From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH v2] MAX8952 PMIC Driver Initial Release Date: Fri, 20 Aug 2010 10:53:51 +0100 Message-ID: <20100820095351.GD13668@rakim.wolfsonmicro.main> References: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: MyungJoo Ham Cc: linux-samsung-soc@vger.kernel.org, kyungmin.park@samsung.com, myungjoo.ham@gmail.com, linux-arm-kernel@lists.infradead.org, lrg@slimlogic.co.uk List-Id: linux-samsung-soc@vger.kernel.org On Fri, Aug 20, 2010 at 02:43:56PM +0900, MyungJoo Ham wrote: > MAX8952 PMIC is used to provide voltage output between 770mV - 1400mV > with DVS support. In this initial release, users can set voltages for > four DVS modes, RAMP delay values, and SYNC frequency. > Controlling FPWM/SYNC_MODE/Pull-Down/Ramp Modes and reading CHIP_ID > is not supported in this release. > > If GPIO of EN is not valid in platform data, the driver assumes that it > is always-on. If GPIO of VID0 or VID1 is invalid, the driver pulls down > VID0 and VID1 to fix DVS mode as 0 and disables DVS support. > > We assume that V_OUT is capable to provide every voltage from 770mV to > 1.40V in 10mV steps although the data sheet has some ambiguity on it. > > Signed-off-by: MyungJoo Ham > Signed-off-by: Kyungmin Park Acked-by: Mark Brown From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@opensource.wolfsonmicro.com (Mark Brown) Date: Fri, 20 Aug 2010 10:53:51 +0100 Subject: [PATCH v2] MAX8952 PMIC Driver Initial Release In-Reply-To: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com> References: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com> Message-ID: <20100820095351.GD13668@rakim.wolfsonmicro.main> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Aug 20, 2010 at 02:43:56PM +0900, MyungJoo Ham wrote: > MAX8952 PMIC is used to provide voltage output between 770mV - 1400mV > with DVS support. In this initial release, users can set voltages for > four DVS modes, RAMP delay values, and SYNC frequency. > Controlling FPWM/SYNC_MODE/Pull-Down/Ramp Modes and reading CHIP_ID > is not supported in this release. > > If GPIO of EN is not valid in platform data, the driver assumes that it > is always-on. If GPIO of VID0 or VID1 is invalid, the driver pulls down > VID0 and VID1 to fix DVS mode as 0 and disables DVS support. > > We assume that V_OUT is capable to provide every voltage from 770mV to > 1.40V in 10mV steps although the data sheet has some ambiguity on it. > > Signed-off-by: MyungJoo Ham > Signed-off-by: Kyungmin Park Acked-by: Mark Brown