hw/arm/aspeed_ast27x0: Wire SGPIO controller to AST2700 SoC

This commit integrates the Aspeed SGPIO controller into the AST2700

Signed-off-by: Yubin Zou <yubinz@google.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251219-aspeed-sgpio-v5-5-fd5593178144@google.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

hw/arm/aspeed_ast27x0.c

@@ -519,6 +519,11 @@ static void aspeed_soc_ast2700_init(Object *obj)
     snprintf(typename, sizeof(typename), "aspeed.gpio-%s", socname);
     object_initialize_child(obj, "gpio", &s->gpio, typename);
 
+    snprintf(typename, sizeof(typename), "aspeed.sgpio-%s", socname);
+    for (i = 0; i < sc->sgpio_num; i++) {
+        object_initialize_child(obj, "sgpio[*]", &s->sgpiom[i], typename);
+    }
+
     object_initialize_child(obj, "rtc", &s->rtc, TYPE_ASPEED_RTC);
 
     snprintf(typename, sizeof(typename), "aspeed.sdhci-%s", socname);
@@ -975,6 +980,17 @@ static void aspeed_soc_ast2700_realize(DeviceState *dev, Error **errp)
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), 0,
                        aspeed_soc_ast2700_get_irq(s, ASPEED_DEV_GPIO));
 
+    /* SGPIO */
+    for (i = 0; i < sc->sgpio_num; i++) {
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->sgpiom[i]), errp)) {
+            return;
+        }
+        aspeed_mmio_map(s->memory, SYS_BUS_DEVICE(&s->sgpiom[i]), 0,
+                        sc->memmap[ASPEED_DEV_SGPIOM0 + i]);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->sgpiom[i]), 0,
+                        aspeed_soc_ast2700_get_irq(s, ASPEED_DEV_SGPIOM0 + i));
+    }
+
     /* RTC */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->rtc), errp)) {
         return;