linux-kernel - Re: [linux-sunxi] [PATCH v2 0/5] ARM: sunxi: Add support for USB OTG PHY

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Date:	Wed, 12 Nov 2014 00:50:53 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Hans De Goede <hdegoede@...hat.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	devicetree <devicetree@...r.kernel.org>,
	Kishon Vijay Abraham I <kishon@...com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Russell King <linux@....linux.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	linux-sunxi <linux-sunxi@...glegroups.com>,
	Roman Byshko <rbyshko@...il.com>
Subject: Re: [linux-sunxi] [PATCH v2 0/5] ARM: sunxi: Add support for USB OTG PHY

On Tue, Nov 11, 2014 at 5:11 PM, Hans de Goede <hdegoede@...hat.com> wrote:
> Hi,
>
> On 11/10/2014 07:55 PM, Roman Byshko wrote:
>> Hi,
>>
>> There is already support for two USB phys, which are used for
>> USB host controllers on Allwinner SoC aka sunxi.
>>
>> This patch series add support for the USB OTG phy (aka phy0).
>>
>> The code has been tested on Allwinner A20 aka sun7i (Cubietruck).
>>
>> Best regards,
>> Roman Byshko
>
> First of all very cool that you're working on this, I somehow missed
> v1, but I'm very happy to see this.
>
> Second some questions, this series seems to only add support for
> initializing the phy, without adding the necessary magic for
> switching from app to host mode, and without actually hooking up musb,
> I assume you've a follow up series adding musb support, which actually
> uses the phy ?
>
> Also have you coordinated your work with ChenYu? ATM ChenYu is mostly
> working on other stuff, but AFAIk he has been working on musb support
> in the past.

I'm happy that someone has taken over. I was mostly just exploring what
OTG is, not much code actually made it into my working branch, which is
available on github.

ChenYu
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