From 25c1781cba16de70b857cd2084a25d47fc3f2c5d Mon Sep 17 00:00:00 2001 From: Shamile Khan Date: Mon, 19 Mar 2018 17:03:48 -0700 Subject: mb/google/octopus: Add CLKREQ and de-emphasis settings for PCIe Wi-FI BUG=b:73292699 BRANCH=None TEST=Build coreboot for Octopus board. Change-Id: Ic73ad38ad9a12bec614e530f7f35619246b9f57f Signed-off-by: Shamile Khan Reviewed-on: https://review.coreboot.org/25288 Reviewed-by: Aaron Durbin Reviewed-by: Furquan Shaikh Tested-by: build bot (Jenkins) --- .../google/octopus/variants/baseboard/devicetree.cb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb index 97a13103cf..fb8fe540c9 100644 --- a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb @@ -3,6 +3,24 @@ chip soc/intel/apollolake device lapic 0 on end end + register "pcie_rp_clkreq_pin[0]" = "3" # wifi/bt + # Disable unused clkreq of PCIe root ports + register "pcie_rp_clkreq_pin[1]" = "CLKREQ_DISABLED" + register "pcie_rp_clkreq_pin[2]" = "CLKREQ_DISABLED" + register "pcie_rp_clkreq_pin[3]" = "CLKREQ_DISABLED" + register "pcie_rp_clkreq_pin[4]" = "CLKREQ_DISABLED" + register "pcie_rp_clkreq_pin[5]" = "CLKREQ_DISABLED" + + # Set de-emphasis to disabled for PCIE WiFI (Thunderpeak) + # as it is required for detection + register "pcie_rp_deemphasis_enable[0]" = "0" + # Set de-emphasis to default (enabled) for remaining ports + register "pcie_rp_deemphasis_enable[1]" = "1" + register "pcie_rp_deemphasis_enable[2]" = "1" + register "pcie_rp_deemphasis_enable[3]" = "1" + register "pcie_rp_deemphasis_enable[4]" = "1" + register "pcie_rp_deemphasis_enable[5]" = "1" + # GPIO for PERST_0 (WLAN_PE_RST) register "prt0_gpio" = "GPIO_164" -- cgit v1.2.3