From: Rob Herring <robh@kernel.org>
Date: Thu, 10 Mar 2022 01:35:27 +0000 (-0600)
Subject: dt-bindings: virtio,mmio: Allow setting devices 'dma-coherent'
X-Git-Tag: v5.18-rc1~104^2~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6ac02df3fff71ddacc71e2ae79b73c16873b41c5;p=thirdparty%2Fkernel%2Flinux.git

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
---

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