linux-kernel - Re: [PATCH V2] arm64: dts: qcom: x1e80100: Add fastrpc nodes

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Message-ID: <2fb391fe-84ab-4c15-9d8f-4119bff0572c@linaro.org>
Date: Tue, 18 Jun 2024 21:15:59 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Sibi Sankar <quic_sibis@...cinc.com>, andersson@...nel.org,
 krzk+dt@...nel.org, robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc: linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, conor+dt@...nel.org,
 dmitry.baryshkov@...aro.org, abel.vesa@...aro.org,
 srinivas.kandagatla@...aro.org
Subject: Re: [PATCH V2] arm64: dts: qcom: x1e80100: Add fastrpc nodes



On 6/18/24 16:56, Sibi Sankar wrote:
> Add fastrpc nodes for ADSP and CDSP on X1E80100 SoC.
> 
> Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
> ---

[...]

> +
> +					compute-cb@1 {
> +						compatible = "qcom,fastrpc-compute-cb";
> +						reg = <1>;
> +						iommus = <&apps_smmu 0x0c01 0x20>,
> +							 <&apps_smmu 0x0c21 0x20>;

(0x0c01 & ~0x20) == (0x0c21 & ~0x20), is this repetition required by
the firmware, or would it work with the latter entry dropped? (and
all others in this cdsp fastrpc list)

Konrad