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SubjectRe: [PATCH v2 2/2] dt-bindings: pinctrl: Add bindings for Awinic AW9523/AW9523B
On Mon, Jan 11, 2021 at 07:29:28PM +0100, AngeloGioacchino Del Regno wrote:
> Add bindings for the Awinic AW9523/AW9523B I2C GPIO Expander driver.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
> ---
> .../pinctrl/awinic,aw9523-pinctrl.yaml | 112 ++++++++++++++++++
> 1 file changed, 112 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
> new file mode 100644
> index 000000000000..a705c05bb5a2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
> @@ -0,0 +1,112 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Awinic AW9523/AW9523B I2C GPIO Expander
> +
> +maintainers:
> + - AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
> +
> +description: |
> + The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function
> + I/O, 256 steps PWM mode and interrupt support.
> +
> +properties:
> + compatible:
> + const: awinic,aw9523-pinctrl
> +
> + reg:
> + maxItems: 1
> +
> + '#gpio-cells':
> + description: |
> + Specifying the pin number and flags, as defined in
> + include/dt-bindings/gpio/gpio.h
> + const: 2
> +
> + gpio-controller: true
> +
> + gpio-ranges:
> + maxItems: 1
> +
> + interrupt-controller: true
> +
> + interrupts:
> + maxItems: 1
> + description: Specifies the INTN pin IRQ.
> +
> + '#interrupt-cells':
> + description:
> + Specifies the PIN numbers and Flags, as defined in defined in
> + include/dt-bindings/interrupt-controller/irq.h
> + const: 2
> +
> +#PIN CONFIGURATION NODES
> +patternProperties:
> + '^.*$':
> + if:
> + type: object
> + $ref: "/schemas/pinctrl/pincfg-node.yaml"
> + then:

I wish people would stop copying this if/then hack...

For new bindings, just name your nodes something sensible you can match
on like '-pins$'.

> + properties:
> + pins:
> + description:
> + List of gpio pins affected by the properties specified in
> + this subnode.
> + items:
> + pattern: "^gpio([0-9]|1[0-5])$"
> + minItems: 1
> + maxItems: 16
> +
> + function:
> + description:
> + Specify the alternative function to be configured for the
> + specified pins.
> +
> + enum: [ gpio, pwm ]
> +
> + bias-disable: true
> + bias-pull-down: true
> + bias-pull-up: true
> + drive-open-drain: true
> + drive-push-pull: true
> + input-enable: true
> + output-high: true
> + output-low: true
> +
> + required:
> + - pins
> + - function
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - reg
> + - gpio-controller
> + - '#gpio-cells'
> + - gpio-ranges
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + i2c_node {
> + gpio-expander@58 {
> + compatible = "awinic,aw9523-pinctrl";
> + reg = <0x58>;
> + interrupt-parent = <&tlmm>;
> + interrupts = <50 IRQ_TYPE_EDGE_FALLING>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&tlmm 0 0 16>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + reset-gpios = <&tlmm 51 GPIO_ACTIVE_HIGH>;
> + };
> + };
> --
> 2.29.2
>

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