[PATCH 7/8] usb: ci_udc: Convert driver to DM_USB_GADGET

Wolfgang Denk
2020-10-27T09:32:49Z

Dear Peng Fan,

In message <DB6PR0402MB2760ECB86DD133520449792C88160@DB6PR0402MB2760.eurprd04.prod.outlook.com> you wrote:
> > >
> > > > > +static const struct udevice_id ci_udc_otg_ids[] = {
> > > > > + { .compatible = "fsl,imx27-usb-gadget" },
> > > > > + { }
> > > > > +};
> > > >
> > > > What is imx27-usb-gadget ?
> > >
> > > This U-Boot specific compatible string. I have no better idea what we
> > > need use here to make DM driver work.
> >
> > But what is "imx27" ? This is a i.MX8M family platform, right?
> > Not ancient i.MX27 ?
>
> This is just a compatible string means all controllers compatible with
> i.MX27 USB could use this driver.
>
> Yes this is for i.MX8MM, but the usb gadget feature could reuse
> the i.MX27 code.

Maybe I'm missing something, but I cannot find imx27-usb-gadget
being used anywhere - not in U-Boot nor in Linux mainline ?

And if we introduce this completely new - then why imx27 ?

Best regards,

Wolfgang Denk

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