| From: |
| Alex Elder <elder-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> |
| To: |
| mporter-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, bcm-xK7y4jjYLqYh9ZMKESR00Q@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org |
| Subject: |
| [PATCH v2 0/5] ARM: SMP: support Broadcom mobile SoCs |
| Date: |
| Tue, 15 Apr 2014 08:12:49 -0500 |
| Message-ID: |
| <1397567574-31599-1-git-send-email-elder@linaro.org> |
| Cc: |
| bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org |
| Archive‑link: | |
Article |
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/kern...
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
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