Messages in this thread | | | From | Alex Elder <> | Subject | [PATCH v4 0/5] ARM: SMP: support Broadcom mobile SoCs | Date | Tue, 20 May 2014 12:43:45 -0500 |
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[Trouble posting patches today. I'm very sorry about the duplicates.]
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
Note: This series is based on v3.15-rc4, plus one more recently-posted patch: http://permalink.gmane.org/gmane.linux.kernel/1683693
History v3: - 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
This series is available here: http://git.linaro.org/landing-teams/working/broadcom/kernel.git Branch review/bcm-smp-v4
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
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