Rob Herring
2022-Mar-10 01:35 UTC
[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 at 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 4b7a0273181c..10c22b5bd16a 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
--
2.32.0
Rob Herring
2022-Mar-20 19:08 UTC
[PATCH] dt-bindings: virtio,mmio: Allow setting devices 'dma-coherent'
On Wed, 09 Mar 2022 19:35:27 -0600, Rob Herring wrote:> '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 at kernel.org> > --- > Documentation/devicetree/bindings/virtio/mmio.yaml | 2 ++ > 1 file changed, 2 insertions(+) >Applied, thanks!