linux-kernel - Re: [PATCH v2] arm64: dts: qcom: Update iommu property for simultaneous playback

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Date:   Fri, 09 Apr 2021 10:01:04 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        agross@...nel.org, bjorn.andersson@...aro.org,
        devicetree@...r.kernel.org, dianders@...omium.org,
        judyhsiao@...omium.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        rohitkr@...eaurora.org, srinivas.kandagatla@...aro.org
Cc:     V Sujith Kumar Reddy <vsujithk@...eaurora.org>,
        Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
Subject: Re: [PATCH v2] arm64: dts: qcom: Update iommu property for simultaneous playback

Quoting Srinivasa Rao Mandadapu (2021-04-06 09:33:30)
> From: V Sujith Kumar Reddy <vsujithk@...eaurora.org>
> 
> Update iommu property in lpass cpu node for supporting
> simultaneous playback on headset and speaker.
> 
> Signed-off-by: V Sujith Kumar Reddy <vsujithk@...eaurora.org>
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
> ---
> Changes since v1:
>    -- Commit messge header change
> 
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index a6da78d31fdd..6228ba2d8513 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -3566,7 +3566,8 @@ lpass_cpu: lpass@...00000 {
>                         reg = <0 0x62f00000 0 0x29000>;
>                         reg-names = "lpass-lpaif";
>  
> -                       iommus = <&apps_smmu 0x1020 0>;
> +                       iommus = <&apps_smmu 0x1020 0>,
> +                               <&apps_smmu 0x1021 0>;

The stream ID 0x1032 was also dropped in this version but there's no
mention of that in the changelog. Why?

>  
>                         power-domains = <&lpass_hm LPASS_CORE_HM_GDSCR>;
>