linux-kernel - Re: [PATCH 01/13] twl4030_charger: use runtime_pm to keep usb phy active while charging.

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Date:	Tue, 15 Sep 2015 13:29:04 +0200
From:	Pavel Machek <pavel@....cz>
To:	NeilBrown <neil@...wn.name>
Cc:	Sebastian Reichel <sre@...nel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>, linux-pm@...r.kernel.org,
	Tony Lindgren <tony@...mide.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org,
	real GTA04 owners <gta04-owner@...delico.com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	linux-omap@...r.kernel.org, Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH 01/13] twl4030_charger: use runtime_pm to keep usb phy
 active while charging.

On Thu 2015-07-30 10:11:24, NeilBrown wrote:
> The twl4030 usb phy needs to be active while we are using
> the USB VBUS as a current source for charging.
> In particular, the usb3v1 regulator must be enabled and the
> PHY_PWR_PHYPWD bit must be set to keep the phy powered.
> 
> commit ab37813f4093a5f59cb8e083cde277289dc72ed3
>     twl4030_charger: Allow charger to control the regulator that feeds it
> 
> gave the charger control over the regulator, but didn't resolve
> the PHY_PWR_PHYPWD issue.
> 
> Now that both of these are controlled by runtime_pm in
> phy-twl4030-usb, we can simply take a runtime_pm reference to the USB
> phy whenever the charger wants to use it as a current source.
> 
> So this patch reverts the above commit, and adds the necessary
> runtime_pm calls.
> 
> Acked-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: NeilBrown <neil@...wn.name>

Acked-by: Pavel Machek <pavel@....cz>

-- 
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