From: Lucas Stach <l.stach@pengutronix.de>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: Stefan Agner <stefan@agner.ch>,
thierry.reding@gmail.com, sameo@linux.intel.com, dev@lynxeye.de,
mark.rutland@arm.com, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] ARM: tegra: set SM2 voltage correct
Date: Thu, 28 Nov 2013 10:49:56 +0100 [thread overview]
Message-ID: <1385632196.5838.4.camel@weser.hi.pengutronix.de> (raw)
In-Reply-To: <5296281C.1060403@wwwdotorg.org>
Am Mittwoch, den 27.11.2013, 10:13 -0700 schrieb Stephen Warren:
> On 11/26/2013 04:45 PM, Stefan Agner wrote:
> > Set the requested SM2 voltage to the correct value of 1.8V. The value
> > before used to work on TPS658623 since the driver applied a wrong
> > voltage table too. However, the TPS658643 used on newer devices uses
> > yet another voltage table and those broke that compatibility. The
> > regulator driver now has the correct voltage table for both regulator
> > versions and those the correct voltage can be used in this device
> > tree.
>
> One thing you haven't called out explicitly here is that this series is
> an incompatible change to the DT, since the old buggy driver used to
> allow old buggy DT content to accidentally work.
>
The current (wrong and potentially dangerous) DT content only worked on
the engineering sample models. So this change definitely does improve
the situation, even with the risk of breaking a small fraction of
working boards.
> I'm not too familiar with who's using mainline on the Colibri boards.
> Hopefully everyone doing that is using in-kernel DTs, so this
> incompatible change won't be any issue for anyone.
>
I know of some parties using mainline, but I think everyone so far is
able to use DTs bundled with the kernel.
Regards,
Lucas
--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2013-11-28 9:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-26 23:45 [PATCH 0/3] regulator: tps6586x: add version detection and voltage tables Stefan Agner
2013-11-26 23:45 ` [PATCH 1/3] mfd: tps6586x: add version detection Stefan Agner
2013-11-27 13:09 ` Lee Jones
2013-11-27 13:11 ` Lee Jones
2013-11-27 13:49 ` Stefan Agner
2013-11-27 13:55 ` Lee Jones
[not found] ` <cfb203a896eda67c106794d89e668d56@agner.ch>
[not found] ` <20131127143429.GN3296@lee--X1>
2013-11-27 14:36 ` Lee Jones
2013-11-27 15:26 ` Stefan Agner
2013-11-27 15:30 ` Lee Jones
2013-11-27 15:52 ` Stefan Agner
2013-11-27 16:14 ` Lee Jones
2013-11-27 16:58 ` Stephen Warren
2013-11-27 21:44 ` Stefan Agner
2013-11-26 23:45 ` [PATCH 2/3] regulator: tps6586x: add voltage table for tps658643 Stefan Agner
2013-11-27 17:09 ` Stephen Warren
2013-11-27 21:56 ` Stefan Agner
2013-11-28 8:30 ` Thierry Reding
2013-11-26 23:45 ` [PATCH 3/3] ARM: tegra: set SM2 voltage correct Stefan Agner
2013-11-27 9:59 ` Lucas Stach
2013-11-27 11:05 ` Stefan Agner
2013-11-27 11:06 ` Lucas Stach
2013-11-27 17:13 ` Stephen Warren
2013-11-27 22:03 ` Stefan Agner
2013-11-28 9:49 ` Lucas Stach [this message]
2013-11-30 16:24 ` Stefan Agner
2013-11-28 8:13 ` [PATCH 0/3] regulator: tps6586x: add version detection and voltage tables Thierry Reding
2013-11-29 8:20 ` Kai Poggensee
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