scripts: add wrapper script to generate pinctrl groups

Add wrapper script capable of generating pinctrl groups for iMX RT
parts from MEX files, that uses the rt_cfg_utils library

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

mcux/scripts/rt_gen_dts.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+
+"""
+Wrapper around rt_cfg_utils.py to provide arguments to module
+"""
+import argparse
+import datetime
+import re
+import pathlib
+import sys
+
+import rt_cfg_utils
+
+
+HELPSTR = """
+Processes NXP iMX.RT MEX configuration files
+
+Given a mex file, generates the board level pinctrl groups required for
+Zephyr. Only supports iMX.RT parts.
+
+This tool is intended to be used with the configuration data downloaded
+from NXP's website. One way to extract this config data is to use the
+MCUXpresso configuration tool to download processor defintions, locate
+those defintions on the disk. Alternatively, individual processor config
+data packs can be downloaded from the MCUXpresso SDK builder tool. Either way,
+the path to the 'processors' directory must be provided as the 'cfg-tool-root'
+parameter.
+"""
+
+
+parser = argparse.ArgumentParser(description=HELPSTR,
+        formatter_class=argparse.RawDescriptionHelpFormatter)
+parser.add_argument('mex_file', metavar = 'MEX',
+                    type=str, help='path to source MEX file')
+parser.add_argument('--cfg-tool-root', metavar = 'CFG_TOOL', type=str,
+                    help='Path to root of MCUXpresso processors directory')
+parser.add_argument('--copyright', action='store_true',
+                    help='Enable default NXP copyright')
+parser.add_argument('--board-output', metavar = 'BOARD_OUT', type=str,
+                    help='Output path for board level DTS file')
+
+args = parser.parse_args()
+
+board_name = rt_cfg_utils.get_board_name(args.mex_file)
+processor_name = rt_cfg_utils.get_processor_name(args.mex_file)
+package_name = rt_cfg_utils.get_package_name(args.mex_file)
+soc_name = re.match(r'MIMXRT[0-9]+', processor_name).group(0)
+
+# Set defaults for optional arguments
+if not args.board_output:
+    args.board_output = f"{board_name.lower().replace('-', '_')}-pinctrl.dtsi"
+elif pathlib.Path(args.board_output).is_dir():
+    # Add default name for file onto end of folder
+    args.board_output = (str(pathlib.Path(args.board_output)) +
+        f"/{board_name.lower().replace('-', '_')}-pinctrl.dtsi")
+
+if not args.cfg_tool_root:
+    print("configuration tool root argument ('--cfg-tool-root') is required!")
+    sys.exit(1)
+proc_root = pathlib.Path(args.cfg_tool_root) / processor_name / 'ksdk2_0' / package_name
+if not proc_root.is_dir():
+    print(f"Configuration tool root path {args.cfg_tool_root} is invalid")
+    sys.exit(2)
+
+
+if args.copyright:
+    # Add default copyright
+    COPYRIGHT = (f"Copyright (c) {datetime.datetime.today().year}, NXP\n"
+    f" * SPDX-License-Identifier: Apache-2.0")
+else:
+    COPYRIGHT = ''
+util = rt_cfg_utils.NXPSdkUtil(str(proc_root), copyright_header= COPYRIGHT)
+print(f"Generating configuration for {board_name}")
+util.write_pinctrl_groups(args.mex_file, args.board_output)
+print(f"Wrote pinctrl dts file to {args.board_output}")