RE: [PATCH v6] usb: gadget: udc: renesas_usb3: Add register of usb role switch

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Hi Felipe-san,

> From: Felipe Balbi, Sent: Thursday, July 26, 2018 7:58 PM
> 
> Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> writes:
> 
> > This patch adds role switch support for R-Car SoCs into the USB 3.0
> > peripheral driver. Some R-Car SoCs (e.g. R-Car H3) have USB 3.0
> > dual-role device controller which has the USB 3.0 xHCI host and
> > Renesas USB 3.0 peripheral.
> >
> > Unfortunately, the mode change register (DRD_CON) contains
> > the USB 3.0 peripheral controller side only. So, this renesas_usb3
> > driver manages the DRD_CON now. However, in peripheral mode, the host
> > should stop. Also the host hardware needs to reinitialize its own
> > registers when the mode changes from peripheral to host mode.
> > Otherwise, the host cannot work correctly (e.g. detect a device
> > as high-speed).
> >
> > To achieve this reinitialization by a driver, this driver also
> > registers a role switch driver to manage the DRD_CON and get
> > a device pointer of usb 3.0 host from "companion" property of OF.
> > Then, when the usb role is changed, renesas_usb3_role_switch_set()
> > will attach/release the xhci-plat driver to reinitialize the host
> > hardware.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> 
> unfortunately doesn't apply:

Oops!
I will rebase this patch and submit a patch as v7 soon.

Best regards,
Yoshihiro Shimoda

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