[PATCH v2 1/9] dt-bindings: bus: document the RISAB firewall peripheral

Krzysztof Kozlowski krzk at kernel.org
Fri Feb 13 07:07:42 PST 2026


On 12/02/2026 11:10, Gatien Chevallier wrote:
> +
> +  memory-region:
> +    minItems: 1
> +    maxItems: 32
> +    description:
> +      Phandle to nodes describing memory regions to be configured in the RISAB
> +      by the trusted domain of at least a RISAB page size.
> +      These regions cannot overlap. A region must be within st,mem-map range and
> +      can be represented by one or more pages. RISAB has a 4kBytes page
> +      granularity and each page can hold different access rights.
> +
> +  st,mem-map:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: Memory address range covered by the RISAB.
> +    items:
> +      - description: Memory range base address
> +      - description: Memory range size

I did reply at v1 now. This is not a trivial device so should not be rushed.


Best regards,
Krzysztof



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