diff --git a/.gitmodules b/.gitmodules
index 2c4a18c..20509fa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "buildroot"]
 	path = buildroot
+	branch = 2015.11.1-op-build
 	url = https://github.com/open-power/buildroot
diff --git a/buildroot b/buildroot
index b7193dd..3c8df8b 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit b7193dd9805cd4394ab3b7c7a9d1348032edf477
+Subproject commit 3c8df8b8a7e9151a51b84296b73644786b21f7f1
diff --git a/openpower/configs/firestone_defconfig b/openpower/configs/firestone_defconfig
index 110bd42..211b99d 100644
--- a/openpower/configs/firestone_defconfig
+++ b/openpower/configs/firestone_defconfig
@@ -43,8 +43,9 @@
 BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_VERSION="4.2.6"
+BR2_LINUX_KERNEL_SAME_AS_HEADERS=y
 BR2_KERNEL_HEADERS_4_2=y
+BR2_DEFAULT_KERNEL_HEADERS="4.2.6"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
@@ -52,7 +53,7 @@
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4=y
+BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
 BR2_PACKAGE_I2C_TOOLS=y
 BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_DROPBEAR=y
diff --git a/openpower/configs/garrison_defconfig b/openpower/configs/garrison_defconfig
index db940b0..1a95416 100644
--- a/openpower/configs/garrison_defconfig
+++ b/openpower/configs/garrison_defconfig
@@ -45,8 +45,9 @@
 BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_VERSION="4.2.6"
+BR2_LINUX_KERNEL_SAME_AS_HEADERS=y
 BR2_KERNEL_HEADERS_4_2=y
+BR2_DEFAULT_KERNEL_HEADERS="4.2.6"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
@@ -54,7 +55,7 @@
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4=y
+BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
 BR2_PACKAGE_I2C_TOOLS=y
 BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_DROPBEAR=y
diff --git a/openpower/configs/habanero_defconfig b/openpower/configs/habanero_defconfig
index f7bbf68..6ccb972 100644
--- a/openpower/configs/habanero_defconfig
+++ b/openpower/configs/habanero_defconfig
@@ -43,8 +43,9 @@
 BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_VERSION="4.2.6"
+BR2_LINUX_KERNEL_SAME_AS_HEADERS=y
 BR2_KERNEL_HEADERS_4_2=y
+BR2_DEFAULT_KERNEL_HEADERS="4.2.6"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
@@ -52,7 +53,7 @@
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4=y
+BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
 BR2_PACKAGE_I2C_TOOLS=y
 BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_DROPBEAR=y
diff --git a/openpower/configs/openpower_mambo_defconfig b/openpower/configs/openpower_mambo_defconfig
index ea50756..82fe9e5 100644
--- a/openpower/configs/openpower_mambo_defconfig
+++ b/openpower/configs/openpower_mambo_defconfig
@@ -31,8 +31,9 @@
 BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_VERSION="4.2.6"
+BR2_LINUX_KERNEL_SAME_AS_HEADERS=y
 BR2_KERNEL_HEADERS_4_2=y
+BR2_DEFAULT_KERNEL_HEADERS="4.2.6"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
@@ -40,7 +41,7 @@
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4=y
+BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
 BR2_PACKAGE_I2C_TOOLS=y
 BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_DROPBEAR=y
diff --git a/openpower/configs/palmetto_defconfig b/openpower/configs/palmetto_defconfig
index 07fc849..6942589 100644
--- a/openpower/configs/palmetto_defconfig
+++ b/openpower/configs/palmetto_defconfig
@@ -42,8 +42,9 @@
 BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var"
 BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_VERSION="4.2.6"
+BR2_LINUX_KERNEL_SAME_AS_HEADERS=y
 BR2_KERNEL_HEADERS_4_2=y
+BR2_DEFAULT_KERNEL_HEADERS="4.2.6"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
@@ -51,7 +52,7 @@
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4=y
+BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
 BR2_PACKAGE_I2C_TOOLS=y
 BR2_PACKAGE_NCURSES_WCHAR=y
 BR2_PACKAGE_DROPBEAR=y