The Exynos5420 cluster power management support allowing Exynos 5420/5422/5800 machines to power up and down the secondary CPUs. Without this option enabled, the secondary CPUs are not brought up on boot and the following error is shown: CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Setting up static identity map for 0x40938e90 - 0x40938f28 ARM CCI driver probed CPU1: failed to boot: -38 CPU2: failed to boot: -38 CPU3: failed to boot: -38 CPU4: failed to boot: -38 CPU5: failed to boot: -38 CPU6: failed to boot: -38 CPU7: failed to boot: -38 Brought up 1 CPUs Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx> --- This patch was tested on an Exynos5420 Peach Pit and with MCPM support enabled, all the 8 CPUs are powered up: Brought up 8 CPUs SMP: Total of 8 processors activated (384.00 BogoMIPS). arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 6e974b6bfa90..e8a4c955241b 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -61,6 +61,7 @@ CONFIG_MACH_SPEAR1310=y CONFIG_MACH_SPEAR1340=y CONFIG_ARCH_STI=y CONFIG_ARCH_EXYNOS=y +CONFIG_EXYNOS5420_MCPM=y CONFIG_ARCH_SUNXI=y CONFIG_ARCH_SIRF=y CONFIG_ARCH_TEGRA=y -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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