linux-kernel - [PATCH v2] arm64: dts: qcom: sm8750: Add adsp fastrpc nodes/support

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Message-ID: <20250805162041.47412-1-alexey.klimov@linaro.org>
Date: Tue,  5 Aug 2025 17:20:41 +0100
From: Alexey Klimov <alexey.klimov@...aro.org>
To: andersson@...nel.org,
	konradybcio@...nel.org,
	linux-arm-msm@...r.kernel.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	srini@...nel.org,
	quic_ekangupt@...cinc.com,
	krzysztof.kozlowski@...aro.org,
	dmitry.baryshkov@....qualcomm.com
Subject: [PATCH v2] arm64: dts: qcom: sm8750: Add adsp fastrpc nodes/support

While at this, also add required memory region for adsp fastrpc.

Tested on sm8750-mtp device with adsprpdcd.

Cc: Ekansh Gupta <quic_ekangupt@...cinc.com>
Cc: Srinivas Kandagatla <srini@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---

v2:
- removed qcom,non-secure-domain flag as requested by Srini.

Prev version: https://lore.kernel.org/linux-arm-msm/20250502011539.739937-1-alexey.klimov@linaro.org/

 arch/arm64/boot/dts/qcom/sm8750.dtsi | 69 ++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
index 4643705021c6..cc74fb2e27de 100644
--- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
@@ -7,6 +7,7 @@
 #include <dt-bindings/clock/qcom,sm8750-gcc.h>
 #include <dt-bindings/clock/qcom,sm8750-tcsr.h>
 #include <dt-bindings/dma/qcom-gpi.h>
+#include <dt-bindings/firmware/qcom,scm.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interconnect/qcom,icc.h>
 #include <dt-bindings/interconnect/qcom,sm8750-rpmh.h>
@@ -523,6 +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 {
@@ -2234,6 +2243,66 @@ q6prmcc: clock-controller {
 						};
 					};
 				};
+
+				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>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					compute-cb@3 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <3>;
+						iommus = <&apps_smmu 0x1003 0x80>,
+							 <&apps_smmu 0x1043 0x20>;
+						dma-coherent;
+					};
+
+					compute-cb@4 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <4>;
+						iommus = <&apps_smmu 0x1004 0x80>,
+							 <&apps_smmu 0x1044 0x20>;
+						dma-coherent;
+					};
+
+					compute-cb@5 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <5>;
+						iommus = <&apps_smmu 0x1005 0x80>,
+							 <&apps_smmu 0x1045 0x20>;
+						dma-coherent;
+					};
+
+					compute-cb@6 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <6>;
+						iommus = <&apps_smmu 0x1006 0x80>,
+							 <&apps_smmu 0x1046 0x20>;
+						dma-coherent;
+					};
+
+					compute-cb@7 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <7>;
+						iommus = <&apps_smmu 0x1007 0x40>,
+							 <&apps_smmu 0x1067 0x0>,
+							 <&apps_smmu 0x1087 0x0>;
+						dma-coherent;
+					};
+
+					compute-cb@8 {
+						compatible = "qcom,fastrpc-compute-cb";
+						reg = <8>;
+						iommus = <&apps_smmu 0x1008 0x80>,
+							 <&apps_smmu 0x1048 0x20>;
+						dma-coherent;
+					};
+				};
 			};
 		};
 
-- 
2.47.2