[S] Change in coreboot[main]: mb/system76/mtl: darp10: Add TCSS configs

[Tim Crawford (Code Review)]

Tim Crawford has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/83696?usp=email )

Change subject: mb/system76/mtl: darp10: Add TCSS configs
......................................................................

mb/system76/mtl: darp10: Add TCSS configs

Fixes using USB3 devices at USB3 speeds in all ports.

Change-Id: I9bc6c5fc4c13bfa2e31ee1ce334b91e151373b6e
Signed-off-by: Tim Crawford 
---
M src/mainboard/system76/mtl/variants/darp10/overridetree.cb
M src/mainboard/system76/mtl/variants/darp10/ramstage.c
2 files changed, 27 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/96/83696/1

diff --git a/src/mainboard/system76/mtl/variants/darp10/overridetree.cb b/src/mainboard/system76/mtl/variants/darp10/overridetree.cb
index 5648739..8baa556 100644
--- a/src/mainboard/system76/mtl/variants/darp10/overridetree.cb
+++ b/src/mainboard/system76/mtl/variants/darp10/overridetree.cb
@@ -5,7 +5,26 @@
    	subsystemid 0x1558 0xa743 inherit

device ref tbt_pcie_rp0 on end
-		device ref tcss_xhci on end
+		device ref tcss_xhci on
+			register "tcss_ports[0]" = "TCSS_PORT_DEFAULT(OC_SKIP)"
+			register "tcss_ports[1]" = "TCSS_PORT_DEFAULT(OC_SKIP)"
+			# TCP2 is used as HDMI
+			# TCP3 is not used
+			chip drivers/usb/acpi
+				device ref tcss_root_hub on
+					chip drivers/usb/acpi
+						register "desc" = ""TBT Type-C""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						device ref tcss_usb3_port0 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB Type-C""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						device ref tcss_usb3_port1 on end
+					end
+				end
+			end
+		end
    	device ref tcss_dma0 on end
    	device ref xhci on
    		register "usb2_ports" = "{
diff --git a/src/mainboard/system76/mtl/variants/darp10/ramstage.c b/src/mainboard/system76/mtl/variants/darp10/ramstage.c
index 2762794..63dfb35 100644
--- a/src/mainboard/system76/mtl/variants/darp10/ramstage.c
+++ b/src/mainboard/system76/mtl/variants/darp10/ramstage.c
@@ -4,6 +4,13 @@

void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 {
+	// Enable TCP1 USB-A conversion
+	// BIT 0:3 is mapping to PCH XHCI USB2 port
+	// BIT 4:5 is reserved
+	// BIT 6 is orientational
+	// BIT 7 is enable
+	params->EnableTcssCovTypeA[1] = 0x82;
+
    // XXX: Enabling C10 reporting causes system to constantly enter and
    // exit opportunistic suspend when idle.
    params->PchEspiHostC10ReportEnable = 0;