linux-kernel - [PATCH 2/3] dt-bindings: dma: snps,dw-axi-dmac: add dma-coherent property

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Message-ID: <53893e7091f2f7b65841ce91c080eaad66723e6d.1764143105.git.khairul.anuar.romli@altera.com>
Date: Wed, 26 Nov 2025 16:06:23 +0800
From: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
To: Dinh Nguyen <dinguyen@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Vinod Koul <vkoul@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Niravkumar L Rabara <niravkumar.l.rabara@...el.com>,
	dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mtd@...ts.infradead.org,
	Khairul Anuar Romli <khairul.anuar.romli@...era.com>
Subject: [PATCH 2/3] dt-bindings: dma: snps,dw-axi-dmac: add dma-coherent property

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.

dma-coherent property will enable operating system to performs DMA
transactions in dma coherent mode.

Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
---
 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:
 
   dma-noncoherent: true
 
+  dma-coherent: true
+
   resets:
     minItems: 1
     maxItems: 2
-- 
2.43.7