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Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-samsung-laptop')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-samsung-laptop | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop new file mode 100644 index 00000000000..0a810231aad --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop @@ -0,0 +1,19 @@ +What: /sys/devices/platform/samsung/performance_level +Date: January 1, 2010 +KernelVersion: 2.6.33 +Contact: Greg Kroah-Hartman <gregkh@suse.de> +Description: Some Samsung laptops have different "performance levels" + that are can be modified by a function key, and by this + sysfs file. These values don't always make a whole lot + of sense, but some users like to modify them to keep + their fans quiet at all costs. Reading from this file + will show the current performance level. Writing to the + file can change this value. + Valid options: + "silent" + "normal" + "overclock" + Note that not all laptops support all of these options. + Specifically, not all support the "overclock" option, + and it's still unknown if this value even changes + anything, other than making the user feel a bit better. |