Re: [PATCH 1/2] dt-bindings: arm: add corstone1000 platform

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On 25/03/2022 14:36, Rui Miguel Silva wrote:
> Add bindings to describe the FPGA in a prototyping board
> (MPS3) implementation and the Fixed Virtual Platform
> implementation of the ARM Corstone1000 platform.
> 
> Signed-off-by: Rui Miguel Silva <rui.silva@xxxxxxxxxx>
> ---
>  .../bindings/arm/arm,corstone1000.yaml        | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm,corstone1000.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/arm,corstone1000.yaml b/Documentation/devicetree/bindings/arm/arm,corstone1000.yaml
> new file mode 100644
> index 000000000000..a77f88223801
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm,corstone1000.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/arm,corstone1000.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ARM Corstone1000 Device Tree Bindings
> +
> +maintainers:
> +  - Vishnu Banavath <vishnu.banavath@xxxxxxx>
> +  - Rui Miguel Silva <rui.silva@xxxxxxxxxx>
> +
> +description: |+
> +  ARM's Corstone1000 includes pre-verified Corstone SSE-710 subsystem that
> +  provides a flexible compute architecture that combines Cortex‑A and Cortex‑M
> +  processors.
> +
> +  Support for Cortex‑A32, Cortex‑A35 and Cortex‑A53 processors. Two expansion
> +  systems for M-Class (or other) processors for adding sensors, connectivity,
> +  video, audio and machine learning at the edge System and security IPs to build
> +  a secure SoC for a range of rich IoT applications, for example gateways, smart
> +  cameras and embedded systems.
> +
> +  Integrated Secure Enclave providing hardware Root of Trust and supporting
> +  seamless integration of the optional CryptoCell™-312 cryptographic
> +  accelerator.
> +
> +properties:
> +  $nodename:
> +    const: '/'
> +  compatible:
> +    oneOf:
> +      - description: Corstone1000 MPS3 it has 1 Cortex-A35 CPU core in a FPGA
> +          implementation of the Corstone1000 in the MPS3 prototyping board. See
> +          ARM document DAI0550.
> +        items:
> +          - const: arm,corstone1000-mps3

If I understood correctly your description and DAI0550, the MPS3 board
is a board with Corstone 100, so you miss here compatible for the chip
(e.g. arm,corstone1000).

I guess similar pattern for the FVP, so both should be combined within
an enum (skipping all this description).

Best regards,
Krzysztof



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