mb/gigabyte/ga-b75m-d3h: enable superspeed ports for all variants
Unlike other Panther Point boards, the ga-b75m-d3h lacks definitions
to wire SuperSpeed-capable ports to XHCI in its devicetree, causing
these ports being wired to the second EHCI, and only working as USB
2.0 ports. The missing register definitions are added to fix that.
Tested on my ga-b75-d3v board.
Change-Id: Ida4de26f1a493ead83065b1ab27c0c684a074513
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37912
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
index 57b4960..7b47067 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
@@ -38,6 +38,9 @@
register "sata_port_map" = "0x3f"
register "sata_interface_speed_support" = "0x3"
+ register "xhci_switchable_ports" = "0xf"
+ register "superspeed_capable_ports" = "0xf"
+
register "pcie_port_coalesce" = "0"
register "docking_supported" = "0"
register "c2_latency" = "0x0065"