Re: [RFC 1/7] dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings

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On Wed, Jan 17, 2024 at 11:04:52PM +0530, Sibi Sankar wrote:
> Add devicetree binding for CPUSS Control Processor (CPUCP) mailbox
> controller.
> 
> Signed-off-by: Sibi Sankar <quic_sibis@xxxxxxxxxxx>
> ---
>  .../bindings/mailbox/qcom,cpucp-mbox.yaml     | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
> new file mode 100644
> index 000000000000..2617e5555acb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mailbox/qcom,cpucp-mbox.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. CPUCP Mailbox Controller
> +
> +maintainers:
> +  - Sibi Sankar <quic_sibis@xxxxxxxxxxxxxxxx>
> +
> +description:
> +  The CPUSS Control Processor (CPUCP) mailbox controller enables communication
> +  between AP and CPUCP by acting as a doorbell between them.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,x1e80100-cpucp-mbox
> +      - const: qcom,cpucp-mbox

A generic fallback implies multiple devices use the same unchanged 
block. That seems doubtful given you have not defined any others and 
given Konrad's comments.

Rob




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