linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180: Add iommus property to QUP0 and QUP1

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Message-ID: <CAD=FV=Voec=RNabf7eqMDd68J7KCgVpNwvUxaz6SVwGMnrCppQ@mail.gmail.com>
Date:   Wed, 15 Jan 2020 14:43:55 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Stephen Boyd <swboyd@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: qcom: sc7180: Add iommus property to QUP0 and QUP1

Hi,

On Fri, Jan 10, 2020 at 2:18 AM Sai Prakash Ranjan
<saiprakash.ranjan@...eaurora.org> wrote:
>
> Define iommus property for QUP0 and QUP1 with the proper SID
> and mask. Below SMMU global faults are seen without this during
> boot and when using i2c touchscreen.
>
> QUP0:
> arm-smmu 15000000.iommu: Unexpected global fault, this could be serious
> arm-smmu 15000000.iommu: GFSR 0x00000002, GFSYNR0 0x00000002, GFSYNR1 0x00000043, GFSYNR2 0x00000000
>
> QUP1:
> arm-smmu 15000000.iommu: Unexpected global fault, this could be serious
> arm-smmu 15000000.iommu: GFSR 0x00000002, GFSYNR0 0x00000002, GFSYNR1 0x000004c3, GFSYNR2 0x00000000
>
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 ++
>  1 file changed, 2 insertions(+)

Fixes: ba3fc6496366 ("arm64: dts: sc7180: Add qupv3_0 and qupv3_1")
Reviewed-by: Douglas Anderson <dianders@...omium.org>
Tested-by: Douglas Anderson <dianders@...omium.org>