On Mon, May 20, 2019 at 7:13 AM Schrempf Frieder frieder.schrempf@kontron.de wrote:
Hi Sven,
On 06.05.19 12:12, Sven Schwermer wrote:
Hi,
I’m running into linking issues when enabling CONFIG_DM_USB_GADGET with CONFIG_CI_UDC because dm_usb_gadget_handle_interrupts is not available. That made me look into what’s required to port ci_udc to driver model. I have a few conceptual questions about this:
Some other USB gadget drivers (dwc3-generic, ti-musb) seem to create a wrapper driver that binds either the gadget or the host-mode driver to the USB device, depending on the configured mode. Is this the desired approach?
I’m working with a i.MX6 (7) device so the host-mode driver is ehci-mx6, but I’ve seen that ci_udc is also used with other host-mode drivers. How would a wrapper work in this case where there are multiple possible host-mode drivers but one gadget driver?
Any tips and hints are welcome :)
I started a wrapper a while ago. I posted an RFC to the mailing list, but i never heard anything. As of right now, my wrapper only supports the host side, but it could easily be adapter to add the gadget.
https://patchwork.ozlabs.org/patch/1076080/
adam
Did you make any progress with getting ci_udc to work with DM in SPL on i.MX? The reason I'm asking is, that I need the SDP feature and I also want to use DM for USB.
Thanks, Frieder _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot