[U-Boot] [UBOOT RFC PATCH 02/13] usb: gadget: udc-core: Add minimal udc-core from linux kernel

Felipe Balbi
2014-08-19T15:28:08Z

On Tue, Aug 19, 2014 at 08:48:36PM +0530, Kishon Vijay Abraham I wrote:
> Hi Lukasz,
>
> On Tuesday 19 August 2014 02:22 PM, Lukasz Majewski wrote:
> > Hi Kishon,
> >
> >> In order to support multiple USB device controllers in uboot,
> >> udc-core is needed.
> >
> > Is it? In u-boot at best only one UDC is operational at a time.
>
> I didn't mean operational at the same time. dra7xx has 4 USB
> controllers and we should allow the user to use any USB port for DFU.

but from u-boot's perspective, that can (should?) be a build-time
choice. That user, certainly, won't need more than one port active for
booting, right ?

> >> udc-core also helps to cleanly link the USB
> >> peripheral driver with the gadget driver. Hence Ported minimal
> >> udc-core from linux kernel.
> >
> > I'd appreciate the exact SHA for this udc-core.c code. And the SHA
> > should be from some already released mainline code (like final 3.16),
> > not any private branch nor linux-next.
>
> We can't have the exact udc-core.c from linux kernel as it deals with
> kernel driver model stuff and vfs which is not needed for kernel.
> Trying to have the exact same code from kernel complicates it.

what he means is to point to the SHA1 when you originally forked the
code from kernel. Sure udc-core can't be the same, but you based off of
a known commit ID frmo the kernel.

--
balbi
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