From: elder@linaro.org (Alex Elder)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 RESEND 0/5] ARM: SMP: support Broadcom mobile SoCs
Date: Fri, 30 May 2014 17:28:51 -0500 [thread overview]
Message-ID: <1401488936-21186-1-git-send-email-elder@linaro.org> (raw)
This series adds SMP support for two Broadcom mobile SoC families.
It uses CPU_METHOD_OF_DECLARE() so that SMP operations are assigned
using device tree rather than adding it to a machine definition in a
board file.
The enable method starts a secondary core by writing to a register
monitored by CPUs spinning in a ROM-based holding pen loop. The
address of this register is recorded as a property in the "cpus"
node of the device tree.
-Alex
Notes:
- I would prefer to document the binding in a separate file in
the way suggested here:
https://lkml.org/lkml/2014/5/20/559
But for now I'm keeping this independent of that.
- This series is based on v3.15-rc4, plus one more recently-posted patch:
https://lkml.org/lkml/2014/4/15/303
- This series is available here:
http://git.linaro.org/landing-teams/working/broadcom/kernel.git
Branch review/bcm-smp-v4
History
v4: - Renamed "platsmp.c" to be "kona_smp.c".
- Rebased onto v3.15-rc5
v3: - Dropped definition and use of CPU_METHOD_OF_DECLARE_SETUP()
- Added documentation for "enable-method"
- Rebased onto v3.15-rc4
v2: - Fixed a Makefile error (:= should have been +=)
- No longer set CONFIG_NR_CPUS in bcm_defconfig
- Rebased onto v3.15-rc1
Alex Elder (5):
devicetree: bindings: document Broadcom CPU enable method
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
Documentation/devicetree/bindings/arm/cpus.txt | 12 ++
arch/arm/boot/dts/bcm11351.dtsi | 19 +++
arch/arm/boot/dts/bcm21664.dtsi | 19 +++
arch/arm/configs/bcm_defconfig | 1 +
arch/arm/mach-bcm/Kconfig | 18 ++-
arch/arm/mach-bcm/Makefile | 3 +
arch/arm/mach-bcm/kona_smp.c | 202 +++++++++++++++++++++++++
7 files changed, 271 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/mach-bcm/kona_smp.c
--
1.9.1
next reply other threads:[~2014-05-30 22:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-30 22:28 Alex Elder [this message]
2014-05-30 22:28 ` [PATCH v4 RESEND 1/5] devicetree: bindings: document Broadcom CPU enable method Alex Elder
2014-05-30 22:28 ` [PATCH v4 RESEND 2/5] ARM: add SMP support for Broadcom mobile SoCs Alex Elder
2014-05-30 22:28 ` [PATCH v4 RESEND 3/5] ARM: configs: enable SMP in bcm_defconfig Alex Elder
2014-05-30 22:28 ` [PATCH v4 RESEND 4/5] ARM: dts: enable SMP support for bcm28155 Alex Elder
2014-05-30 22:28 ` [PATCH v4 RESEND 5/5] ARM: dts: enable SMP support for bcm21664 Alex Elder
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