linux-kernel - Re: [PATCH 16/21] arm64: dts: ls1046a: add smmu node

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Date:   Wed, 19 Sep 2018 14:30:59 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     laurentiu.tudor@....com, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     madalin.bucur@....com, roy.pledge@....com, leoyang.li@....com,
        shawnguo@...nel.org, davem@...emloft.net
Subject: Re: [PATCH 16/21] arm64: dts: ls1046a: add smmu node

On 19/09/18 13:36, laurentiu.tudor@....com wrote:
> From: Laurentiu Tudor <laurentiu.tudor@....com>
> 
> This allows for the SMMU device to be probed by the SMMU kernel driver.
> 
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>
> ---
>   .../arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 42 +++++++++++++++++++
>   1 file changed, 42 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> index ef83786b8b90..06863d3e4a7d 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> @@ -228,6 +228,48 @@
>   			bus-width = <4>;
>   		};
>   
> +		mmu: iommu@...0000 {
> +			compatible = "arm,mmu-500";
> +			reg = <0 0x9000000 0 0x400000>;
> +			dma-coherent;
> +			#global-interrupts = <2>;
> +			#iommu-cells = <1>;
> +			interrupts = <0 142 4>, /* global secure fault */

Either that's not really the secure global interrupt, or those context 
interrupts are wrong.

Robin.

> +				     <0 143 4>, /* combined secure interrupt */
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>,
> +				     <0 142 4>;
> +		};
> +
>   		scfg: scfg@...0000 {
>   			compatible = "fsl,ls1046a-scfg", "syscon";
>   			reg = <0x0 0x1570000 0x0 0x10000>;
>