Re: [PATCH v3] arm64: dts: qcom: agatti: Add memory-region for audio PD

[Loic Poulain]

Hi Vinayak,

On Thu, Aug 20, 2026 at 7:52 AM Vinayak Katoch
<vinayak.katoch@xxxxxxxxxxxxxxxx> wrote:
>
> Reserve memory region for audio PD dynamic loading and remote heap
> requirements. Add the required VMID list for memory ownership
> transfers.

My understanding is that this patch fixes an unexpected reboot during
the launch of the audiodp service? If so, should we add a Fixes: tag
to make it eligible for stable?

>
> Tested-by: Christopher Obbard <chris.obbard@xxxxxxxxxxxxxxxx>
> Reviewed-by: Ekansh Gupta <ekansh.gupta@xxxxxxxxxxxxxxxx>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vinayak Katoch <vinayak.katoch@xxxxxxxxxxxxxxxx>
> ---
> Changes in v3:
> - Changed alloc-ranges to <0x0 0x0 0x1 0x0> to cover the full 32-bit address space.
> - Collected Reviewed-by/Tested-by tags.
> - Link to v2: https://lore.kernel.org/r/20260807-agatti-audio-v2-1-3959b1ab8059@xxxxxxxxxxxxxxxx
>
> Changes in v2:
> - Fixed VMID list alignment.
> - Link to v1: https://lore.kernel.org/r/20260806-agatti-audio-v1-1-cd6766cc9ccb@xxxxxxxxxxxxxxxx
> ---
>  arch/arm64/boot/dts/qcom/agatti.dtsi | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/agatti.dtsi b/arch/arm64/boot/dts/qcom/agatti.dtsi
> index 590bd2432d85..d010ef7fdf8c 100644
> --- a/arch/arm64/boot/dts/qcom/agatti.dtsi
> +++ b/arch/arm64/boot/dts/qcom/agatti.dtsi
> @@ -381,6 +381,14 @@ rmtfs_mem: memory@89b01000 {
>                         qcom,client-id = <1>;
>                         qcom,vmid = <QCOM_SCM_VMID_MSS_MSA QCOM_SCM_VMID_NAV>;
>                 };
> +
> +               adsp_rpc_remote_heap_mem: adsp-rpc-remote-heap {
> +                       compatible = "shared-dma-pool";
> +                       alloc-ranges = <0x0 0x0 0x1 0x0>;
> +                       reusable;
> +                       alignment = <0x0 0x400000>;
> +                       size = <0x0 0x800000>;
> +               };
>         };
>
>         smp2p-adsp {
> @@ -2348,6 +2356,9 @@ fastrpc {
>                                         compatible = "qcom,fastrpc";
>                                         qcom,glink-channels = "fastrpcglink-apps-dsp";
>                                         label = "adsp";
> +                                       memory-region = <&adsp_rpc_remote_heap_mem>;
> +                                       qcom,vmids = <QCOM_SCM_VMID_LPASS
> +                                                     QCOM_SCM_VMID_ADSP_HEAP>;
>
>                                         qcom,non-secure-domain;
>
>
> ---
> base-commit: 1701fda2f58e345c050f4309971bdc07cd6146ba
> change-id: 20260806-agatti-audio-357bcd74ae9c
>
> Best regards,
> --
> Vinayak Katoch <vinayak.katoch@xxxxxxxxxxxxxxxx>
>
>