linux-kernel - Re: [PATCH 2/2] arm64: dts: intel: Add Agilex5 SVC node with memory region

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Message-ID: <0d9895d1-9c4a-406f-858f-fcb318b9f04b@kernel.org>
Date: Tue, 28 Oct 2025 10:36:17 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Khairul Anuar Romli <khairul.anuar.romli@...era.com>,
 Dinh Nguyen <dinguyen@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Mahesh Rao <mahesh.rao@...era.com>,
 devicetree@...r.kernel.org, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: intel: Add Agilex5 SVC node with memory
 region

On 28/10/2025 10:29, Khairul Anuar Romli wrote:
> Introduce the Stratix10 SoC service layer (SVC) node for Agilex5 SoCs.
> The node includes the compatible string "intel,agilex5-svc" and references
> a reserved memory region required for communication with the Secure Device
> Manager (SDM).
> 
> Agilex5 introduces a dependency on IOMMU-based translation for reserved
> memory, unlike prior Agilex platforms. This commit introduces the
> structural changes needed to support this feature once the IOMMU driver
> is upstreamed.
> 
> Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
> ---
>  arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
> index a13ccee3c4c3..15284092897e 100644
> --- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
> @@ -841,5 +841,14 @@ queue7 {
>  				};
>  			};
>  		};
> +
> +		firmware {
> +			svc {
> +				compatible = "intel,agilex5-svc";
> +				method = "smc";
> +				memory-region = <&service_reserved>;
> +				iommus = <&smmu 10>;


You did not test your code.

Plus, where is the driver? Please read submitting patches in DT directory.

Best regards,
Krzysztof