v5: modifications after more review * Added an Upstream-Status to the kernel patch * Only one instance of KERNEL_DEVICETREE defined (with the new .dtbo syntax) * Modification of the KERNEL_DEVICETREE is done in linux-raspberry-base.bbclass, based on the kernel version v4: rebased For kernels 4.4.9+, the behavior for the device tree overlays loading has been modified on RaspberryPi. For overlays, it loads .dtbo files, not .dtb anymore. Also, it does not check for -overlay extension, so the name of the overlay that is placed in the "overlays" directory must be <overlay_name>.dtbo, instead of <overlay_name>-overlay.dtb.
This patch addresses the issue for kernels 4.4+, while keeping the same behavior for older kernels. This patch must be used in conjunction with another patch to meta/recipes-kernel/linux-dtb.inc, which will allow the processing of .dtbo files for overlays, instead of only .dtb like before. .dtb are still in use, but only for the "real" device trees (not the overlays). Herve Jourdain (4): linux-raspberrypi_4.4.inc: support for .dtbo files for dtb overlays rpi-base.inc: support for .dtbo files for dtb overlays linux-raspberrypi-base.bbclass: support for .dtbo files for dtb overlays sdcard_image-rpi.bbclass: support for .dtbo files for dtb overlays classes/linux-raspberrypi-base.bbclass | 19 ++++++---- classes/sdcard_image-rpi.bbclass | 15 +++++--- conf/machine/include/rpi-base.inc | 30 +++++++-------- .../0001-fix-dtbo-rules.patch | 44 ++++++++++++++++++++++ recipes-kernel/linux/linux-raspberrypi_4.4.bb | 1 + 5 files changed, 81 insertions(+), 28 deletions(-) create mode 100644 recipes-kernel/linux/linux-raspberrypi-4.4/0001-fix-dtbo-rules.patch -- 2.7.4 -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto