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Date:   Mon, 29 Jun 2020 16:01:17 -0600
From:   Rob Herring <robh@kernel.org>
To:     Sungbo Eo <mans0n@gorani.run>
Cc:     linux-gpio@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        Linus Walleij <linus.walleij@linaro.org>
Subject: Re: [PATCH v2 2/2] dt-bindings: gpio: Add bindings for NXP PCA9570
Message-ID: <20200629220117.GA3012245@bogus>
References: <20200625075957.364273-1-mans0n@gorani.run>
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On Thu, 25 Jun 2020 16:59:57 +0900, Sungbo Eo wrote:
> This patch adds device tree bindings for the NXP PCA9570,
> a 4-bit I2C GPO expander.
> 
> Signed-off-by: Sungbo Eo <mans0n@gorani.run>
> ---
> I don't feel I can really maintain this driver, but it seems all yaml docs
> have a maintainers field so I just added it...
> ---
>  .../bindings/gpio/gpio-pca9570.yaml           | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml
> 


My bot found errors running 'make dt_binding_check' on your patch:

Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dts:21.13-26: Warning (reg_format): /example-0/gpio@24:reg: property has invalid length (4 bytes) (#address-cells == 1, #size-cells == 1)
Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: Warning (pci_device_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: Warning (simple_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/gpio/gpio-pca9570.example.dt.yaml: example-0: gpio@24:reg:0: [36] is too short


See https://patchwork.ozlabs.org/patch/1316796

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

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.