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diff --git a/sys/dev/thunderbolt/nhi_pci.c b/sys/dev/thunderbolt/nhi_pci.c
--- a/sys/dev/thunderbolt/nhi_pci.c
+++ b/sys/dev/thunderbolt/nhi_pci.c
@@ -109,6 +109,10 @@
"Thunderbolt 3 NHI Port 0 (IceLake)" },
{ VENDOR_INTEL, DEVICE_ICL_NHI_1, 0xffff, 0xffff, NHI_TYPE_ICL,
"Thunderbolt 3 NHI Port 1 (IceLake)" },
+ { VENDOR_INTEL, DEVICE_TR_2C_NHI, 0xffff, 0xffff, NHI_TYPE_TR,
+ "Thunderbolt 3 NHI (Titan Ridge 2C)" },
+ { VENDOR_INTEL, DEVICE_TR_4C_NHI, 0xffff, 0xffff, NHI_TYPE_TR,
+ "Thunderbolt 3 NHI (Titan Ridge 4C)" },
{ VENDOR_AMD, DEVICE_PINK_SARDINE_0, 0xffff, 0xffff, NHI_TYPE_USB4,
"USB4 NHI Port 0 (Pink Sardine)" },
{ VENDOR_AMD, DEVICE_PINK_SARDINE_1, 0xffff, 0xffff, NHI_TYPE_USB4,
diff --git a/sys/dev/thunderbolt/nhi_reg.h b/sys/dev/thunderbolt/nhi_reg.h
--- a/sys/dev/thunderbolt/nhi_reg.h
+++ b/sys/dev/thunderbolt/nhi_reg.h
@@ -49,7 +49,8 @@
#define DEVICE_AR_LP_NHI 0x15bf
#define DEVICE_ICL_NHI_0 0x8a17
#define DEVICE_ICL_NHI_1 0x8a0d
-
+#define DEVICE_TR_2C_NHI 0x15e8
+#define DEVICE_TR_4C_NHI 0x15eb
#define VENDOR_AMD 0x1022
#define DEVICE_PINK_SARDINE_0 0x1668
#define DEVICE_PINK_SARDINE_1 0x1669
diff --git a/sys/dev/thunderbolt/tb_pcib.h b/sys/dev/thunderbolt/tb_pcib.h
--- a/sys/dev/thunderbolt/tb_pcib.h
+++ b/sys/dev/thunderbolt/tb_pcib.h
@@ -83,6 +83,8 @@
#define TB_DEV_AR_C_2C 0x15da
#define TB_DEV_ICL_0 0x8a1d
#define TB_DEV_ICL_1 0x8a21
+#define TB_DEV_TR_2C 0x15e7
+#define TB_DEV_TR_4C 0x15ea
#define TB_PCIB_VSEC(dev) ((struct tb_pcib_softc *)(device_get_softc(dev)))->vsec;
#define TB_DESC_MAX 80
diff --git a/sys/dev/thunderbolt/tb_pcib.c b/sys/dev/thunderbolt/tb_pcib.c
--- a/sys/dev/thunderbolt/tb_pcib.c
+++ b/sys/dev/thunderbolt/tb_pcib.c
@@ -102,6 +102,10 @@
"Thunderbolt 3 PCI-PCI Bridge (IceLake)" },
{ VENDOR_INTEL, TB_DEV_ICL_1, 0xffff, 0xffff, TB_GEN_TB3|TB_HWIF_ICL,
"Thunderbolt 3 PCI-PCI Bridge (IceLake)" },
+ { VENDOR_INTEL, TB_DEV_TR_2C, 0xffff, 0xffff, TB_GEN_TB3|TB_HWIF_TR,
+ "Thunderbolt 3 PCI-PCI Bridge (Titan Ridge 2C)" },
+ { VENDOR_INTEL, TB_DEV_TR_4C, 0xffff, 0xffff, TB_GEN_TB3|TB_HWIF_TR,
+ "Thunderbolt 3 PCI-PCI Bridge (Titan Ridge 4C)" },
{ 0, 0, 0, 0, 0, NULL }
};

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