diff --git a/sys/dev/asmc/asmc.c b/sys/dev/asmc/asmc.c
--- a/sys/dev/asmc/asmc.c
+++ b/sys/dev/asmc/asmc.c
@@ -223,7 +223,13 @@
 	{
 	  "MacBookPro5,1", "Apple SMC MacBook Pro Core 2 Duo (2008/2009)",
 	  ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
-	  ASMC_MBP5_TEMPS, ASMC_MBP5_TEMPNAMES, ASMC_MBP5_TEMPDESCS
+	  ASMC_MBP51_TEMPS, ASMC_MBP51_TEMPNAMES, ASMC_MBP51_TEMPDESCS
+	},
+
+	{
+	  "MacBookPro5,5", "Apple SMC MacBook Pro Core 2 Duo (Mid 2009)",
+	  ASMC_SMS_FUNCS, ASMC_FAN_FUNCS2, ASMC_LIGHT_FUNCS,
+	  ASMC_MBP55_TEMPS, ASMC_MBP55_TEMPNAMES, ASMC_MBP55_TEMPDESCS
 	},
 
 	{
@@ -1397,10 +1403,10 @@
 	case ASMC_ALSL_INT2A:
 		/*
 		 * This suppresses console and log messages for the ambient
-		 * light sensor for the only model known to generate this
-		 * interrupt.
+		 * light sensor for models known to generate this interrupt.
 		 */
-		if (strcmp(sc->sc_model->smc_model, "MacBookPro6,2") == 0)
+		if (strcmp(sc->sc_model->smc_model, "MacBookPro5,5") == 0 ||
+		    strcmp(sc->sc_model->smc_model, "MacBookPro6,2") == 0)
 			break;
 		/* FALLTHROUGH */
 	default:
diff --git a/sys/dev/asmc/asmcvar.h b/sys/dev/asmc/asmcvar.h
--- a/sys/dev/asmc/asmcvar.h
+++ b/sys/dev/asmc/asmcvar.h
@@ -209,13 +209,13 @@
 				  "Unknown", "Unknown", \
 				  "Wireless Module", }
 
-#define ASMC_MBP5_TEMPS		{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", \
+#define ASMC_MBP51_TEMPS	{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", \
 				  "TC0F", "TC0P", "TG0D", "TG0F", "TG0H", \
 				  "TG0P", "TG0T", "TG1H", "TN0D", "TN0P", \
 				  "TTF0", "Th2H", "Tm0P", "Ts0P", "Ts0S", \
 				  NULL }
 
-#define ASMC_MBP5_TEMPNAMES	{ "enclosure_bottom_0", "enclosure_bottom_1", \
+#define ASMC_MBP51_TEMPNAMES	{ "enclosure_bottom_0", "enclosure_bottom_1", \
 				  "enclosure_bottom_2", "enclosure_bottom_3", \
 				  "cpu_diode", "cpu", \
 				  "cpu_pin", "gpu_diode", \
@@ -226,7 +226,7 @@
 				  "heatsink_2", "memory_controller", \
 				  "pci_express_slot_pin", "pci_express_slot_unk" }
 
-#define ASMC_MBP5_TEMPDESCS	{ "Enclosure Bottom 0", "Enclosure Bottom 1", \
+#define ASMC_MBP51_TEMPDESCS	{ "Enclosure Bottom 0", "Enclosure Bottom 1", \
 				  "Enclosure Bottom 2", "Enclosure Bottom 3", \
 				  "CPU Diode", "CPU ???", \
 				  "CPU Pin", "GPU Diode", \
@@ -264,6 +264,31 @@
 				  "Heat Sink 2", "Memory Controller", \
 				  "Palm Rest", "Memory Proximity" }
 
+#define ASMC_MBP55_TEMPS	{ "TB0T", "TB1T", \
+				  "TB2T", "TB3T", \
+				  "TC0D", "TC0P", \
+				  "TN0D", "TN0P", \
+				  "TTF0", \
+				  "Th0H", "Th1H", "ThFH", \
+				  "Ts0P", "Ts0S", \
+				  NULL }
+
+#define ASMC_MBP55_TEMPNAMES	{ "enclosure_bottom_0", "enclosure_bottom_1", \
+				  "enclosure_bottom_2", "enclosure_bottom_3", \
+				  "cpu_diode", "cpu_pin", \
+				  "northbridge_diode", "northbridge_pin", \
+				  "unknown", \
+				  "heatsink_0", "heatsink_1", "heatsink_2", \
+				  "pci_express_slot_pin", "pci_express_slot_unk" }
+
+#define ASMC_MBP55_TEMPDESCS	{ "Enclosure Bottom 0", "Enclosure Bottom 1", \
+				  "Enclosure Bottom 2", "Enclosure Bottom 3", \
+				  "CPU Diode", "CPU Pin", \
+				  "Northbridge Diode", "Northbridge Pin", \
+				  "Unknown", \
+				  "Heatsink 0", "Heatsink 1", "Heatsink 2", \
+				  "PCI Express Slot Pin", "PCI Express Slot (unk)" }
+
 #define ASMC_MBP81_TEMPS	{ "TB0T", "TB1T", "TB2T", "TC0C", "TC0D", \
 				  "TC0E", "TC0F", "TC0P", "TC1C", "TC2C", \
 				  "TCFC", "TCGC", "TCSA", "TM0S", "TMBS", \