* [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support
@ 2015-01-28 14:40 Javier Martinez Canillas
2015-01-28 22:59 ` Olof Johansson
0 siblings, 1 reply; 2+ messages in thread
From: Javier Martinez Canillas @ 2015-01-28 14:40 UTC (permalink / raw)
To: arm
Cc: Olof Johansson, Arnd Bergmann, Kukjin Kim, Kevin Hilman,
linux-samsung-soc, linux-arm-kernel, linux-kernel,
Javier Martinez Canillas
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@collabora.co.uk>
---
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support
2015-01-28 14:40 [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support Javier Martinez Canillas
@ 2015-01-28 22:59 ` Olof Johansson
0 siblings, 0 replies; 2+ messages in thread
From: Olof Johansson @ 2015-01-28 22:59 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: arm, Arnd Bergmann, Kukjin Kim, Kevin Hilman, linux-samsung-soc,
linux-arm-kernel, linux-kernel
On Wed, Jan 28, 2015 at 03:40:20PM +0100, Javier Martinez Canillas wrote:
> 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@collabora.co.uk>
Applied, thanks.
-Olof
^ permalink raw reply [flat|nested] 2+ messages in thread
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