samus: Enable XHCI mode by default

- Enable xhci_default setting in devicetree
- Enable usb_xhci_on_resume setting for PEI
- Enable XHCI driver in libpayload

BUG=chrome-os-partner:23752
BRANCH=none
TEST=emerge-samus chromeos-coreboot-samus

Change-Id: I2a3965a222ce571a2ad43f568fc2d0ecb94a77bc
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/180673

payloads/libpayload/configs/config.samus

@@ -56,15 +56,15 @@ CONFIG_LP_NVRAM=y
 # CONFIG_LP_SPEAKER is not set
 # CONFIG_LP_STORAGE is not set
 CONFIG_LP_USB=y
-CONFIG_LP_USB_UHCI=y
-CONFIG_LP_USB_OHCI=y
-CONFIG_LP_USB_EHCI=y
-# CONFIG_LP_USB_XHCI is not set
+# CONFIG_LP_USB_UHCI is not set
+# CONFIG_LP_USB_OHCI is not set
+# CONFIG_LP_USB_EHCI is not set
+CONFIG_LP_USB_XHCI=y
 CONFIG_LP_USB_HID=y
 CONFIG_LP_USB_HUB=y
 CONFIG_LP_USB_MSC=y
 CONFIG_LP_USB_PCI=y
-CONFIG_LP_USB_GEN_HUB=y
+# CONFIG_LP_USB_MEMORY is not set
 # CONFIG_LP_BIG_ENDIAN is not set
 CONFIG_LP_LITTLE_ENDIAN=y
 CONFIG_LP_IO_ADDRESS_SPACE=y

src/mainboard/google/samus/devicetree.cb

@@ -80,6 +80,9 @@ chip northbridge/intel/haswell
 			# Disable PCIe CLKOUT 1-5 and CLKOUT_XDP
 			register "icc_clock_disable" = "0x013e0000"
 
+			# Route all USB ports to XHCI per default
+			register "xhci_default" = "1"
+
 			device pci 13.0 on end # Smart Sound Audio DSP
 			device pci 14.0 on end # USB3 XHCI
 			device pci 15.0 on end # Serial I/O DMA

src/mainboard/google/samus/romstage.c

@@ -124,6 +124,7 @@ void mainboard_romstage_entry(unsigned long bist)
 		dimm_channel0_disabled: 2,
 		dimm_channel1_disabled: 2,
 		max_ddr3_freq: 1600,
+		usb_xhci_on_resume: 1,
 		usb2_ports: {
 			/* Length, Enable, OCn#, Location */
 			{ 0x0080, 1, 0,			/* P0: HOST PORT */