linux-kernel - [PATCH 1/3] dt-bindings: mtd: cdns,hp-nfc: Add dma-coherent property

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Message-ID: <af528a83b4749fb3e6062bbc75bcb4fd5a6fec23.1764143105.git.khairul.anuar.romli@altera.com>
Date: Wed, 26 Nov 2025 16:06:22 +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 1/3] dt-bindings: mtd: cdns,hp-nfc: Add dma-coherent property

The Cadence HP NAND Flash Controller on Agilex5 device performs DMA
transactions through a coherent interconnect. dma-coherent property
presents in device tree will allow the kernel’s DMA subsystem
controller’s to performs DMA transaction in dma coherent mode.

Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
---
 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/Documentation/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
 
+  dma-coherent: true
+
   iommus:
     maxItems: 1
 
-- 
2.43.7