On Friday, November 18, 2016 03:05:53 PM Jonathan Nicklin wrote: > 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. On some boards you may need to use the WDAT-based watchdog driver introduced by commit 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog). Thanks, Rafael > 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
