Re: [PATCH v2 1/3] dt-bindings: power: limits: Describe Qualcomm SPEL hardware

[Krzysztof Kozlowski <krzk@kernel.org>]

On Sat, Jun 20, 2026 at 02:09:08AM +0530, Manaf Meethalavalappu Pallikunhi wrote:
> The Qualcomm SoC Power and Electrical Limits (SPEL) provides hardware
> based power monitoring and limiting capabilities for various domains.
> 
> Add a DeviceTree binding to describe the SPEL block on Qualcomm's SoC.
> 
> Signed-off-by: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>
> ---
>  .../bindings/power/limits/qcom,spel.yaml           | 47 ++++++++++++++++++++++
>  MAINTAINERS                                        |  6 +++
>  2 files changed, 53 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/power/limits/qcom,spel.yaml b/Documentation/devicetree/bindings/power/limits/qcom,spel.yaml

What is "limits" directory for? What sort of class of devices fit there?

> new file mode 100644
> index 000000000000..4c6e6cbfbfe4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/limits/qcom,spel.yaml

Filename should match the compatible, so qcom,glymur-spel.yaml

> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/limits/qcom,spel.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SoC Power and Electrical Limits (SPEL)
> +
> +maintainers:
> +  - Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>
> +
> +description:
> +  The Qualcomm SPEL (SoC Power and Electrical Limits) provides hardware-based
> +  power monitoring and limiting capabilities for various power domains in
> +  Qualcomm SoCs.

Please describe here more what is this limiting capabilities.

> +
> +properties:
> +  compatible:
> +    const: qcom,glymur-spel
> +
> +  reg:
> +    maxItems: 3
> +
> +  reg-names:
> +    items:
> +      - const: config
> +      - const: constraints
> +      - const: nodes

Best regards,
Krzysztof