From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752362AbcHIAZG (ORCPT ); Mon, 8 Aug 2016 20:25:06 -0400 Received: from mail-pa0-f50.google.com ([209.85.220.50]:34672 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751647AbcHIAZE (ORCPT ); Mon, 8 Aug 2016 20:25:04 -0400 Date: Mon, 8 Aug 2016 17:25:01 -0700 From: Matthias Kaehlcke To: Peter Chen Cc: gregkh@linuxfoundation.org, stern@rowland.harvard.edu, ulf.hansson@linaro.org, broonie@kernel.org, sre@kernel.org, robh+dt@kernel.org, shawnguo@kernel.org, dbaryshkov@gmail.com, dwmw3@infradead.org, k.kozlowski@samsung.com, linux-arm-kernel@lists.infradead.org, p.zabel@pengutronix.de, devicetree@vger.kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, linux-usb@vger.kernel.org, arnd@arndb.de, s.hauer@pengutronix.de, mail@maciej.szmigiero.name, troy.kisky@boundarydevices.com, festevam@gmail.com, oscar@naiandei.net, stephen.boyd@linaro.org, linux-pm@vger.kernel.org, stillcompiling@gmail.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 2/6] power: add power sequence library Message-ID: <20160809002501.GA125064@google.com> References: <1470646331-23227-1-git-send-email-peter.chen@nxp.com> <1470646331-23227-3-git-send-email-peter.chen@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1470646331-23227-3-git-send-email-peter.chen@nxp.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org El Mon, Aug 08, 2016 at 04:52:07PM +0800 Peter Chen ha dit: > We have an well-known problem that the device needs to do some power > sequence before it can be recognized by related host, the typical > example like hard-wired mmc devices and usb devices. > > This power sequence is hard to be described at device tree and handled by > related host driver, so we have created a common power sequence > library to cover this requirement. The core code has supplied > some common helpers for host driver, and individual power sequence > libraries handle kinds of power sequence for devices. > > pwrseq_generic is intended for general purpose of power sequence, which > handles gpios and clocks currently, and can cover regulator and pinctrl > in future. The host driver calls pwrseq_alloc_generic to create > an generic pwrseq instance. > > Signed-off-by: Peter Chen > Tested-by Joshua Clayton Reviewed-by: Matthias Kaehlcke Tested-by: Matthias Kaehlcke