linux-kernel - [PATCH v5 07/10] dt-bindings: net: altr,socfpga-stmmac: allow dma-coherent property

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Message-Id: <20251024-v6-12-topic-socfpga-agilex5-v5-7-4c4a51159eeb@pengutronix.de>
Date: Fri, 24 Oct 2025 13:49:59 +0200
From: Steffen Trumtrar <s.trumtrar@...gutronix.de>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Dinh Nguyen <dinguyen@...nel.org>, 
 Maxime Chevallier <maxime.chevallier@...tlin.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Matthew Gerlach <matthew.gerlach@...era.com>
Cc: kernel@...gutronix.de, netdev@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, 
 Steffen Trumtrar <s.trumtrar@...gutronix.de>
Subject: [PATCH v5 07/10] dt-bindings: net: altr,socfpga-stmmac: allow
 dma-coherent property

The DMA operations on the SoCFPGA stmmac can be dma-coherent. Add as
optional property.

Signed-off-by: Steffen Trumtrar <s.trumtrar@...gutronix.de>
---
 Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
index b53847a2d9536..c34f2ef0cf001 100644
--- a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
+++ b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
@@ -109,6 +109,9 @@ properties:
   txen-skew-ps:
     description: Skew control of TXC pad

+  dma-coherent:
+    description: Present if dma operations are coherent
+
   altr,emac-splitter:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:

-- 
2.51.0