linux-kernel - Re: [PATCH v2 1/2] extcon: max77843: Add OTG power control to the MUIC driver

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Date:   Mon, 23 Oct 2017 16:43:40 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v2 1/2] extcon: max77843: Add OTG power control to the
 MUIC driver

On Wed, 18 Oct 2017, Marek Szyprowski wrote:

> Enabling power on VBUS micro-usb pin is required only when passive OTG
> cable is connected. Initially OTG VBUS power control was planned to be
> done in charger driver. However such information is not really available
> from the extcon notifications, so VBUS power control has to be done
> directly in MUIC driver, which has all information about the attached
> accessory.
> 
> For example SmartDock is externally powered accessory, provides OTG
> (USB HOST) functionality and use VBUS pin for charging a device battery,
> so the VBUS charging pump should be disabled in such case.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
>  drivers/extcon/extcon-max77843.c     | 16 ++++++++++++++++

>  include/linux/mfd/max77843-private.h |  3 +++

Applied, thanks.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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