linux-kernel - [PATCH RFT v3 1/2] arm64: dts: qcom: sm8750: add memory node for adsp fastrpc

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Message-Id: <20251209-sm8750-fastrpc-adsp-v3-1-ccfff49a8af9@linaro.org>
Date: Tue, 09 Dec 2025 07:37:59 +0000
From: Alexey Klimov <alexey.klimov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Srinivas Kandagatla <srini@...nel.org>, 
 Ekansh Gupta <quic_ekangupt@...cinc.com>, 
 Alexey Klimov <alexey.klimov@...aro.org>
Subject: [PATCH RFT v3 1/2] arm64: dts: qcom: sm8750: add memory node for
 adsp fastrpc

Add optional memory heap node that can be used for ADSP fastrpc.

Cc: Ekansh Gupta <quic_ekangupt@...cinc.com>
Cc: Srinivas Kandagatla <srini@...nel.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8750.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
index 3f0b57f428bbb388521c27d9ae96bbef3d62b2e2..be89c65163bf0480100c09c883b68d03455c1870 100644
--- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
@@ -524,6 +524,14 @@ llcc_lpi_mem: llcc-lpi@...00000 {
 			reg = <0x0 0xff800000 0x0 0x800000>;
 			no-map;
 		};
+
+		adsp_rpc_remote_heap_mem: adsp-rpc-remote-heap {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;
+			alignment = <0x0 0x400000>;
+			size = <0x0 0xc00000>;
+			reusable;
+		};
 	};
 
 	smp2p-adsp {

-- 
2.47.3