(with title it's better ;) Hi, The goal of this series is to add device tree build information in dtb. This information can be dtb build date, where devicetree files come from, who built the dtb ... Actually, same kind of information that you can find in the Linux banner which is printout during kernel boot. Having the same kind of information for device tree is useful for debugging and maintenance. A file (dtb-build.txt) containing a string with build information (e.g., >From Linux 5.5.0-rc1 by alex the Mon Jan 13 18:25:38 CET 2020) is generated by "gen_dtb_build_info.sh" script. This file has to be included manually in each dts file that would like to use this build information. of/fdt.c is modified to printout "build-info" property during Kernel boot and scripts/Makefile.lib is modified to call "gen_dtb_build_info.sh" script. Patch 1 & 2 script and of/fdt.c updates Patch 3 is an example of use in stm32mp157c-dk2.dts file. Patch 4 is a tentative to make it automatic (not yet 100% functional). regards Alex Changes since v1; - Remove modification in dtc (no more -B option) - Generate a file containing build info which is directly included in dts file. Regards Alex Alexandre Torgue (4): scripts: Add script to generate dtb build information of: fdt: print dtb build information ARM: dts: stm32: Add dtb build information entry for stm32mp157c-dk2 script: make automatic dtb build info generation arch/arm/boot/dts/stm32mp157c-dk2.dts | 1 + drivers/of/fdt.c | 9 +++++++++ scripts/Makefile.lib | 3 +++ scripts/gen_dtb_build_info.sh | 12 ++++++++++++ 4 files changed, 25 insertions(+) create mode 100755 scripts/gen_dtb_build_info.sh -- 2.17.1
