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| author | Perry Yuan <[email protected]> | 2024-04-25 16:07:58 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2024-04-26 19:35:38 +0200 |
| commit | eb8b6c36820214df96e7e86d8614d93f6b028f28 (patch) | |
| tree | 3171ee196cbce85357ee3c43526e97a68a7a19e9 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 5f8f9bc4d7bc8d44031b88b548c2572b746e2611 (diff) | |
cpufreq: amd-pstate: Add quirk for the pstate CPPC capabilities missing
Add quirks table to get CPPC capabilities issue fixed by providing
correct perf or frequency values while driver loading.
If CPPC capabilities are not defined in the ACPI tables or wrongly
defined by platform firmware, it needs to use quick to get those
issues fixed with correct workaround values to make pstate driver
can be loaded even though there are CPPC capabilities errors.
The workaround will match the broken BIOS which lack of CPPC capabilities
nominal_freq and lowest_freq definition in the ACPI table.
$ cat /sys/devices/system/cpu/cpu0/acpi_cppc/lowest_freq
0
$ cat /sys/devices/system/cpu/cpu0/acpi_cppc/nominal_freq
0
Acked-by: Huang Rui <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Reviewed-by: Gautham R. Shenoy <[email protected]>
Tested-by: Dhananjay Ugwekar <[email protected]>
Signed-off-by: Perry Yuan <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions