Commit 23aa0c35 authored by Roman Kisel's avatar Roman Kisel Committed by Wei Liu
Browse files

dt-bindings: microsoft,vmbus: Add interrupt and DMA coherence properties 



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: default avatarRoman Kisel <romank@linux.microsoft.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250428210742.435282-8-romank@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
Message-ID: <20250428210742.435282-8-romank@linux.microsoft.com>
parent e956ee94

Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml

+14 −2
Original line number Diff line number Diff line
@@ -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>;

            };

        };

    };