[U-Boot] 答复: [PATCH v2 1/4] USB: gadget: Add the cadence USB3 gadget driver

Marek Vasut marex at denx.de
Fri Aug 16 08:28:43 UTC 2019

On 8/16/19 6:45 AM, Sherry Sun wrote:
> Hi Marek
>> On 8/14/19 2:16 PM, sherry sun wrote:
>>> From: Sherry Sun <sherry.sun at nxp.com>
>>> This driver is ported from NXP i.MX U-Boot version imx_v2019.04 and
>>> some changes have also been made to adapt to U-Boot.
>>> Add the Cadence USB3 IP(CDNS3) driver for the gadget (device mode).
>>> The CDNS3 gadget driver support DM mode. CONFIG_DM_USB_GADGET
>> should
>>> be enabled when use this driver. And gadget_is_cdns3 checking is added
>>> to provide bcdUSB value in device descriptor.
>> The cadence core isn't xhci compatible ? Sigh ...
> Actually, I'm not very understand what the xhci compatible means?
> The cadence core can support usb peripheral and host. But for now,
> we just done the gadget part in the core code. If it needed later, we 
> can add the host part to it.

So this is all needed to support gadget on the cadence3 ?

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