[PATCH v6 2/2] schemas: memory: Add ECC properties

[Peter Robinson]

On Thu, Sep 7, 2023 at 11:57 PM Simon Glass <sjg at chromium.org> wrote:
>
> Some memories provide ECC detection and/or correction. For software which
> wants to check memory, it is helpful to see which regions provide this
> feature.
>
> Add this as a property of the /memory nodes, since it presumably follows
> the hardware-level memory system.

Have these been accepted upstream? A grep of bindings in the upstream
kernel I don't see them.

> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v6:
> - Use a number of bits instead of a string property
> - Fix inidcates typo
>
> Changes in v5:
> - Redo to make this property specific to ECC
> - Provide properties both for detection and correction
>
> Changes in v3:
> - Add new patch to update the /memory nodes
>
>  dtschema/schemas/memory.yaml | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/dtschema/schemas/memory.yaml b/dtschema/schemas/memory.yaml
> index 1d74410..1a48b1c 100644
> --- a/dtschema/schemas/memory.yaml
> +++ b/dtschema/schemas/memory.yaml
> @@ -31,10 +31,21 @@ patternProperties:
>
>        numa-node-id:
>          $ref: types.yaml#/definitions/uint32
> -        description:
> +        description: |
>            For the purpose of identification, each NUMA node is associated with
>            a unique token known as a node id.
> -
> +      ecc-detection-bits:
> +        default: 0
> +        description: |
> +          If present, this indicates the number of bits of memory error which
> +          can be detected and reported by the Error-Correction Code (ECC) memory
> +          subsystem (typically 0, 1 or 2).
> +      ecc-correction-bits:
> +        default: 0
> +        description: |
> +          If present, this indicates the number of bits of memory error which
> +          can be corrected by the Error-Correction Code (ECC) memory subsystem
> +          (typically 0, 1 or 2).
>
>      required:
>        - device_type
> --
> 2.42.0.283.g2d96d420d3-goog
>