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Commit | Line | Data |
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2e0f8822 RW |
1 | What: /sys/devices/.../lpss_ltr/ |
2 | Date: March 2013 | |
3 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
4 | Description: | |
5 | The /sys/devices/.../lpss_ltr/ directory is only present for | |
6 | devices included into the Intel Lynxpoint Low Power Subsystem | |
7 | (LPSS). If present, it contains attributes containing the LTR | |
8 | mode and the values of LTR registers of the device. | |
9 | ||
10 | What: /sys/devices/.../lpss_ltr/ltr_mode | |
11 | Date: March 2013 | |
12 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
13 | Description: | |
14 | The /sys/devices/.../lpss_ltr/ltr_mode attribute contains an | |
15 | integer number (0 or 1) indicating whether or not the devices' | |
16 | LTR functionality is working in the software mode (1). | |
17 | ||
18 | This attribute is read-only. If the device's runtime PM status | |
19 | is not "active", attempts to read from this attribute cause | |
20 | -EAGAIN to be returned. | |
21 | ||
22 | What: /sys/devices/.../lpss_ltr/auto_ltr | |
23 | Date: March 2013 | |
24 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
25 | Description: | |
26 | The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the | |
27 | current value of the device's AUTO_LTR register (raw) | |
28 | represented as an 8-digit hexadecimal number. | |
29 | ||
30 | This attribute is read-only. If the device's runtime PM status | |
31 | is not "active", attempts to read from this attribute cause | |
32 | -EAGAIN to be returned. | |
33 | ||
34 | What: /sys/devices/.../lpss_ltr/sw_ltr | |
35 | Date: March 2013 | |
36 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
37 | Description: | |
38 | The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the | |
39 | current value of the device's SW_LTR register (raw) represented | |
40 | as an 8-digit hexadecimal number. | |
41 | ||
42 | This attribute is read-only. If the device's runtime PM status | |
43 | is not "active", attempts to read from this attribute cause | |
44 | -EAGAIN to be returned. |