[PATCH v2 1/3] dt-bindings: mtd: cdns,hp-nfc: Add dma-coherent property

[Khairul Anuar Romli]

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 <khairul.anuar.romli at altera.com>
---
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/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