From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: MyungJoo Ham <myungjoo.ham@samsung.com>
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
Subject: Re: [PATCH v2] MAX8952 PMIC Driver Initial Release
Date: Fri, 20 Aug 2010 10:53:51 +0100 [thread overview]
Message-ID: <20100820095351.GD13668@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com>
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 <myungjoo.ham@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
WARNING: multiple messages have this Message-ID (diff)
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] MAX8952 PMIC Driver Initial Release
Date: Fri, 20 Aug 2010 10:53:51 +0100 [thread overview]
Message-ID: <20100820095351.GD13668@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <1282283036-12641-1-git-send-email-myungjoo.ham@samsung.com>
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 <myungjoo.ham@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
next prev parent reply other threads:[~2010-08-20 9:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-20 5:43 [PATCH v2] MAX8952 PMIC Driver Initial Release MyungJoo Ham
2010-08-20 5:43 ` MyungJoo Ham
2010-08-20 9:53 ` Mark Brown [this message]
2010-08-20 9:53 ` Mark Brown
2010-08-20 10:47 ` Liam Girdwood
2010-08-20 10:47 ` Liam Girdwood
2010-09-01 0:15 ` Kukjin Kim
2010-09-01 0:15 ` Kukjin Kim
2010-09-01 9:15 ` Mark Brown
2010-09-01 9:15 ` Mark Brown
2010-09-01 9:44 ` Kukjin Kim
2010-09-01 9:44 ` Kukjin Kim
2010-09-01 9:48 ` Mark Brown
2010-09-01 9:48 ` Mark Brown
2010-09-01 10:05 ` Kukjin Kim
2010-09-01 10:05 ` Kukjin Kim
2010-09-01 10:12 ` Kyungmin Park
2010-09-01 10:12 ` Kyungmin Park
2010-09-01 10:27 ` Kukjin Kim
2010-09-01 10:27 ` Kukjin Kim
2010-09-01 10:36 ` Kyungmin Park
2010-09-01 10:36 ` Kyungmin Park
2010-09-01 11:16 ` Mark Brown
2010-09-01 11:16 ` Mark Brown
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