linux-kernel - [PATCH v5 1/4] dt-bindings: interrupt-controller: Convert MSI controller to json-schema

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Date:   Tue, 21 Sep 2021 20:34:12 +0200
From:   Mark Kettenis <kettenis@...nbsd.org>
To:     devicetree@...r.kernel.org
Cc:     maz@...nel.org, robin.murphy@....com, sven@...npeter.dev,
        alyssa@...enzweig.io, Mark Kettenis <kettenis@...nbsd.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Hector Martin <marcan@...can.st>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Jim Quinlan <jim2101024@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Daire McNamara <daire.mcnamara@...rochip.com>,
        Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pci@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org
Subject: [PATCH v5 1/4] dt-bindings: interrupt-controller: Convert MSI controller to json-schema

Split the MSI controller bindings from the MSI binding document
into DT schema format using json-schema.

Acked-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Mark Kettenis <kettenis@...nbsd.org>
---
 .../interrupt-controller/msi-controller.yaml  | 38 +++++++++++++++++++
 .../bindings/pci/brcm,stb-pcie.yaml           |  1 +
 .../bindings/pci/microchip,pcie-host.yaml     |  1 +
 3 files changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml b/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml
new file mode 100644
index 000000000000..58d898d5b943
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/msi-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MSI controller
+
+maintainers:
+  - Marc Zyngier <maz@...nel.org>
+
+description: |
+  An MSI controller signals interrupts to a CPU when a write is made
+  to an MMIO address by some master. An MSI controller may feature a
+  number of doorbells.
+
+properties:
+  "#msi-cells":
+    description: |
+      The number of cells in an msi-specifier, required if not zero.
+
+      Typically this will encode information related to sideband data,
+      and will not encode doorbells or payloads as these can be
+      configured dynamically.
+
+      The meaning of the msi-specifier is defined by the device tree
+      binding of the specific MSI controller.
+    enum: [0, 1]
+
+  msi-controller:
+    description:
+      Identifies the node as an MSI controller.
+    $ref: /schemas/types.yaml#/definitions/flag
+
+dependencies:
+  "#msi-cells": [ msi-controller ]
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
index b9589a0daa5c..1fe102743f82 100644
--- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
@@ -88,6 +88,7 @@ required:
 
 allOf:
   - $ref: /schemas/pci/pci-bus.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
   - if:
       properties:
         compatible:
diff --git a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
index fb95c276a986..7b0776457178 100644
--- a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
@@ -11,6 +11,7 @@ maintainers:
 
 allOf:
   - $ref: /schemas/pci/pci-bus.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
 
 properties:
   compatible:
-- 
2.33.0