| # SPDX-License-Identifier: GPL-2.0-only | |
| # | |
| # ARM CPU Idle drivers | |
| # | |
| config ARM_CPUIDLE | |
| bool "Generic ARM CPU idle Driver" | |
| depends on ARM | |
| select DT_IDLE_STATES | |
| select CPU_IDLE_MULTIPLE_DRIVERS | |
| help | |
| Select this to enable generic cpuidle driver for ARM. | |
| It provides a generic idle driver whose idle states are configured | |
| at run-time through DT nodes. The CPUidle suspend backend is | |
| initialized by calling the CPU operations init idle hook | |
| provided by architecture code. | |
| config ARM_PSCI_CPUIDLE | |
| bool "PSCI CPU idle Driver" | |
| depends on ARM_PSCI_FW | |
| select DT_IDLE_STATES | |
| select CPU_IDLE_MULTIPLE_DRIVERS | |
| help | |
| Select this to enable PSCI firmware based CPUidle driver for ARM. | |
| It provides an idle driver that is capable of detecting and | |
| managing idle states through the PSCI firmware interface. | |
| The driver has limitations when used with PREEMPT_RT: | |
| - If the idle states are described with the non-hierarchical layout, | |
| all idle states are still available. | |
| - If the idle states are described with the hierarchical layout, | |
| only the idle states defined per CPU are available, but not the ones | |
| being shared among a group of CPUs (aka cluster idle states). | |
| config ARM_PSCI_CPUIDLE_DOMAIN | |
| bool "PSCI CPU idle Domain" | |
| depends on ARM_PSCI_CPUIDLE | |
| depends on PM_GENERIC_DOMAINS_OF | |
| select DT_IDLE_GENPD | |
| default y | |
| help | |
| Select this to enable the PSCI based CPUidle driver to use PM domains, | |
| which is needed to support the hierarchical DT based layout of the | |
| idle states. | |
| config ARM_BIG_LITTLE_CPUIDLE | |
| bool "Support for ARM big.LITTLE processors" | |
| depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST | |
| depends on MCPM && !ARM64 | |
| select ARM_CPU_SUSPEND | |
| select CPU_IDLE_MULTIPLE_DRIVERS | |
| select DT_IDLE_STATES | |
| help | |
| Select this option to enable CPU idle driver for big.LITTLE based | |
| ARM systems. Driver manages CPUs coordination through MCPM and | |
| define different C-states for little and big cores through the | |
| multiple CPU idle drivers infrastructure. | |
| config ARM_CLPS711X_CPUIDLE | |
| bool "CPU Idle Driver for CLPS711X processors" | |
| depends on ARCH_CLPS711X && !ARM64 || COMPILE_TEST | |
| help | |
| Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs. | |
| config ARM_HIGHBANK_CPUIDLE | |
| bool "CPU Idle Driver for Calxeda processors" | |
| depends on ARM_PSCI && !ARM64 | |
| select ARM_CPU_SUSPEND | |
| help | |
| Select this to enable cpuidle on Calxeda processors. | |
| config ARM_KIRKWOOD_CPUIDLE | |
| bool "CPU Idle Driver for Marvell Kirkwood SoCs" | |
| depends on (MACH_KIRKWOOD || COMPILE_TEST) && !ARM64 | |
| help | |
| This adds the CPU Idle driver for Marvell Kirkwood SoCs. | |
| config ARM_ZYNQ_CPUIDLE | |
| bool "CPU Idle Driver for Xilinx Zynq processors" | |
| depends on (ARCH_ZYNQ || COMPILE_TEST) && !ARM64 | |
| help | |
| Select this to enable cpuidle on Xilinx Zynq processors. | |
| config ARM_U8500_CPUIDLE | |
| bool "Cpu Idle Driver for the ST-E u8500 processors" | |
| depends on ARCH_U8500 && !ARM64 | |
| help | |
| Select this to enable cpuidle for ST-E u8500 processors. | |
| config ARM_AT91_CPUIDLE | |
| bool "Cpu Idle Driver for the AT91 processors" | |
| default y | |
| depends on (ARCH_AT91 || COMPILE_TEST) && !ARM64 | |
| help | |
| Select this to enable cpuidle for AT91 processors. | |
| config ARM_EXYNOS_CPUIDLE | |
| bool "Cpu Idle Driver for the Exynos processors" | |
| depends on (ARCH_EXYNOS || COMPILE_TEST) && !ARM64 | |
| select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP | |
| help | |
| Select this to enable cpuidle for Exynos processors. | |
| config ARM_MVEBU_V7_CPUIDLE | |
| bool "CPU Idle Driver for mvebu v7 family processors" | |
| depends on (ARCH_MVEBU || COMPILE_TEST) && !ARM64 | |
| help | |
| Select this to enable cpuidle on Armada 370, 38x and XP processors. | |
| config ARM_TEGRA_CPUIDLE | |
| bool "CPU Idle Driver for NVIDIA Tegra SoCs" | |
| depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU | |
| depends on ARCH_SUSPEND_POSSIBLE | |
| select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP | |
| select ARM_CPU_SUSPEND | |
| help | |
| Select this to enable cpuidle for NVIDIA Tegra20/30/114/124 SoCs. | |
| config ARM_QCOM_SPM_CPUIDLE | |
| bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)" | |
| depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU | |
| depends on ARCH_SUSPEND_POSSIBLE | |
| select ARM_CPU_SUSPEND | |
| select CPU_IDLE_MULTIPLE_DRIVERS | |
| select DT_IDLE_STATES | |
| select QCOM_SCM | |
| select QCOM_SPM | |
| help | |
| Select this to enable cpuidle for Qualcomm processors. | |
| The Subsystem Power Manager (SPM) controls low power modes for the | |
| CPU and L2 cores. It interface with various system drivers to put | |
| the cores in low power modes. |