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| author | Perry Yuan <perry.yuan@amd.com> | 2024-02-08 11:46:28 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-03-05 13:23:12 +0100 |
| commit | a51ab63b297ce9e26e3ffb9be896018a42d5f32f (patch) | |
| tree | 08b4a69366337a99fa86d62623738ca056e16f43 /scripts/gcc-plugins/latent_entropy_plugin.c | |
| parent | 90d35da658da8cff0d4ecbb5113f5fac9d00eb72 (diff) | |
ACPI: CPPC: enable AMD CPPC V2 support for family 17h processors
As there are some AMD processors which only support CPPC V2 firmware and
BIOS implementation, the amd_pstate driver will be failed to load when
system booting with below kernel warning message:
[ 0.477523] amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled
To make the amd_pstate driver can be loaded on those TR40 processors, it
needs to match x86_model from 0x30 to 0x7F for family 17H.
With the change, the system can load amd_pstate driver as expected.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reported-by: Gino Badouri <badouri.g@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218171
Fixes: fbd74d1689 ("ACPI: CPPC: Fix enabling CPPC on AMD systems with shared memory")
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'scripts/gcc-plugins/latent_entropy_plugin.c')
0 files changed, 0 insertions, 0 deletions