diff --git a/Documentation/devicetree/bindings/marvell.txt b/Documentation/devicetree/bindings/marvell.txt
index bc287efea475..ea2b16ced49b 100644
--- a/Documentation/devicetree/bindings/marvell.txt
+++ b/Documentation/devicetree/bindings/marvell.txt
@@ -265,7 +265,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd.
    serial port.
 
    Required properties:
-     - device_type : "serial"
      - compatible : "marvell,mv64360-mpsc"
      - reg : Offset and length of the register set for this device
      - sdma : the phandle for the SDMA node used by this port
@@ -282,7 +281,6 @@ prefixed with the string "marvell,", for Marvell Technology Group Ltd.
 
    Example Discovery MPSCINTR node:
      mpsc@8000 {
-	     device_type = "serial";
 	     compatible = "marvell,mv64360-mpsc";
 	     reg = <0x8000 0x38>;
 	     virtual-reg = <0xf1008000>;
diff --git a/arch/powerpc/boot/dts/c2k.dts b/arch/powerpc/boot/dts/c2k.dts
index de2044b33336..1e32903cb0a8 100644
--- a/arch/powerpc/boot/dts/c2k.dts
+++ b/arch/powerpc/boot/dts/c2k.dts
@@ -171,7 +171,6 @@ MPSCINTR: mpscintr@b800 {
 		};
 
 		MPSC0: mpsc@8000 {
-			device_type = "serial";
 			compatible = "marvell,mv64360-mpsc";
 			reg = <0x8000 0x38>;
 			virtual-reg = <0xd8008000>;
@@ -186,7 +185,6 @@ MPSC0: mpsc@8000 {
 		};
 
 		MPSC1: mpsc@9000 {
-			device_type = "serial";
 			compatible = "marvell,mv64360-mpsc";
 			reg = <0x9000 0x38>;
 			virtual-reg = <0xd8009000>;
diff --git a/arch/powerpc/boot/dts/prpmc2800.dts b/arch/powerpc/boot/dts/prpmc2800.dts
index 77c8db238d1c..00afaacf8c8c 100644
--- a/arch/powerpc/boot/dts/prpmc2800.dts
+++ b/arch/powerpc/boot/dts/prpmc2800.dts
@@ -159,7 +159,6 @@ MPSCINTR: mpscintr@b800 {
 		};
 
 		MPSC0: mpsc@8000 {
-			device_type = "serial";
 			compatible = "marvell,mv64360-mpsc";
 			reg = <0x8000 0x38>;
 			virtual-reg = <0xf1008000>;
@@ -174,7 +173,6 @@ MPSC0: mpsc@8000 {
 		};
 
 		MPSC1: mpsc@9000 {
-			device_type = "serial";
 			compatible = "marvell,mv64360-mpsc";
 			reg = <0x9000 0x38>;
 			virtual-reg = <0xf1009000>;
diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c
index a3a8fad8537d..c2dba7db71ad 100644
--- a/arch/powerpc/sysdev/mv64x60_dev.c
+++ b/arch/powerpc/sysdev/mv64x60_dev.c
@@ -448,7 +448,7 @@ static int __init mv64x60_device_setup(void)
 	int err;
 
 	id = 0;
-	for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
+	for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
 		err = mv64x60_mpsc_device_setup(np, id++);
 		if (err)
 			printk(KERN_ERR "Failed to initialize MV64x60 "
diff --git a/arch/powerpc/sysdev/mv64x60_udbg.c b/arch/powerpc/sysdev/mv64x60_udbg.c
index 50a81387e9b1..3b8734b870e9 100644
--- a/arch/powerpc/sysdev/mv64x60_udbg.c
+++ b/arch/powerpc/sysdev/mv64x60_udbg.c
@@ -85,7 +85,7 @@ static void mv64x60_udbg_init(void)
 	if (!stdout)
 		return;
 
-	for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
+	for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
 		if (np == stdout)
 			break;
 	}