[PATCH hyperv-next v8 07/11] dt-bindings: microsoft,vmbus: Add interrupt and DMA coherence properties
From: Roman Kisel <hidden>
Date: 2025-04-14 22:47:18
Also in:
kvmarm, linux-acpi, linux-arch, linux-devicetree, linux-hyperv, linux-pci, lkml
Subsystem:
hyper-v/azure core and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
"K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> Reviewed-by: Krzysztof Kozlowski <redacted> --- .../devicetree/bindings/bus/microsoft,vmbus.yaml | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
index a8d40c766dcd..0bea4f5287ce 100644
--- a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
+++ b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml@@ -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 +25,16 @@ properties: '#size-cells': const: 1 + dma-coherent: true + + interrupts: + maxItems: 1 + description: Interrupt is used to report a message from the host. + required: - compatible - ranges + - interrupts - '#address-cells' - '#size-cells'
@@ -35,6 +42,8 @@ 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 +58,9 @@ 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>; }; }; };
--
2.43.0