Re: [PATCH] arm64: dts: qcom: eliza: Add FastRPC support

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

On 7/21/26 11:30 AM, Abel Vesa wrote:
> Describe the glink-edge for CDSP and the FastRPC subnodes for both ADSP
> and CDSP.
> 
> Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
> ---
> FastRPC nodes were not part of the remoteprocs patchsets because they
> weren't tested in time in order to be sent along.
> ---

[...]

> +				fastrpc {
> +					compatible = "qcom,fastrpc";
> +
> +					qcom,glink-channels = "fastrpcglink-apps-dsp";
> +
> +					label = "adsp";
> +
> +					qcom,non-secure-domain;
> +
> +					#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>;

nit: the doc specifies '0x1063 0x20' etc. for the secondary
streams. They are of course equivalent with the mask

[...]

> +					compute-cb@7 {
> +						compatible = "qcom,fastrpc-compute-cb";
> +						reg = <7>;
> +
> +						iommus = <&apps_smmu 0x1007 0x40>,
> +							 <&apps_smmu 0x1067 0x0>,
> +							 <&apps_smmu 0x1087 0x0>;

Why does only this one get the tertiary stream?

[...]

> +				fastrpc {
> +					compatible = "qcom,fastrpc";
> +					qcom,glink-channels = "fastrpcglink-apps-dsp";
> +					label = "cdsp";
> +					qcom,non-secure-domain;
> +					#address-cells = <1>;
> +					#size-cells = <0>;

also 0x0c00 @0 I believe?

Konrad