linux-kernel - Re: [PATCH] arm64: tegra: Add SMMU node for Tegra186

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Message-ID: <16a3d9cb-eb74-7e1c-82e2-487d0ed9db8f@kapsi.fi>
Date:   Wed, 20 Sep 2017 15:46:14 +0300
From:   Mikko Perttunen <cyndis@...si.fi>
To:     Krishna Reddy <vdumpa@...dia.com>, robh+dt@...nel.org,
        mark.rutland@....com, catalin.marinas@....com, will.deacon@....com,
        thierry.reding@...il.com, jonathanh@...dia.com, josephl@...dia.com,
        acourbot@...dia.com, mperttunen@...dia.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: tegra: Add SMMU node for Tegra186

Reviewed-by: Mikko Perttunen <mperttunen@...dia.com>
Tested-by: Mikko Perttunen <mperttunen@...dia.com>

Tested to work with Host1x :)

I noticed a slight difference with downstream where downstream has 
global interrupts 170 and 171 - but looks like the latter is for secure 
faults which we should never get so this way seems more correct.

Thanks,
Mikko

On 14.09.2017 02:01, Krishna Reddy wrote:
> Add the DT node for ARM SMMU on Tegra186.
>
> Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
> ---
>  arch/arm64/boot/dts/nvidia/tegra186.dtsi | 73 ++++++++++++++++++++++++++++++++
>  1 file changed, 73 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> index 0b0552c9f7dd..e2c3ad203c93 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> @@ -355,6 +355,79 @@
>  		nvidia,bpmp = <&bpmp>;
>  	};
>
> +	smmu: iommu@...00000 {
> +		compatible = "arm,mmu-500";
> +		reg = <0 0x12000000 0 0x800000>;
> +		#global-interrupts = <1>;
> +		interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
> +		#iommu-cells = <1>;
> +		stream-match-mask = <0x7F80>;
> +	};
> +
>  	gpu@...00000 {
>  		compatible = "nvidia,gp10b";
>  		reg = <0x0 0x17000000 0x0 0x1000000>,
>