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charset="utf-8" The Cadence HP NAND Flash Controller on supports DMA transactions through a coherent interconnect. In previous generations SoC (Stratix10 and Agilex) the interconnect was non-coherent, hence there is no need for dma-coherent property to be presence. In Agilex 5, the architecture has changed. It introduced a coherent interconnect that supports cache-coherent DMA. Signed-off-by: Khairul Anuar Romli Acked-by: Miquel Raynal Reviewed-by: Rob Herring (Arm) --- Changes in v2: - Rephrase commit message to describe why the property is needed now and was not needed previously. - Remove redundant statement. --- Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml b/Docum= entation/devicetree/bindings/mtd/cdns,hp-nfc.yaml index 73dc69cee4d8..367257a227b1 100644 --- a/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml +++ b/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml @@ -40,6 +40,8 @@ properties: dmas: maxItems: 1 =20 + dma-coherent: true + iommus: maxItems: 1 =20 --=20 2.43.7 From nobody Sat Feb 7 06:45:40 2026 Received: from CO1PR03CU002.outbound.protection.outlook.com (mail-westus2azon11010020.outbound.protection.outlook.com [52.101.46.20]) (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 AD3D3314B77; 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charset="utf-8" The Synopsys DesignWare AXI DMA Controller on Agilex5, the controller operates on a cache-coherent AXI interface, where DMA transactions are automatically kept coherent with the CPU caches. In previous generations SoC (Stratix10 and Agilex) the interconnect was non-coherent, hence there is no need for dma-coherent property to be presence. In Agilex 5, the architecture has changed. It introduced a coherent interconnect that supports cache-coherent DMA. Signed-off-by: Khairul Anuar Romli Acked-by: Miquel Raynal Reviewed-by: Rob Herring (Arm) --- Changes in v2: - Rephrase commit message to describe why the property is needed now and was not needed previously. - Remove redundant statement. --- Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/= Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml index a393a33c8908..eb67348b4ab1 100644 --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml @@ -64,6 +64,8 @@ properties: =20 dma-noncoherent: true =20 + dma-coherent: true + resets: minItems: 1 maxItems: 2 --=20 2.43.7 From nobody Sat Feb 7 06:45:40 2026 Received: from SA9PR02CU001.outbound.protection.outlook.com (mail-southcentralusazon11013039.outbound.protection.outlook.com [40.93.196.39]) (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 8765631ED7A; 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charset="utf-8" Add the `dma-coherent` property to these device nodes to inform the kernel and DMA subsystem that the devices support hardware-managed cache coherence. Changes: - Add `dma-coherent` to `cdns,hp-nfc` - Add `dma-coherent` to both `snps,axi-dma-1.01a` instances (dmac0, dmac1) This aligns the Agilex5 device tree with the coherent DMA-capable devices accordingly. Signed-off-by: Khairul Anuar Romli Acked-by: Miquel Raynal --- Changes in v2: - No changes --- arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/bo= ot/dts/intel/socfpga_agilex5.dtsi index 1f5d560f97b2..d6a2fe445fa6 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi @@ -324,6 +324,7 @@ nand: nand-controller@10b80000 { clock-names =3D "nf_clk"; cdns,board-delay-ps =3D <4830>; iommus =3D <&smmu 4>; + dma-coherent; status =3D "disabled"; }; =20 @@ -351,6 +352,7 @@ dmac0: dma-controller@10db0000 { snps,priority =3D <0 1 2 3>; snps,axi-max-burst-len =3D <8>; iommus =3D <&smmu 8>; + dma-coherent; }; =20 dmac1: dma-controller@10dc0000 { @@ -369,6 +371,7 @@ dmac1: dma-controller@10dc0000 { snps,priority =3D <0 1 2 3>; snps,axi-max-burst-len =3D <8>; iommus =3D <&smmu 9>; + dma-coherent; }; =20 rst: rstmgr@10d11000 { --=20 2.43.7