[PATCH 3/4] dt-bindings: ipmi: Add optional LPC properties to ASPEED BT devices

[Krzysztof Kozlowski]

On 29/06/2026 08:49, Yu-Che Hsieh via B4 Relay wrote:
> From: Yu-Che Hsieh <yc_hsieh at aspeedtech.com>
> 
> Allocating IO and IRQ resources to LPC devices is in-theory an operation
> 
> for the host, however ASPEED systems describe these resources through
> 
> BMC-internal configuration, as already supported by the ASPEED KCS BMC

What

is

with

this

line breaks?


> 
> binding.
> 
> Add aspeed,lpc-io-reg and aspeed,lpc-interrupts to the ASPEED BT BMC
> 
> binding so firmware can describe the host LPC IO address and SerIRQ
> 
> configuration using the same properties as KCS devices.
> 
> Signed-off-by: Yu-Che Hsieh <yc_hsieh at aspeedtech.com>
> ---
>  .../bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml       | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml
> index c4f7cdbbe16b..1803c6bbae93 100644
> --- a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml
> +++ b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml
> @@ -25,6 +25,24 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> +  aspeed,lpc-io-reg:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    maxItems: 1
> +    description: |
> +      The host CPU LPC IO address for the BT device.

No, you do not get second reg property.

> +
> +  aspeed,lpc-interrupts:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 2
> +    maxItems: 2
> +    description: |
> +      A 2-cell property expressing the LPC SerIRQ number and the interrupt
> +      level/sense encoding (specified in the standard fashion).
> +
> +      Note that the generated interrupt is issued from the BMC to the host, and
> +      thus the target interrupt controller is not captured by the BMC's
> +      devicetree.

No, you do not get second interrupts property.

> 


Best regards,
Krzysztof