tools: binman: ti_board_cfg: Check for linting problems

Use yamllint for checking whether YAML configuration files are adhering
to default yamllint rules.

Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
Suggested-by: Nishanth Menon <nm@ti.com>

tools/binman/etype/ti_board_config.py

@@ -9,6 +9,7 @@
 import os
 import struct
 import yaml
+import yamllint
 
 from collections import OrderedDict
 from jsonschema import validate
@@ -18,6 +19,7 @@ from binman.entry import Entry
 from binman.etype.section import Entry_section
 from dtoc import fdt_util
 from u_boot_pylib import tools
+from yamllint import config
 
 BOARDCFG = 0xB
 BOARDCFG_SEC = 0xD
@@ -244,6 +246,9 @@ class Entry_ti_board_config(Entry_section):
             with open(self._schema_file, 'r') as sch:
                 self.schema_yaml = yaml.safe_load(sch)
 
+            yaml_config = config.YamlLintConfig("extends: default")
+            for p in yamllint.linter.run(open(self._config_file, "r"), yaml_config):
+                self.Raise(f"Yamllint error: {p.line}: {p.rule}")
             try:
                 validate(self.file_yaml, self.schema_yaml)
             except Exception as e:

tools/binman/ftest.py

@@ -7030,6 +7030,12 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         data = self._DoReadFile('293_ti_board_cfg.dts')
         self.assertEqual(TI_BOARD_CONFIG_DATA, data)
 
+    def testTIBoardConfigLint(self):
+        """Test that an incorrectly linted config file would generate error"""
+        with self.assertRaises(ValueError) as e:
+            data = self._DoReadFile('323_ti_board_cfg_phony.dts')
+        self.assertIn("Yamllint error", str(e.exception))
+
     def testTIBoardConfigCombined(self):
         """Test that a schema validated combined board config file can be generated"""
         data = self._DoReadFile('294_ti_board_cfg_combined.dts')

tools/binman/test/323_ti_board_cfg_phony.dts

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		ti-board-config {
+			config = "yaml/config_phony.yaml";
+			schema = "yaml/schema.yaml";
+		};
+	};
+};

tools/binman/test/yaml/config_phony.yaml

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Test config
+#
+---
+
+main-branch :
+  obj :
+    a : 0x0
+    b: 0
+  arr: [0, 0, 0, 0]
+  another-arr:
+    -  # 1
+      c: 0
+      d: 0
+    -  # 2
+      c: 0
+      d: 0

tools/buildman/requirements.txt

@@ -1,2 +1,3 @@
 jsonschema==4.17.3
 pyyaml==6.0
+yamllint==1.26.3