Re: [PATCH v3 08/10] dt-bindings: arm: Add HPE GXP CPU Init

Krzysztof Kozlowski
2022-03-11T10:22:36Z

On 10/03/2022 20:52, nick.hawkins@hpe.com wrote:
> From: Nick Hawkins <nick.hawkins@hpe.com>
>
> This adds support for the hpe,gxp-cpu-init binding.
> With the HPE GXP initialization it is necessary to have access to this
> register for it to boot.
>
> Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
> ---
> .../cpu-enable-method/hpe,gxp-cpu-init.yaml | 31 +++++++++++++++++++
> 1 file changed, 31 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/cpu-enable-method/hpe,gxp-cpu-init.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/cpu-enable-method/hpe,gxp-cpu-init.yaml b/Documentation/devicetree/bindings/arm/cpu-enable-method/hpe,gxp-cpu-init.yaml
> new file mode 100644
> index 000000000000..a17c3fcc5421
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/cpu-enable-method/hpe,gxp-cpu-init.yaml
> @@ -0,0 +1,31 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/cpu-enable-method/hpe,gxp-cpu-init.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Initialize GXP CPU

Please explain what's this. The bindings describe the hardware and I
cannot get what is this here about. Is it a CPU enable method (like in
cpus.yaml)? Is it some power management block?

Best regards,
Krzysztof