Re: [PATCH] arm64: dts: qcom: qcs6490-rb3gen2: add rmtfs node

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

On 5/20/26 11:54 AM, Dmitry Baryshkov wrote:
> Downstream kernels for RB3 Gen2 don't specify the RMTFS address, instead
> the kernel is supposed to allocate rmtfs buffers dynamically. The
> upstream kernel doesn't support dynamic allocation of RMTFS buffers, so
> use the fixed allocation. The RMTFS node (and corresponding interface)
> is required for the modem DSP to work (which otherwise would crash).
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index ceb68a890bf4..37a3b51323ce 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -165,6 +165,15 @@ debug_vm_mem: debug-vm@d0600000 {
>  			reg = <0x0 0xd0600000 0x0 0x100000>;
>  			no-map;
>  		};
> +
> +		rmtfs_mem: memory@f8500000 {
> +			compatible = "qcom,rmtfs-mem";
> +			reg = <0x0 0xf8500000 0x0 0x600000>;
> +			no-map;
> +
> +			qcom,client-id = <1>;
> +			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>, <QCOM_SCM_VMID_NAV>;


Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad