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scripts: dts: generate array values as initializer lists

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Simplify use of property values that have multiple elements by
providing all of them in an initializer list, in addition to each one
as an enumerated value.

For example if a driver requires a sequence of operations with
instance-specific delays between stages the durations can be specified
with:

    delays = <30000 20 45000>;

and the driver can use:

    static u32_t delays[] = DT_INST_0_COMPAT_DELAYS;

rather than enumerating the instances.  This is particularly useful
when the number of entries in the array varies per instance, in which
case such an initialization is not easily expressed in code.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
This commit is contained in:
Peter A. Bigot 2019-10-27 12:20:59 -05:00 • committed by Kumar Gala
commit c1c82b7570
1 changed files with 2 additions and 0 deletions
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2
scripts/dts/gen_defines.py
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@ -190,6 +190,8 @@ def write_props(node):
elif prop.type == "array": elif prop.type == "array":
for i, val in enumerate(prop.val): for i, val in enumerate(prop.val):
out_dev(node, "{}_{}".format(ident, i), val) out_dev(node, "{}_{}".format(ident, i), val)
out_dev(node, ident,
"{" + ", ".join(map(str, prop.val)) + "}")
elif prop.type == "string-array": elif prop.type == "string-array":
for i, val in enumerate(prop.val): for i, val in enumerate(prop.val):
out_dev_s(node, "{}_{}".format(ident, i), val) out_dev_s(node, "{}_{}".format(ident, i), val)