linux-kernel - Re: [PATCH 4/4] dt-binding:perf: Add Amlogic DDR PMU

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Date:   Tue, 12 Jul 2022 09:15:32 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jiucheng Xu <jiucheng.xu@...ogic.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Chris Healy <cphealy@...il.com>
Subject: Re: [PATCH 4/4] dt-binding:perf: Add Amlogic DDR PMU

On 12/07/2022 08:36, Jiucheng Xu wrote:
> Add binding documentation for the Amlogic G12 series DDR
> performance monitor unit.

You need to fix subject - use a prefix matching subsystem. Space after
each ':'.

> 
> Signed-off-by: Jiucheng Xu <jiucheng.xu@...ogic.com>
> ---
>  .../devicetree/bindings/perf/aml-ddr-pmu.yaml | 51 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 52 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml
> 
> diff --git a/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml b/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml
> new file mode 100644
> index 000000000000..c586b4ab4009
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml

Filename: aml,g12-ddr-pmu.yaml

> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/perf/aml-ddr-pmu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Amlogic G12 DDR performance monitor
> +
> +maintainers:
> +  - Jiucheng Xu <jiucheng.xu@...ogic.com>
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - enum:
> +          - aml,g12-ddr-pmu
> +      - items:
> +          - enum:
> +              - aml,g12-ddr-pmu
> +          - const: aml,g12-ddr-pmu

This does not make any sense. Why do you use two compatibles
"aml,g12-ddr-pmu", "aml,g12-ddr-pmu" after each other?

> +
> +  reg:
> +    maxItems: 2

You need to describe the items.

> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - model
> +  - dmc_nr
> +  - chann_nr

How these ended up here?
No underscores.

> +  - reg
> +  - interrupts
> +  - interrupt-names

Also something new. No.

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +          ddr_pmu: ddr_pmu {

Wrong indentation. 4 spaces for DTS example.

Generic node name, so "pmu", no underscores in node names.

> +                  compatible = "amlogic,g12-ddr-pmu";
> +                  model = "g12a";
> +                  dmc_nr = <1>;
> +                  chann_nr = <4>;

This does not pass the test. Please do not send untested bindings.


Best regards,
Krzysztof