mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 15:13:55 +08:00
712eddf702
The following patch adds coupled cpuidle support for Exynos4210 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos4210 without the need to hot unplug CPU1 first. The patch is heavily based on earlier cpuidle-exynos4210 driver from Daniel Lezcano: http://www.spinics.net/lists/linux-samsung-soc/msg28134.html Changes from Daniel's code include: - porting code to current kernels - fixing it to work on my setup (by using S5P_INFORM register instead of S5P_VA_SYSRAM one on Revison 1.1 and retrying poking CPU1 out of the BOOT ROM if necessary) - fixing rare lockup caused by waiting for CPU1 to get stuck in the BOOT ROM (CPU hotplug code in arch/arm/mach-exynos/platsmp.c doesn't require this and works fine) - moving Exynos specific code to arch/arm/mach-exynos/pm.c - using cpu_boot_reg_base() helper instead of BOOT_VECTOR macro - using exynos_cpu_*() helpers instead of accessing registers directly - using arch_send_wakeup_ipi_mask() instead of dsb_sev() (this matches CPU hotplug code in arch/arm/mach-exynos/platsmp.c) - integrating separate exynos4210-cpuidle driver into existing exynos-cpuidle one Cc: Colin Cross <ccross@google.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
#
|
|
# ARM CPU Idle drivers
|
|
#
|
|
config ARM_BIG_LITTLE_CPUIDLE
|
|
bool "Support for ARM big.LITTLE processors"
|
|
depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS
|
|
depends on MCPM
|
|
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 || 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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
help
|
|
Select this to enable cpuidle on Armada 370, 38x and XP processors.
|