nixos-hardware/common/cpu/amd/pstate.nix

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{ lib, config, ... }:
let
kver = config.boot.kernelPackages.kernel.version;
in
{
# Enables the amd cpu scaling https://www.kernel.org/doc/html/latest/admin-guide/pm/amd-pstate.html
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# On recent AMD CPUs this can be more energy efficient.
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imports = [ ./. ];
boot = lib.mkMerge [
(lib.mkIf
(
(lib.versionAtLeast kver "5.17")
&& (lib.versionOlder kver "6.1")
)
{
kernelParams = [ "initcall_blacklist=acpi_cpufreq_init" ];
kernelModules = [ "amd-pstate" ];
})
(lib.mkIf
(
(lib.versionAtLeast kver "6.1")
&& (lib.versionOlder kver "6.3")
)
{
kernelParams = [ "amd_pstate=passive" ];
})
(lib.mkIf (lib.versionAtLeast kver "6.3") {
kernelParams = [ "amd_pstate=active" ];
})
];
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}