45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
|
What: /sys/devices/.../lpss_ltr/
|
||
|
|
Date: March 2013
|
||
|
|
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
|
Description:
|
||
|
|
The /sys/devices/.../lpss_ltr/ directory is only present for
|
||
|
|
devices included into the Intel Lynxpoint Low Power Subsystem
|
||
|
|
(LPSS). If present, it contains attributes containing the LTR
|
||
|
|
mode and the values of LTR registers of the device.
|
||
|
|
|
||
|
|
What: /sys/devices/.../lpss_ltr/ltr_mode
|
||
|
|
Date: March 2013
|
||
|
|
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
|
Description:
|
||
|
|
The /sys/devices/.../lpss_ltr/ltr_mode attribute contains an
|
||
|
|
integer number (0 or 1) indicating whether or not the devices'
|
||
|
|
LTR functionality is working in the software mode (1).
|
||
|
|
|
||
|
|
This attribute is read-only. If the device's runtime PM status
|
||
|
|
is not "active", attempts to read from this attribute cause
|
||
|
|
-EAGAIN to be returned.
|
||
|
|
|
||
|
|
What: /sys/devices/.../lpss_ltr/auto_ltr
|
||
|
|
Date: March 2013
|
||
|
|
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
|
Description:
|
||
|
|
The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the
|
||
|
|
current value of the device's AUTO_LTR register (raw)
|
||
|
|
represented as an 8-digit hexadecimal number.
|
||
|
|
|
||
|
|
This attribute is read-only. If the device's runtime PM status
|
||
|
|
is not "active", attempts to read from this attribute cause
|
||
|
|
-EAGAIN to be returned.
|
||
|
|
|
||
|
|
What: /sys/devices/.../lpss_ltr/sw_ltr
|
||
|
|
Date: March 2013
|
||
|
|
Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
|
Description:
|
||
|
|
The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the
|
||
|
|
current value of the device's SW_LTR register (raw) represented
|
||
|
|
as an 8-digit hexadecimal number.
|
||
|
|
|
||
|
|
This attribute is read-only. If the device's runtime PM status
|
||
|
|
is not "active", attempts to read from this attribute cause
|
||
|
|
-EAGAIN to be returned.
|