linux-kernel - Re: [PATCH] arch/arm64/boot/dts/marvell: add optee FW definitions

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Message-ID: <f079ebb0-2161-61bb-818e-840b74ba1821@linaro.org>
Date:   Wed, 9 Nov 2022 15:34:45 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     kostap@...vell.com, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Stefan Chulski <stefanc@...vell.com>,
        Nadav Haklai <nadavh@...vell.com>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH] arch/arm64/boot/dts/marvell: add optee FW definitions

On 09/11/2022 15:30, kostap@...vell.com wrote:
> From: Konstantin Porotchkin <kostap@...vell.com>
> 
> Add reserved memory and ARM firmware definitions for optee
> memory region in Marvell Armada SoCs to avoid protected memory
> access.
> 
> Signed-off-by: Konstantin Porotchkin <kostap@...vell.com>

Use subject prefixes matching the subsystem (git log --oneline -- ...).

> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: Gregory Clement <gregory.clement@...tlin.com>
> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
> ---
>  arch/arm64/boot/dts/marvell/armada-37xx.dtsi  | 11 +++++++++++
>  arch/arm64/boot/dts/marvell/armada-ap80x.dtsi | 13 +++++++++++++
>  2 files changed, 24 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
> index df152c72276b..c7a5a25826ea 100644
> --- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
> @@ -35,6 +35,11 @@ psci-area@...0000 {
>  			reg = <0 0x4000000 0 0x200000>;
>  			no-map;
>  		};
> +
> +		tee@...0000 {
> +			reg = <0 0x4400000 0 0x1000000>;
> +			no-map;
> +		};
>  	};
>  
>  	cpus {
> @@ -531,5 +536,11 @@ armada-3700-rwtm {
>  			mboxes = <&rwtm 0>;
>  			status = "okay";
>  		};
> +
> +		optee {
> +			compatible = "linaro,optee-tz";
> +			method = "smc";
> +			status = "okay";

Why? It's by default.

> +		 };
>  	};
>  };
> diff --git a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> index a06a0a889c43..abf373b39463 100644
> --- a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> @@ -41,6 +41,11 @@ psci-area@...0000 {
>  			reg = <0x0 0x4000000 0x0 0x200000>;
>  			no-map;
>  		};
> +
> +		tee@...0000 {
> +			reg = <0 0x4400000 0 0x1000000>;
> +			no-map;
> +		};
>  	};
>  
>  	AP_NAME {
> @@ -461,4 +466,12 @@ map3_emerg: map3-emerg {
>  			};
>  		};
>  	};
> +
> +	firmware {
> +		optee {
> +			compatible = "linaro,optee-tz";
> +			method = "smc";
> +			status = "okay";

Drop.

> +		 };
> +	};
>  };

Best regards,
Krzysztof