linux-kernel - Re: [Patch v2 2/4] dt-bindings: arm: tegra: Add bindins for nvidia,tegra-ccplex-cluster

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Date:   Wed, 30 Mar 2022 19:53:44 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sumit Gupta <sumitg@...dia.com>
Cc:     rafael@...nel.org, viresh.kumar@...aro.org, krzk+dt@...nel.org,
        treding@...dia.com, jonathanh@...dia.com, linux-pm@...r.kernel.org,
        linux-tegra@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, ksitaraman@...dia.com,
        sanjayc@...dia.com, bbasu@...dia.com
Subject: Re: [Patch v2 2/4] dt-bindings: arm: tegra: Add bindins for
 nvidia,tegra-ccplex-cluster

On Wed, Mar 30, 2022 at 08:08:17PM +0530, Sumit Gupta wrote:
> The Tegra CCPLEX_CLUSTER area contains memory-mapped
> registers that initiate CPU frequency/voltage transitions.
> 
> Signed-off-by: Sumit Gupta <sumitg@...dia.com>
> ---
>  .../tegra/nvidia,tegra-ccplex-cluster.yaml    | 52 +++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
> new file mode 100644
> index 000000000000..74afa06f695e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra-ccplex-cluster.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/arm/tegra/nvidia,tegra-ccplex-cluster.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: NVIDIA Tegra CPU_CLUSTER area device tree bindings
> +
> +maintainers:
> +  - Sumit Gupta <sumitg@...dia.com>
> +  - Mikko Perttunen <mperttunen@...dia.com>
> +  - Jon Hunter <jonathanh@...dia.com>
> +  - Thierry Reding <thierry.reding@...il.com>
> +
> +description: |+
> +  The Tegra CCPLEX_CLUSTER area contains memory-mapped
> +  registers that initiate CPU frequency/voltage transitions.
> +
> +properties:
> +  $nodename:
> +    pattern: "ccplex@([0-9a-f]+)$"
> +
> +  compatible:
> +    enum:
> +      - nvidia,tegra186-ccplex-cluster
> +      - nvidia,tegra234-ccplex-cluster
> +
> +  reg:
> +    maxItems: 1
> +
> +  nvidia,bpmp:
> +    $ref: '/schemas/types.yaml#/definitions/phandle'
> +    description: |
> +      Specifies the bpmp node that needs to be queried to get
> +      operating point data for all CPUs.
> +
> +additionalProperties: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - nvidia,bpmp
> +  - status

status is never required.

> +
> +examples:
> +  - |
> +    ccplex@...0000 {
> +      compatible = "nvidia,tegra234-ccplex-cluster";
> +      reg = <0x0 0x0e000000 0x0 0x5ffff>;
> +      nvidia,bpmp = <&bpmp>;
> +      status = "okay";

Nor should it be in examples.

> +    };
> -- 
> 2.17.1
> 
>