1# SPDX-License-Identifier: GPL-2.0-only
  2#
  3# ARM CPU Idle drivers
  4#
  5config ARM_CPUIDLE
  6	bool "Generic ARM CPU idle Driver"
  7	depends on ARM
  8	select DT_IDLE_STATES
  9	select CPU_IDLE_MULTIPLE_DRIVERS
 10	help
 11	  Select this to enable generic cpuidle driver for ARM.
 12	  It provides a generic idle driver whose idle states are configured
 13	  at run-time through DT nodes. The CPUidle suspend backend is
 14	  initialized by calling the CPU operations init idle hook
 15	  provided by architecture code.
 16
 17config ARM_PSCI_CPUIDLE
 18	bool "PSCI CPU idle Driver"
 19	depends on ARM_PSCI_FW
 20	select DT_IDLE_STATES
 21	select CPU_IDLE_MULTIPLE_DRIVERS
 22	help
 23	  Select this to enable PSCI firmware based CPUidle driver for ARM.
 24	  It provides an idle driver that is capable of detecting and
 25	  managing idle states through the PSCI firmware interface.
 26
 27	  The driver has limitations when used with PREEMPT_RT:
 28	  - If the idle states are described with the non-hierarchical layout,
 29	    all idle states are still available.
 30
 31	  - If the idle states are described with the hierarchical layout,
 32	    only the idle states defined per CPU are available, but not the ones
 33	    being shared among a group of CPUs (aka cluster idle states).
 34
 35config ARM_PSCI_CPUIDLE_DOMAIN
 36	bool "PSCI CPU idle Domain"
 37	depends on ARM_PSCI_CPUIDLE
 38	depends on PM_GENERIC_DOMAINS_OF
 39	select DT_IDLE_GENPD
 40	default y
 41	help
 42	  Select this to enable the PSCI based CPUidle driver to use PM domains,
 43	  which is needed to support the hierarchical DT based layout of the
 44	  idle states.
 45
 46config ARM_BIG_LITTLE_CPUIDLE
 47	bool "Support for ARM big.LITTLE processors"
 48	depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST
 49	depends on MCPM && !ARM64
 50	select ARM_CPU_SUSPEND
 51	select CPU_IDLE_MULTIPLE_DRIVERS
 52	select DT_IDLE_STATES
 53	help
 54	  Select this option to enable CPU idle driver for big.LITTLE based
 55	  ARM systems. Driver manages CPUs coordination through MCPM and
 56	  define different C-states for little and big cores through the
 57	  multiple CPU idle drivers infrastructure.
 58
 59config ARM_CLPS711X_CPUIDLE
 60	bool "CPU Idle Driver for CLPS711X processors"
 61	depends on ARCH_CLPS711X && !ARM64 || COMPILE_TEST
 62	help
 63	  Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs.
 64
 65config ARM_HIGHBANK_CPUIDLE
 66	bool "CPU Idle Driver for Calxeda processors"
 67	depends on ARM_PSCI && !ARM64
 68	select ARM_CPU_SUSPEND
 69	help
 70	  Select this to enable cpuidle on Calxeda processors.
 71
 72config ARM_KIRKWOOD_CPUIDLE
 73	bool "CPU Idle Driver for Marvell Kirkwood SoCs"
 74	depends on (MACH_KIRKWOOD || COMPILE_TEST) && !ARM64
 75	help
 76	  This adds the CPU Idle driver for Marvell Kirkwood SoCs.
 77
 78config ARM_ZYNQ_CPUIDLE
 79	bool "CPU Idle Driver for Xilinx Zynq processors"
 80	depends on (ARCH_ZYNQ || COMPILE_TEST) && !ARM64
 81	help
 82	  Select this to enable cpuidle on Xilinx Zynq processors.
 83
 84config ARM_U8500_CPUIDLE
 85	bool "Cpu Idle Driver for the ST-E u8500 processors"
 86	depends on ARCH_U8500 && !ARM64
 87	help
 88	  Select this to enable cpuidle for ST-E u8500 processors.
 89
 90config ARM_AT91_CPUIDLE
 91	bool "Cpu Idle Driver for the AT91 processors"
 92	default y
 93	depends on (ARCH_AT91 || COMPILE_TEST) && !ARM64
 94	help
 95	  Select this to enable cpuidle for AT91 processors.
 96
 97config ARM_EXYNOS_CPUIDLE
 98	bool "Cpu Idle Driver for the Exynos processors"
 99	depends on (ARCH_EXYNOS || COMPILE_TEST) && !ARM64
100	select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
101	help
102	  Select this to enable cpuidle for Exynos processors.
103
104config ARM_MVEBU_V7_CPUIDLE
105	bool "CPU Idle Driver for mvebu v7 family processors"
106	depends on (ARCH_MVEBU || COMPILE_TEST) && !ARM64
107	help
108	  Select this to enable cpuidle on Armada 370, 38x and XP processors.
109
110config ARM_TEGRA_CPUIDLE
111	bool "CPU Idle Driver for NVIDIA Tegra SoCs"
112	depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU
113	depends on ARCH_SUSPEND_POSSIBLE
114	select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
115	select ARM_CPU_SUSPEND
116	help
117	  Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs.
118
119config ARM_QCOM_SPM_CPUIDLE
120	bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
121	depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU
122	depends on ARCH_SUSPEND_POSSIBLE
123	select ARM_CPU_SUSPEND
124	select CPU_IDLE_MULTIPLE_DRIVERS
125	select DT_IDLE_STATES
126	select QCOM_SCM
127	select QCOM_SPM
128	help
129	  Select this to enable cpuidle for Qualcomm processors.
130	  The Subsystem Power Manager (SPM) controls low power modes for the
131	  CPU and L2 cores. It interface with various system drivers to put
132	  the cores in low power modes.

  1# SPDX-License-Identifier: GPL-2.0-only
  2#
  3# ARM CPU Idle drivers
  4#
  5config ARM_CPUIDLE
  6	bool "Generic ARM/ARM64 CPU idle Driver"
 
  7	select DT_IDLE_STATES
  8	select CPU_IDLE_MULTIPLE_DRIVERS
  9	help
 10	  Select this to enable generic cpuidle driver for ARM.
 11	  It provides a generic idle driver whose idle states are configured
 12	  at run-time through DT nodes. The CPUidle suspend backend is
 13	  initialized by calling the CPU operations init idle hook
 14	  provided by architecture code.
 15
 16config ARM_PSCI_CPUIDLE
 17	bool "PSCI CPU idle Driver"
 18	depends on ARM_PSCI_FW
 19	select DT_IDLE_STATES
 20	select CPU_IDLE_MULTIPLE_DRIVERS
 21	help
 22	  Select this to enable PSCI firmware based CPUidle driver for ARM.
 23	  It provides an idle driver that is capable of detecting and
 24	  managing idle states through the PSCI firmware interface.
 25
 
 
 
 
 
 
 
 
 26config ARM_PSCI_CPUIDLE_DOMAIN
 27	bool "PSCI CPU idle Domain"
 28	depends on ARM_PSCI_CPUIDLE
 29	depends on PM_GENERIC_DOMAINS_OF
 
 30	default y
 31	help
 32	  Select this to enable the PSCI based CPUidle driver to use PM domains,
 33	  which is needed to support the hierarchical DT based layout of the
 34	  idle states.
 35
 36config ARM_BIG_LITTLE_CPUIDLE
 37	bool "Support for ARM big.LITTLE processors"
 38	depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST
 39	depends on MCPM && !ARM64
 40	select ARM_CPU_SUSPEND
 41	select CPU_IDLE_MULTIPLE_DRIVERS
 42	select DT_IDLE_STATES
 43	help
 44	  Select this option to enable CPU idle driver for big.LITTLE based
 45	  ARM systems. Driver manages CPUs coordination through MCPM and
 46	  define different C-states for little and big cores through the
 47	  multiple CPU idle drivers infrastructure.
 48
 49config ARM_CLPS711X_CPUIDLE
 50	bool "CPU Idle Driver for CLPS711X processors"
 51	depends on ARCH_CLPS711X && !ARM64 || COMPILE_TEST
 52	help
 53	  Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs.
 54
 55config ARM_HIGHBANK_CPUIDLE
 56	bool "CPU Idle Driver for Calxeda processors"
 57	depends on ARM_PSCI && !ARM64
 58	select ARM_CPU_SUSPEND
 59	help
 60	  Select this to enable cpuidle on Calxeda processors.
 61
 62config ARM_KIRKWOOD_CPUIDLE
 63	bool "CPU Idle Driver for Marvell Kirkwood SoCs"
 64	depends on (MACH_KIRKWOOD || COMPILE_TEST) && !ARM64
 65	help
 66	  This adds the CPU Idle driver for Marvell Kirkwood SoCs.
 67
 68config ARM_ZYNQ_CPUIDLE
 69	bool "CPU Idle Driver for Xilinx Zynq processors"
 70	depends on (ARCH_ZYNQ || COMPILE_TEST) && !ARM64
 71	help
 72	  Select this to enable cpuidle on Xilinx Zynq processors.
 73
 74config ARM_U8500_CPUIDLE
 75	bool "Cpu Idle Driver for the ST-E u8500 processors"
 76	depends on ARCH_U8500 && !ARM64
 77	help
 78	  Select this to enable cpuidle for ST-E u8500 processors.
 79
 80config ARM_AT91_CPUIDLE
 81	bool "Cpu Idle Driver for the AT91 processors"
 82	default y
 83	depends on (ARCH_AT91 || COMPILE_TEST) && !ARM64
 84	help
 85	  Select this to enable cpuidle for AT91 processors.
 86
 87config ARM_EXYNOS_CPUIDLE
 88	bool "Cpu Idle Driver for the Exynos processors"
 89	depends on (ARCH_EXYNOS || COMPILE_TEST) && !ARM64
 90	select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
 91	help
 92	  Select this to enable cpuidle for Exynos processors.
 93
 94config ARM_MVEBU_V7_CPUIDLE
 95	bool "CPU Idle Driver for mvebu v7 family processors"
 96	depends on (ARCH_MVEBU || COMPILE_TEST) && !ARM64
 97	help
 98	  Select this to enable cpuidle on Armada 370, 38x and XP processors.
 99
100config ARM_TEGRA_CPUIDLE
101	bool "CPU Idle Driver for NVIDIA Tegra SoCs"
102	depends on ARCH_TEGRA && !ARM64
 
103	select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
104	select ARM_CPU_SUSPEND
105	help
106	  Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs.
107
108config ARM_QCOM_SPM_CPUIDLE
109	bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
110	depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64
 
111	select ARM_CPU_SUSPEND
112	select CPU_IDLE_MULTIPLE_DRIVERS
113	select DT_IDLE_STATES
114	select QCOM_SCM
 
115	help
116	  Select this to enable cpuidle for Qualcomm processors.
117	  The Subsystem Power Manager (SPM) controls low power modes for the
118	  CPU and L2 cores. It interface with various system drivers to put
119	  the cores in low power modes.