[PATCH RFC 1/2] dt-bindings: arm: Document reboot mode magic

[Rob Herring]

On Mon, Oct 30, 2023 at 02:31:33PM -0700, Elliot Berman wrote:
> Add bindings to describe vendor-specific reboot modes. Values here
> correspond to valid parameters to vendor-specific reset types in PSCI
> SYSTEM_RESET2 call.
> 
> Signed-off-by: Elliot Berman <quic_eberman at quicinc.com>
> ---
>  Documentation/devicetree/bindings/arm/psci.yaml | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml
> index 0c5381e081bd..dc23e901bd0a 100644
> --- a/Documentation/devicetree/bindings/arm/psci.yaml
> +++ b/Documentation/devicetree/bindings/arm/psci.yaml
> @@ -122,6 +122,19 @@ patternProperties:
>        [3] Documentation/devicetree/bindings/power/power-domain.yaml
>        [4] Documentation/devicetree/bindings/power/domain-idle-state.yaml
>  
> +  "^reboot-mode-.*$":
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 1
> +    maxItems: 2
> +    description: |
> +      Describes a vendor-specific reset type. The string after "reboot-mode-"
> +      maps a reboot mode to the parameters in the PSCI SYSTEM_RESET2 call.
> +
> +      Parameters are named reboot-mode-xxx = <type[, cookie]>, where xxx
> +      is the name of the magic reboot mode, type is the lower 31 bits
> +      of the reset_type, and, optionally, the cookie value. If the cookie
> +      is not provided, it is defaulted to zero.

Please use and possibly extend the existing reboot-mode binding.

> +
>  required:
>    - compatible
>    - method
> 
> -- 
> 2.41.0
>