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hw/arm: Add watchdog timer to Allwinner H40 and Bananapi board

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Add watchdog timer support to Allwinner-H40 and Bananapi.
The watchdog timer is added as an overlay to the Timer
module memory map.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Strahinja Jankovic <strahinja.p.jankovic@gmail.com>
Message-id: 20240115182757.1095012-4-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Guenter Roeck 2024-01-15 10:27:57 -08:00 • committed by Peter Maydell
parent 2a02da74f2
commit 2af71d28e7
4 changed files with 13 additions and 1 deletions
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1
hw/arm/Kconfig
View file

@ -411,6 +411,7 @@ config ALLWINNER_R40
select AHCI
select ALLWINNER_SRAMC
select ALLWINNER_A10_PIT
select ALLWINNER_WDT
select AXP2XX_PMU
select SERIAL
select ARM_TIMER

8
hw/arm/allwinner-r40.c
View file

@ -53,6 +53,7 @@ const hwaddr allwinner_r40_memmap[] = {
[AW_R40_DEV_OHCI2] = 0x01c1c400,
[AW_R40_DEV_CCU] = 0x01c20000,
[AW_R40_DEV_PIT] = 0x01c20c00,
[AW_R40_DEV_WDT] = 0x01c20c90,
[AW_R40_DEV_UART0] = 0x01c28000,
[AW_R40_DEV_UART1] = 0x01c28400,
[AW_R40_DEV_UART2] = 0x01c28800,
@ -279,6 +280,8 @@ static void allwinner_r40_init(Object *obj)
object_property_add_alias(obj, "clk1-freq", OBJECT(&s->timer),
"clk1-freq");
object_initialize_child(obj, "wdt", &s->wdt, TYPE_AW_WDT_SUN4I);
object_initialize_child(obj, "ccu", &s->ccu, TYPE_AW_R40_CCU);
for (int i = 0; i < AW_R40_NUM_MMCS; i++) {
@ -545,6 +548,11 @@ static void allwinner_r40_realize(DeviceState *dev, Error **errp)
sysbus_connect_irq(SYS_BUS_DEVICE(&s->emac), 0,
qdev_get_gpio_in(DEVICE(&s->gic), AW_R40_GIC_SPI_EMAC));
/* WDT */
sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_fatal);
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->wdt), 0,
allwinner_r40_memmap[AW_R40_DEV_WDT], 1);
/* Unimplemented devices */
for (unsigned i = 0; i < ARRAY_SIZE(r40_unimplemented); i++) {
create_unimplemented_device(r40_unimplemented[i].device_name,