linux - How to load device tree overlay on kernel 3.19+ -


kernel 3.19 (re-)introduced device tree overlays. on linux kernel 3.19.4, via fedora (3.19.4-200.fc21.armv7hl).

i have overlay file overlay.dts described in documentation.

overlay.c contains functions work overlays, including functions load overlay.

does kernel check paths overlays load? if so, where? if not, how can load overlay?

from experience (3.8-3.14), dtb loading jurisdiction of boot-loader, rather kernel itself. i've used u-boot - u-boot can load compiled device-tree file (man dtc) ext2-based filesystem known location in ram, specified in kernel command line.

which boot-loader using?


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