Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4931
-gerrit
commit 552b86ff407c2208640f11918694dbef7bbf2e7d Author: Duncan Laurie dlaurie@chromium.org Date: Fri Nov 1 13:35:32 2013 -0700
rambi: Enable USB boot with EHCI controller
This adds the EHCI driver back to libpayload and configures the devicetree to route ports to EHCI.
This is hopefully just temporary until the issues with XHCI can be worked out.
BUG=chrome-os-partner:23635 BRANCH=rambi TEST=build and boot from USB on rambi
Change-Id: I0549661f5e5fd83477f4839a05e7e21175b24b64 Signed-off-by: Duncan Laurie dlaurie@chromium.org Reviewed-on: https://chromium-review.googlesource.com/175513 Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/mainboard/google/rambi/devicetree.cb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/src/mainboard/google/rambi/devicetree.cb b/src/mainboard/google/rambi/devicetree.cb index 66d98ed..af115a6 100644 --- a/src/mainboard/google/rambi/devicetree.cb +++ b/src/mainboard/google/rambi/devicetree.cb @@ -5,6 +5,24 @@ chip soc/intel/baytrail register "sata_ahci" = "0x1" register "ide_legacy_combined" = "0x0"
+ # Route USB ports to XHCI -- DISABLED UNTIL XHCI WORKS + register "usb_route_to_xhci" = "0" + + # USB Port Disable Mask + register "usb2_port_disable_mask" = "0x0" + register "usb3_port_disable_mask" = "0x0" + + # USB PHY settings + # TODO: These values are from Baytrail and need tuned for Rambi board + register "usb2_per_port_lane0" = "0x00049a09" + register "usb2_per_port_rcomp_hs_pullup0" = "0x0300401d" + register "usb2_per_port_lane1" = "0x00049a09" + register "usb2_per_port_rcomp_hs_pullup1" = "0x0300401d" + register "usb2_per_port_lane2" = "0x00049209" + register "usb2_per_port_rcomp_hs_pullup2" = "0x01004015" + register "usb2_per_port_lane3" = "0x00049a09" + register "usb2_per_port_rcomp_hs_pullup3" = "0x0300401d" + device cpu_cluster 0 on device lapic 0 on end end
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Aaron Durbin