[PATCH v5 0/5] ARM: SMP: support Broadcom mobile SoCs

From: Alex Elder
Date: Mon Jun 16 2014 - 15:39:34 EST


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 v3.16-rc1, plus two recently-posted patches:
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/264012.html
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/264024.html
- This series is available here:
http://git.linaro.org/landing-teams/working/broadcom/kernel.git
Branch review/bcm-smp-v5

History
v5: - No real change; rebased onto v3.16-rc1.
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

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