18c2ecf20Sopenharmony_ciWhat: /sys/devices/.../lpss_ltr/ 28c2ecf20Sopenharmony_ciDate: March 2013 38c2ecf20Sopenharmony_ciContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 48c2ecf20Sopenharmony_ciDescription: 58c2ecf20Sopenharmony_ci The /sys/devices/.../lpss_ltr/ directory is only present for 68c2ecf20Sopenharmony_ci devices included into the Intel Lynxpoint Low Power Subsystem 78c2ecf20Sopenharmony_ci (LPSS). If present, it contains attributes containing the LTR 88c2ecf20Sopenharmony_ci mode and the values of LTR registers of the device. 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciWhat: /sys/devices/.../lpss_ltr/ltr_mode 118c2ecf20Sopenharmony_ciDate: March 2013 128c2ecf20Sopenharmony_ciContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 138c2ecf20Sopenharmony_ciDescription: 148c2ecf20Sopenharmony_ci The /sys/devices/.../lpss_ltr/ltr_mode attribute contains an 158c2ecf20Sopenharmony_ci integer number (0 or 1) indicating whether or not the devices' 168c2ecf20Sopenharmony_ci LTR functionality is working in the software mode (1). 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci This attribute is read-only. If the device's runtime PM status 198c2ecf20Sopenharmony_ci is not "active", attempts to read from this attribute cause 208c2ecf20Sopenharmony_ci -EAGAIN to be returned. 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ciWhat: /sys/devices/.../lpss_ltr/auto_ltr 238c2ecf20Sopenharmony_ciDate: March 2013 248c2ecf20Sopenharmony_ciContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 258c2ecf20Sopenharmony_ciDescription: 268c2ecf20Sopenharmony_ci The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the 278c2ecf20Sopenharmony_ci current value of the device's AUTO_LTR register (raw) 288c2ecf20Sopenharmony_ci represented as an 8-digit hexadecimal number. 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci This attribute is read-only. If the device's runtime PM status 318c2ecf20Sopenharmony_ci is not "active", attempts to read from this attribute cause 328c2ecf20Sopenharmony_ci -EAGAIN to be returned. 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ciWhat: /sys/devices/.../lpss_ltr/sw_ltr 358c2ecf20Sopenharmony_ciDate: March 2013 368c2ecf20Sopenharmony_ciContact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 378c2ecf20Sopenharmony_ciDescription: 388c2ecf20Sopenharmony_ci The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the 398c2ecf20Sopenharmony_ci current value of the device's SW_LTR register (raw) represented 408c2ecf20Sopenharmony_ci as an 8-digit hexadecimal number. 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci This attribute is read-only. If the device's runtime PM status 438c2ecf20Sopenharmony_ci is not "active", attempts to read from this attribute cause 448c2ecf20Sopenharmony_ci -EAGAIN to be returned. 45