diff options
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/imx_watchdog.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/watchdog/imx_watchdog.c b/drivers/watchdog/imx_watchdog.c index 01762df019b..b90c2daecee 100644 --- a/drivers/watchdog/imx_watchdog.c +++ b/drivers/watchdog/imx_watchdog.c @@ -16,6 +16,10 @@ #include <asm/arch/immap_lsch2.h> #endif #include <fsl_wdog.h> +#include <div64.h> + +#define TIMEOUT_MAX 128000 +#define TIMEOUT_MIN 500 static void imx_watchdog_expire_now(struct watchdog_regs *wdog, bool ext_reset) { @@ -57,9 +61,9 @@ static void imx_watchdog_reset(struct watchdog_regs *wdog) #endif /* CONFIG_WATCHDOG_RESET_DISABLE*/ } -static void imx_watchdog_init(struct watchdog_regs *wdog, bool ext_reset) +static void imx_watchdog_init(struct watchdog_regs *wdog, bool ext_reset, + u64 timeout) { - u16 timeout; u16 wcr; /* @@ -70,7 +74,11 @@ static void imx_watchdog_init(struct watchdog_regs *wdog, bool ext_reset) #ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS #define CONFIG_WATCHDOG_TIMEOUT_MSECS 128000 #endif - timeout = (CONFIG_WATCHDOG_TIMEOUT_MSECS / 500) - 1; + + timeout = max_t(u64, timeout, TIMEOUT_MIN); + timeout = min_t(u64, timeout, TIMEOUT_MAX); + timeout = lldiv(timeout, 500) - 1; + #ifdef CONFIG_FSL_LSCH2 wcr = (WCR_WDA | WCR_SRS | WCR_WDE) << 8 | timeout; #else @@ -95,7 +103,7 @@ void hw_watchdog_init(void) { struct watchdog_regs *wdog = (struct watchdog_regs *)WDOG1_BASE_ADDR; - imx_watchdog_init(wdog, true); + imx_watchdog_init(wdog, true, CONFIG_WATCHDOG_TIMEOUT_MSECS); } #else struct imx_wdt_priv { @@ -126,7 +134,7 @@ static int imx_wdt_start(struct udevice *dev, u64 timeout, ulong flags) { struct imx_wdt_priv *priv = dev_get_priv(dev); - imx_watchdog_init(priv->base, priv->ext_reset); + imx_watchdog_init(priv->base, priv->ext_reset, timeout); return 0; } |