- iTCO_wdt issue: can't request region for resource -

[ionutnechita]

[ 0.760862] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 [ 0.760937] iTCO_wdt iTCO_wdt: can't request region for resource [mem 0x00c5fffc-0x00c5ffff] [ 0.760942] iTCO_wdt: probe of iTCO_wdt failed with error -16

lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 142 Model name: Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz Stepping: 9 CPU MHz: 3932.239 CPU max MHz: 4000.0000 CPU min MHz: 400.0000 BogoMIPS: 7008.00 L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 4096K Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq monitor est tm2 ssse3 fma cx16 xtpr sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault epb pti ssbd ibrs ibpb stibp fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp flush_l1d

lspci 00:00.0 Host bridge: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Host Bridge (rev 0b) 00:02.0 VGA compatible controller: Intel Corporation Device 5927 (rev 06) 00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model 00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21) 00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21) 00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 (rev f1) 00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1) 00:1c.7 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #8 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Intel(R) 100 Series Chipset Family LPC Controller/eSPI Controller - 9D4E (rev 21) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21) 00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21) 00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21) 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (4) I219-V (rev 21) 3a:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78) 3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)

NUC7i7BNH

Linux os1 4.19.128-109.iot-lts2018-sos #1 SMP PREEMPT Sat Jun 20 15:06:27 PDT 2020 x86_64 x86_64 x86_64 GNU/Linux

Service OS: Ubuntu 18.04.4

[bwarden]

I don't see it mentioned in the release notes, but I would first make sure you're running the latest BIOS, as that's where the problem lies: https://downloadcenter.intel.com/product/95065/Intel-NUC-Kit-NUC7i7BNH

References: https://community.intel.com/t5/Intel-NUCs/Intel-NUC-NUC8i3BEK-Hardware-Watchdog-iTCO-Linux-Error/td-p/647015 https://www.spinics.net/lists/linux-i2c/msg41516.html

[ionutnechita]

with new update for BIOS this issue continue appear.

[ionutnechita]

i use ACRN hypervisor.

[bwarden]

In that case, I don't think there's anything we can do from the Clear Linux side. You might want to check with the ACRN project: (https://github.com/projectacrn/acrn-hypervisor), as I see they do some memory remapping for that NUC (and others) -- apparently they also refer to it as "nuc7i7dnb" in some of the code.

[bwarden]

I really know nothing about ACRN, but I only found that address range in https://github.com/projectacrn/acrn-hypervisor/blob/master/misc/acrn-config/xmls/board-xmls/whl-ipc-i5.xml#L194, while it looks like your NUC should be using https://github.com/projectacrn/acrn-hypervisor/blob/master/misc/acrn-config/xmls/board-xmls/nuc7i7dnb.xml#L261.

[ionutnechita]

thanks for support