linux/drivers/cpuidle/Kconfig.mips
Paul Burton d050894435 cpuidle: cpuidle-cps: add MIPS CPS cpuidle driver
This patch adds a cpuidle driver for systems based around the MIPS
Coherent Processing System (CPS) architecture. It supports four idle
states:

  - The standard MIPS wait instruction.

  - The non-coherent wait, clock gated & power gated states exposed by
    the recently added pm-cps layer.

The pm-cps layer is used to enter all the deep idle states. Since cores
in the clock or power gated states cannot service interrupts, the
gic_send_ipi_single function is modified to send a power up command for
the appropriate core to the CPC in cases where the target CPU has marked
itself potentially incoherent.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:36 +01:00

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#
# MIPS CPU Idle Drivers
#
config MIPS_CPS_CPUIDLE
bool "CPU Idle driver for MIPS CPS platforms"
depends on CPU_IDLE
depends on SYS_SUPPORTS_MIPS_CPS
select ARCH_NEEDS_CPU_IDLE_COUPLED if MIPS_MT
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select MIPS_CPS_PM
default y
help
Select this option to enable processor idle state management
through cpuidle for systems built around the MIPS Coherent
Processing System (CPS) architecture. In order to make use of
the deepest idle states you will need to ensure that you are
also using the CONFIG_MIPS_CPS SMP implementation.