From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?S=C3=A9bastien_Basset?= <sbasset@aviwest.com>
Date: Thu, 23 Mar 2017 19:36:13 +0100
Subject: [U-Boot] uboot information
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2017-03-23 3:19 GMT+01:00 Simon Glass <sjg@chromium.org>:

> Hi,
>
> On 22 March 2017 at 10:35, S=C3=A9bastien Basset <sbasset@aviwest.com> wr=
ote:
> > 1/ No, As i am stuck on the mmc (pci controller internal soc),
> > 2/ Now i try to boot on usb key, but i don't see controller usb
> > Sorry, these are two different problems.
>
> It is better to post at the bottom that the top, for mailing lists.
>
> I think PCI XHCI has some problems. I'm not sure of its status.
>
> MMC seems to work well on Minnowboard Max (baytrail) but I am not sure
> about braswell. Is it perhaps a slightly different chip?
>
> Regards,
> Simon
>
>
For PCI XHCI, i see controller usb and root hub, but cannot reset port:

portstatus 711, change 0, 5 Gb/s
STAT_C_CONNECTION =3D 0 STAT_CONNECTION =3D 1  USB_PORT_STAT_ENABLE 0
portstatus 711, change 10, 5 Gb/s
STAT_C_CONNECTION =3D 0 STAT_CONNECTION =3D 1  USB_PORT_STAT_ENABLE 0
portstatus 711, change 10, 5 Gb/s
STAT_C_CONNECTION =3D 0 STAT_CONNECTION =3D 1  USB_PORT_STAT_ENABLE 0
portstatus 711, change 10, 5 Gb/s
STAT_C_CONNECTION =3D 0 STAT_CONNECTION =3D 1  USB_PORT_STAT_ENABLE 0
portstatus 711, change 10, 5 Gb/s
STAT_C_CONNECTION =3D 0 STAT_CONNECTION =3D 1  USB_PORT_STAT_ENABLE 0
Cannot enable port 10 after 5 retries, disabling port.
Maybe the USB cable is bad?
cannot reset port 10!?

do you have an idea,why reset port is break down ?

For MMC, braswell n3160 is dedicated for embedded iot, maybe for security.