From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934972AbcA1KVn (ORCPT ); Thu, 28 Jan 2016 05:21:43 -0500 Received: from nasmtp01.atmel.com ([192.199.1.245]:13346 "EHLO DVREDG01.corp.atmel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751400AbcA1KVk (ORCPT ); Thu, 28 Jan 2016 05:21:40 -0500 From: Wenyou Yang To: Nicolas Ferre , Alexandre Belloni , Jean-Christophe Plagniol-Villard , Russell King CC: , Rob Herring , Pawel Moll , Mark Brown , Ian Campbell , Kumar Gala , , , , Wenyou Yang Subject: [PATCH 0/4] ARM: at91: pm: add ULP1 mode support Date: Thu, 28 Jan 2016 18:19:12 +0800 Message-ID: <1453976356-24391-1-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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