[PATCH v4 1/2] dt-bindings: iio: adc: Add Nuvoton MA35D1 EADC
Jonathan Cameron
jic23 at kernel.org
Sat Nov 7 13:10:21 PST 2026
On Wed, 4 Nov 2026 17:11:35 +0800
Chi-Wen Weng <cwweng.linux at gmail.com> wrote:
> From: Chi-Wen Weng <cwweng at nuvoton.com>
>
> Add a binding for the Enhanced Analog-to-Digital Converter found on
> Nuvoton MA35D1 SoCs.
>
> The controller has eight external analog inputs. They can be used as
> single-ended inputs or as the four fixed differential pairs 0-4, 1-5,
> 2-6 and 3-7.
>
> Use the common ADC channel properties to describe the physical input
> independently of the logical channel index.
>
> Signed-off-by: Chi-Wen Weng <cwweng at nuvoton.com>
A couple of really trivial things inline.
Thanks,
Jonathan
> ---
> .../bindings/iio/adc/nuvoton,ma35d1-eadc.yaml | 163 ++++++++++++++++++
> 1 file changed, 163 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/adc/nuvoton,ma35d1-eadc.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/nuvoton,ma35d1-eadc.yaml b/Documentation/devicetree/bindings/iio/adc/nuvoton,ma35d1-eadc.yaml
> new file mode 100644
> index 000000000000..85b0feac0236
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/nuvoton,ma35d1-eadc.yaml
> @@ -0,0 +1,163 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/nuvoton,ma35d1-eadc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nuvoton MA35D1 Enhanced Analog-to-Digital Converter
> +
> +maintainers:
> + - Chi-Wen Weng <cwweng at nuvoton.com>
> +
> +description: |
Similar to below. I think this is overconstraining the formatting.
> + The Nuvoton MA35D1 Enhanced Analog-to-Digital Converter (EADC) is a
> + 12-bit successive approximation converter with eight external analog
> + inputs and one internally connected VBAT input.
> +
> + The external inputs can be used as eight single-ended channels or as
> + four fixed differential pairs: 0-4, 1-5, 2-6 and 3-7. The internally
> + connected VBAT input is not described by a channel child node.
> +
> + The controller provides four interrupt outputs, ADINT0 through ADINT3.
> +patternProperties:
> + '^channel@[0-7]$':
> + type: object
> + $ref: /schemas/iio/adc/adc.yaml#
> + description: |
IIRC > instead of | is appropriate here. You want to maintain paragraphs but
otherwise allow rewraapping.
> + External EADC channel description. The reg property identifies the
> + logical IIO channel index.
> +
> + A single-ended channel may use single-channel to select an external
> + analog input independently of reg. If single-channel and diff-channels
> + are both absent, the external analog input is selected by reg.
> +
> + A differential channel uses diff-channels to select one of the fixed
> + hardware input pairs: 0-4, 1-5, 2-6 or 3-7. Each single-ended input
> + and each differential input pair may be described at most once.
> +
>
> +...
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