From: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
To: arm@kernel.org
Cc: Olof Johansson <olof@lixom.net>, Arnd Bergmann <arnd@arndb.de>,
Kukjin Kim <kgene@kernel.org>, Kevin Hilman <khilman@linaro.org>,
linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Subject: [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support
Date: Wed, 28 Jan 2015 15:40:20 +0100 [thread overview]
Message-ID: <1422456020-10975-1-git-send-email-javier.martinez@collabora.co.uk> (raw)
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
next reply other threads:[~2015-01-28 20:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-28 14:40 Javier Martinez Canillas [this message]
2015-01-28 22:59 ` Olof Johansson
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