Hello again, We have confirmed with the board manufacturer that the TOC watchdog was actually disabled via hardware. We have since modified the hardware and successfully initialized the TOC watchdog on a Broadwell SOC. Our immediate issue was not a software / driver issue. That said, we have yet to hear back from SuperMicro regarding their boards. Thanks, -Jonathan On Wed, Nov 16, 2016 at 11:08 AM, Jonathan Nicklin <jnicklin@xxxxxxxxxxxxxxx> wrote: > Hi Everyone, > > We have a number of systems that fail to initialize the iTCO watchdog > with “unable to reset NO_REBOOT flag, device disabled by > hardware/BIOS”. The systems include Broadwell SOC, Haswell w/ C222, > and Ivy Bridge w/ C600/X79. These systems have different BIOS > vendors/versions. We have tested with a few different kernel versions > as recent as 4.4. We have only managed successfully configure the iTCO > watchdog on a Haswell w/ C610/X99 system. > > Has anyone successfully used the iTCO watchdog on a Broadwell > Xeon-D/SOC system? Can anyone provide advice on how to debug this > issue? > > Thanks, > -Jonathan > > # uname -a > Linux soc 4.4.23-1.el7.elrepo.x86_64 #1 SMP Fri Sep 30 09:11:50 EDT > 2016 x86_64 x86_64 x86_64 GNU/Linux > > # dmesg | grep iTCO > [ 18.544987] iTCO_vendor_support: vendor-support=0 > [ 18.549213] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 > [ 18.549245] iTCO_wdt: unable to reset NO_REBOOT flag, device > disabled by hardware/BIOS > > # find /sys/devices | grep iTCO > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power/control > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power/runtime_active_time > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power/autosuspend_delay_ms > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power/runtime_status > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/power/runtime_suspended_time > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/driver_override > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/modalias > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/subsystem > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/uevent > /sys/devices/pci0000:00/0000:00:1f.0/iTCO_wdt.0.auto/firmware_node -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
