linux-kernel - Re: [PATCH v1 2/3] dt-bindings: edac: npcm-edac.yaml

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Message-ID: <Yhk2kF1G74ndY60b@robh.at.kernel.org>
Date:   Fri, 25 Feb 2022 14:05:36 -0600
From:   Rob Herring <robh@...nel.org>
To:     Medad CChien <medadyoung@...il.com>
Cc:     rric@...nel.org, james.morse@....com, tony.luck@...el.com,
        mchehab@...nel.org, bp@...en8.de, benjaminfair@...gle.com,
        yuenn@...gle.com, venture@...gle.com, KWLIU@...oton.com,
        YSCHU@...oton.com, JJLIU0@...oton.com, KFTING@...oton.com,
        avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, openbmc@...ts.ozlabs.org,
        Medad CChien <ctcchien@...oton.com>
Subject: Re: [PATCH v1 2/3] dt-bindings: edac: npcm-edac.yaml

On Thu, Feb 24, 2022 at 03:47:28PM +0800, Medad CChien wrote:
> Add the device tree bindings for the EDAC driver npcm-edac.
> 
> Signed-off-by: Medad CChien <ctcchien@...oton.com>
> ---
>  .../devicetree/bindings/edac/npcm-edac.yaml   | 64 +++++++++++++++++++
>  1 file changed, 64 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/edac/npcm-edac.yaml
> 
> diff --git a/Documentation/devicetree/bindings/edac/npcm-edac.yaml b/Documentation/devicetree/bindings/edac/npcm-edac.yaml
> new file mode 100644
> index 000000000000..228ace1025dc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/edac/npcm-edac.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/edac/npcm-edac.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nuvoton NPCM Memory Controller EDAC
> +
> +maintainers:
> +  - Medad CChien <ctcchien@...oton.com>
> +
> +description: |
> +  EDAC node is defined to describe on-chip error detection and correction for
> +  Nuvoton NPCM Memory Controller.

The h/w unit is the memory controller. Describe that in your binding. 
EDAC is a Linuxism.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - nuvoton,npcm8xx-edac
> +      - nuvoton,npcm7xx-edac

The h/w manual calls this block 'edac'?

> +
> +  reg:
> +    maxItems: 1
> +

> +  "#address-cells":
> +    const: 2
> +
> +  "#size-cells":
> +    const: 2

You don't need these 2. You don't have a child node with an address.

> +
> +  interrupts:
> +    minItems: 1
> +    items:
> +      - description: uncorrectable error interrupt
> +      - description: correctable error interrupt
> +
> +  interrupt-names:
> +    minItems: 1
> +    items:
> +      - const: ue
> +      - const: ce
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    ahb {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +        mc: memory-controller@...24000 {
> +            #address-cells = <2>;
> +            #size-cells = <2>;
> +            reg = <0x0 0xf0824000 0x0 0x1000>;
> +            interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> +            compatible = "nuvoton,npcm7xx-edac";
> +        };
> +    };
> +
> -- 
> 2.17.1
> 
>