diff --git a/Makefile b/Makefile
index 7779f44..e181285 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,7 @@ buildroot/output/images/rootfs.cpio.gz:
 build/rootfs.cpio.gz: buildroot/output/images/rootfs.cpio.gz | build
 	cp $< $@
 
-build/m2k.itb: u-boot-xlnx/tools/mkimage build/zImage build/rootfs.cpio.gz build/zynq-m2k-reva.dtb build/system_top.bit
+build/m2k.itb: u-boot-xlnx/tools/mkimage build/zImage build/rootfs.cpio.gz build/zynq-m2k-reva.dtb build/zynq-m2k-revb.dtb build/system_top.bit
 	u-boot-xlnx/tools/mkimage -f scripts/m2k.its $@
 
 build/system_top.hdf:  | build
diff --git a/buildroot b/buildroot
index 50c07c5..6a099c7 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 50c07c5ec0021653b8b44b6c33c2fb0da381ebcf
+Subproject commit 6a099c77840ea2eca66096d502bdd7f428511c20
diff --git a/hdl b/hdl
index 7cff121..99e8aa3 160000
--- a/hdl
+++ b/hdl
@@ -1 +1 @@
-Subproject commit 7cff12107ef7e85aa6677a7eb0696e2e02c2c65c
+Subproject commit 99e8aa385a1f8187482d43da210db4b25f0d7db6
diff --git a/linux b/linux
index 751f62f..e4025f7 160000
--- a/linux
+++ b/linux
@@ -1 +1 @@
-Subproject commit 751f62f1a1faee432d706db37f3864da396c5e02
+Subproject commit e4025f7da76d744664d9dfcbf74b4098966e00db
diff --git a/scripts/m2k.its b/scripts/m2k.its
index 589638a..f8e8e4b 100644
--- a/scripts/m2k.its
+++ b/scripts/m2k.its
@@ -23,6 +23,14 @@
 			compression = "none";
 		};
 
+		fdt@2 {
+			description = "zynq-m2k-revb";
+			data = /incbin/("../build/zynq-m2k-revb.dtb");
+			type = "flat_dt";
+			arch = "arm";
+			compression = "none";
+		};
+
 		fpga@1 {
 			description = "FPGA";
 			data = /incbin/("../build/system_top.bit");
@@ -130,15 +138,15 @@
 			fpga = "fpga@1";
 		};
 
-		config@8 {
-			description = "Linux with fpga RevA";
-			fdt = "fdt@1";
+		config@8 { /* RevB */
+			description = "Linux with fpga Revb";
+			fdt = "fdt@2";
 			kernel = "linux_kernel@1";
 			ramdisk = "ramdisk@1";
 			fpga = "fpga@1";
 		};
 
-		config@9 { /* This one is actually RevA */
+		config@9 { /* RevA */
 			description = "Linux with fpga RevA";
 			fdt = "fdt@1";
 			kernel = "linux_kernel@1";