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mb/prodrive/hermes: Fix PCIe ClkSrc configuration 

Correct the PCIe clock source configuration as per the schematics.
Apparently, FSP does not turn off unused PCIe clock sources when using
SPS (Server Platform Services) firmware, but it does when using CSME
firmware.

TEST=BMC and Ethernet NICs get detected when using CSME firmware.

Change-Id: Id25a34816f512510640db95251a7a792c1eebe62
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58065
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This commit is contained in:
Angel Pons 2021-10-15 15:11:38 +02:00 committed by Felix Held
parent 6af980a2ae
commit 1bfabb0bc0
1 changed files with 14 additions and 16 deletions
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30
src/mainboard/prodrive/hermes/devicetree.cb
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@ -27,24 +27,22 @@ chip soc/intel/cannonlake
register "PchHdaDspEnable" = "0"
register "PchHdaAudioLinkHda" = "1"
# Controls the CLKREQ, not the output directly.
# Depends on the CLKREQ to CLK gen mapping below
register "PcieClkSrcUsage[0]" = "PCIE_CLK_FREE" # BMC, PCIe Slot1, Slot2, Slot4, Slot6
register "PcieClkSrcUsage[1]" = "PCIE_CLK_FREE" # PHY3
register "PcieClkSrcUsage[2]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[3]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[0]" = "PCIE_CLK_FREE" # PCIe Slot1
register "PcieClkSrcUsage[1]" = "PCIE_CLK_FREE" # PCIe Slot2
register "PcieClkSrcUsage[2]" = "PCIE_CLK_FREE" # PCIe Slot4
register "PcieClkSrcUsage[3]" = "PCIE_CLK_FREE" # PCIe Slot6
register "PcieClkSrcUsage[4]" = "PCIE_CLK_FREE" # RP9 M2 Slot M x4
register "PcieClkSrcUsage[5]" = "PCIE_CLK_FREE" # RP16 M2 Slot E x1
register "PcieClkSrcUsage[6]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[7]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[8]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[9]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[10]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[11]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[12]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[13]" = "PCIE_CLK_FREE" # PHY 0, PHY 1, PHY 2, PHY 4
register "PcieClkSrcUsage[14]" = "PCIE_CLK_FREE" # PB
register "PcieClkSrcUsage[15]" = "PCIE_CLK_FREE" # PCIe Slot3
register "PcieClkSrcUsage[6]" = "PCIE_CLK_FREE" # BMC
register "PcieClkSrcUsage[7]" = "PCIE_CLK_FREE" # PHY 3
register "PcieClkSrcUsage[8]" = "PCIE_CLK_FREE" # PCIe Slot3
register "PcieClkSrcUsage[9]" = "PCIE_CLK_FREE" # PHY 4
register "PcieClkSrcUsage[10]" = "PCIE_CLK_FREE" # PHY 2
register "PcieClkSrcUsage[11]" = "PCIE_CLK_FREE" # PHY 1
register "PcieClkSrcUsage[12]" = "PCIE_CLK_FREE" # PHY 0
register "PcieClkSrcUsage[13]" = "PCIE_CLK_FREE" # PB
register "PcieClkSrcUsage[14]" = "PCIE_CLK_NOTUSED"
register "PcieClkSrcUsage[15]" = "PCIE_CLK_NOTUSED"
# Only map M2 CLKREQ to CLK gen
register "PcieClkSrcClkReq[4]" = "4" # M2_M_CLK_REQ_n