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mb/facebookmonolith: Update root port settings 

Update monolith root port settings to match those of the original BIOS.

MaxPayload is set to 256 bytes, ASPM is disabled and LTR and Advanced
Error reporting are enabled.

BUG=N/A
TEST=tested on facebook monolith

Change-Id: Idf6e706d45cf1ea1aee4a75a6d0eb130b21db927
Signed-off-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41172
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
This commit is contained in:
Wim Vervoorn 2020-05-07 13:21:36 +02:00 committed by Patrick Georgi
parent d0ded16529
commit 544cc83470
1 changed files with 24 additions and 0 deletions
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24
src/mainboard/facebook/monolith/devicetree.cb
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@ -161,6 +161,14 @@ chip soc/intel/skylake
register "PcieRpEnable[2]" = "1"
# Disable CLKREQ#
register "PcieRpClkReqSupport[2]" = "0"
# Set MaxPayload to 256 bytes
register "PcieRpMaxPayload[2]" = "RpMaxPayload_256"
# Enable Latency Tolerance Reporting Mechanism
register "PcieRpLtrEnable[2]" = "1"
# Enable Advanced Error Reporting
register "PcieRpAdvancedErrorReporting[2]" = "1"
# Disable Aspm
register "PcieRpAspm[2]" = "AspmDisabled"
# PCIE Port 4 disabled
# PCIE Port 5 x1 -> MODULE i219
@ -168,6 +176,14 @@ chip soc/intel/skylake
# PCIE Port 6 x1 -> BASEBOARD x1 i210 : Mapped to PCIe 4 on the baseboard
register "PcieRpEnable[5]" = "1"
register "PcieRpClkReqSupport[5]" = "0"
# Set MaxPayload to 256 bytes
register "PcieRpMaxPayload[5]" = "RpMaxPayload_256"
# Enable Latency Tolerance Reporting Mechanism
register "PcieRpLtrEnable[5]" = "1"
# Enable Advanced Error Reporting
register "PcieRpAdvancedErrorReporting[5]" = "1"
# Disable Aspm
register "PcieRpAspm[5]" = "AspmDisabled"
# PCIE Port 7 Disabled
# PCIE Port 8 Disabled
@ -178,6 +194,14 @@ chip soc/intel/skylake
register "PcieRpClkReqSupport[8]" = "0"
# Use Hot Plug subsystem
register "PcieRpHotPlug[8]" = "1"
# Set MaxPayload to 256 bytes
register "PcieRpMaxPayload[8]" = "RpMaxPayload_256"
# Enable Latency Tolerance Reporting Mechanism
register "PcieRpLtrEnable[8]" = "1"
# Enable Advanced Error Reporting
register "PcieRpAdvancedErrorReporting[8]" = "1"
# Disable Aspm
register "PcieRpAspm[8]" = "AspmDisabled"
# USB 2.0 Enable all ports
register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC_SKIP)" # USB-C Port 2