diff options
| -rw-r--r-- | src/soc/intel/broadwell/xhci.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/xhci.c b/src/soc/intel/broadwell/xhci.c index cfd0c5692d..9d0390e1a2 100644 --- a/src/soc/intel/broadwell/xhci.c +++ b/src/soc/intel/broadwell/xhci.c @@ -179,6 +179,15 @@ void usb_xhci_sleep_prepare(device_t dev, u8 slp_typ) reg32 = read32(mem_base + 0x80e0); reg32 |= (1 << 15); write32(mem_base + 0x80e0, reg32); + } else { + /* + * Clear port change status bits. Clearing CSC alone seemed to + * fix wakeup from S3 if entering USB compliance state even if + * bit wasn't set on the port. + */ + int port; + for (port = 0; port < usb_xhci_port_count_usb3(dev); port++) + usb_xhci_reset_status_usb3(mem_base, port); } reg32 = read32(mem_base + 0x8154); |