cli: Add command "dts-check"

Validates the dts/dtb file for the selected board and outputs the validation logs to the user.
This can be used when adding a new board, developing or improving a dts file. Should lead to higher quality device trees and patches overall, if used.

lib/functions/compilation/kernel-dts-check.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+#
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2013-2024 Igor Pecovnik, igor@armbian.com
+#
+# This file is a part of the Armbian Build Framework
+# https://github.com/armbian/build/
+
+
+# Validate the dts/dtb file against dt bindings found in "linux/Documentation/devicetree/bindings/"
+# See slide 15 in https://elinux.org/images/1/17/How_to_Get_Your_DT_Schema_Bindings_Accepted_in_Less_than_10_Iterations_-_Krzysztof_Kozlowski%2C_Linaro_-_ELCE_2023.pdf
+function validate_dts() {
+    [[ -z "${BOOT_FDT_FILE}" ]] && exit_with_error "BOOT_FDT_FILE not set! No dts file to validate."
+    display_alert "Validating dts/dtb file for selected board" "${BOOT_FDT_FILE} ; see output below" "info"
+
+    # "make CHECK_DTBS=y" uses the pip modules "dtschema" and "yamllint"
+    prepare_python_and_pip
+
+    # Run "make CHECK_DTBS=y" for the selected board's dtb file
+	run_kernel_make "CHECK_DTBS=y ${BOOT_FDT_FILE}"
+}