Re: [PATCH v2 4/6] arm64: dts: qcom: sdm660: Remove FastRPC compute CB9 entry

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 10/23/26 11:03 AM, Abhinav Parihar wrote:
> Remove the compute-cb@9 nodes from sdm660 device tree to
> prevent clients from selecting a secure context bank for normal FastRPC
> workloads.
> 
> Secure use case support is not currently implemented upstream.
> 
> Fixes: 708ab9d3bc5b ("arm64: dts: qcom: sdm660: set cdsp compute-cbs' regs properly")
> Cc: stable@vger.kernel.org
> Signed-off-by: Abhinav Parihar <abhinav.parihar@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sdm660.dtsi | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm660.dtsi b/arch/arm64/boot/dts/qcom/sdm660.dtsi
> index 0fca9662c64a..723bffc99b67 100644
> --- a/arch/arm64/boot/dts/qcom/sdm660.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm660.dtsi
> @@ -386,12 +386,6 @@ compute-cb@8 {
>  					iommus = <&cdsp_smmu 8>;
>  				};
>  
> -				compute-cb@9 {
> -					compatible = "qcom,fastrpc-compute-cb";
> -					reg = <9>;
> -					iommus = <&cdsp_smmu 9>;
> -				};

On this platform, it seems like the secure ones are SID 1/2

Konrad