| From: |
| Alex Elder <elder@linaro.org> |
| To: |
| mporter@linaro.org, bcm@fixthebug.org, linux@arm.linux.org.uk, devicetree@vger.kernel.org, arnd@arndb.de, sboyd@codeaurora.org |
| Subject: |
| [PATCH v3 0/5] ARM: SMP: support Broadcom mobile SoCs |
| Date: |
| Tue, 6 May 2014 17:18:28 -0500 |
| Message-ID: |
| <1399414713-19206-1-git-send-email-elder@linaro.org> |
| Cc: |
| bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org |
| Archive‑link: | |
Article |
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: - 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/kern...
Branch review/bcm-smp-v3
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/platsmp.c | 201 +++++++++++++++++++++++++
7 files changed, 270 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/mach-bcm/platsmp.c
--
1.9.1
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