[PATCH v3 1/8] dt-bindings: arm: Add Live Firmware Activation

[Sudeep Holla]

On Mon, Jul 06, 2026 at 03:44:41PM +0200, Andre Przywara wrote:
> The Arm Live Firmware Activation spec [1] describes updating firmware
> images during runtime, without requiring a reboot. Update images might
> be deployed out-of-band, for instance via a BMC, in this case the OS
> needs to be notified about the availability of a new image.
> 
> Describe an interrupt that could be triggered by the platform, to notify
> about any changes.
> 
> [1] https://developer.arm.com/documentation/den0147/latest/
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  .../devicetree/bindings/arm/arm,lfa.yaml      | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm,lfa.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/arm,lfa.yaml b/Documentation/devicetree/bindings/arm/arm,lfa.yaml
> new file mode 100644
> index 000000000000..ef8e250f2da7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm,lfa.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/arm,lfa.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Arm Live Firmware Activation (LFA)
> +
> +maintainers:
> +  - Andre Przywara <andre.przywara at arm.com>
> +  - Sudeep Holla <sudeep.holla at arm.com>
> +
> +description:
> +  The Arm Live Firmware Activation (LFA) specification [1] describes a
> +  firmware interface to activate an updated firmware at runtime, without
> +  requiring a reboot. Updates might be supplied out-of-band, for instance
> +  via a BMC, in which case the platform needs to notify an OS about pending
> +  image updates.

What does the below described "interrupts" cover or doesn't cover? Both
in case of in-band and out-of-band. It is not very clear for me.

-- 
Regards,
Sudeep