linux-kernel - Re: [PATCH hyperv-next v4 4/6] dt-bindings: microsoft,vmbus: Add GIC and DMA coherence to the example

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Message-ID: <a10abb83-1bb2-4e62-b537-8b8948b055ea@linux.microsoft.com>
Date: Thu, 13 Feb 2025 12:50:17 -0800
From: Roman Kisel <romank@...ux.microsoft.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: arnd@...db.de, bhelgaas@...gle.com, bp@...en8.de,
 catalin.marinas@....com, conor+dt@...nel.org, dave.hansen@...ux.intel.com,
 decui@...rosoft.com, haiyangz@...rosoft.com, hpa@...or.com,
 krzk+dt@...nel.org, kw@...ux.com, kys@...rosoft.com, lpieralisi@...nel.org,
 manivannan.sadhasivam@...aro.org, mingo@...hat.com, robh@...nel.org,
 ssengar@...ux.microsoft.com, tglx@...utronix.de, wei.liu@...nel.org,
 will@...nel.org, devicetree@...r.kernel.org, linux-arch@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-hyperv@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, x86@...nel.org,
 benhill@...rosoft.com, bperkins@...rosoft.com, sunilmut@...rosoft.com
Subject: Re: [PATCH hyperv-next v4 4/6] dt-bindings: microsoft,vmbus: Add GIC
 and DMA coherence to the example



On 2/12/2025 3:57 PM, Roman Kisel wrote:
> 

[...]

Thank you for your guidance!! The below passes tests and addresses the
feedback you have provided. If no further comments from you, I'll
send the file in this form in the next version of the patch series (also
fixing the commit title and description).


# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/bus/microsoft,vmbus.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Microsoft Hyper-V VMBus

maintainers:
   - Saurabh Sengar <ssengar@...ux.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).

properties:
   compatible:
     const: microsoft,vmbus

   ranges: true

   '#address-cells':
     const: 2

   '#size-cells':
     const: 1

required:
   - compatible
   - ranges
   - interrupts
   - '#address-cells'
   - '#size-cells'

additionalProperties: true

examples:
   - |
     #include <dt-bindings/interrupt-controller/irq.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     soc {
         #address-cells = <2>;
         #size-cells = <1>;
         bus {
             compatible = "simple-bus";
             #address-cells = <2>;
             #size-cells = <1>;
             ranges;

             vmbus@...000000 {
                 compatible = "microsoft,vmbus";
                 #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>;
             };
         };
     };


>> Best regards,
>> Krzysztof
> 

-- 
Thank you,
Roman