Hi, While looking into Giovanni's patches to enable frequency invariance on AMD systems[0], I noticed an issue with initialising frequency domain information on a recent AMD APU.
Patch 1 refactors the test to ignore firmware provided frequency domain into a separate function. Patch 2 adds said APU (Family: 0x17, Model: 0x60, Stepping: 0x01) to the list of CPUs for which the PSD override is ignored. I am not quite happy with having to special case a particular CPU but also couldn't find any documentation to help identify the CPUs that don't need the override. Patch 3 and 4 are somewhat independent and a first step towards improving the situation with regards to the use of raw identifiers for AMD processors throughout the kernel. All feedback welcome. Thanks, Punit [0] https://lore.kernel.org/linux-acpi/20201112182614.10700-1-ggherdov...@suse.cz/ Punit Agrawal (4): cpufreq: acpi-cpufreq: Re-factor overriding ACPI PSD cpufreq: acpi-cpufreq: Add processor to the ignore PSD override list x86/cpu: amd: Define processor families cpufreq: acpi-cpufreq: Use identifiers for AMD processor family arch/x86/include/asm/amd-family.h | 18 ++++++++++++++++++ arch/x86/include/asm/cpu_device_id.h | 2 ++ drivers/cpufreq/acpi-cpufreq.c | 24 +++++++++++++++++++++--- 3 files changed, 41 insertions(+), 3 deletions(-) create mode 100644 arch/x86/include/asm/amd-family.h -- 2.29.2
