HI Marek,
On Mon, Jan 6, 2014 at 9:24 PM, Marek Vasut <ma...@denx.de> wrote: Thanks for reviewing this. :-) > On Monday, January 06, 2014 at 10:29:43 AM, Vivek Gautam wrote: >> Update USB_MAX_CONTROLLER_COUNT to be '2' to enable support >> for both usb 3.0 controllers on exynos5420. >> >> NOTE: To use EHCI on exynos5420, this change will need to be >> reverted, since there's only one EHCI controller available on >> exynos5420. > > OK, this I seriously dislike. Hence a question ... my feeling is the XHCI and > EHCI code for handling multiple controllers and multiple ports is almost the > same. Can this code be adjusted to handle both EHCI and XHCI controllers > indiscriminately ? The controller count is actually used by the usb core (common/usb*) framework, right ? There's a need to add support for multiple controller types actually (so that EHCI and XHCI can be enabled simultaneously). Is that what you mean here ? > > This would result in having CONFIG_USB_MAX_CONTROLLER_COUNT 3 on this board > and > being able to use both EHCI and XHCI . Would this be possible for you to > implement please ? Thanks ! Ok, so you mean get all the controllers present on the board (EHCI and XHCI) setup. I think right now, the way USB core handles the controller count is quite different, so that 'CONFIG_USB_MAX_CONTROLLER_COUNT' helps in probing multiple controllers of the same type. I had plans to add support to use controllers of different types (EHCI and XHCI etc) simultaneously. But haven't really put a code for that yet. Can you suggest some pointers about how would you like to see EHCI and XHCI or even OHCI work together :-) I can take up this. > > Best regards, > Marek Vasut > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot -- Best Regards Vivek Gautam Samsung R&D Institute, Bangalore India _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
