linux-kernel - Re: [PATCH 1/6] arm64: dts: qcom: sm8150: add apps

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Date:   Mon, 25 May 2020 15:07:38 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Jonathan Marek <jonathan@...ek.ca>
Cc:     linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree-owner@...r.kernel.org
Subject: Re: [PATCH 1/6] arm64: dts: qcom: sm8150: add apps_smmu node

Hi Jonathan,

On 2020-05-24 08:08, Jonathan Marek wrote:
> Add the apps_smmu node for sm8150. Note that adding the iommus field 
> for
> UFS is required because initializing the iommu removes the bypass 
> mapping
> that created by the bootloader.
> 
> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
> ---
>  arch/arm64/boot/dts/qcom/sm8150.dtsi | 91 ++++++++++++++++++++++++++++
>  1 file changed, 91 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi
> b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> index a36512d1f6a1..acb839427b12 100644
> --- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> @@ -442,6 +442,8 @@ ufs_mem_hc: ufshc@...4000 {
>  			resets = <&gcc GCC_UFS_PHY_BCR>;
>  			reset-names = "rst";
> 
> +			iommus = <&apps_smmu 0x300 0>;
> +
>  			clock-names =
>  				"core_clk",
>  				"bus_aggr_clk",
> @@ -706,6 +708,7 @@ usb_1_dwc3: dwc3@...0000 {
>  				compatible = "snps,dwc3";
>  				reg = <0 0x0a600000 0 0xcd00>;
>  				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
> +				iommus = <&apps_smmu 0x140 0>;
>  				snps,dis_u2_susphy_quirk;
>  				snps,dis_enblslpm_quirk;
>  				phys = <&usb_1_hsphy>, <&usb_1_ssphy>;
> @@ -742,6 +745,94 @@ spmi_bus: spmi@...0000 {
>  			cell-index = <0>;
>  		};
> 
> +		apps_smmu: iommu@...00000 {
> +			compatible = "qcom,sdm845-smmu-500", "arm,mmu-500";

This should be qcom,sm8150-smmu-500 and also you need to update the 
arm-smmu
binding with this compatible in a separate patch.

-Sai

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