tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
27config ARM_PSCI_CPUIDLE_DOMAIN
28 bool "PSCI CPU idle Domain"
29 depends on ARM_PSCI_CPUIDLE
30 depends on PM_GENERIC_DOMAINS_OF
31 select DT_IDLE_GENPD
32 default y
33 help
34 Select this to enable the PSCI based CPUidle driver to use PM domains,
35 which is needed to support the hierarchical DT based layout of the
36 idle states.
37
38config ARM_BIG_LITTLE_CPUIDLE
39 bool "Support for ARM big.LITTLE processors"
40 depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST
41 depends on MCPM && !ARM64
42 select ARM_CPU_SUSPEND
43 select CPU_IDLE_MULTIPLE_DRIVERS
44 select DT_IDLE_STATES
45 help
46 Select this option to enable CPU idle driver for big.LITTLE based
47 ARM systems. Driver manages CPUs coordination through MCPM and
48 define different C-states for little and big cores through the
49 multiple CPU idle drivers infrastructure.
50
51config ARM_CLPS711X_CPUIDLE
52 bool "CPU Idle Driver for CLPS711X processors"
53 depends on ARCH_CLPS711X && !ARM64 || COMPILE_TEST
54 help
55 Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs.
56
57config ARM_HIGHBANK_CPUIDLE
58 bool "CPU Idle Driver for Calxeda processors"
59 depends on ARM_PSCI && !ARM64
60 select ARM_CPU_SUSPEND
61 help
62 Select this to enable cpuidle on Calxeda processors.
63
64config ARM_KIRKWOOD_CPUIDLE
65 bool "CPU Idle Driver for Marvell Kirkwood SoCs"
66 depends on (MACH_KIRKWOOD || COMPILE_TEST) && !ARM64
67 help
68 This adds the CPU Idle driver for Marvell Kirkwood SoCs.
69
70config ARM_ZYNQ_CPUIDLE
71 bool "CPU Idle Driver for Xilinx Zynq processors"
72 depends on (ARCH_ZYNQ || COMPILE_TEST) && !ARM64
73 help
74 Select this to enable cpuidle on Xilinx Zynq processors.
75
76config ARM_U8500_CPUIDLE
77 bool "Cpu Idle Driver for the ST-E u8500 processors"
78 depends on ARCH_U8500 && !ARM64
79 help
80 Select this to enable cpuidle for ST-E u8500 processors.
81
82config ARM_AT91_CPUIDLE
83 bool "Cpu Idle Driver for the AT91 processors"
84 default y
85 depends on (ARCH_AT91 || COMPILE_TEST) && !ARM64
86 help
87 Select this to enable cpuidle for AT91 processors.
88
89config ARM_EXYNOS_CPUIDLE
90 bool "Cpu Idle Driver for the Exynos processors"
91 depends on (ARCH_EXYNOS || COMPILE_TEST) && !ARM64
92 select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
93 help
94 Select this to enable cpuidle for Exynos processors.
95
96config ARM_MVEBU_V7_CPUIDLE
97 bool "CPU Idle Driver for mvebu v7 family processors"
98 depends on (ARCH_MVEBU || COMPILE_TEST) && !ARM64
99 help
100 Select this to enable cpuidle on Armada 370, 38x and XP processors.
101
102config ARM_TEGRA_CPUIDLE
103 bool "CPU Idle Driver for NVIDIA Tegra SoCs"
104 depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU
105 select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
106 select ARM_CPU_SUSPEND
107 help
108 Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs.
109
110config ARM_QCOM_SPM_CPUIDLE
111 bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
112 depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU
113 select ARM_CPU_SUSPEND
114 select CPU_IDLE_MULTIPLE_DRIVERS
115 select DT_IDLE_STATES
116 select QCOM_SCM
117 select QCOM_SPM
118 help
119 Select this to enable cpuidle for Qualcomm processors.
120 The Subsystem Power Manager (SPM) controls low power modes for the
121 CPU and L2 cores. It interface with various system drivers to put
122 the cores in low power modes.