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dtoc: Allow DTC environment variable to provide path to dtc

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The system device-tree compiler may not be new enough to run the tests we
use in U-Boot (e.g. with binman). Allow use of a DTC environment variable
to point to the correct dtc. If not defined, the dtc on the default PATH
is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-12-24 12:12:07 -07:00
parent 4d4db83d18
commit 3ed0de31b4
2 changed files with 6 additions and 1 deletions
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4
tools/binman/README
View File

@ -536,6 +536,10 @@ entry contents.
Most of the time such essoteric behaviour is not needed, but it can be
essential for complex images.
If you need to specify a particular device-tree compiler to use, you can define
the DTC environment variable. This can be useful when the system dtc is too
old.
History / Credits
-----------------

3
tools/dtoc/fdt_util.py
View File

@ -79,7 +79,8 @@ def EnsureCompiled(fname):
'-W', 'no-unit_address_vs_reg']
args.extend(search_list)
args.append(dts_input)
command.Run('dtc', *args)
dtc = os.environ.get('DTC') or 'dtc'
command.Run(dtc, *args)
return dtb_output
def GetInt(node, propname, default=None):