i.MX: Add support for WDT on i.MX6

Uses the i.MX2 rudimentary watchdog driver.

Signed-off-by: Roman Kapl <rka@sysgo.com>
Message-id: 20200207095529.11309-1-rka@sysgo.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: removed accidental duplicate #include line]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c
index 552145b..ecc6285 100644
--- a/hw/arm/fsl-imx6.c
+++ b/hw/arm/fsl-imx6.c
@@ -91,6 +91,12 @@ static void fsl_imx6_init(Object *obj)
         sysbus_init_child_obj(obj, name, &s->spi[i], sizeof(s->spi[i]),
                               TYPE_IMX_SPI);
     }
+    for (i = 0; i < FSL_IMX6_NUM_WDTS; i++) {
+        snprintf(name, NAME_SIZE, "wdt%d", i);
+        sysbus_init_child_obj(obj, name, &s->wdt[i], sizeof(s->wdt[i]),
+                              TYPE_IMX2_WDT);
+    }
+
 
     sysbus_init_child_obj(obj, "eth", &s->eth, sizeof(s->eth), TYPE_IMX_ENET);
 }
@@ -383,6 +389,21 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
                        qdev_get_gpio_in(DEVICE(&s->a9mpcore),
                                         FSL_IMX6_ENET_MAC_1588_IRQ));
 
+    /*
+     * Watchdog
+     */
+    for (i = 0; i < FSL_IMX6_NUM_WDTS; i++) {
+        static const hwaddr FSL_IMX6_WDOGn_ADDR[FSL_IMX6_NUM_WDTS] = {
+            FSL_IMX6_WDOG1_ADDR,
+            FSL_IMX6_WDOG2_ADDR,
+        };
+
+        object_property_set_bool(OBJECT(&s->wdt[i]), true, "realized",
+                                 &error_abort);
+
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt[i]), 0, FSL_IMX6_WDOGn_ADDR[i]);
+    }
+
     /* ROM memory */
     memory_region_init_rom(&s->rom, NULL, "imx6.rom",
                            FSL_IMX6_ROM_SIZE, &err);