Re: [PATCH v2 1/2] dt-bindings: edac: Add bindings for Xilinx ZynqMP OCM

[Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>]

On 22/08/2022 14:58, Sai Krishna Potthuri wrote:
> From: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
> 
> Add bindings for Xilinx ZynqMP OCM controller.
> 
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
> Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@xxxxxxx>
> ---
>  .../bindings/edac/xlnx,zynqmp-ocmc.yaml       | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/edac/xlnx,zynqmp-ocmc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/edac/xlnx,zynqmp-ocmc.yaml b/Documentation/devicetree/bindings/edac/xlnx,zynqmp-ocmc.yaml
> new file mode 100644
> index 000000000000..6389fcb7ed69
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/edac/xlnx,zynqmp-ocmc.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/edac/xlnx,zynqmp-ocmc.yaml#

Filename should be based on compatible, so xlnx,zynqmp-ocmc-1.0.yaml

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx Zynqmp OCM(On-Chip Memory) Controller

So this is a memory controller, then please put the bindings in the
memory-controllers directory.

> +
> +maintainers:
> +  - Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxx>
> +  - Sai Krishna Potthuri <sai.krishna.potthuri@xxxxxxx>
> +
> +description: |
> +  The OCM supports 64-bit wide ECC functionality to detect multi-bit errors
> +  and recover from a single-bit memory fault.On a write, if all bytes are
> +  being written, the ECC is generated and written into the ECC RAM along with
> +  the write-data that is written into the data RAM. If one or more bytes are
> +  not written, then the read operation results in an correctable error or
> +  uncorrectable error.
> +
> +properties:
> +  compatible:
> +    const: xlnx,zynqmp-ocmc-1.0
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +unevaluatedProperties: false

Instead this should be:
additionalProperties: false

> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    memory-controller@ff960000 {
> +      compatible = "xlnx,zynqmp-ocmc-1.0";
> +      reg = <0xff960000 0x1000>;
> +      interrupts = <0 10 IRQ_TYPE_LEVEL_HIGH>;

What does 0 stand for? I commented about it already.


> +    };


Best regards,
Krzysztof