linux-kernel - [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 28 Jan 2015 15:40:20 +0100
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	arm@...nel.org
Cc:	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
	Kukjin Kim <kgene@...nel.org>,
	Kevin Hilman <khilman@...aro.org>,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Subject: [PATCH 1/1] ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support

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@...labora.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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/