aspeed/soc: Support Timer for AST2700

Add Timer model for AST2700 Timer support. The Timer controller include 8 sets
of 32-bit decrement counters.

The base address of TIMER0 to TIMER7 as following.
Base Address of Timer 0 = 0x12C1_0000
Base Address of Timer 1 = 0x12C1_0040
Base Address of Timer 2 = 0x12C1_0080
Base Address of Timer 3 = 0x12C1_00C0
Base Address of Timer 4 = 0x12C1_0100
Base Address of Timer 5 = 0x12C1_0140
Base Address of Timer 6 = 0x12C1_0180
Base Address of Timer 7 = 0x12C1_01C0

The interrupt of TIMER0 to TIMER7 as following.
GICINT16 = TIMER 0 interrupt
GICINT17 = TIMER 1 interrupt
GICINT18 = TIMER 2 interrupt
GICINT19 = TIMER 3 interrupt
GICINT20 = TIMER 4 interrupt
GICINT21 = TIMER 5 interrupt
GICINT22 = TIMER 6 interrupt
GICINT23 = TIMER 7 interrupt

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20250113064455.1660564-4-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

Author: jamin-aspeed

hw/arm/aspeed_ast27x0.c

@@ -66,6 +66,7 @@ static const hwaddr aspeed_soc_ast2700_memmap[] = {
     [ASPEED_DEV_GPIO]      =  0x14C0B000,
     [ASPEED_DEV_RTC]       =  0x12C0F000,
     [ASPEED_DEV_SDHCI]     =  0x14080000,
+    [ASPEED_DEV_TIMER1]    =  0x12C10000,
 };
 
 #define AST2700_MAX_IRQ 256
@@ -397,6 +398,9 @@ static void aspeed_soc_ast2700_init(Object *obj)
 
     object_initialize_child(obj, "emmc-controller.sdhci", &s->emmc.slots[0],
                             TYPE_SYSBUS_SDHCI);
+
+    snprintf(typename, sizeof(typename), "aspeed.timer-%s", socname);
+    object_initialize_child(obj, "timerctrl", &s->timerctrl, typename);
 }
 
 /*
@@ -716,6 +720,19 @@ static void aspeed_soc_ast2700_realize(DeviceState *dev, Error **errp)
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->emmc), 0,
                        aspeed_soc_get_irq(s, ASPEED_DEV_EMMC));
 
+    /* Timer */
+    object_property_set_link(OBJECT(&s->timerctrl), "scu", OBJECT(&s->scu),
+                             &error_abort);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->timerctrl), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->timerctrl), 0,
+                    sc->memmap[ASPEED_DEV_TIMER1]);
+    for (i = 0; i < ASPEED_TIMER_NR_TIMERS; i++) {
+        irq = aspeed_soc_get_irq(s, ASPEED_DEV_TIMER1 + i);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->timerctrl), i, irq);
+    }
+
     create_unimplemented_device("ast2700.dpmcu", 0x11000000, 0x40000);
     create_unimplemented_device("ast2700.iomem0", 0x12000000, 0x01000000);
     create_unimplemented_device("ast2700.iomem1", 0x14000000, 0x01000000);