Introduction 

           BPI platform MUST upgrade to Linux Kernel 6.6 so that device has latest security patches and kernel capabilities and align with Yocto 5.0 upgrade requirement. 

List of changes

S.NoLists of PR Reason
1https://github.com/rdkcentral/meta-cmf-bananapi/pull/240/commitsInitial PR to bring up board with mp4 release
2https://github.com/rdkcentral/meta-cmf-bananapi/pull/263 Device hang issue
3https://github.com/rdkcentral/meta-cmf-bananapi/pull/293Recreation of comcast patches and updated srcrev in rdk-wifi-libhostap to support MP4.2 release
4https://github.com/rdkcentral/rdk-wifi-hal/pull/425Addressed build issues of rdk-wifi-hal wrt to update of rdk-wifi-hostap srcrev
5https://github.com/rdkcentral/meta-cmf-bananapi/pull/299Device is rebooting continuously after Factory Reset on kernel 6.6 Image
6https://git01.mediatek.com/filogic/rdk-b/meta-filogic  

srcrev used for c67a32a7c8876b328a8d1eeaca213e860d85b3ce 
7https://git01.mediatek.com/filogic/rdk-b/meta-cmf-filogicsrcrev used for 211fa3d81ae19cc5c6be731d52b1aa6733336b71

BPI-R4 build instruction 


1. repo init -u https://code.rdkcentral.com/r/manifests -b kirkstone -m rdkb-bpi-extsrc.xml

a.update the below changes in manifest file (path : ~/.repo/manifests)
git diff rdkb-bpi-extsrc.xml 
diff --git a/rdkb-bpi-extsrc.xml b/rdkb-bpi-extsrc.xml
index 2425f351..34183e9e 100644
--- a/rdkb-bpi-extsrc.xml
+++ b/rdkb-bpi-extsrc.xml
@@ -10,8 +10,8 @@
     <include name="oe-layers.xml"/>
     <project name="components/opensource/OMI"/>
     <project name="components/opensource/gdbus-client"/>
-    <project name="filogic/rdk-b/meta-cmf-filogic" remote="mediatek" path="meta-cmf-filogic" revision="39973f0b37b6afef2be10640bedd9efb359530df"/>
-    <project name="filogic/rdk-b/meta-filogic" remote="mediatek" path="meta-filogic" revision="4d1a2a549791f1d57c83d8be89927aed647b62ea"/>
+    <project name="filogic/rdk-b/meta-cmf-filogic" remote="mediatek" path="meta-cmf-filogic" revision="211fa3d81ae19cc5c6be731d52b1aa6733336b71"/>
+    <project name="filogic/rdk-b/meta-filogic" remote="mediatek" path="meta-filogic" revision="c67a32a7c8876b328a8d1eeaca213e860d85b3ce"/>

2.repo sync -j`nproc` --no-clone-bundle

#CP the below change in meta-cmf-bananapi
https://github.com/rdkcentral/meta-cmf-bananapi/pull/293
 
3.MACHINE=bananapi4-rdk-broadband KERNEL_TYPE=kernel6-6 source meta-cmf-bananapi/setup-environment-refboard-rdkb
 
#to CP the below change for rdk-wifi-hal
https://github.com/rdkcentral/rdk-wifi-hal/pull/425


#to download the bl2.img, bl2_B.img, fip.bin and fip_B.bin, please use below command
wget  https://artifactory.rdkcentral.com/artifactory/RDKB-Platform/BPI-R4/uboot-2025.01/bpi-r4_sdmmc_bl2_B_6-6.img  https://artifactory.rdkcentral.com/artifactory/RDKB-Platform/BPI-R4/uboot-2025.01/bpi-r4_sdmmc_fip_B_6-6.bin https://artifactory.rdkcentral.com/artifactory/RDKB-Platform/BPI-R4/uboot-2025.01/bpi-r4_sdmmc_bl2_6-6.img  https://artifactory.rdkcentral.com/artifactory/RDKB-Platform/BPI-R4/uboot-2025.01/bpi-r4_sdmmc_fip_6-6.bin
 
4.bitbake rdk-generic-broadband-image


Flashing instructions(SD card)

Copy *.wic.bz2 from build machine (image path is ~/build-bananapi4-rdk-broadband/tmp/deploy/images/bananapi4-rdk-broadband/)

bzip2 -d <Path to ImageName.wic.bz2>
sudo -E bmaptool copy --nobmap <Path to ImageName.wic> <Path to SD card device file>

References

https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/refs/heads/master/autobuild/unified/#wi_fi-7-latest-release-version-filogic-880_860_850-wifi7-mp4_2-release-2025_09_12-wifi-package-version

Feature validation : Kernel 6.6 migration in Banana pi R4

Jira :