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

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 5/2/25 3:15 AM, 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@quicinc.com>
> Cc: Srinivas Kandagatla <srini@kernel.org>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Signed-off-by: Alexey Klimov <alexey.klimov@linaro.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@ff800000 {
>  			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>;

IIUC the driver only considers this on the sensor DSP

Konrad