On Tue, Aug 25, 2015 at 01:33:56PM +0300, Peter Mamonov wrote:
> Without this initialization ehci->qh_list[0].qh_endpt2 is left uninitialized,
> which causes problems with some EHCI host controllers.
>
> Das u-boot uses the same strategy:
>
> static int ehci_common_init(struct ehci_ctrl *ctrl, uint tweaks)
> {
> ...
> qh_list = &ctrl->qh_list;
>
> /* Set head of reclaim list */
> memset(qh_list, 0, sizeof(*qh_list));
> qh_list->qh_link = cpu_to_hc32((unsigned long)qh_list |
> QH_LINK_TYPE_QH);
> qh_list->qh_endpt1 = cpu_to_hc32(QH_ENDPT1_H(1) |
>
> QH_ENDPT1_EPS(USB_SPEED_HIGH));
> qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
> qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
> qh_list->qh_overlay.qt_token =
>
> cpu_to_hc32(QT_TOKEN_STATUS(QT_TOKEN_STATUS_HALTED));
> ...
> }
>
> Signed-off-by: Peter Mamonov <[email protected]>
Applied, thanks
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/barebox
