[PATCH v9] usb: add MediaTek USB3 DRD driver

[Chunfeng Yun <chunfeng.yun@mediatek.com>]

Hi Marek,

On Wed, 2020-10-14 at 15:03 +0200, Marek Vasut wrote:
> On 10/14/20 2:29 PM, Chunfeng Yun wrote:
> > On Wed, 2020-10-14 at 12:56 +0200, Marek Vasut wrote:
> >> On 10/14/20 10:50 AM, Chunfeng Yun wrote:
> >>> This patch adds support for the MediaTek USB3 DRD controller,
> >>> its host side is based on xHCI, this driver supports device mode
> >>> and host mode.
> >>
> >> This patch doesn't seem to apply to u-boot-usb/next , 
This may cause u-boot-usb/next build error, due to no gadget driver is
built, because I enabled the following configs in patch 764751784727
("configs: mt8512: enable fastboot and USB host related configs"):
CONFIG_DM_USB_GADGET=y
CONFIG_USB_MTU3=y
CONFIG_USB_GADGET=y

but the mtu3 driver is not yet applied in u-boot-usb/next (although
CONFIG_USB_MTU3 is enabled); and
CONFIG_DM_USB_GADGET requires a gadget driver to define
dm_usb_gadget_handle_interrupts(), then the build error happened.

> and also,
> >> u-boot-usb/next does not build:
> > 
> > There is error:
> >  aarch64:  +   mt8512_bm1_emmc
> > +aarch64-linux-ld.bfd: drivers/usb/gadget/udc/built-in.o: in function
> > `usb_gadget_handle_interrupts':
> > +drivers/usb/gadget/udc/udc-uclass.c:56: undefined reference to
> > `dm_usb_gadget_handle_interrupts'
> > 
> > It seems that the gadget of mtu3 is not enabled, but the default mode is
> > gadget mode, not sure why not works.
I tested it again, and look at the CI pipeline 4997, the mtu3 driver is
not applied into u-boot-usb/next, so will build error.

Please apply the following patch to u-boot-usb/next, it will build pass:
https://patchwork.ozlabs.org/project/uboot/patch/1602681717-20850-1-git-send-email-chunfeng.yun at mediatek.com/
[RESEND,v9] usb: add MediaTek USB3 DRD driver


The following patch is not needed anymore, please ignore it
https://patchwork.ozlabs.org/project/uboot/patch/1602680044-19794-1-git-send-email-chunfeng.yun at mediatek.com/
[v2] configs: mt8512: enable device mode of mtu3 explicitly

Thanks a lot

> > 
> > I sent a patch to try to fix it:
> > 
> > https://patchwork.ozlabs.org/project/uboot/patch/1602678229-19372-1-git-send-email-chunfeng.yun at mediatek.com/
> > configs: mt8512: enable device mode of mtu3 explicitly
> > 
> > 
> > Sorry for inconvenience
> 
> That's fine, but can you please rebase this on usb/next and resend, so I
> can apply it ?
> 
> Also, you can use either of the travis/gitlab CI to build-test the
> patches before submitting them.