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

[Krzysztof Kozlowski <krzk@kernel.org>]

On 13/07/2026 09:09, YC Hsieh wrote:
>>> +
>>> +  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.
> 
> Understood.
> 
> These values are not addressable resources of the BMC node itself;
> rather, they describe how the BMC's LPC engine is exposed on the host
> LPC bus. I am not sure how they should be represented in DT, since
> they do not seem to fit the usual semantics of either "reg" or "interrupts".
> 
> Do you have a preferred way to represent this kind of host-facing LPC
> configuration in the binding?

How this device is expressed somewhere else (on some other system -
"host") feels like outside of this device concern.

Best regards,
Krzysztof