diff --git a/meta-raspberrypi/.gitignore b/meta-raspberrypi/.gitignore
index 073cf06..d8d50e0 100644
--- a/meta-raspberrypi/.gitignore
+++ b/meta-raspberrypi/.gitignore
@@ -6,3 +6,4 @@
 *.log
 docs/_build
 /layers
+*.pyc
diff --git a/meta-raspberrypi/conf/layer.conf b/meta-raspberrypi/conf/layer.conf
index aa3174a..0f08196 100644
--- a/meta-raspberrypi/conf/layer.conf
+++ b/meta-raspberrypi/conf/layer.conf
@@ -9,7 +9,7 @@
 BBFILE_PATTERN_raspberrypi := "^${LAYERDIR}/"
 BBFILE_PRIORITY_raspberrypi = "9"
 
-LAYERSERIES_COMPAT_raspberrypi = "gatesgarth hardknott"
+LAYERSERIES_COMPAT_raspberrypi = "hardknott honister"
 
 # Additional license directories.
 LICENSE_PATH += "${LAYERDIR}/files/custom-licenses"
diff --git a/meta-raspberrypi/conf/machine/include/rpi-base.inc b/meta-raspberrypi/conf/machine/include/rpi-base.inc
index 8b33a0f..572fe22 100644
--- a/meta-raspberrypi/conf/machine/include/rpi-base.inc
+++ b/meta-raspberrypi/conf/machine/include/rpi-base.inc
@@ -15,6 +15,7 @@
     "
 
 RPI_KERNEL_DEVICETREE_OVERLAYS ?= " \
+    overlays/overlay_map.dtb \
     overlays/at86rf233.dtbo \
     overlays/disable-bt.dtbo \
     overlays/dwc2.dtbo \
@@ -44,6 +45,7 @@
     overlays/rpi-poe.dtbo \
     overlays/vc4-fkms-v3d.dtbo \
     overlays/vc4-kms-v3d.dtbo \
+    overlays/vc4-kms-v3d-pi4.dtbo \
     overlays/vc4-kms-dsi-7inch.dtbo \
     overlays/w1-gpio.dtbo \
     overlays/w1-gpio-pullup.dtbo \
@@ -110,17 +112,17 @@
 
     def transform(dtb):
         base = os.path.basename(dtb)
-        if dtb.endswith('dtb'):
-            # eg: whatever/bcm2708-rpi-b.dtb has:
-            #     DEPLOYDIR file: bcm2708-rpi-b.dtb
-            #     destination: bcm2708-rpi-b.dtb
-            return base
-        elif dtb.endswith('dtbo'):
+        if dtb.endswith('dtbo') or base == 'overlay_map.dtb':
             # overlay dtb:
             # eg: overlays/hifiberry-amp.dtbo has:
             #     DEPLOYDIR file: hifiberry-amp.dtbo
             #     destination: overlays/hifiberry-amp.dtbo
             return '{};{}'.format(base, dtb)
+        elif dtb.endswith('dtb'):
+            # eg: whatever/bcm2708-rpi-b.dtb has:
+            #     DEPLOYDIR file: bcm2708-rpi-b.dtb
+            #     destination: bcm2708-rpi-b.dtb
+            return base
 
     return ' '.join([transform(dtb) for dtb in alldtbs.split(' ') if dtb])
 
diff --git a/meta-raspberrypi/conf/machine/include/tune-arm1176jzf-s.inc b/meta-raspberrypi/conf/machine/include/tune-arm1176jzf-s.inc
index b6fcc59..b9e0377 100644
--- a/meta-raspberrypi/conf/machine/include/tune-arm1176jzf-s.inc
+++ b/meta-raspberrypi/conf/machine/include/tune-arm1176jzf-s.inc
@@ -1,15 +1,17 @@
-DEFAULTTUNE ?= "armv6"
+DEFAULTTUNE ?= "arm1176jzfshf"
 
 require conf/machine/include/arm/arch-armv6.inc
 
 TUNEVALID[arm1176jzfs] = "Enable arm1176jzfs specific processor optimizations"
-TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "arm1176jzfs", "-mtune=arm1176jzf-s", "", d)}"
-TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "vfp", "-mfpu=vfp", "", d)}"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'arm1176jzfs', ' -mcpu=arm1176jzf-s', '', d)}"
+MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'arm1176jzfs', 'armv6:', '', d)}"
 
-AVAILTUNES += "arm1176jzfs arm1176jzfshf"
+AVAILTUNES += "arm1176jzfs"
 ARMPKGARCH_tune-arm1176jzfs = "arm1176jzfs"
-ARMPKGARCH_tune-arm1176jzfshf = "arm1176jzfs"
-TUNE_FEATURES_tune-arm1176jzfs = "${TUNE_FEATURES_tune-armv6} arm1176jzfs"
+TUNE_FEATURES_tune-arm1176jzfs = "arm thumb vfp arm1176jzfs"
+PACKAGE_EXTRA_ARCHS_tune-arm1176jzfs = "${PACKAGE_EXTRA_ARCHS_tune-armv6} arm1176jzfs"
+
+AVAILTUNES += "arm1176jzfshf"
+ARMPKGARCH_tune-arm1176jzfshf = "${ARMPKGARCH_tune-arm1176jzfs}"
 TUNE_FEATURES_tune-arm1176jzfshf = "${TUNE_FEATURES_tune-arm1176jzfs} callconvention-hard"
-PACKAGE_EXTRA_ARCHS_tune-arm1176jzfs = "${PACKAGE_EXTRA_ARCHS_tune-armv6}"
-PACKAGE_EXTRA_ARCHS_tune-arm1176jzfshf = "${PACKAGE_EXTRA_ARCHS_tune-armv6hf} arm1176jzfshf-vfp"
+PACKAGE_EXTRA_ARCHS_tune-arm1176jzfshf = "${PACKAGE_EXTRA_ARCHS_tune-armv6thf} arm1176jzfshf-vfp"
diff --git a/meta-raspberrypi/recipes-bsp/common/raspberrypi-firmware.inc b/meta-raspberrypi/recipes-bsp/common/raspberrypi-firmware.inc
index 591c615..5cebd7c 100644
--- a/meta-raspberrypi/recipes-bsp/common/raspberrypi-firmware.inc
+++ b/meta-raspberrypi/recipes-bsp/common/raspberrypi-firmware.inc
@@ -1,9 +1,9 @@
-RPIFW_DATE ?= "20210205"
-SRCREV ?= "7d91570f20378afc9414107dccdad70705a8a342"
+RPIFW_DATE ?= "20210225"
+SRCREV ?= "5985247fb75681985547641d66196c77499f26b9"
 RPIFW_SRC_URI ?= "https://github.com/raspberrypi/firmware/archive/${SRCREV}.tar.gz;downloadfilename=raspberrypi-firmware-${SRCREV}.tar.gz"
 RPIFW_S ?= "${WORKDIR}/firmware-${SRCREV}"
 
 SRC_URI = "${RPIFW_SRC_URI}"
-SRC_URI[sha256sum] = "2cc9bf2cbcab8283db2eb53ed2a49372b70fe76538994c32f6d261e2da3e9ff4"
+SRC_URI[sha256sum] = "3e2c00e1473bd70e808134925e1b25cd765789d9f0e0683749135b124d835000"
 
 PV = "${RPIFW_DATE}"
diff --git a/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_5.10.bb b/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_5.10.bb
index 6af434e..56c7621 100644
--- a/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_5.10.bb
+++ b/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_5.10.bb
@@ -1,7 +1,7 @@
-LINUX_VERSION ?= "5.10.13"
+LINUX_VERSION ?= "5.10.17"
 LINUX_RPI_BRANCH ?= "rpi-5.10.y"
 
-SRCREV_machine = "34263dc81a12862c66e2593bb26c09d5fd20f46d"
+SRCREV_machine = "ec967eb45f8d4ed59bebafb5748da38118383be7"
 SRCREV_meta = "5833ca701711d487c9094bd1efc671e8ef7d001e"
 
 KMETA = "kernel-meta"