devicetree: support DT_PROP_LEN() on phandle and string
It will be convenient to treat these respectively as degenerate cases
of 'phandles' and 'string-array'. Add support for this and regression
tests. (There's nothing to do in the case of 'phandle' beyond
documenting the guarantee.)
For the record, the other DT_PROP_LEN() tests for each type are in:
type test case property
------------ -------------------- ------------
array test_arrays a
string-array test_path_props compatible
uint8-array test_arrays b
phandles test_phandles phs
phandle-array test_phandles pha-gpios
phandle test_phandles ph
Update docstrings and fix some issues in them.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
diff --git a/scripts/dts/gen_defines.py b/scripts/dts/gen_defines.py
index 1b01acd..31a02c0 100755
--- a/scripts/dts/gen_defines.py
+++ b/scripts/dts/gen_defines.py
@@ -799,7 +799,9 @@
# with a build error. This forces users to switch to the right
# macros.
- if prop.type == "phandle":
+ if prop.type in ["phandle", "string"]:
+ # phandle is treated as a phandles of length 1.
+ # string is treated as a string-array of length 1.
return 1
if (prop.type in ["array", "uint8-array", "string-array",
