xhci: mediatek: Add support for MTK xHCI host controller
This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 40dee2e..c370eb6 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -610,6 +610,16 @@
ep_ctx[ep_index]->tx_info =
cpu_to_le32(EP_MAX_ESIT_PAYLOAD_LO(max_esit_payload) |
EP_AVG_TRB_LENGTH(avg_trb_len));
+
+ /*
+ * The MediaTek xHCI defines some extra SW parameters which
+ * are put into reserved DWs in Slot and Endpoint Contexts
+ * for synchronous endpoints.
+ */
+ if (IS_ENABLED(CONFIG_USB_XHCI_MTK)) {
+ ep_ctx[ep_index]->reserved[0] =
+ cpu_to_le32(EP_BPKTS(1) | EP_BBM(1));
+ }
}
return xhci_configure_endpoints(udev, false);