diff options
Diffstat (limited to 'drivers/watchdog/imxwd.c')
| -rw-r--r-- | drivers/watchdog/imxwd.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c index 43e4803928..7bbb86c405 100644 --- a/drivers/watchdog/imxwd.c +++ b/drivers/watchdog/imxwd.c @@ -103,6 +103,18 @@ static int imx_watchdog_set_timeout(struct watchdog *wd, unsigned timeout) return priv->set_timeout(priv, timeout); } +static struct imx_wd *reset_wd; + +void __noreturn reset_cpu(unsigned long addr) +{ + if (reset_wd) + reset_wd->set_timeout(reset_wd, -1); + + mdelay(1000); + + hang(); +} + static int imx_wd_probe(struct device_d *dev) { struct imx_wd *priv; @@ -119,16 +131,22 @@ static int imx_wd_probe(struct device_d *dev) priv->wd.set_timeout = imx_watchdog_set_timeout; priv->dev = dev; - ret = watchdog_register(&priv->wd); - if (ret) - goto on_error; + if (!reset_wd) + reset_wd = priv; + + if (IS_ENABLED(CONFIG_WATCHDOG_IMX)) { + ret = watchdog_register(&priv->wd); + if (ret) + goto on_error; + } dev->priv = priv; return 0; on_error: - free(priv); + if (reset_wd && reset_wd != priv) + free(priv); return ret; } @@ -136,8 +154,11 @@ static void imx_wd_remove(struct device_d *dev) { struct imx_wd *priv = dev->priv; - watchdog_deregister(&priv->wd); - free(priv); + if (IS_ENABLED(CONFIG_WATCHDOG_IMX)) + watchdog_deregister(&priv->wd); + + if (reset_wd && reset_wd != priv) + free(priv); } static __maybe_unused struct of_device_id imx_wdt_dt_ids[] = { |