diff options
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 4b681b0d420f..c3b0d01e1960 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1669,6 +1669,17 @@ static int dwc3_gadget_start(struct usb_gadget *g, } dwc3_writel(dwc->regs, DWC3_DCFG, reg); + /* + * We are telling dwc3 that we want to use DCFG.NUMP as ACK TP's NUMP + * field instead of letting dwc3 itself calculate that automatically. + * + * This way, we maximize the chances that we'll be able to get several + * bursts of data without going through any sort of endpoint throttling. + */ + reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); + reg &= ~DWC3_GRXTHRCFG_PKTCNTSEL; + dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); + /* Start with SuperSpeed Default */ dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); |