From: Wenyou Yang <wenyou.yang@atmel.com>
To: Nicolas Ferre <nicolas.ferre@atmel.com>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Russell King <linux@arm.linux.org.uk>
Cc: linux-clk@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Pawel Moll <pawel.moll@arm.com>, Mark Brown <broonie@kernel.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
Wenyou Yang <wenyou.yang@atmel.com>
Subject: [PATCH 0/4] ARM: at91: pm: add ULP1 mode support
Date: Thu, 28 Jan 2016 18:19:12 +0800 [thread overview]
Message-ID: <1453976356-24391-1-git-send-email-wenyou.yang@atmel.com> (raw)
The ULP1 (Ultra Low-power mode 1) is introduced by SAMA5D2.
In order to achieve the lowest power consumption, in the ULP1 mode,
all the clocks are shut off, inclusive the embedded 12MHz RC oscillator.
The fast startup signal is used as a wake up source for ULP1 mode.
As soon as the wake up event is asserted, the embedded 12MHz RC
oscillator restarts automatically, which fast startup signal
to trigger the PMC to wake up the system from the ULP1 mode can be
configured via DT.
It is based on the following patch set:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/390954.html
Wenyou Yang (4):
ARM: at91: pm: create a separate procedure for the ULP0 mode
ARM: at91: pm: add ULP1 mode support
ARM: at91: pm: configure PMC fast startup signals
Documentation: atmel-at91: add DT bindings for fast startup
.../devicetree/bindings/arm/atmel-pmc.txt | 74 +++++++++
arch/arm/mach-at91/pm.c | 112 +++++++++++++-
arch/arm/mach-at91/pm.h | 7 +
arch/arm/mach-at91/pm_suspend.S | 158 +++++++++++++++++---
include/linux/clk/at91_pmc.h | 36 +++++
5 files changed, 362 insertions(+), 25 deletions(-)
--
1.7.9.5
next reply other threads:[~2016-01-28 10:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-28 10:19 Wenyou Yang [this message]
2016-01-28 10:19 ` [PATCH 1/4] ARM: at91: pm: create a separate procedure for the ULP0 mode Wenyou Yang
[not found] ` <1453976356-24391-1-git-send-email-wenyou.yang-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2016-01-28 10:19 ` [PATCH 2/4] ARM: at91: pm: add ULP1 mode support Wenyou Yang
2016-01-28 10:19 ` [PATCH 3/4] ARM: at91: pm: configure PMC fast startup signals Wenyou Yang
2016-01-28 10:19 ` [PATCH 4/4] Documentation: atmel-at91: add DT bindings for fast startup Wenyou Yang
2016-01-29 16:20 ` Rob Herring
2016-02-01 6:22 ` Yang, Wenyou
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