Bug 2224726

Summary:	Add support for Giagabyte Z790 AERO G in it87 kernel driver
Product:	[Fedora] Fedora	Reporter:	George Petasis <petasisg>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	38	CC:	acaringi, adscvr, airlied, alciregi, bskeggs, hdegoede, hpa, jarodwilson, josef, kernel-maint, lgoncalv, linville, masami256, mchehab, ptalbert, steved, y9t7sypezp
Target Milestone:	---	Keywords:	Desktop, EasyFix
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-05-28 13:34:17 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description George Petasis 2023-07-22 14:25:08 UTC

I am trying to load kernel driver it87 for my Gigabyte Z790 AERO G motherboard (it is not loaded automatically).
The Z790 AERO G has two chips, ITE IT8689E & ITE IT87952E.

Trying "modprobe it87 ignore_resource_conflict=1 force_id=0x8695,0x8689" loads, but I see in dmesg:

[ 1240.576414] it87: Found IT87952E chip at 0xa40, revision 2
[ 1240.576558] it87: Beeping is supported
[ 1240.576564] ACPI Warning: SystemIO range 0x0000000000000A45-0x0000000000000A46 conflicts with OpRegion 0x0000000000000A45-0x0000000000000A46 (\GSA1.SIO1) (20221020/utaddress-204)
[ 1240.576575] ACPI: OSL: Resource conflict; ACPI support missing from driver?

Only the second chip is detected (but then its not visible in lm_sensors).
The same happens if I change the ids of the two chips:

force_id=0x8689,0x8695

If I try "modprobe it87 ignore_resource_conflict=1 force_id=0x8689" I get the following error:

modprobe: ERROR: could not insert 'it87': No such device

I was looking at the source of it87 in kernel, and around line 3414, there are references to specific motherboards:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/hwmon/it87.c?h=linux-6.3.y#n3414

Can the string "Z790 AERO G" be also added there?

dmidecode|grep -i z790
	Product Name: Z790 AERO G
	Family: Z790 MB
	Product Name: Z790 AERO G


Reproducible: Always

Steps to Reproduce:
1.modprobe it87 ignore_resource_conflict=1 ignore_resource_conflict=1 force_id=0x8689,0x8695

Has to be run on Gigabyte Z790 AERO G boards
Actual Results:  
Only one of the two io-sensors chips detected.

Expected Results:  
Both io-sensors chips detected, and lm_sensors able to use them to report, voltages, fan speeds, etc.

Comment 1 Steve 2023-09-20 17:34:15 UTC

As a workaround, you can append "acpi_enforce_resources=lax" to the kernel command-line:
https://hansdegoede.livejournal.com/7932.html

That worked for me on an ASUS motherboard with a different I/O chip until the the bug was fixed:
Bug 2127658 - nct6775 does not populate /sys/class/hwmon/ on ASUS motherboard with NCT6798D sensor chip

Comment 2 Aoife Moloney 2024-05-28 13:34:17 UTC

Fedora Linux 38 entered end-of-life (EOL) status on 2024-05-21.

Fedora Linux 38 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of Fedora Linux
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