Re: [PATCH v4 3/6] dt-bindings: power: tegra: Add binding for core power domain

[Rob Herring <robh@xxxxxxxxxx>]

On Sun, Mar 14, 2021 at 07:48:07PM +0300, Dmitry Osipenko wrote:
> All NVIDIA Tegra SoCs have a core power domain where majority of hardware
> blocks reside. Add binding for the core power domain.
> 
> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> ---
>  .../power/nvidia,tegra20-core-domain.yaml     | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/nvidia,tegra20-core-domain.yaml
> 
> diff --git a/Documentation/devicetree/bindings/power/nvidia,tegra20-core-domain.yaml b/Documentation/devicetree/bindings/power/nvidia,tegra20-core-domain.yaml
> new file mode 100644
> index 000000000000..4692489d780a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/nvidia,tegra20-core-domain.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/nvidia,tegra20-core-domain.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVIDIA Tegra Core Power Domain
> +
> +maintainers:
> +  - Dmitry Osipenko <digetx@xxxxxxxxx>
> +  - Jon Hunter <jonathanh@xxxxxxxxxx>
> +  - Thierry Reding <thierry.reding@xxxxxxxxx>
> +
> +allOf:
> +  - $ref: power-domain.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - nvidia,tegra20-core-domain
> +      - nvidia,tegra30-core-domain
> +
> +  operating-points-v2:
> +    description:
> +      Should contain level, voltages and opp-supported-hw property.
> +      The supported-hw is a bitfield indicating SoC speedo or process
> +      ID mask.
> +
> +  "#power-domain-cells":
> +    const: 0
> +
> +  power-supply:
> +    description:
> +      Phandle to voltage regulator connected to the SoC Core power rail.
> +
> +required:
> +  - compatible
> +  - operating-points-v2
> +  - "#power-domain-cells"
> +  - power-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    power-domain {
> +        compatible = "nvidia,tegra20-core-domain";
> +        operating-points-v2 = <&opp_table>;
> +        power-supply = <&regulator>;
> +        #power-domain-cells = <0>;

AFAICT, there's no way to access this 'hardware'?

> +    };
> -- 
> 2.30.2
>