linux-kernel - Re: PROBLEM: bindings for drivers/mfd/twl4030-power.c

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Date:	Wed, 3 Sep 2014 14:13:10 -0500
From:	Nishanth Menon <nm@...com>
To:	Tony Lindgren <tony@...mide.com>
Cc:	"Dr. H. Nikolaus Schaller" <hns@...delico.com>,
	Lee Jones <lee.jones@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Marek Belisko <marek@...delico.com>,
	linux-omap <linux-omap@...r.kernel.org>
Subject: Re: PROBLEM: bindings for drivers/mfd/twl4030-power.c

On Wed, Sep 3, 2014 at 2:02 PM, Tony Lindgren <tony@...mide.com> wrote:
> * Nishanth Menon <nm@...com> [140903 11:51]:
>> On 09/03/2014 01:45 PM, Tony Lindgren wrote:
>> > * Dr. H. Nikolaus Schaller <hns@...delico.com> [140901 09:54]:
>> >> Hi,
>> >>
>> >> Am 25.08.2014 um 23:26 schrieb Tony Lindgren:
>> >>
>> >>> * Dr. H. Nikolaus Schaller <hns@...delico.com> [140817 08:46]:
>> >>>> I am trying to make ti,use_poweroff work on 3.17-rc1 for the GTA04 board.
>> >>>> Poweroff was broken for a while and I found that the driver isn't loaded at all.
>> >>>>
>> >>>> It appears to me that commit e7cd1d1eb16fcdf53001b926187a82f1f3e1a7e6
>> >>>> did rename the compatible entry from "ti,twl4030-power" to "ti,twl4030-power-reset"
>> >>>> but this was not documented in the bindings and of course our DT does not
>> >>>> match.
>> >>>>
>> >>>> Even your commit message talks about "ti,twl4030-power" although I can't find it
>> >>>> in the code.
>> >>>
>> >>> Hmm sorry did I accidentally remove ti,twl4030-power? If so, that should
>> >>> be added back for sure. Do you have a patch for that already?
>> >>
>> >> No, I have only updated our device tree because I don't know if it really should
>> >> be added back or not.
>> >>
>> >> As you say the "ti,twl4030-power" does not configure anything. So what
>> >> is it good for?
>> >
>> > Only for the poweroff if "ti,use_poweroff" is set. Care to do a patch
>> > as you clearly have a use case to test it with?
>>
>> Tony, we were talking about supporting ti,system-power-controller as
>> the standard way of stating poweroff control is by the PMIC. this
>> seems to be standard in various SoCs. use_poweroff seems to predate
>> that standardization. Should'nt we start using
>> ti,system-power-controller instead?
>
> Sure we can add that. But need to keep also parsing "ti,use_poweroff"
> as it's already in use.
>

Yep.
https://patchwork.kernel.org/patch/4836381/
https://patchwork.kernel.org/patch/4836371/

Split documentation out (based on discussion in
https://patchwork.kernel.org/patch/4743321/).

-- 
---
Regards,
Nishanth Menon
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