From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthias Brugger <matthias.bgg@gmail.com>
Subject: Re: [PATCH 6/6] pinctrl: mt8173: set GPIO16 to usb iddig mode
Date: Wed, 23 Nov 2016 19:32:48 +0100
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To: Hongzhou Yang <hongzhou.yang@mediatek.com>, chunfeng yun <chunfeng.yun@mediatek.com>
Cc: Linus Walleij <linus.walleij@linaro.org>, Maoguang Meng <maoguang.meng@mediatek.com>, Yingjoe Chen <yingjoe.chen@mediatek.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Felipe Balbi <felipe.balbi@linux.intel.com>, Mathias Nyman <mathias.nyman@intel.com>, Alan Stern <stern@rowland.harvard.edu>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>, Pawel Moll <pawel.moll@arm.com>, Kumar Gala <galak@codeaurora.org>, Sascha Hauer <s.hauer@pengutronix.de>, Biao Huang <biao.huang@mediatek.com>, "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, linux-kernel@vger.kernel
List-Id: linux-gpio@vger.kernel.org

Hi Hongzhou,

On 12/05/16 04:55, Hongzhou Yang wrote:
> On Wed, 2016-05-11 at 19:09 -0700, Hongzhou Yang wrote:
>> On Thu, 2016-05-12 at 09:41 +0800, chunfeng yun wrote:
>>> Hi,
>>>
>>> On Wed, 2016-05-11 at 11:32 -0700, Hongzhou Yang wrote:
>>>> On Wed, 2016-05-11 at 13:56 +0200, Linus Walleij wrote:
>>>>> On Tue, May 10, 2016 at 10:23 AM, Chunfeng Yun
>>>>> <chunfeng.yun@mediatek.com> wrote:
>>>>>
>>>>>> the default mode of GPIO16 pin is gpio, when set EINT16 to
>>>>>> IRQ_TYPE_LEVEL_HIGH, no interrupt is triggered, it can be
>>>>>> fixed when set its default mode as usb iddig.
>>>>>>
>>>>>> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
>>>>>
>>>>
>>>> Chunfeng, GPIO16 can be used as EINT16 mode, but the pinmux should be 0.
>>>> If you want to set its default mode to iddig, you should set it in dts.
>>>>
>>> I set it in DTS, but it didn't work, because when usb driver requested
>>> IRQ, pinmux was switched back to default mode set by
>>> MTK_EINT_FUNCTION().
>>>
>>
>> After confirmed, there are something wrong with data sheet and pinmux
>> table, and GPIO16 can only receive interrupt by mode 1. So
>>
>> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
>>
>
> Linus,
>
> We find there are some other pins still have the same problem, so please
> hold on it. Sorry for so much noise.
>

Did you made any progress on this? I didn't see any patch on the mailing 
list.

Regards,
Matthias