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charset="utf-8" The address bus on Agilex5 is limited to 40 bits. When SMMU is enable this will cause address truncation and translation faults. Hence introducing "altr,agilex5-axi-dma" to enable platform specific configuration to configure the dma addressable bit mask. Add a fallback capability for the compatible property to allow driver to probe and initialize with a newly added compatible string without requiring additional entry in the driver. Signed-off-by: Khairul Anuar Romli --- .../devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/= Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml index a393a33c8908..db89ebf2b006 100644 --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml @@ -17,11 +17,15 @@ allOf: =20 properties: compatible: - enum: - - snps,axi-dma-1.01a - - intel,kmb-axi-dma - - starfive,jh7110-axi-dma - - starfive,jh8100-axi-dma + oneOf: + - enum: + - snps,axi-dma-1.01a + - intel,kmb-axi-dma + - starfive,jh7110-axi-dma + - starfive,jh8100-axi-dma + - items: + - const: altr,agilex5-axi-dma + - const: snps,axi-dma-1.01a =20 reg: minItems: 1 --=20 2.43.7 From nobody Tue Dec 2 02:04:59 2025 Received: from CY7PR03CU001.outbound.protection.outlook.com (mail-westcentralusazon11010022.outbound.protection.outlook.com [40.93.198.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A4BB313540; 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charset="utf-8" Update the compatible string for the DMA controller nodes in the Agilex5 device tree from the generic "snps,axi-dma-1.01a" to the platform-specific "altr,agilex5-axi-dma". Add fallback capability to ensure driver is able to initialize properly. This change enables the use of platform-specific features and constraints in the driver, such as setting a 40-bit DMA addressable mask, which is required for Agilex5. It also aligns with the updated device tree bindings and driver support for this compatible string. Signed-off-by: Khairul Anuar Romli --- arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/bo= ot/dts/intel/socfpga_agilex5.dtsi index a5c2025a616e..ef33f27b1a4d 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi @@ -324,7 +324,8 @@ ocram: sram@0 { }; =20 dmac0: dma-controller@10db0000 { - compatible =3D "snps,axi-dma-1.01a"; + compatible =3D "altr,agilex5-axi-dma", + "snps,axi-dma-1.01a"; reg =3D <0x10db0000 0x500>; clocks =3D <&clkmgr AGILEX5_L4_MAIN_CLK>, <&clkmgr AGILEX5_L4_MP_CLK>; @@ -342,7 +343,8 @@ dmac0: dma-controller@10db0000 { }; =20 dmac1: dma-controller@10dc0000 { - compatible =3D "snps,axi-dma-1.01a"; + compatible =3D "altr,agilex5-axi-dma", + "snps,axi-dma-1.01a"; reg =3D <0x10dc0000 0x500>; clocks =3D <&clkmgr AGILEX5_L4_MAIN_CLK>, <&clkmgr AGILEX5_L4_MP_CLK>; --=20 2.43.7