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

[Vinayak Katoch <vinayak.katoch@oss.qualcomm.com>]

Reserve memory region for audio PD dynamic loading and remote heap
requirements. Add the required VMID list for memory ownership
transfers.

Tested-by: Christopher Obbard <chris.obbard@oss.qualcomm.com>
Reviewed-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Vinayak Katoch <vinayak.katoch@oss.qualcomm.com>
---
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@oss.qualcomm.com

Changes in v2:
- Fixed VMID list alignment.
- Link to v1: https://lore.kernel.org/r/20260806-agatti-audio-v1-1-cd6766cc9ccb@oss.qualcomm.com
---
 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@oss.qualcomm.com>