Re: [PATCH v6 2/5] dt-bindings: iio: adc: microchip,mcp3564: Add spi-device-addr

[Jonathan Cameron]

On Wed, 15 Jul 2026 13:41:05 +0200
Janani Sunil <janani.sunil@xxxxxxxxxx> wrote:

> Add the generic spi-device-addr property to the binding and deprecate
> the existing vendor specific microchip,hw-device-address property.
> 
> Signed-off-by: Janani Sunil <janani.sunil@xxxxxxxxxx>

Maybe I'm reading the situation wrong but I was expecting to see
driver patches as well. Or is the now deprecated binding element
not actually used?

One other thing below.

Jonathan

> ---
>  Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml
> index 675319276197..02bb198e9fa7 100644
> --- a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml
> @@ -80,6 +80,7 @@ properties:
>      $ref: /schemas/types.yaml#/definitions/uint32
>      minimum: 0
>      maximum: 3
> +    deprecated: true
>      description:
>        The address is set on a per-device basis by fuses in the factory,
>        configured on request. If not requested, the fuses are set for 0x1.
> @@ -91,6 +92,11 @@ properties:
>        clocking of the device address (BITS[7:6] - top two bits of COMMAND BYTE
>        which is first one on the wire).
>  
> +  spi-device-addr:
> +    maxItems: 1
> +    items:
> +      enum: [0, 1, 2, 3]
No default here, yet not required, so how do we know what the value is
if this property isn't there?
> +
>    "#io-channel-cells":
>      const: 1
>  
> @@ -123,7 +129,6 @@ dependencies:
>  required:
>    - compatible
>    - reg
> -  - microchip,hw-device-address
>    - spi-max-frequency
>  
>  allOf:
> @@ -159,7 +164,7 @@ examples:
>              spi-cpha;
>              spi-cpol;
>              spi-max-frequency = <10000000>;
> -            microchip,hw-device-address = <1>;
> +            spi-device-addr = <1>;
>  
>              #address-cells = <1>;
>              #size-cells = <0>;
>