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| author | Stefan Roese <sr@denx.de> | 2018-10-09 09:59:10 +0300 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2018-11-18 18:02:22 +0300 |
| commit | 4ff942b059c66c943a3ae94b6f96b3de239e9eaa (patch) | |
| tree | d5a57a51c29f4cb2ca46f94da9a174b88249db6e | |
| parent | b4a6a1bb3f6a3a52a1cfebe21cd6aa679bf10b1f (diff) | |
| download | u-boot-4ff942b059c66c943a3ae94b6f96b3de239e9eaa.tar.xz | |
mips: mt76xx: Enable watchdog support
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>
[fixed build error due to missing function prototype arch_misc_init]
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/u-boot-mips.h | 2 | ||||
| -rw-r--r-- | arch/mips/mach-mt7620/cpu.c | 40 |
3 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 8278c68817..1b1b1d7d00 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/include/asm/u-boot-mips.h b/arch/mips/include/asm/u-boot-mips.h index f4bfbdc693..88438b9576 100644 --- a/arch/mips/include/asm/u-boot-mips.h +++ b/arch/mips/include/asm/u-boot-mips.h @@ -7,4 +7,6 @@ void exc_handler(void); void except_vec3_generic(void); void except_vec_ejtag_debug(void); +int arch_misc_init(void); + #endif /* _U_BOOT_MIPS_H_ */ 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 |