linux-kernel - [PATCH 3/5] dt-bindings: Document Loongson PCI Host Controller

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Message-ID: <20200330114239.1112759-4-jiaxun.yang@flygoat.com>
Date:   Mon, 30 Mar 2020 19:42:28 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Paul Burton <paulburton@...nel.org>, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] dt-bindings: Document Loongson PCI Host Controller

PCI host controller found on Loongson PCHs and SoCs.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 .../devicetree/bindings/pci/loongson.yaml     | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/loongson.yaml

diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
new file mode 100644
index 000000000000..623847980189
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/loongson.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/loongson.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson PCI Host Controller
+
+maintainers:
+  - Jiaxun Yang <jiaxun.yang@...goat.com>
+
+description: |+
+  PCI host controller found on Loongson PCHs and SoCs.
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: loongson,rs780e-pci
+      - const: loongson,ls7a-pci
+      - const: loongson,ls2k-pci
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: CFG0 standard config space register
+      - description: CFG1 extend config space register
+
+  ranges:
+    maxItems: 3
+
+
+required:
+  - compatible
+  - reg
+  - ranges
+
+examples:
+  - |
+    pci@...00000 {
+      compatible = "loongson,rs780e-pci";
+      device_type = "pci";
+      #address-cells = <3>;
+      #size-cells = <2>;
+
+      reg = <0x1a000000 0x2000000>;
+      ranges = <0x02000000 0 0x40000000 0x40000000 0 0x40000000>;
+    };
+...
-- 
2.26.0.rc2