linux-kernel - Re: [PATCH v2 1/3] dt-bindings: misc: esm: Add ESM support for TI K3 devices

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Date:   Fri, 21 Apr 2023 09:25:53 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Neha Malcom Francis <n-francis@...com>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     nm@...com, vigneshr@...com, u-kumar1@...com
Subject: Re: [PATCH v2 1/3] dt-bindings: misc: esm: Add ESM support for TI K3
 devices

On 19/04/2023 11:25, Neha Malcom Francis wrote:
> Document the binding for TI K3 ESM (Error Signaling Module) block.
> 
> Signed-off-by: Neha Malcom Francis <n-francis@...com>

Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC.  It might happen, that command when run on an older
kernel, gives you outdated entries.  Therefore please be sure you base
your patches on recent Linux kernel.

> ---
>  .../bindings/hwmon/ti,j721e-esm.yaml          | 55 +++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/ti,j721e-esm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/ti,j721e-esm.yaml b/Documentation/devicetree/bindings/hwmon/ti,j721e-esm.yaml
> new file mode 100644
> index 000000000000..7b23ac7cb3ba
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/ti,j721e-esm.yaml
> @@ -0,0 +1,55 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2022 Texas Instruments Incorporated
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/ti,j721e-esm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments K3 ESM
> +
> +maintainers:
> +  - Neha Malcom Francis <n-francis@...com>
> +
> +description:
> +  The ESM (Error Signaling Module) is an IP block on TI K3 devices
> +  that allows handling of safety events somewhat similar to what interrupt
> +  controller would do. The safety signals have their separate paths within
> +  the SoC, and they are handled by the ESM, which routes them to the proper
> +  destination, which can be system reset, interrupt controller, etc. In the
> +  simplest configuration the signals are just routed to reset the SoC.
> +
> +properties:
> +  compatible:
> +    const: ti,j721e-esm
> +
> +  reg:
> +    items:
> +      - description: the ESM register set
> +
> +  ti,esm-pins:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description:
> +      integer array of ESM interrupt pins to route to external event pin
> +      which can be used to reset the SoC.
> +    minItems: 1
> +    maxItems: 255
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - ti,esm-pins
> +
> +examples:
> +  - |
> +    cbass_main {

No underscores in node names, Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +      #address-cells = <2>;
> +      #size-cells = <2>;

Broken indentation.

> +
> +        esm@...000 {
> +            compatible = "ti,j721e-esm";
> +            reg = <0x0 0x700000 0x0 0x1000>;
> +            ti,esm-pins = <344>, <345>;
> +        };
> +    };

Best regards,
Krzysztof