[coreboot-gerrit] Change in coreboot[master]: sb/intel/bd82x6x: Add support to disable xHCI

[Felix Held (Code Review)]

Felix Held has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/34336 )

Change subject: sb/intel/bd82x6x: Add support to disable xHCI
......................................................................

sb/intel/bd82x6x: Add support to disable xHCI

Set FD bit if xHCI is disabled in devicetree.

Change-Id: I3d08ded10daea6d86857ebbbf3f8dcc85ebe9df4
Signed-off-by: Patrick Rudolph 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34336
Tested-by: build bot (Jenkins) 
Reviewed-by: Felix Held 
---
M src/southbridge/intel/bd82x6x/pch.c
1 file changed, 6 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Held: Looks good to me, approved

diff --git a/src/southbridge/intel/bd82x6x/pch.c b/src/southbridge/intel/bd82x6x/pch.c
index f8540af..e4eccd7 100644
--- a/src/southbridge/intel/bd82x6x/pch.c
+++ b/src/southbridge/intel/bd82x6x/pch.c
@@ -148,6 +148,12 @@
 static void pch_hide_devfn(unsigned devfn)
 {
    switch (devfn) {
+	case PCI_DEVFN(20, 0): /* xHCI */
+		if (pch_silicon_type() == PCH_TYPE_PPT) {
+			/* on CPT this bit is reserved */
+			RCBA32_OR(FD, PCH_DISABLE_XHCI);
+		}
+		break;
    case PCI_DEVFN(22, 0): /* MEI #1 */
    	RCBA32_OR(FD2, PCH_DISABLE_MEI1);
    	break;