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| author | Mark Brown <broonie@kernel.org> | 2016-02-22 20:12:13 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-22 20:12:13 +0900 |
| commit | 8174b35f1d9b54b740a935410c7b3891e3e2a119 (patch) | |
| tree | 95427a4dd7248c41547a9a8d4afcfe7aa9a3a9fd /Documentation/usb/power-management.txt | |
| parent | fcde5a7eca1a28d3f7158399809cb01f83bd0114 (diff) | |
| parent | 81f70ba233d5f660e1ea5fe23260ee323af5d53a (diff) | |
| download | linux-8174b35f1d9b54b740a935410c7b3891e3e2a119.tar.bz2 | |
Merge tag 'v4.5-rc5' into asoc-mtk
Linux 4.5-rc5
Diffstat (limited to 'Documentation/usb/power-management.txt')
| -rw-r--r-- | Documentation/usb/power-management.txt | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index 4a15c90bc11d..0a94ffe17ab6 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt @@ -537,17 +537,18 @@ relevant attribute files are usb2_hardware_lpm and usb3_hardware_lpm. can write y/Y/1 or n/N/0 to the file to enable/disable USB2 hardware LPM manually. This is for test purpose mainly. - power/usb3_hardware_lpm + power/usb3_hardware_lpm_u1 + power/usb3_hardware_lpm_u2 When a USB 3.0 lpm-capable device is plugged in to a xHCI host which supports link PM, it will check if U1 and U2 exit latencies have been set in the BOS descriptor; if the check is is passed and the host supports USB3 hardware LPM, USB3 hardware LPM will be - enabled for the device and this file will be created. - The file holds a string value (enable or disable) - indicating whether or not USB3 hardware LPM is - enabled for the device. + enabled for the device and these files will be created. + The files hold a string value (enable or disable) + indicating whether or not USB3 hardware LPM U1 or U2 + is enabled for the device. USB Port Power Control ---------------------- |