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mb/lenovo/t430: Disable SuperSpeed capabilities for WWAN USB

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Just as in commit 38569d0610: ("mb/lenovo/{x230, x230s}: Disable
SuperSpeed capabilities for WWAN USB")

Although on ThinkPads with Panther Point PCH the usb port inside wwan
socket is usually wired to XHCI, it has actually no SuperSpeed lines,
so maybe it is okay to disable SuperSpeed capabilities, and wire them
to EHCI #2 by making use of XUSB2PRM and USB3PRM.

Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Change-Id: I61e61283a821686558f7f3fdfac7073bb3557e93
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78680
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Bill XIE
2023-10-27 18:58:15 +08:00
committed by Matt DeVillier
parent a6cfb336f2
commit c557847a9e
1 changed files with 4 additions and 2 deletions
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6
src/mainboard/lenovo/t430/devicetree.cb
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@@ -28,9 +28,11 @@ chip northbridge/intel/sandybridge
register "pcie_port_coalesce" = "true"
register "sata_interface_speed_support" = "0x3"
register "sata_port_map" = "0x17"
register "superspeed_capable_ports" = "0x0000000f"
# Do not enable xHCI Port 4 since WWAN USB is EHCI-only
register "superspeed_capable_ports" = "0x7"
register "xhci_switchable_ports" = "0x7"
register "xhci_overcurrent_mapping" = "0x04000201"
register "xhci_switchable_ports" = "0x0000000f"
# device specific SPI configuration
register "spi_uvscc" = "0x2005"