Re: [PATH 3/4] dt-bindings: display: Add virtual DRM

[Rob Herring <robh@kernel.org>]

On Mon, 21 Jun 2021 15:44:02 +0900, Tomohito Esaki wrote:
> Add device tree bindings documentation for virtual DRM.
> 
> Signed-off-by: Tomohito Esaki <etom@igel.co.jp>
> ---
>  .../devicetree/bindings/display/vdrm.yaml     | 67 +++++++++++++++++++
>  1 file changed, 67 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/vdrm.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
./Documentation/devicetree/bindings/display/vdrm.yaml:39:1: [error] syntax error: found character '\t' that cannot start any token (syntax)

dtschema/dtc warnings/errors:
make[1]: *** Deleting file 'Documentation/devicetree/bindings/display/vdrm.example.dts'
Traceback (most recent call last):
  File "/usr/local/bin/dt-extract-example", line 45, in <module>
    binding = yaml.load(open(args.yamlfile, encoding='utf-8').read())
  File "/usr/local/lib/python3.8/dist-packages/ruamel/yaml/main.py", line 434, in load
    return constructor.get_single_data()
  File "/usr/local/lib/python3.8/dist-packages/ruamel/yaml/constructor.py", line 120, in get_single_data
    node = self.composer.get_single_node()
  File "_ruamel_yaml.pyx", line 706, in _ruamel_yaml.CParser.get_single_node
  File "_ruamel_yaml.pyx", line 724, in _ruamel_yaml.CParser._compose_document
  File "_ruamel_yaml.pyx", line 775, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 889, in _ruamel_yaml.CParser._compose_mapping_node
  File "_ruamel_yaml.pyx", line 775, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 889, in _ruamel_yaml.CParser._compose_mapping_node
  File "_ruamel_yaml.pyx", line 775, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 889, in _ruamel_yaml.CParser._compose_mapping_node
  File "_ruamel_yaml.pyx", line 775, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 889, in _ruamel_yaml.CParser._compose_mapping_node
  File "_ruamel_yaml.pyx", line 775, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 889, in _ruamel_yaml.CParser._compose_mapping_node
  File "_ruamel_yaml.pyx", line 731, in _ruamel_yaml.CParser._compose_node
  File "_ruamel_yaml.pyx", line 904, in _ruamel_yaml.CParser._parse_next_event
ruamel.yaml.scanner.ScannerError: while scanning a plain scalar
  in "<unicode string>", line 38, column 15
found a tab character that violates indentation
  in "<unicode string>", line 39, column 1
make[1]: *** [Documentation/devicetree/bindings/Makefile:20: Documentation/devicetree/bindings/display/vdrm.example.dts] Error 1
make[1]: *** Waiting for unfinished jobs....
./Documentation/devicetree/bindings/display/vdrm.yaml:  while scanning a plain scalar
  in "<unicode string>", line 38, column 15
found a tab character that violates indentation
  in "<unicode string>", line 39, column 1
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/vdrm.yaml: ignoring, error parsing file
warning: no schema found in file: ./Documentation/devicetree/bindings/display/vdrm.yaml
make: *** [Makefile:1416: dt_binding_check] Error 2
\ndoc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1494913

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.