linux-kernel - Re: [PATCH v4 4/4] phy: add phy-hi6220-usb

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Message-ID: <54E6A4E9.4030401@linaro.org>
Date:	Fri, 20 Feb 2015 11:07:21 +0800
From:	zhangfei <zhangfei.gao@...aro.org>
To:	balbi@...com
CC:	Kishon Vijay Abraham I <kishon@...com>, mark.rutland@....com,
	Peter Chen <peter.chen@...escale.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	"dan . zhao" <dan.zhao@...ilicon.com>,
	Wangbinghui <wangbinghui@...ilicon.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v4 4/4] phy: add phy-hi6220-usb

Hi, Balbi

On 02/18/2015 10:35 PM, Felipe Balbi wrote:
> On Wed, Feb 18, 2015 at 01:44:21PM +0800, zhangfei wrote:
>> Hi, Kishon
>>
>> On 02/18/2015 01:35 PM, Kishon Vijay Abraham I wrote:
>>> Hi,
>>>
>>> On Thursday 12 February 2015 01:07 PM, Zhangfei Gao wrote:
>>>> Add usb phy controller for hi6220 platform
>>>>
>>>> Signed-off-by: Zhangfei Gao <zhangfei.gao@...aro.org>
>>>> ---
>>>>   drivers/phy/Kconfig          |   9 ++
>>>>   drivers/phy/Makefile         |   1 +
>>>>   drivers/phy/phy-hi6220-usb.c | 306
>>>> +++++++++++++++++++++++++++++++++++++++++++
>>>>   3 files changed, 316 insertions(+)
>>>>   create mode 100644 drivers/phy/phy-hi6220-usb.c
>>>
>>> why is this driver in drivers/phy when it doesn't use the generic PHY
>>> framework at all?
>>>
>>
>> Balbi recommended "new drivers only on drivers/phy/", including usb
>> phy.
>
> but it should use the API too. It's not only about a directory, you need
> to use the new API.
>
>> So Move drivers/usb/phy/phy-hi6220-usb.c to
>> drivers/phy/phy-hi6220-usb.c, required by Balbi.
>
> you're reading what I stated the way you like.

Sorry for my bad understanding.

Still not clear about the otg_set_peripheral, which is required in 
phy-hi6220-usb.c

1. drivers/usb/dwc2/gadget.c use
otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget);

2. include/linux/phy/phy.h
struct phy do not have member otg, while struct usb_phy has.

Could you give more hints?

Thanks
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