Hi Andrew, > Add a driver for the hardware watchdogs in NVIDIA Tegra SoCs (Tegra30 and > later). This driver will configure one watchdog timer that will reset the > system in the case of a watchdog timeout. > > This driver binds to the nvidia,tegra30-timer device node and gets its > register base from there. > > Signed-off-by: Andrew Chew <achew@xxxxxxxxxx> > Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> > Tested-by: Stephen Warren <swarren@xxxxxxxxxx> > Reviewed-by: Stephen Warren <swarren@xxxxxxxxxx> > --- > Changes from v6: > > Removed kref stuff. We can't think of why it's needed here. > > Changes from v5: > > Changed license to GPL v2 per Stephen Warren's guidance. > > Changes from v4: > > Skip the error check from the platform_get_resources() call, because > devm_ioremap_resource() correctly handles the case when res is NULL. > > Changes from v3: > > Applied Cuenter Roeck <linux@xxxxxxxxxxxx>'s comments. In particular, > since tegra_wdt_start() and tegra_wdt_stop() always return success, skip > error checking for these calls. Also, removed some unnecessarily verbose > logging around which watchdog and timer ID is being used. Fixed typo > regarding the ref and unref callback setup. Removed miscdev stuff. > > Cuenter was right in that the watchdog doesn't need to be stopped prior > to changing the timeout. It is sufficient to just reprogram the watchdog > with the new timeout. > > Tested on T124. > > To do a simple test, "echo 0 > /dev/watchdog0". The target will reset when > two minutes (the default heartbeat interval) have expired since the last > write to /dev/watchdog0. > > Documentation/watchdog/watchdog-parameters.txt | 5 + > drivers/watchdog/Kconfig | 11 + > drivers/watchdog/Makefile | 1 + > drivers/watchdog/tegra_wdt.c | 302 +++++++++++++++++++++++++ > 4 files changed, 319 insertions(+) > create mode 100644 drivers/watchdog/tegra_wdt.c > Patch added to linux-watchdog-next. Kind regards, Wim. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
