[PATCH v2 2/3] dt-bindings: iio: adc: Add binding documentation for NXP IMX93 ADC

[Rob Herring]

On Wed, Dec 14, 2022 at 09:35:38PM +0800, haibo.chen at nxp.com wrote:
> From: Haibo Chen <haibo.chen at nxp.com>
> 
> The IMX93 SoC has a new ADC IP, so add binding documentation
> for NXP IMX93 ADC.
> 
> Signed-off-by: Haibo Chen <haibo.chen at nxp.com>
> ---
>  .../bindings/iio/adc/nxp,imx93-adc.yaml       | 79 +++++++++++++++++++
>  1 file changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> new file mode 100644
> index 000000000000..229bb79e255c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/nxp,imx93-adc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP iMX93 ADC bindings
> +
> +maintainers:
> +  - Haibo Chen <haibo.chen at nxp.com>
> +
> +description:
> +  The ADC on iMX93 is a 8-channel 12-bit 1MS/s ADC with 4 channels
> +  connected to pins. it support normal and inject mode, include
> +  One-Shot and Scan (continuous) conversions. Programmable DMA
> +  enables for each channel  Also this ADC contain alternate analog
> +  watchdog thresholds, select threshold through input ports. And
> +  also has Self-test logic and Software-initiated calibration.
> +
> +properties:
> +  compatible:
> +    const: nxp,imx93-adc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      line 0 for WDGnL (watchdog threshold) interrupt requests.
> +      line 1 for WDGnH (watchdog threshold) interrupt requests.
> +      line 2 for normal conversion, include EOC (End of Conversion)
> +      interrupt request, ECH (End of Chain) interrupt request,
> +      JEOC (End of Injected Conversion mode) interrupt request
> +      and JECH (End of injected Chain) interrupt request.
> +      line 3 for Self-testing Interrupts.
> +    maxItems: 4

Split the descriptions:

items:
  - description: WDGnL ...
  - description: ...

And then drop maxItems

> +
> +  clocks:
> +    maxItems: 1
> +
> +  vref-supply:
> +    description:
> +      The reference voltage which used to establish channel scaling.
> +
> +  "#io-channel-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +  - vref-supply
> +  - "#io-channel-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/clock/imx93-clock.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    soc {
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        adc at 44530000 {
> +            compatible = "nxp,imx93-adc";
> +            reg = <0x44530000 0x10000>;
> +            interrupts = <GIC_SPI 217 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&clk IMX93_CLK_ADC1_GATE>;
> +            clock-names = "ipg";
> +            vref-supply = <&reg_vref_1v8>;
> +        };
> +    };
> +...
> -- 
> 2.34.1
> 
>