mb/siemens/mc_ehl2: Clean up PCIe root port settings in devicetree
PCIe root ports #4 (00:1c.3) and #6 (00:1c.5) are currently not used on
this mainboard and are not routed either, so remove them from the
devicetree completely. PCIe root port #7 (00:1c.6) is connected and
used. Add the missing settings for L1 substates and latency reporting to
disable these features for this port as well.
Change-Id: I47e8528bea993ed527a0aecdbc93b94bbd9a7a49
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58853
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
index 8b9e9e2..701efb4 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
@@ -50,9 +50,7 @@
register "PcieRpEnable[0]" = "1"
register "PcieRpEnable[1]" = "1"
register "PcieRpEnable[2]" = "1"
- register "PcieRpEnable[3]" = "1"
register "PcieRpEnable[4]" = "1"
- register "PcieRpEnable[5]" = "1"
register "PcieRpEnable[6]" = "1"
register "PcieClkSrcUsage[0]" = "PCIE_CLK_FREE"
@@ -73,17 +71,15 @@
register "PcieRpL1Substates[0]" = "L1_SS_DISABLED"
register "PcieRpL1Substates[1]" = "L1_SS_DISABLED"
register "PcieRpL1Substates[2]" = "L1_SS_DISABLED"
- register "PcieRpL1Substates[3]" = "L1_SS_DISABLED"
register "PcieRpL1Substates[4]" = "L1_SS_DISABLED"
- register "PcieRpL1Substates[5]" = "L1_SS_DISABLED"
+ register "PcieRpL1Substates[6]" = "L1_SS_DISABLED"
# Disable LTR for all PCIe root ports
register "PcieRpLtrDisable[0]" = "true"
register "PcieRpLtrDisable[1]" = "true"
register "PcieRpLtrDisable[2]" = "true"
- register "PcieRpLtrDisable[3]" = "true"
register "PcieRpLtrDisable[4]" = "true"
- register "PcieRpLtrDisable[5]" = "true"
+ register "PcieRpLtrDisable[6]" = "true"
# Storage (SATA/SDCARD/EMMC) related UPDs
register "SataSalpSupport" = "0"
@@ -220,9 +216,7 @@
device pci 1c.0 on end # RP1 (pcie0 single VC)
device pci 1c.1 on end # RP2 (pcie0 single VC)
device pci 1c.2 on end # RP3 (pcie0 single VC)
- device pci 1c.3 on end # RP4 (pcie0 single VC)
device pci 1c.4 on end # RP5 (pcie1 multi VC)
- device pci 1c.5 on end # RP6 (pcie2 multi VC)
device pci 1c.6 on end # RP7 (pcie3 multi VC)
device pci 1d.0 off end # Intel PSE IPC (local host to PSE)