linux-kernel - Re: [PATCH] arm64: dts: qcom: sm8750: Add adsp fastrpc support

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Message-ID: <bf9291e1-bdad-4b4d-b527-b21963970902@oss.qualcomm.com>
Date: Fri, 2 May 2025 11:51:52 +0100
From: Srinivas Kandagatla <srinivas.kandagatla@....qualcomm.com>
To: Alexey Klimov <alexey.klimov@...aro.org>, 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
Subject: Re: [PATCH] arm64: dts: qcom: sm8750: Add adsp fastrpc support

On 5/2/25 02:15, Alexey Klimov wrote:
> While at this, also add required memory region for 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>
> ---
>  arch/arm64/boot/dts/qcom/sm8750.dtsi | 70 ++++++++++++++++++++++++++++
>  1 file changed, 70 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
> index 149d2ed17641..48ee66125a89 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/interconnect/qcom,icc.h>
>  #include <dt-bindings/interconnect/qcom,sm8750-rpmh.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.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 {
> @@ -2237,6 +2246,67 @@ 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>;
> +					qcom,non-secure-domain;

Any reason why we what to mark adsp as non-secure domain by default?

--srini

> +					#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;
> +					};
> +				};
>  			};
>  		};
>