From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bin Meng <bmeng.cn@gmail.com>
Date: Tue, 14 Jun 2016 09:55:36 +0800
Subject: [U-Boot] MinnowMax GPIO for USB3
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Hi George,

On Sun, Jun 12, 2016 at 5:26 PM, Bin Meng <bmeng.cn@gmail.com> wrote:
> On Sun, Jun 12, 2016 at 4:43 PM, Bin Meng <bmeng.cn@gmail.com> wrote:
>> Hi,
>>
>> My testing shows that only pin_usb_host_en1 is needed to turn on the
>> power on the USB3 port. The USB2 port power is turned on by default.
>>
>
> Seems I was confused by the GPIO pin number mapping. pin_usb_host_en1
> is used to control the USB2 port, while pin_usb_host_en0 is for USB3
> port. So I should say:
>
> My testing shows that only pin_usb_host_en1 is needed to turn on the
> power on the USB2 (upper white) port. The USB3 (bottom blue) port
> power is turned on by default.
>
> [snip]

vinoth eswaran confirmed removing pin_usb_host_en0 node from device
tree makes both usb ports work.

However, that is just covering the real bug [1] here. Will you take
time to prepare a patch that fixes the gpio driver?

[1] http://lists.denx.de/pipermail/u-boot/2015-October/229469.html

Regards,
Bin