@@ -10,8 +10,8 @@ maintainers:
- Saurabh Sengar <ssengar@linux.microsoft.com>
description:
- VMBus is a software bus that implement the protocols for communication
- between the root or host OS and guest OSs (virtual machines).
+ VMBus is a software bus that implements the protocols for communication
+ between the root or host OS and guest OS'es (virtual machines).
properties:
compatible:
@@ -25,9 +25,17 @@ properties:
'#size-cells':
const: 1
+ dma-coherent: true
+
+ interrupts:
+ maxItems: 1
+ description: |
+ This interrupt is used to report a message from the host.
+
required:
- compatible
- ranges
+ - interrupts
- '#address-cells'
- '#size-cells'
@@ -35,6 +43,8 @@ additionalProperties: false
examples:
- |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
soc {
#address-cells = <2>;
#size-cells = <1>;
@@ -49,6 +59,9 @@ examples:
#address-cells = <2>;
#size-cells = <1>;
ranges = <0x0f 0xf0000000 0x0f 0xf0000000 0x10000000>;
+ dma-coherent;
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_PPI 2 IRQ_TYPE_EDGE_RISING>;
};
};
};
To boot in the VTL mode, VMBus on arm64 needs interrupt description which the binding documentation lacks. The transactions on the bus are DMA coherent which is not mentioned as well. Add the interrupt property and the DMA coherence property to the VMBus binding. Update the example to match that. Fix typos. Signed-off-by: Roman Kisel <romank@linux.microsoft.com> --- .../bindings/bus/microsoft,vmbus.yaml | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-)