Re: [PATCH v2 6/6] arm64: dts: qcom: rb3gen2: add Industrial BT UART overlay

[Konrad Dybcio]

On 7/31/26 8:53 AM, Rahul Samana wrote:
> 
> 
> On 29-07-2026 18:01, Konrad Dybcio wrote:
>> On 7/27/26 5:45 PM, Rahul Samana wrote:
>>> The reworked RB3 Gen 2 Industrial mezzanine keeps the common Industrial
>>> mezzanine hardware description but routes QCC2072 Bluetooth over UART4
>>> instead of the default Bluetooth-over-USB path.
>>>
>>> Build this variant by applying the common Industrial mezzanine overlay
>>> first, followed by the BT UART overlay. The overlay models the M.2 E-key
>>> connector graph endpoints for PCIe and UART, and disables the on-board
>>> WCN6750 PMU and UART7 path so the M.2 QCC2072 Bluetooth controller can be
>>> used instead.
>>
>> So is the onboard module disabled? Can we not just use two in parallel?
>>
> 
> The Industrial mezzanine variants do not support the on-board WCN6750
> wireless path. The common Industrial mezzanine overlay already disables
> the on-board Wi-Fi node.

What does 'do not support' it mean here? They are physically present
as part of the SoM, so unless the lanes are somehow diverted away,
why is it not?

Konrad