https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280942
Bug ID: 280942
Summary: amdsmn(4), amdtemp(4): add support for AMD Family 19h
Models 10h-1Fh.
Product: Base System
Version: CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 252943
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=252943&action=edit
Patch for amdsmn.c and amdtemp.c to support AMD Ryzen 7 "Phoenix"
The attached patch adds support for AMD Ryzen 7 "Phoenix" processors (family
0x19, model 0x70-0x7f) to the amdsmn(4) and amdtemp(4) drivers, enabling
temperature readings of these CPUs via sysctl. The sensors work the same as for
the "Raphael" processors (model 0x60-0x6f), only the PCI device ID differs.
The patch applies cleanly to (15-) current, 14-stable and 13-stable, including
14.1-RELEASE and 13.4-BETA. However, I have *not* tested it on 13, but I'm
fairly certain that it works there, too (as explained above, it's only the PCI
device ID).
Tested with Ryzen 7 8700G (family 0x19, model 0x75).
Kernel messages:
CPU: AMD Ryzen 7 8700G w/ Radeon 780M Graphics (4200.20-MHz K8-class CPU)
Origin="AuthenticAMD" Id=0xa70f52 Family=0x19 Model=0x75 Stepping=2
[...]
amdsmn0: <AMD Family 19h System Management Network> on hostb0
amdtemp0: <AMD CPU On-Die Thermal Sensors> on hostb0
$ sysctl dev.amdtemp
dev.amdtemp.0.core0.sensor0: 32.1C
dev.amdtemp.0.sensor_offset: 0
dev.amdtemp.0.%parent: hostb0
dev.amdtemp.0.%pnpinfo:
dev.amdtemp.0.%location:
dev.amdtemp.0.%driver: amdtemp
dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors
dev.amdtemp.%parent:
$ sysctl dev.cpu.0
dev.cpu.0.temperature: 32.1C
dev.cpu.0.cx_method: C1/hlt C2/io C3/io
dev.cpu.0.cx_usage_counters: 931437 0 0
dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 1557us
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_supported: C1/1/1 C2/2/18 C3/3/350
dev.cpu.0.freq_levels: 4200/5040 2200/2420 1600/1600
dev.cpu.0.freq: 1600
dev.cpu.0.%parent: acpi0
dev.cpu.0.%pnpinfo: _HID=ACPI0007 _UID=0 _CID=none
dev.cpu.0.%location: handle=\_SB_.PLTF.C000
dev.cpu.0.%driver: cpu
dev.cpu.0.%desc: ACPI CPU
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