linux-kernel - [PATCH] dt-bindings: mmc: arasan,sdhci: Allow "dma-coherent" property

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Message-ID: <20251215212751.3321878-1-robh@kernel.org>
Date: Mon, 15 Dec 2025 15:27:50 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>
Cc: linux-mmc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: mmc: arasan,sdhci: Allow "dma-coherent" property

The Arasan SDHCI controller is DMA coherent on the APM merlin SoC, so allow
the dma-coherent property. No reason implementations can't also be coherent
and there's not an SoC specific compatible, so allow it on any platform.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml b/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml
index 8e79de97b242..d6b6fa6dcffb 100644
--- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml
@@ -121,6 +121,8 @@ properties:
       - const: clk_ahb
       - const: gate
 
+  dma-coherent: true
+
   interrupts:
     minItems: 1
     maxItems: 2
-- 
2.51.0