linux-kernel - Re: [PATCH v3 1/2] arm64: tegra: add ACONNECT, ADMA and AGIC nodes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <8a71e670-7943-6bce-ba61-3f020fd9450d@nvidia.com>
Date:   Thu, 13 Jun 2019 10:42:50 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Sameer Pujar <spujar@...dia.com>, <thierry.reding@...il.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>
CC:     <mkumard@...dia.com>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] arm64: tegra: add ACONNECT, ADMA and AGIC nodes


On 13/06/2019 10:10, Sameer Pujar wrote:
> Add DT nodes for following devices on Tegra186 and Tegra194
>  * ACONNECT
>  * ADMA
>  * AGIC
> 
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> ---
>  changes in current revision
>   * use single address range for all APE modules
>   * fix address range for agic
> 
>  arch/arm64/boot/dts/nvidia/tegra186.dtsi | 67 ++++++++++++++++++++++++++++++++
>  arch/arm64/boot/dts/nvidia/tegra194.dtsi | 67 ++++++++++++++++++++++++++++++++
>  2 files changed, 134 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> index 426ac0b..b4d735e 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
> @@ -1295,4 +1295,71 @@
>  				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
>  		interrupt-parent = <&gic>;
>  	};
> +
> +	aconnect@...1000 {

This address does not look correct. This appears to be the address of
the AGIC. I think it should be 2900000, however, I also wonder if we
should even bother with an address for the aconnect as this is just a
bus and we don't specific a 'reg' property.

> +		compatible = "nvidia,tegra210-aconnect";
> +		clocks = <&bpmp TEGRA186_CLK_APE>,
> +			 <&bpmp TEGRA186_CLK_APB2APE>;
> +		clock-names = "ape", "apb2ape";
> +		power-domains = <&bpmp TEGRA186_POWER_DOMAIN_AUD>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x02900000 0x0 0x02900000 0x1FFFFF>;

This should be 0x1fffff.

> +		status = "disabled";
> +
> +		dma-controller@...0000 {
> +			compatible = "nvidia,tegra186-adma";
> +			reg = <0x02930000 0x50000>;
> +			interrupt-parent = <&agic>;
> +			interrupts =  <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
> +				      <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			clocks = <&bpmp TEGRA186_CLK_AHUB>;
> +			clock-names = "d_audio";
> +			status = "disabled";
> +		};
> +
> +		agic: agic@...1000 {

I think that this should also be "agic: interrupt-controller@...x" to
conform with standard names. Sorry the Tegra210 version is not the best
reference!

Cheers
Jon

-- 
nvpublic