linux-kernel - Re: [PATCH 6/6 v3] ARM: Tegra: Add support for TPS65910 PMIC

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Date:	Tue, 08 May 2012 10:15:51 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Rhyland Klein <rklein@...dia.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Liam Girdwood <lrg@...com>, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH 6/6 v3] ARM: Tegra: Add support for TPS65910 PMIC

On 05/08/2012 09:58 AM, Mark Brown wrote:
> On Tue, May 08, 2012 at 09:56:02AM -0600, Stephen Warren wrote:
>> On 05/08/2012 12:42 PM, Rhyland Klein wrote:
>>> Add support for the tps65910 pmic on cardhu.
> 
>> Lets ignore this one patch for now; it's not clear whether Cardhu
>> should instantiate the TPS65910 or TPS62360 PMU; apparently
>> different Cardhu variants have one, the other, or even both. I'm
>> trying to find out which variant(s) is/are useful to support.
> 
> IIRC it's the same as Whistler was and even more fun that that -
> you might have random PMIC boards appearing from random places and
> can't rely on what's on the system at all!  See the thread I
> started about plugin modules the other day :)

I think you're thinking of some other board. Cardhu is a tablet
reference platform without pluggable modules, and I believe the PMIC
mess is just due to some rework in later board revisions to solve some
under-power issues in the earlier variants. But I believe there is
some Tegra30 reference board equivalent to Whistler with all kinds of
pluggable modules, although I haven't touched one yet, and don't
recall its name.
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