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fdt: Make it easier to debug u-boot.dtsi files

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At present one must hack the Makefile to see what is going on with these
files. Also it doesn't quite work correctly.

Fix this by using an environment variable for debugging. Update the docs
also.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-12-16 20:59:23 -07:00 committed by Tom Rini
parent 8e0768124f
commit ed96683e00
2 changed files with 10 additions and 6 deletions
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4
scripts/Makefile.lib
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@ -175,7 +175,9 @@ u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
# Uncomment for debugging
# This shows all the files that were considered and the one that we chose.
# u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
ifdef DEVICE_TREE_DEBUG
u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
endif
# We use the first match
u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \

12
tools/binman/binman.rst
View File

@ -790,12 +790,14 @@ Binman will search for the following files in arch/<arch>/dts::
U-Boot will only use the first one that it finds. If you need to include a
more general file you can do that from the more specific file using #include.
If you are having trouble figuring out what is going on, you can uncomment
the 'warning' line in scripts/Makefile.lib to see what it has found::
If you are having trouble figuring out what is going on, you can use
`DEVICE_TREE_DEBUG=1` with your build::
# Uncomment for debugging
# This shows all the files that were considered and the one that we chose.
# u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
make DEVICE_TREE_DEBUG=1
scripts/Makefile.lib:334: Automatic .dtsi inclusion: options:
arch/arm/dts/juno-r2-u-boot.dtsi arch/arm/dts/-u-boot.dtsi
arch/arm/dts/armv8-u-boot.dtsi arch/arm/dts/armltd-u-boot.dtsi
arch/arm/dts/u-boot.dtsi ... found: "arch/arm/dts/juno-r2-u-boot.dtsi"
Updating an ELF file