linux-kernel - Re: parent/child hierarchy for regulator

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Message-ID: <54F849AE.6040104@i2se.com>
Date:	Thu, 05 Mar 2015 13:18:54 +0100
From:	Stefan Wahren <stefan.wahren@...e.com>
To:	Peter Chen <peter.chen@...escale.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
CC:	broonie@...nel.org, lgirdwood@...il.com
Subject: Re: parent/child hierarchy for regulator

Hi Peter,

Am 05.03.2015 um 11:35 schrieb Peter Chen:
> Hi lists,
>
> Any good ways at code/dts to show parent/child hierarchy for regulator?
>
> The related regulators at my platforms like below:
> PMIC (SWB 5v) --> Switch Chip (GPIO Regulator) --> USB VBUS
>
> PMIC has one 5V regulator (eg, swbst at pfuse), and it is the input
> for USB power switch chip, and there are two gpios at this switch
> chip to control if 5V is output or not, we register these two gpios as 
> fixed regulators, currently, if regulator swbst is disabled, the
> gpio regulator has no way to know, and cause the vbus voltage is wrong.
>
> Thanks in advance.
>

i don't have an answer to your question, but do you think of i.MX28
platform?

Regards
Stefan
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