Re: [PATCH v4 2/4] dt-bindings: cpufreq: apple,soc-cpufreq: Add binding for Apple SoC cpufreq

From: Krzysztof Kozlowski
Date: Mon Nov 28 2022 - 07:57:03 EST


On 28/11/2022 13:42, Hector Martin wrote:
> This binding represents the cpufreq/DVFS hardware present in Apple SoCs.
> The hardware has an independent controller per CPU cluster, and we
> represent them as unique nodes in order to accurately describe the
> hardware. The driver is responsible for binding them as a single cpufreq
> device (in the Linux cpufreq model).
>
> Acked-by: Marc Zyngier <maz@xxxxxxxxxx>
> Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
> ---
> .../cpufreq/apple,cluster-cpufreq.yaml | 117 ++++++++++++++++++
> 1 file changed, 117 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/cpufreq/apple,cluster-cpufreq.yaml
>
> diff --git a/Documentation/devicetree/bindings/cpufreq/apple,cluster-cpufreq.yaml b/Documentation/devicetree/bindings/cpufreq/apple,cluster-cpufreq.yaml
> new file mode 100644
> index 000000000000..a21271f73fc1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/cpufreq/apple,cluster-cpufreq.yaml
> @@ -0,0 +1,117 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/cpufreq/apple,cluster-cpufreq.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Apple SoC cluster cpufreq device
> +
> +maintainers:
> + - Hector Martin <marcan@xxxxxxxxx>
> +
> +description: |
> + Apple SoCs (e.g. M1) have a per-cpu-cluster DVFS controller that is part of
> + the cluster management register block. This binding uses the standard
> + operating-points-v2 table to define the CPU performance states, with the
> + opp-level property specifying the hardware p-state index for that level.
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - oneOf:

This is enum.

Any other changes? Your cover letter say quite unspecific "minor review
feedback"...

Best regards,
Krzysztof