Re: [PATCH v2 01/13] dt-bindings: i3c: Add mipi-i3c-static-method to support SETAASA

[Frank Li <Frank.li@nxp.com>]

On Thu, Apr 09, 2026 at 04:27:31PM +0530, Akhil R wrote:
> Add the 'mipi-i3c-static-method' property mentioned in the MIPI I3C
> Discovery and Configuration Specification [1] to specify which discovery
> method an I3C device supports during bus initialization. The property is
> a bitmap, where a bit value of 1 indicates support for that method, and 0
> indicates lack of support.
> Bit 0: SETDASA CCC (Direct)
> Bit 1: SETAASA CCC (Broadcast)
> Bit 2: Other CCC (vendor / standards extension)
> All other bits are reserved.
>
> It is specifically needed when an I3C device requires SETAASA for the
> address assignment. SETDASA will be supported by default if this property
> is absent, which means for now the property just serves as a flag to
> enable SETAASA, but keep the property as a bitmap to align with the
> specifications.
>
> [1] https://www.mipi.org/mipi-disco-for-i3c-download
>
> Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
> ---
>  .../devicetree/bindings/i3c/i3c.yaml          | 30 ++++++++++++++++---
>  1 file changed, 26 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/i3c/i3c.yaml b/Documentation/devicetree/bindings/i3c/i3c.yaml
> index e25fa72fd785..1705d90d4d79 100644
> --- a/Documentation/devicetree/bindings/i3c/i3c.yaml
> +++ b/Documentation/devicetree/bindings/i3c/i3c.yaml
> @@ -31,10 +31,12 @@ properties:
>        described in the device tree, which in turn means we have to describe
>        I3C devices.
>
> -      Another use case for describing an I3C device in the device tree is when
> -      this I3C device has a static I2C address and we want to assign it a
> -      specific I3C dynamic address before the DAA takes place (so that other
> -      devices on the bus can't take this dynamic address).
> +      Other use-cases for describing an I3C device in the device tree are:
> +      - When the I3C device has a static I2C address and we want to assign
> +        it a specific I3C dynamic address before the DAA takes place (so
> +        that other devices on the bus can't take this dynamic address).
> +      - When the I3C device requires SETAASA for its discovery and uses a
> +        pre-defined static address.
>
>    "#size-cells":
>      const: 0
> @@ -147,6 +149,26 @@ patternProperties:
>            through SETDASA. If static address is not present, this address is assigned
>            through SETNEWDA after assigning a temporary address via ENTDAA.
>
> +      mipi-i3c-static-method:
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        minimum: 0x1
> +        maximum: 0xff
> +        default: 1
> +        description: |
> +          Bitmap describing which methods of Dynamic Address Assignment from a
> +          static address are supported by this I3C Target. A bit value of 1
> +          indicates support for that method, and 0 indicates lack of support.
> +          Bit 0: SETDASA CCC (Direct)
> +          Bit 1: SETAASA CCC (Broadcast)
> +          Bit 2: Other CCC (vendor / standards extension)

You need define at include/dt-bindings/i3c/i3c.h

Or direct use string arrray
anyOf
  - setdasa
  - setaasa
  - vendor


Frank