diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/udc/net2280.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index e0191146ba22..51efee21915f 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -2270,6 +2270,16 @@ static void usb_reinit_338x(struct net2280 *dev) writel(val, &dev->llregs->ll_tsn_counters_3); /* + * AB errata. Errata 11. Workaround for Default Duration of LFPS + * Handshake Signaling for Device-Initiated U1 Exit is too short. + * Without this, various enumeration failures observed with + * modern superspeed hosts. + */ + val = readl(&dev->llregs->ll_lfps_timers_2); + writel((val & 0xffff0000) | LFPS_TIMERS_2_WORKAROUND_VALUE, + &dev->llregs->ll_lfps_timers_2); + + /* * Set Recovery Idle to Recover bit: * - On SS connections, setting Recovery Idle to Recover Fmw improves * link robustness with various hosts and hubs. |