This patch enables and starts the watchdog on the MT7620 platform. Currently the WD timeout is configured to 60 seconds.
Signed-off-by: Stefan Roese sr@denx.de Cc: Daniel Schwierzeck daniel.schwierzeck@gmail.com --- arch/mips/Kconfig | 1 + arch/mips/mach-mt7620/cpu.c | 40 +++++++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 0aa23981d4..54a483075f 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -79,6 +79,7 @@ config ARCH_MT7620 select DM_SERIAL imply DM_SPI imply DM_SPI_FLASH + select ARCH_MISC_INIT if WATCHDOG select MIPS_TUNE_24KC select OF_CONTROL select ROM_EXCEPTION_VECTORS diff --git a/arch/mips/mach-mt7620/cpu.c b/arch/mips/mach-mt7620/cpu.c index 457f09f32c..87cc973b75 100644 --- a/arch/mips/mach-mt7620/cpu.c +++ b/arch/mips/mach-mt7620/cpu.c @@ -6,6 +6,7 @@ #include <common.h> #include <dm.h> #include <ram.h> +#include <wdt.h> #include <asm/io.h> #include <linux/io.h> #include <linux/sizes.h> @@ -67,3 +68,42 @@ int print_cpuinfo(void)
return 0; } + +#ifdef CONFIG_WATCHDOG +static struct udevice *watchdog_dev; + +/* Called by macro WATCHDOG_RESET */ +void watchdog_reset(void) +{ + static ulong next_reset; + ulong now; + + if (!watchdog_dev) + return; + + now = get_timer(0); + + /* Do not reset the watchdog too often */ + if (now > next_reset) { + next_reset = now + 1000; /* reset every 1000ms */ + wdt_reset(watchdog_dev); + } +} + +int arch_misc_init(void) +{ + /* Init watchdog */ + if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) { + debug("Watchdog: Not found by seq!\n"); + if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) { + puts("Watchdog: Not found!\n"); + return 0; + } + } + + wdt_start(watchdog_dev, 60000, 0); /* 60 seconds */ + printf("Watchdog: Started\n"); + + return 0; +} +#endif