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| author | Takashi Iwai <tiwai@suse.de> | 2009-12-17 12:27:22 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-17 12:27:22 +0100 |
| commit | 67cbf8a216259dceefe570f6dc14746f43b2e627 (patch) | |
| tree | 1eca0b9922dee01b4d00dc0713b7ff434dddd44c /Documentation/cpu-freq/user-guide.txt | |
| parent | 6c941c8556dd9269be621cd8159fc60e955a91b3 (diff) | |
| parent | 2fbe74b90bafebce615466b4c20f96b0465df1ae (diff) | |
| download | blackbird-op-linux-67cbf8a216259dceefe570f6dc14746f43b2e627.tar.gz blackbird-op-linux-67cbf8a216259dceefe570f6dc14746f43b2e627.zip | |
Merge branch 'fix/misc' into topic/misc
Diffstat (limited to 'Documentation/cpu-freq/user-guide.txt')
| -rw-r--r-- | Documentation/cpu-freq/user-guide.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/cpu-freq/user-guide.txt b/Documentation/cpu-freq/user-guide.txt index 2a5b850847c0..04f6b32993e6 100644 --- a/Documentation/cpu-freq/user-guide.txt +++ b/Documentation/cpu-freq/user-guide.txt @@ -203,6 +203,17 @@ scaling_cur_freq : Current frequency of the CPU as determined by the frequency the kernel thinks the CPU runs at. +bios_limit : If the BIOS tells the OS to limit a CPU to + lower frequencies, the user can read out the + maximum available frequency from this file. + This typically can happen through (often not + intended) BIOS settings, restrictions + triggered through a service processor or other + BIOS/HW based implementations. + This does not cover thermal ACPI limitations + which can be detected through the generic + thermal driver. + If you have selected the "userspace" governor which allows you to set the CPU operating frequency to a specific value, you can read out the current frequency in |
