Re: [PATCH 2/2] arm64: dts: qcom: shikra: Add MDSP carveout memory and update APM DAIs memory regions

[Krzysztof Kozlowski]

On Thu, Jun 18, 2026 at 05:05:09PM +0530, Ajay Kumar Nandam wrote:
> Add a dedicated MDSP carveout memory region for audio usecases on
> Shikra and mark both existing audio heap and MDSP carveout regions
> as shared DMA pools.
> 
> Update the Q6 APM DAI node to reference multiple memory regions,
> where index 0 is used for control path buffers and index 1 is used
> for MDSP data path buffers. This separation ensures proper memory
> allocation and access for APM communication between APSS and MDSP.
> 
> Also add shared-dma-pool compatibility to the existing audio heap
> region to align with upstream DMA pool usage.
> 
> Signed-off-by: Ajay Kumar Nandam <ajay.nandam@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/shikra.dtsi | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
> index 88954ee943ef..d744f7e38ca6 100644
> --- a/arch/arm64/boot/dts/qcom/shikra.dtsi
> +++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
> @@ -365,7 +365,14 @@ smem_mem: smem@86000000 {
>  		};
>  
>  		audio_heap_mem: audio-heap@86200000 {
> -			reg = <0x0 0x86200000 0x0 0x100000>;
> +			compatible = "shared-dma-pool";
> +			reg = <0x0 0x86200000 0x0 0x40000>;
> +			no-map;
> +		};
> +
> +		audio_mdsp_carveout_mem: audio-mdsp-carveout@86240000 {
> +			compatible = "shared-dma-pool";
> +			reg = <0x0 0x86240000 0x0 0x100000>;
>  			no-map;
>  		};
>  
> @@ -1935,7 +1942,10 @@ q6apmbedai: bedais {
>  
>  						q6apmdai: dais {
>  							compatible = "qcom,q6apm-dais";
> -							qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;

There is no such line in next-20260619, which means this is some wrong
base.

Best regards,
Krzysztof