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    SubjectRe: [PATCH v4 04/15] dt-bindings: gpio: Add AXP192 GPIO bindings
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    Date
    On 6/29/22 9:30 AM, Aidan MacDonald wrote:
    > The AXP192 PMIC is different enough from the PMICs supported by
    > the AXP20x GPIO driver to warrant a separate driver. The AXP192
    > driver also supports interrupts and pinconf settings.
    >
    > Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
    > ---
    > .../bindings/gpio/x-powers,axp192-gpio.yaml | 68 +++++++++++++++++++
    > 1 file changed, 68 insertions(+)
    > create mode 100644 Documentation/devicetree/bindings/gpio/x-powers,axp192-gpio.yaml
    >
    > diff --git a/Documentation/devicetree/bindings/gpio/x-powers,axp192-gpio.yaml b/Documentation/devicetree/bindings/gpio/x-powers,axp192-gpio.yaml
    > new file mode 100644
    > index 000000000000..ceb94aa2bc97
    > --- /dev/null
    > +++ b/Documentation/devicetree/bindings/gpio/x-powers,axp192-gpio.yaml
    > [...]
    > +
    > +required:
    > + - compatible
    > + - "#gpio-cells"
    > + - gpio-controller
    > + - gpio-ranges

    By requiring the gpio-ranges property, you will not be able to convert the
    existing driver, as existing devicetrees do not have it.

    If you instead call pinctrl_add_gpio_range() from the driver, you can maintain
    compatibility with the existing binding.

    Regards,
    Samuel

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