Re: [PATCH 1/1] arm64: dts: qcom: talos: Drop opp-shared from QUP OPP table

[Bjorn Andersson]

On Tue, Nov 11, 2025 at 10:33:50PM +0530, Viken Dadhaniya wrote:
> QUP devices are currently marked with opp-shared in their OPP table,
> causing the kernel to treat them as part of a shared OPP domain. This
> leads to the qcom_geni_serial driver failing to probe with error
> -EBUSY (-16).
> 
> Remove the opp-shared property to ensure the OPP framework treats the
> QUP OPP table as device-specific, allowing the serial driver to probe
> successfully
> 
> Fixes: f6746dc9e379 ("arm64: dts: qcom: qcs615: Add QUPv3 configuration")

This was merged 11 months ago, and Yu Zhang added bluetooth support 3
months ago. What changed to break the QUP users? I think it's reasonable
to use this "Fixes", but we should document - at least on the mailing
list, where the regression happened.

Regards,
Bjorn

> Signed-off-by: Viken Dadhaniya <viken.dadhaniya@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/talos.dtsi | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/talos.dtsi b/arch/arm64/boot/dts/qcom/talos.dtsi
> index eb6f69be4a82..ed89d2d509d5 100644
> --- a/arch/arm64/boot/dts/qcom/talos.dtsi
> +++ b/arch/arm64/boot/dts/qcom/talos.dtsi
> @@ -536,7 +536,6 @@ cdsp_smp2p_in: slave-kernel {
>  
>  	qup_opp_table: opp-table-qup {
>  		compatible = "operating-points-v2";
> -		opp-shared;
>  
>  		opp-75000000 {
>  			opp-hz = /bits/ 64 <75000000>;
> -- 
> 2.34.1
>