dtoc: Allow DTC environment variable to provide path to dtc
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>
diff --git a/tools/binman/README b/tools/binman/README
index 08c3e56..7f558ec 100644
--- a/tools/binman/README
+++ b/tools/binman/README
@@ -536,6 +536,10 @@
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.
+
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