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

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Message-ID: <b955dcbb-48b6-f236-ccbd-bc7d0de1df60@codeaurora.org>
Date:   Sat, 10 Apr 2021 10:47:07 +0530
From:   Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
To:     Stephen Boyd <swboyd@...omium.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>
Subject: Re: [PATCH v2] arm64: dts: qcom: Update iommu property for
 simultaneous playback

Hi Stephen.

Thanks for your time!!!


On 4/9/2021 10:31 PM, Stephen Boyd wrote:
> 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?
That is ID is for HDMI Stream, so as part of DP patches that will be added.
>
>>   
>>                          power-domains = <&lpass_hm LPASS_CORE_HM_GDSCR>;
>>
-- 
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