linux-kernel - Re: [PATCH v3 1/2] dt-bindings: pwm: Add Xilinx AXI Timer

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Date:   Wed, 12 May 2021 13:35:16 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sean Anderson <sean.anderson@...o.com>
Cc:     michal.simek@...inx.com, linux-pwm@...r.kernel.org,
        Alvaro Gamez <alvaro.gamez@...ent.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 1/2] dt-bindings: pwm: Add Xilinx AXI Timer

On Tue, 11 May 2021 15:12:37 -0400, Sean Anderson wrote:
> This adds a binding for the Xilinx LogiCORE IP AXI Timer. This device is
> a "soft" block, so it has many parameters which would not be
> configurable in most hardware. This binding is usually automatically
> generated by Xilinx's tools, so the names and values of some properties
> must be kept as they are. Replacement properties have been provided for
> new device trees.
> 
> Because we need to init timer devices so early in boot, the easiest way
> to configure things is to use a device tree property. For the moment
> this is 'xlnx,pwm', but this could be extended/renamed/etc. in the
> future if these is a need for a generic property.
> 
> Signed-off-by: Sean Anderson <sean.anderson@...o.com>
> ---
> How should the clocking situation be documented? For the moment I have
> just left clock as optional, but should clock-frequency be documented?
> 
> Changes in v3:
> - Mark all boolean-as-int properties as deprecated
> - Add xlnx,pwm and xlnx,gen?-active-low properties.
> - Make newer replacement properties mutually-exclusive with what they
>   replace
> - Add an example with non-deprecated properties only.
> 
> Changes in v2:
> - Use 32-bit addresses for example binding
> 
>  .../bindings/pwm/xlnx,axi-timer.yaml          | 142 ++++++++++++++++++
>  1 file changed, 142 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/xlnx,axi-timer.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/pwm/xlnx,axi-timer.yaml:16:9: [warning] wrong indentation: expected 10 but found 8 (indentation)

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/pwm/xlnx,axi-timer.example.dts:49.37-57.11: ERROR (duplicate_label): /example-1/timer@...e0000: Duplicate label 'axi_timer_0' on /example-1/timer@...e0000 and /example-0/timer@...e0000
ERROR: Input tree has errors, aborting (use -f to force output)
make[1]: *** [scripts/Makefile.lib:380: Documentation/devicetree/bindings/pwm/xlnx,axi-timer.example.dt.yaml] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1416: dt_binding_check] Error 2

See https://patchwork.ozlabs.org/patch/1477288

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.