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Message-ID: <20150306024043.GA12879@shlinux2> Date: Fri, 6 Mar 2015 10:40:45 +0800 From: Peter Chen <peter.chen@...escale.com> To: Stefan Wahren <stefan.wahren@...e.com> CC: <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <broonie@...nel.org>, <lgirdwood@...il.com> Subject: Re: parent/child hierarchy for regulator On Thu, Mar 05, 2015 at 01:18:54PM +0100, Stefan Wahren wrote: > 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? > No, many Freescale i.mx6 SDB boards need to consider this problem. -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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