From 6ac02df3fff71ddacc71e2ae79b73c16873b41c5 Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@kernel.org>
Date: Wed, 9 Mar 2022 19:35:27 -0600
Subject: [PATCH] dt-bindings: virtio,mmio: Allow setting devices
'dma-coherent'
'virtio,mmio' devices are always coherent within a guest. As Arm DTs
are default non-coherent, the 'dma-coherent' property needs to be set on
the virtio device to mark them as such. This aligns with the QEMU 'virt'
machine DTB.
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220310013528.549030-1-robh@kernel.org
---
Documentation/devicetree/bindings/virtio/mmio.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/virtio/mmio.yaml b/Documentation/devicetree/bindings/virtio/mmio.yaml
index 4b7a0273181c1..10c22b5bd16a3 100644
--- a/Documentation/devicetree/bindings/virtio/mmio.yaml
+++ b/Documentation/devicetree/bindings/virtio/mmio.yaml
@@ -20,6 +20,8 @@ properties:
reg:
maxItems: 1
+ dma-coherent: true
+
interrupts:
maxItems: 1
--
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