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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /Documentation/ABI/testing/sysfs-devices-lpss_ltr | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-lpss_ltr')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-lpss_ltr | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-lpss_ltr b/Documentation/ABI/testing/sysfs-devices-lpss_ltr new file mode 100644 index 000000000..ea9298d9b --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-lpss_ltr @@ -0,0 +1,44 @@ +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. |