Re: [PATCH 2/2] arm64: dts: qcom: monaco-evk: enable UART6 for robot expansion board

[Canfeng Zhuang <canfeng.zhuang@oss.qualcomm.com>]

在 2026/3/29 19:08, Dmitry Baryshkov 写道:
> On Fri, Mar 27, 2026 at 04:31:01PM +0800, Canfeng Zhuang wrote:
>> The monaco-evk mezzanine connector supports a robot expansion board that
>> requires UART6, which is currently disabled. This prevents the expansion
>> board from exchanging data and control commands.
>>
>> Enable UART6 and assign the serial2 alias to provide stable device
>> enumeration for the expansion board.
>>
>> Signed-off-by: Canfeng Zhuang <canfeng.zhuang@oss.qualcomm.com>
>> ---
>>  arch/arm64/boot/dts/qcom/monaco-evk.dts | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
>> index 565418b86b2a..0b26861eac02 100644
>> --- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
>> +++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
>> @@ -21,6 +21,7 @@ aliases {
>>  		ethernet0 = &ethernet0;
>>  		i2c1 = &i2c1;
>>  		serial0 = &uart7;
>> +		serial2 = &uart6;
> 
> What happened to serial1?
> 
>>  	};
>>  
>>  	chosen {
> 

serial1 is used for Bluetooth.

Bluetooth support has not been merged yet because it depends on the ongoing 
M.2 solution. Once the M.2 solution is finalized and merged, the 
Bluetooth-related DTS will be updated accordingly.

The relevant M.2 work is tracked here:
https://lore.kernel.org/all/20260317-pci-m2-e-v6-9-9c898f108d3d@oss.qualcomm.com/

The initial Bluetooth DTS work can be found here:
https://lore.kernel.org/all/20251113130519.2647081-1-wei.deng@oss.qualcomm.com/

Canfeng