€•ö      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ,/translations/zh_CN/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/zh_TW/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/it_IT/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/ja_JP/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/ko_KR/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ,/translations/sp_SP/firmware-guide/acpi/lpit”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒF/var/lib/git/docbuild/linux/Documentation/firmware-guide/acpi/lpit.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒLow Power Idle Table (LPIT)”h]”hŒLow Power Idle Table (LPIT)”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ	paragraph”“”)”}”(hŒóTo enumerate platform Low Power Idle states, Intel platforms are using
â€œLow Power Idle Tableâ€ (LPIT). More details about this table can be
downloaded from:
https://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf”h]”(hŒ To enumerate platform Low Power Idle states, Intel platforms are using
â€œLow Power Idle Tableâ€ (LPIT). More details about this table can be
downloaded from:
”…””}”(hhËhžhhŸNh NubhŒ	reference”“”)”}”(hŒShttps://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf”h]”hŒShttps://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf”…””}”(hhÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”h×uh1hÓhhËubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒpResidencies for each low power state can be read via FFH
(Function fixed hardware) or a memory mapped interface.”h]”hŒpResidencies for each low power state can be read via FFH
(Function fixed hardware) or a memory mapped interface.”…””}”(hhêhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒQOn platforms supporting S0ix sleep states, there can be two types of
residencies:”h]”hŒQOn platforms supporting S0ix sleep states, there can be two types of
residencies:”…””}”(hhøhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhŒblock_quote”“”)”}”(hŒq- CPU PKG C10 (Read via FFH interface)
- Platform Controller Hub (PCH) SLP_S0 (Read via memory mapped interface)
”h]”hŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒ$CPU PKG C10 (Read via FFH interface)”h]”hÊ)”}”(hj  h]”hŒ$CPU PKG C10 (Read via FFH interface)”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  ubj  )”}”(hŒHPlatform Controller Hub (PCH) SLP_S0 (Read via memory mapped interface)
”h]”hÊ)”}”(hŒGPlatform Controller Hub (PCH) SLP_S0 (Read via memory mapped interface)”h]”hŒGPlatform Controller Hub (PCH) SLP_S0 (Read via memory mapped interface)”…””}”(hj.  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj*  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1j  hŸh³h Khj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hŸh³h Khh¶hžhubhÊ)”}”(hŒUThe following attributes are added dynamically to the cpuidle
sysfs attribute group::”h]”hŒTThe following attributes are added dynamically to the cpuidle
sysfs attribute group:”…””}”(hjP  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhŒliteral_block”“”)”}”(hŒ‚/sys/devices/system/cpu/cpuidle/low_power_idle_cpu_residency_us
/sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us”h]”hŒ‚/sys/devices/system/cpu/cpuidle/low_power_idle_cpu_residency_us
/sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us”…””}”hj`  sbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1j^  hŸh³h Khh¶hžhubhÊ)”}”(hŒ^The "low_power_idle_cpu_residency_us" attribute shows time spent
by the CPU package in PKG C10”h]”hŒbThe â€œlow_power_idle_cpu_residency_usâ€ attribute shows time spent
by the CPU package in PKG C10”…””}”(hjn  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hX  The "low_power_idle_system_residency_us" attribute shows SLP_S0
residency, or system time spent with the SLP_S0# signal asserted.
This is the lowest possible system power state, achieved only when CPU is in
PKG C10 and all functional blocks in PCH are in a low power state.”h]”hX  The â€œlow_power_idle_system_residency_usâ€ attribute shows SLP_S0
residency, or system time spent with the SLP_S0# signal asserted.
This is the lowest possible system power state, achieved only when CPU is in
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id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
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