linux-kernel - Re: [PATCH] regulator: core: Keep boot

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Message-ID: <CAJe_ZhdyqJVDvXCs_sw_SeB4Hfds+jRfj7JJp0VgG8j+XsXhZg@mail.gmail.com>
Date:	Thu, 26 Apr 2012 14:40:48 +0530
From:	Jassi Brar <jaswinder.singh@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Ulf Hansson <ulf.hansson@...ricsson.com>,
	Liam Girdwood <lrg@...mlogic.co.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mattias WALLIN <mattias.wallin@...ricsson.com>,
	Jonas ABERG <jonas.aberg@...ricsson.com>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH] regulator: core: Keep boot_on regulators powered during init

On 26 April 2012 14:05, Mark Brown <broonie@...nsource.wolfsonmicro.com> wrote:
> On Wed, Apr 25, 2012 at 09:04:01PM +0530, Jassi Brar wrote:
>
>>  Shouldn't the bootloader be responsible for ensuring MMC is
>> put down after using it and before passing control to the kernel.
>
> You might want to try to ensure that bootloaders always do the right
> thing but I prefer to work on more achievable goals like world peace. :/
>
>From what Ulf described so far, I am not sure if even gagging the regulator
api could be seen as a foolproof solution to the problem - he still doesn't
account for the necessary 'power-down sequence of commands' without
which the eMMC might fail attempts by the mmc stack to reset and initialize.

Appeasements and treaties could help achieve peace, I am just not sure
if former is a good option this time :)
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