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 }
 };