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Date:   Sun, 18 Dec 2022 12:10:37 +0100
From:   Martin Botka <martin.botka@somainline.org>
Subject: Re: [PATCH v4 3/4] arm64: dts: qcom: sm6125: Add apps_smmu with
 streamID to SDHCI 1/2 nodes
To:     Marijn Suijten <marijn.suijten@somainline.org>
Cc:     phone-devel@vger.kernel.org, Will Deacon <will@kernel.org>,
        Joerg Roedel <joro@8bytes.org>,
        Bjorn Andersson <andersson@kernel.org>,
        ~postmarketos/upstreaming@lists.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@somainline.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Jami Kettunen <jami.kettunen@somainline.org>,
        Lux Aliaga <they@mint.lgbt>,
        Robin Murphy <robin.murphy@arm.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Thierry Reding <treding@nvidia.com>,
        Melody Olvera <quic_molvera@quicinc.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Bhupesh Sharma <bhupesh.sharma@linaro.org>,
        Douglas Anderson <dianders@chromium.org>,
        linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org
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        <20221216215819.1164973-4-marijn.suijten@somainline.org>
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On Fri, Dec 16 2022 at 10:58:18 PM +01:00:00, Marijn Suijten 
<marijn.suijten@somainline.org> wrote:
> When enabling the APPS SMMU the mainline driver reconfigures the SMMU
> from its bootloader configuration, loosing the stream mapping for 
> (among
> which) the SDHCI hardware and breaking its ADMA feature.  This feature
> can be disabled with:
> 
>     sdhci.debug_quirks=0x40
> 
> But it is of course desired to have this feature enabled and working
> through the SMMU.
> 
> Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
> ---
>  arch/arm64/boot/dts/qcom/sm6125.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi 
> b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> index 347665c2067c..f560499cc0ca 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
> @@ -468,6 +468,7 @@ sdhc_1: mmc@4744000 {
>  				 <&gcc GCC_SDCC1_APPS_CLK>,
>  				 <&xo_board>;
>  			clock-names = "iface", "core", "xo";
> +			iommus = <&apps_smmu 0x160 0>;
> 
>  			power-domains = <&rpmpd SM6125_VDDCX>;
> 
> @@ -494,6 +495,7 @@ sdhc_2: mmc@4784000 {
>  				 <&gcc GCC_SDCC2_APPS_CLK>,
>  				 <&xo_board>;
>  			clock-names = "iface", "core", "xo";
> +			iommus = <&apps_smmu 0x180 0>;
> 
>  			pinctrl-0 = <&sdc2_on_state>;
>  			pinctrl-1 = <&sdc2_off_state>;
> --
> 2.39.0
> 
With 0x0 as mask

Reviewed-by: Martin Botka <martin.botka@somainline.org>

-Martin