openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

usb: dwc3: Enable SuperSpeedPlus 

Enable SuperSpeedPlus by programming the DCFG.speed and after
enumerating, set gadget->speed appropriately.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
John Youn 2016-02-05 17:09:13 -08:00 committed by Felipe Balbi
parent 2c7f1bd912
commit 7580862b3e
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/usb/dwc3/gadget.c
View File

@ -1667,6 +1667,9 @@ static int dwc3_gadget_start(struct usb_gadget *g,
case USB_SPEED_HIGH:
reg |= DWC3_DSTS_HIGHSPEED;
break;
case USB_SPEED_SUPER_PLUS:
reg |= DWC3_DSTS_SUPERSPEED_PLUS;
break;
case USB_SPEED_SUPER: /* FALLTHROUGH */
case USB_SPEED_UNKNOWN: /* FALTHROUGH */
default:
@ -2371,6 +2374,11 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
dwc3_update_ram_clk_sel(dwc, speed);
switch (speed) {
case DWC3_DCFG_SUPERSPEED_PLUS:
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
dwc->gadget.ep0->maxpacket = 512;
dwc->gadget.speed = USB_SPEED_SUPER_PLUS;
break;
case DWC3_DCFG_SUPERSPEED:
/*
* WORKAROUND: DWC3 revisions <1.90a have an issue which