Re: [PATCH v3 1/2] dt-bindings: iio: dac: Add DAC8163

[David Lechner <dlechner@baylibre.com>]

On 8/2/26 11:07 AM, Lukas Metz wrote:
> Add device tree binding for the Texas Instruments DAC8163 family
> including the DAC7562, DAC7563, DAC8162, DAC8163, DAC8562 and DAC8563.
> 
> Signed-off-by: Lukas Metz <lukas.metz@gmx.net>
> ---
>  .../devicetree/bindings/iio/dac/ti,dac8163.yaml    | 87 ++++++++++++++++++++++
>  MAINTAINERS                                        |  6 ++
>  2 files changed, 93 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac8163.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac8163.yaml
> new file mode 100644
> index 000000000000..ba4099c78e06
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac8163.yaml
> @@ -0,0 +1,87 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/dac/ti,dac8163.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments DAC8163 family of DACs
> +
> +description:
> +  The DAC756x, DAC816x, and DAC856x devices are low-power, voltage-output,
> +  dual-channel, 12-, 14-, and 16-bit digital-to-analog converters (DACs),
> +  respectively. These devices include a 2.5-V, 4-ppm/°C internal
> +  reference, giving a full-scale output voltage range of 2.5 V or 5 V.
> +  None of these devices are fallback compatible because they differ in either
> +  resolution or output register values after reset. The sync pin on the device
> +  acts as chip-select pin.
> +
> +maintainers:
> +  - Lukas Metz <lukas.metz@gmx.net>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,dac7562
> +      - ti,dac7563
> +      - ti,dac8162
> +      - ti,dac8163
> +      - ti,dac8562
> +      - ti,dac8563
> +
> +  spi-rx-bus-width:
> +    items:
> +      - const: 0
> +
> +  spi-max-frequency:
> +    maximum: 50000000
> +
> +  spi-cpha: true
> +
> +  reg:
> +    maxItems: 1
> +
> +  avdd-supply: true
> +
> +  clear-gpios:
> +    description:
> +      When asserted, the device output registers are reset to their default
> +      values (zero for dacxxx2 and mid-scale for dacxxx3 devices).
> +    maxItems: 1
> +
> +  ldac-gpios:
> +    description:
> +      Pin needs to be asserted permanently when updating the DAC synchronously.
> +    maxItems: 1
> +
> +  vrefin-supply:
> +    description:
> +      External reference voltage supply for scaling. When no vrefin-supply
> +      is present the internal voltage reference is used.
> +
> +required:
> +  - compatible
> +  - reg
> +  - spi-cpha
> +  - avdd-supply
> +
> +allOf:
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        dac@1 {
> +            compatible = "ti,dac8163";
> +            reg = <0x1>; /* CS1 */

Comment isn't really needed. The bindings already define that this
is the chip select. And I would just use 1 instead of 0x1. This isn't
a memory address.

> +            spi-cpha;

Missing spi-max-frequency and spi-rx-bus-width.

> +            ldac-gpios = <&gpiog 8 GPIO_ACTIVE_LOW>;
> +            avdd-supply = <&avdd_3v3>;
> +        };
> +    };
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d238590a31f2..314f235332f5 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -26394,6 +26394,12 @@ S:	Odd Fixes
>  F:	drivers/clk/ti/
>  F:	include/linux/clk/ti.h
>  
> +TI DAC8163 DAC DRIVER
> +M:	Lukas Metz <lukas.metz@gmx.net>
> +L:	linux-iio@vger.kernel.org
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/iio/dac/ti,dac8163.yaml
> +
>  TI DATA TRANSFORM AND HASHING ENGINE (DTHE) V2 CRYPTO DRIVER
>  M:	T Pratham <t-pratham@ti.com>
>  L:	linux-crypto@vger.kernel.org
>