blob: dafe7fcf9df3be45f57652a6ad9afdd4001a6480 [file] [log] [blame]
#!/usr/bin/env python3
# Copyright (c) 2022 Kumar Gala <>
# SPDX-License-Identifier: Apache-2.0
import argparse
import os
import sys
import re
import yaml
# Use the C LibYAML parser if available, rather than the Python parser.
from yaml import CLoader as Loader
except ImportError:
from yaml import Loader # type: ignore
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'python-devicetree',
def binding_paths(bindings_dirs):
# Returns a list with the paths to all bindings (.yaml files) in
# 'bindings_dirs'
binding_paths = []
for bindings_dir in bindings_dirs:
for root, _, filenames in os.walk(bindings_dir):
for filename in filenames:
if filename.endswith(".yaml") or filename.endswith(".yml"):
binding_paths.append(os.path.join(root, filename))
return binding_paths
def parse_args():
# Returns parsed command-line arguments
parser = argparse.ArgumentParser()
parser.add_argument("--kconfig-out", required=True,
help="path to write the Kconfig file")
parser.add_argument("--bindings-dirs", nargs='+', required=True,
help="directory with bindings in YAML format, "
"we allow multiple")
return parser.parse_args()
def printfile(s):
print(s, file=kconfig_file)
def str2ident(s):
# Converts 's' to a form suitable for (part of) an identifier
return re.sub('[-,.@/+]', '_', s.upper())
def compat2kconfig(compat):
compat_ident = str2ident(compat)
printfile(f'DT_COMPAT_{compat_ident} := {compat}')
printfile(f'config DT_HAS_{compat_ident}_ENABLED')
printfile(f'\tdef_bool $(dt_compat_enabled,$(DT_COMPAT_{compat_ident}))')
def main():
global kconfig_file
args = parse_args()
compat_list = []
for binding_path in binding_paths(args.bindings_dirs):
with open(binding_path, encoding="utf-8") as f:
contents =
# Parsed PyYAML output (Python lists/dictionaries/strings/etc.,
# representing the file)
raw = yaml.load(contents, Loader=Loader)
except yaml.YAMLError as e:
print(f"WARNING: '{binding_path}' appears in binding "
f"directories but isn't valid YAML: {e}")
if 'compatible' not in raw:
# Remove any duplicates and sort the list
compat_list = sorted(set(compat_list))
with open(args.kconfig_out, "w", encoding="utf-8") as kconfig_file:
printfile(f'# Generated devicetree Kconfig')
printfile(f'# SPDX-License-Identifier: Apache-2.0')
for c in compat_list:
if __name__ == "__main__":