Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9502
-gerrit
commit 88d2e4cbfc77ce20b4c333091bd846962923979d Author: Julius Werner jwerner@chromium.org Date: Fri Feb 6 15:34:14 2015 -0800
broadwell: Correct XHCI offset for USB 3.0 ports
Looks like Intel has added two more USB 2.0 ports from LynxPoint to Broadwell, which shifted the port offsets of the USB 3.0 ports behind them. The USB 2.0 ports are now 0x480 to 0x520 and the 3.0 ones 0x530 to 0x560 (at least according to what my kernel seems to think). The offset of the first USB 3.0 port is hardcoded and seems to have been copied over without accounting for this, meaning when we try to operate on all USB 3.0 ports we actually operate on the last two 2.0 and the first two 3.0 ports instead.
This patch should fix the bug for now. In the future, we might want to consider dynamically detecting port locations through the Protocol Capability structures at the end of the XHCI register set instead.
BRANCH=samus BUG=chrome-os-partner:35320 TEST=TODO
Change-Id: Ifab6e484980fd4cd0daf80ceb292ddced2ab1aea Signed-off-by: Stefan Reinauer reinauer@chromium.org Original-Commit-Id: 525f359c0b6b95b260add2b4617fd86119d69397 Original-Change-Id: Ic2becf2b043612270909ceef66e7d58efc8fcbe1 Original-Signed-off-by: Julius Werner jwerner@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/247351 Original-Reviewed-by: Duncan Laurie dlaurie@chromium.org Original-Reviewed-by: Todd Broch tbroch@chromium.org --- src/soc/intel/broadwell/include/soc/xhci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/soc/intel/broadwell/include/soc/xhci.h b/src/soc/intel/broadwell/include/soc/xhci.h index 3f4fb4e..2b899a3 100644 --- a/src/soc/intel/broadwell/include/soc/xhci.h +++ b/src/soc/intel/broadwell/include/soc/xhci.h @@ -39,7 +39,7 @@ #define XHCI_USB3PDO 0xe8
/* XHCI Memory Registers */ -#define XHCI_USB3_PORTSC(port) (0x510 + (port * 0x10)) +#define XHCI_USB3_PORTSC(port) (0x530 + (port * 0x10)) #define XHCI_USB3_PORTSC_CHST (0x7f << 17) #define XHCI_USB3_PORTSC_WCE (1 << 25) /* Wake on Connect */ #define XHCI_USB3_PORTSC_WDE (1 << 26) /* Wake on Disconnect */