diff --git a/src/mainboard/amd/db800/Config.lb b/src/mainboard/amd/db800/Config.lb
index bdc109369f..2c0cce3e1e 100644
--- a/src/mainboard/amd/db800/Config.lb
+++ b/src/mainboard/amd/db800/Config.lb
@@ -127,8 +127,8 @@ chip northbridge/amd/lx
 			# IRQ 12 and 1 unmasked,  Keyboard and Mouse IRQs. OK
 			# SIRQ Mode = Active(Quiet) mode. Save power....
 			# Invert mask = IRQ 12 and 1 are active high. Keyboard and Mouse, UARTs, etc IRQs. OK
-			register "lpc_serirq_enable" = "0x000010da"
-			register "lpc_serirq_polarity" = "0x0000EF25"
+			register "lpc_serirq_enable" = "0x0000105a"
+			register "lpc_serirq_polarity" = "0x0000EFA5"
 			register "lpc_serirq_mode" = "1"
 			register "enable_gpio_int_route" = "0x0D0C0700"
 			register "enable_ide_nand_flash" = "0"	# 0:ide mode, 1:flash
diff --git a/src/mainboard/digitallogic/msm800sev/Config.lb b/src/mainboard/digitallogic/msm800sev/Config.lb
index 84db58bb42..eceee5bf49 100644
--- a/src/mainboard/digitallogic/msm800sev/Config.lb
+++ b/src/mainboard/digitallogic/msm800sev/Config.lb
@@ -128,9 +128,9 @@ chip northbridge/amd/lx
 			# Invert mask = IRQ 12 and 1 are active high. Keyboard and Mouse IRQs. OK
 			# How to get these? Boot linux and do this:
 			# rdmsr 0x51400025
-			register "lpc_serirq_enable" = "0x000010da"
+			register "lpc_serirq_enable" = "0x0000105a"
 			# rdmsr 0x5140004e -- polairy is high 16 bits of low 32 bits
-			register "lpc_serirq_polarity" = "0x0000EF25"
+			register "lpc_serirq_polarity" = "0x0000EFA5"
 			# mode is high 10 bits (determined from code)
 			register "lpc_serirq_mode" = "1"
 			# Don't yet know how to find this.
diff --git a/src/mainboard/iei/pcisa-lx-800-r10/Config.lb b/src/mainboard/iei/pcisa-lx-800-r10/Config.lb
index 7c89aaffca..87aa03d741 100644
--- a/src/mainboard/iei/pcisa-lx-800-r10/Config.lb
+++ b/src/mainboard/iei/pcisa-lx-800-r10/Config.lb
@@ -78,8 +78,8 @@ chip northbridge/amd/lx
 			# IRQ 12 and 1 unmasked,  Keyboard and Mouse IRQs. OK
 			# SIRQ Mode = Active(Quiet) mode. Save power....
 			# Invert mask = IRQ 12 and 1 are active high. Keyboard and Mouse, UARTs, etc IRQs. OK
-			register "lpc_serirq_enable" = "0x000010da"
-			register "lpc_serirq_polarity" = "0x0000EF25"
+			register "lpc_serirq_enable" = "0x0000105a"
+			register "lpc_serirq_polarity" = "0x0000EFA5"
 			register "lpc_serirq_mode" = "1"
 			register "enable_gpio_int_route" = "0x0D0C0700"
 			register "enable_ide_nand_flash" = "0"	# 0:ide mode, 1:flash
diff --git a/src/mainboard/pcengines/alix1c/Config.lb b/src/mainboard/pcengines/alix1c/Config.lb
index c78587851b..73a1875280 100644
--- a/src/mainboard/pcengines/alix1c/Config.lb
+++ b/src/mainboard/pcengines/alix1c/Config.lb
@@ -148,9 +148,9 @@ chip northbridge/amd/lx
 			# Invert mask = IRQ 12 and 1 are active high. Keyboard and Mouse IRQs. OK
 			# How to get these? Boot linux and do this:
 			# rdmsr 0x51400025
-			register "lpc_serirq_enable" = "0x000010da"
+			register "lpc_serirq_enable" = "0x0000105a"
 			# rdmsr 0x5140004e -- polairy is high 16 bits of low 32 bits
-			register "lpc_serirq_polarity" = "0x0000EF25"
+			register "lpc_serirq_polarity" = "0x0000EFA5"
 			# mode is high 10 bits (determined from code)
 			register "lpc_serirq_mode" = "1"
 			# Don't yet know how to find this.