_ast27x0-fc.c b/hw/arm/aspeed_ast27x0-fc.c
index dfac7d1e17..ba43a46207 100644
--- a/hw/arm/aspeed_ast27x0-fc.c
+++ b/hw/arm/aspeed_ast27x0-fc.c
@@ -138,6 +138,8 @@ static bool ast2700fc_ssp_init(MachineState *machine, Error **errp)
                             sc->uarts_num, serial_hd(1));
     object_property_set_link(OBJECT(&s->ssp), "sram",
                              OBJECT(&psp->sram), &error_abort);
+    object_property_set_link(OBJECT(&s->ssp), "scu",
+                             OBJECT(&psp->scu), &error_abort);
     if (!qdev_realize(DEVICE(&s->ssp), NULL, errp)) {
         return false;
     }
@@ -170,6 +172,8 @@ static bool ast2700fc_tsp_init(MachineState *machine, Error **errp)
                             sc->uarts_num, serial_hd(2));
     object_property_set_link(OBJECT(&s->tsp), "sram",
                              OBJECT(&psp->sram), &error_abort);
+    object_property_set_link(OBJECT(&s->tsp), "scu",
+                             OBJECT(&psp->scu), &error_abort);
     if (!qdev_realize(DEVICE(&s->tsp), NULL, errp)) {
         return false;
     }
diff --git a/hw/arm/aspeed_ast27x0-ssp.c b/hw/arm/aspeed_ast27x0-ssp.c
index 66c4ef6d1b..577a3379c6 100644
--- a/hw/arm/aspeed_ast27x0-ssp.c
+++ b/hw/arm/aspeed_ast27x0-ssp.c
@@ -137,9 +137,7 @@ static void aspeed_soc_ast27x0ssp_init(Object *obj)
     int i;
 
     object_initialize_child(obj, "armv7m", &a->armv7m, TYPE_ARMV7M);
-    object_initialize_child(obj, "scu", &s->scu, TYPE_ASPEED_2700_SCU);
     s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
-    qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev", sc->silicon_rev);
 
     for (i = 0; i < sc->uarts_num; i++) {
         object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_SERIAL_MM);
@@ -203,11 +201,11 @@ static void aspeed_soc_ast27x0ssp_realize(DeviceState *dev_soc, Error **errp)
                                 &s->sram_alias);
 
     /* SCU */
-    if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
-        return;
-    }
-    aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&s->scu), 0,
-                    sc->memmap[ASPEED_DEV_SCU]);
+    memory_region_init_alias(&s->scu_alias, OBJECT(s), "scu.alias",
+                             &s->scu->iomem, 0,
+                             memory_region_size(&s->scu->iomem));
+    memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_SCU],
+                                &s->scu_alias);
 
     /* INTC */
     if (!sysbus_realize(SYS_BUS_DEVICE(&a->intc[0]), errp)) {
@@ -285,7 +283,6 @@ static void aspeed_soc_ast27x0ssp_class_init(ObjectClass *klass,
     dc->realize = aspeed_soc_ast27x0ssp_realize;
 
     sc->valid_cpu_types = valid_cpu_types;
-    sc->silicon_rev = AST2700_A1_SILICON_REV;
     sc->uarts_num = 13;
     sc->uarts_base = ASPEED_DEV_UART0;
     sc->irqmap = aspeed_soc_ast27x0ssp_irqmap;
diff --git a/hw/arm/aspeed_ast27x0-tsp.c b/hw/arm/aspeed_ast27x0-tsp.c
index 56b68adf54..a7c141678f 100644
--- a/hw/arm/aspeed_ast27x0-tsp.c
+++ b/hw/arm/aspeed_ast27x0-tsp.c
@@ -137,9 +137,7 @@ static void aspeed_soc_ast27x0tsp_init(Object *obj)
     int i;
 
     object_initialize_child(obj, "armv7m", &a->armv7m, TYPE_ARMV7M);
-    object_initialize_child(obj, "scu", &s->scu, TYPE_ASPEED_2700_SCU);
     s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
-    qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev", sc->silicon_rev);
 
     for (i = 0; i < sc->uarts_num; i++) {
         object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_SERIAL_MM);
@@ -203,11 +201,11 @@ static void aspeed_soc_ast27x0tsp_realize(DeviceState *dev_soc, Error **errp)
                                 &s->sram_alias);
 
     /* SCU */
-    if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
-        return;
-    }
-    aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&s->scu), 0,
-                    sc->memmap[ASPEED_DEV_SCU]);
+    memory_region_init_alias(&s->scu_alias, OBJECT(s), "scu.alias",
+                             &s->scu->iomem, 0,
+                             memory_region_size(&s->scu->iomem));
+    memory_region_add_subregion(s->memory, sc->memmap[ASPEED_DEV_SCU],
+                                &s->scu_alias);
 
     /* INTC */
     if (!sysbus_realize(SYS_BUS_DEVICE(&a->intc[0]), errp)) {
@@ -285,7 +283,6 @@ static void aspeed_soc_ast27x0tsp_class_init(ObjectClass *klass,
     dc->realize = aspeed_soc_ast27x0tsp_realize;
 
     sc->valid_cpu_types = valid_cpu_types;
-    sc->silicon_rev = AST2700_A1_SILICON_REV;
     sc->uarts_num = 13;
     sc->uarts_base = ASPEED_DEV_UART0;
     sc->irqmap = aspeed_soc_ast27x0tsp_irqmap;
diff --git a/hw/arm/aspeed_coprocessor_common.c b/hw/arm/aspeed_coprocessor_common.c
index 8322ad5eb5..14e26bbe23 100644
--- a/hw/arm/aspeed_coprocessor_common.c
+++ b/hw/arm/aspeed_coprocessor_common.c
@@ -27,6 +27,8 @@ static const Property aspeed_coprocessor_properties[] = {
                      TYPE_MEMORY_REGION, MemoryRegion *),
     DEFINE_PROP_LINK("sram", AspeedCoprocessorState, sram, TYPE_MEMORY_REGION,
                      MemoryRegion *),
+    DEFINE_PROP_LINK("scu", AspeedCoprocessorState, scu, TYPE_ASPEED_SCU,
+                     AspeedSCUState *),
 };
 
 static void aspeed_coprocessor_class_init(ObjectClass *oc, const void *data)
diff --git a/include/hw/arm/aspeed_coprocessor.h b/include/hw/arm/aspeed_coprocessor.h
index d9a5f517d7..c1f2c549c3 100644
--- a/include/hw/arm/aspeed_coprocessor.h
+++ b/include/hw/arm/aspeed_coprocessor.h
@@ -19,9 +19,10 @@ struct AspeedCoprocessorState {
     MemoryRegion sdram;
     MemoryRegion *sram;
     MemoryRegion sram_alias;
+    MemoryRegion scu_alias;
     Clock *sysclk;
 
-    AspeedSCUState scu;
+    AspeedSCUState *scu;
     AspeedSCUState scuio;
     AspeedTimerCtrlState timerctrl;
     SerialMM uart[ASPEED_UARTS_NUM];
@@ -36,7 +37,6 @@ struct AspeedCoprocessorClass {
 
     /** valid_cpu_types: NULL terminated array of a single CPU type. */
     const char * const *valid_cpu_types;
-    uint32_t silicon_rev;
     const hwaddr *memmap;
     const int *irqmap;
     int uarts_base;