From: elder@linaro.org (Alex Elder)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/5] ARM: SMP: support Broadcom mobile SoCs
Date: Tue, 15 Apr 2014 08:12:49 -0500 [thread overview]
Message-ID: <1397567574-31599-1-git-send-email-elder@linaro.org> (raw)
This series adds SMP support for two Broadcom mobile SoC families.
It uses CPU_METHOD_OF_DECLARE() (or rather a new variant of that)
so that SMP operations are assigned using device tree rather than
adding it to a machine definition in a board file.
The first patch adds the ability to extract information from device
tree nodes having a matching "enable-method" value. This allows
additional parameters to be associated with the enable method. This
is used for the Broadcom SoCs to efficiently determine the location
of a special register used in coordinating the start of secondary
CPUs.
I have not included a device tree document update here; I would like
suggestions on where the new enable method and its parameter should
be documented. (I presume in .../arm/cpus.txt, but that could get
out of hand as more boards define new enable methods.)
-Alex
Note:
This series is based on v3.15-rc1, plus one more recently-posted patch:
http://permalink.gmane.org/gmane.linux.kernel/1683693
History
v2: - Fixed a Makefile error (:= should have been +=)
- No longer set CONFIG_NR_CPUS in bcm_defconfig
- Rebased onto v3.15-rc1
This series is available here:
http://git.linaro.org/landing-teams/working/broadcom/kernel.git
Branch review/bcm-smp-v2
Alex Elder (5):
ARM: introduce CPU_METHOD_OF_DECLARE_SETUP()
ARM: add SMP support for Broadcom mobile SoCs
ARM: configs: enable SMP in bcm_defconfig
ARM: dts: enable SMP support for bcm28155
ARM: dts: enable SMP support for bcm21664
arch/arm/boot/dts/bcm11351.dtsi | 19 ++++
arch/arm/boot/dts/bcm21664.dtsi | 19 ++++
arch/arm/configs/bcm_defconfig | 1 +
arch/arm/include/asm/smp.h | 10 +-
arch/arm/kernel/devtree.c | 31 +++++--
arch/arm/mach-bcm/Kconfig | 18 +++-
arch/arm/mach-bcm/Makefile | 3 +
arch/arm/mach-bcm/platsmp.c | 194 +++++++++++++++++++++++++++++++++++++++
8 files changed, 284 insertions(+), 11 deletions(-)
create mode 100644 arch/arm/mach-bcm/platsmp.c
--
1.7.9.5
next reply other threads:[~2014-04-15 13:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 13:12 Alex Elder [this message]
2014-04-15 13:12 ` [PATCH v2 1/5] ARM: introduce CPU_METHOD_OF_DECLARE_SETUP() Alex Elder
2014-04-15 13:12 ` [PATCH v2 2/5] ARM: add SMP support for Broadcom mobile SoCs Alex Elder
2014-04-15 13:12 ` [PATCH v2 3/5] ARM: configs: enable SMP in bcm_defconfig Alex Elder
2014-04-15 13:12 ` [PATCH v2 4/5] ARM: dts: enable SMP support for bcm28155 Alex Elder
2014-04-15 13:12 ` [PATCH v2 5/5] ARM: dts: enable SMP support for bcm21664 Alex Elder
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