From 12f656ced7469fffc6ba1f7befcea593894b0935 Mon Sep 17 00:00:00 2001 From: Zhongze Hu Date: Fri, 16 Feb 2018 00:53:02 -0800 Subject: [PATCH] mb/google/fizz: Enable PCIe port 11, 12 Our CFM daughter card would like to use individual PCIe lanes for two different devices on the card. dlaurie@ has reconfigured PCIe port 9-12 from 1x4 to 1x2 + 2x1 on b2b connector on fizz to meet the requirement: https://chrome-internal-review.googlesource.com/571936 We also need to enable the ports on device tree. BUG=b:72523836 TEST=none BRANCH=fizz Change-Id: Icded9850d833752680e0174b6c476e657817b319 Reviewed-on: https://chromium-review.googlesource.com/923867 Commit-Ready: Zhongze Hu Tested-by: Zhongze Hu Reviewed-by: Shelley Chen Reviewed-on: https://chromium-review.googlesource.com/924860 Commit-Queue: Shelley Chen Tested-by: Shelley Chen Signed-off-by: Zhongze Hu Reviewed-on: https://review.coreboot.org/23845 Tested-by: build bot (Jenkins) Reviewed-by: Shelley Chen --- src/mainboard/google/fizz/devicetree.cb | 30 +++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/fizz/devicetree.cb b/src/mainboard/google/fizz/devicetree.cb index 3b084ff1f9..5eeb03c648 100644 --- a/src/mainboard/google/fizz/devicetree.cb +++ b/src/mainboard/google/fizz/devicetree.cb @@ -228,6 +228,32 @@ chip soc/intel/skylake # RP 9 uses uses CLK SRC 2 register "PcieRpClkSrcNumber[8]" = "2" + # Enable Root port 11 for BtoB. + register "PcieRpEnable[10]" = "1" + # Enable CLKREQ# + register "PcieRpClkReqSupport[10]" = "1" + # RP 11 uses SRCCLKREQ2# + register "PcieRpClkReqNumber[10]" = "2" + # RP 11, Enable Advanced Error Reporting + register "PcieRpAdvancedErrorReporting[10]" = "1" + # RP 11, Enable Latency Tolerance Reporting Mechanism + register "PcieRpLtrEnable[10]" = "1" + # RP 11 uses uses CLK SRC 2 + register "PcieRpClkSrcNumber[10]" = "2" + + # Enable Root port 12 for BtoB. + register "PcieRpEnable[11]" = "1" + # Enable CLKREQ# + register "PcieRpClkReqSupport[11]" = "1" + # RP 12 uses SRCCLKREQ2# + register "PcieRpClkReqNumber[11]" = "2" + # RP 12, Enable Advanced Error Reporting + register "PcieRpAdvancedErrorReporting[11]" = "1" + # RP 12, Enable Latency Tolerance Reporting Mechanism + register "PcieRpLtrEnable[11]" = "1" + # RP 12 uses uses CLK SRC 2 + register "PcieRpClkSrcNumber[11]" = "2" + register "usb2_ports[0]" = "USB2_PORT_LONG(OC0)" # Type-C register "usb2_ports[1]" = "USB2_PORT_MID(OC3)" # Type-A Rear register "usb2_ports[2]" = "USB2_PORT_MID(OC2)" # Type-A Front @@ -351,8 +377,8 @@ chip soc/intel/skylake end end # PCI Express Port 9 for BtoB device pci 1d.1 off end # PCI Express Port 10 - device pci 1d.2 off end # PCI Express Port 11 - device pci 1d.3 off end # PCI Express Port 12 + device pci 1d.2 on end # PCI Express Port 11 + device pci 1d.3 on end # PCI Express Port 12 device pci 1e.0 on end # UART #0 device pci 1e.1 off end # UART #1 device pci 1e.2 on