From: shawn.guo@linaro.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 00/10] Support imx6q WAIT mode with coupled cpuidle
Date: Tue, 23 Oct 2012 23:22:49 +0800 [thread overview]
Message-ID: <1351005779-30347-1-git-send-email-shawn.guo@linaro.org> (raw)
The imx6q has a low power mode named WAIT. When all cores are in WFI,
imx6q will go into WAIT mode, and whenever there is a wakeup interrupt,
it will exit WAIT mode. Software can configure hardware behavior during
WAIT mode, clock gating or power gating for ARM core.
The series implements ARM clock gating and power gating in WAIT mode
as two coupled cpuidle states, wait and srpg. Though imx6q hardware
already handles sequencing, the voting provided by coupled cpuidle is
still quite useful, which will allow the system to at least get into
clock gating when one cpu wants clock gating and the other wants power
gating.
Patches 1 ~ 9 make necessary code changes to prepare for WAIT mode
enabling, and the last patch enables the feature eventually.
As WAIT mode is broken on TO1.0 silicon, the feature is only provided
for revisions later than TO1.0.
Shawn Guo (10):
ARM: imx6q: print silicon version on boot
ARM: imx: allow timer counter to roll over
ARM: imx6q: select ARM and PL310 errata
ARM: imx: initialize cpu power up counters
ARM: imx: mask gpc interrupts initially
ARM: imx6q: prepare imx6q_set_lpm for cpudile support
ARM: imx6q: get v7_cpu_resume ready for cpuidle
ARM: imx: move imx6q_cpuidle_driver into a separate file
ARM: SMP: add function arch_send_wakeup_ipi_mask()
ARM: imx6q: implement WAIT mode with coupled cpuidle
arch/arm/include/asm/smp.h | 1 +
arch/arm/kernel/smp.c | 5 ++
arch/arm/mach-imx/Kconfig | 9 ++
arch/arm/mach-imx/Makefile | 6 +-
arch/arm/mach-imx/clk-imx6q.c | 32 +++++--
arch/arm/mach-imx/common.h | 6 +-
arch/arm/mach-imx/cpuidle-imx6q.c | 177 +++++++++++++++++++++++++++++++++++++
arch/arm/mach-imx/cpuidle.c | 3 +
arch/arm/mach-imx/cpuidle.h | 5 ++
arch/arm/mach-imx/gpc.c | 20 +++--
arch/arm/mach-imx/headsmp.S | 81 ++++++++++++++++-
arch/arm/mach-imx/mach-imx6q.c | 45 +++++++---
arch/arm/mach-imx/platsmp.c | 26 ++++--
arch/arm/mach-imx/pm-imx6q.c | 1 -
arch/arm/mach-imx/time.c | 6 +-
15 files changed, 384 insertions(+), 39 deletions(-)
create mode 100644 arch/arm/mach-imx/cpuidle-imx6q.c
--
1.7.9.5
next reply other threads:[~2012-10-23 15:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-23 15:22 Shawn Guo [this message]
2012-10-23 15:22 ` [PATCH 01/10] ARM: imx6q: print silicon version on boot Shawn Guo
2012-11-15 18:09 ` Moseley, Drew
2012-11-16 2:23 ` Shawn Guo
2012-11-16 6:25 ` Dirk Behme
2012-11-16 6:54 ` Shawn Guo
2012-11-16 6:39 ` Shawn Guo
2012-10-23 15:22 ` [PATCH 02/10] ARM: imx: allow timer counter to roll over Shawn Guo
2012-10-23 15:22 ` [PATCH 03/10] ARM: imx6q: select ARM and PL310 errata Shawn Guo
2013-11-28 12:44 ` Dirk Behme
2013-11-29 2:10 ` Shawn Guo
2012-10-23 15:22 ` [PATCH 04/10] ARM: imx: initialize cpu power up counters Shawn Guo
2012-10-23 15:22 ` [PATCH 05/10] ARM: imx: mask gpc interrupts initially Shawn Guo
2012-10-23 15:22 ` [PATCH 06/10] ARM: imx6q: prepare imx6q_set_lpm for cpudile support Shawn Guo
2012-10-23 15:22 ` [PATCH 07/10] ARM: imx6q: get v7_cpu_resume ready for cpuidle Shawn Guo
2012-10-23 15:22 ` [PATCH 08/10] ARM: imx: move imx6q_cpuidle_driver into a separate file Shawn Guo
2012-10-23 15:22 ` [PATCH 09/10] ARM: SMP: add function arch_send_wakeup_ipi_mask() Shawn Guo
2012-10-31 3:43 ` Shawn Guo
2012-11-02 13:42 ` Shawn Guo
2012-11-06 3:18 ` Shawn Guo
2012-10-23 15:22 ` [PATCH 10/10] ARM: imx6q: implement WAIT mode with coupled cpuidle Shawn Guo
2012-10-23 16:09 ` Lee Robert-B18647
2012-10-24 14:04 ` Shawn Guo
2012-10-23 17:35 ` Lorenzo Pieralisi
2012-10-24 13:57 ` Shawn Guo
2012-10-24 15:29 ` Lorenzo Pieralisi
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