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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>
This commit is contained in:
Roman Kapl 2020-02-07 10:55:29 +01:00 committed by Peter Maydell
parent 0e7bb14b56
commit 5fecbf0f0c
2 changed files with 24 additions and 0 deletions
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21
hw/arm/fsl-imx6.c
View File

@ -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);

3
include/hw/arm/fsl-imx6.h
View File

@ -21,6 +21,7 @@
#include "hw/cpu/a9mpcore.h"
#include "hw/misc/imx6_ccm.h"
#include "hw/misc/imx6_src.h"
#include "hw/misc/imx2_wdt.h"
#include "hw/char/imx_serial.h"
#include "hw/timer/imx_gpt.h"
#include "hw/timer/imx_epit.h"
@ -42,6 +43,7 @@
#define FSL_IMX6_NUM_GPIOS 7
#define FSL_IMX6_NUM_ESDHCS 4
#define FSL_IMX6_NUM_ECSPIS 5
#define FSL_IMX6_NUM_WDTS 2
typedef struct FslIMX6State {
/*< private >*/
@ -59,6 +61,7 @@ typedef struct FslIMX6State {
IMXGPIOState gpio[FSL_IMX6_NUM_GPIOS];
SDHCIState esdhc[FSL_IMX6_NUM_ESDHCS];
IMXSPIState spi[FSL_IMX6_NUM_ECSPIS];
IMX2WdtState wdt[FSL_IMX6_NUM_WDTS];
IMXFECState eth;
MemoryRegion rom;
MemoryRegion caam;