Re: [PATCH v2 1/6] dt-bindings: net: bluetooth: Document Qualcomm IPQ5018 Bluetooth controller

On 6/30/26 11:15, Krzysztof Kozlowski wrote:
> On Mon, Jun 29, 2026 at 05:01:44PM +0400, George Moussalem wrote:
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
>> +
>> +    bluetooth {
> 
> Don't send new versions while discussion is still going. I need to
> repeat my question - what bus does that sit on?
> 
> Device nodes represent real devices. Real devices sit on a bus, usually.
> Do you have here a bus?

I'm afraid I don't have a definitive answer. Again, my understanding
based on downstream code is that the 'controller' is basically a Cortex
M0 processor running Bluetooth firmware connected to an RF. Data
transport is over a shared memory carveout with APPS signaling the
controller through writes to an IPC mailbox register, while the
controller has an interrupt line back to signal APPS.

> 
>> +      compatible = "qcom,ipq5018-bt";
> 
> Best regards,
> Krzysztof
> 

Best regards,
George