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From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: linux-pci@vger.kernel.org
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Rob Herring <robh+dt@kernel.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Huacai Chen <chenhc@lemote.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Andrew Murray <amurray@thegoodpenguin.co.uk>,
	Paul Burton <paulburton@kernel.org>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mips@vger.kernel.org
Subject: [PATCH v5 4/6] dt-bindings: Document Loongson PCI Host Controller
Date: Fri, 24 Apr 2020 21:08:35 +0800	[thread overview]
Message-ID: <20200424130847.328584-5-jiaxun.yang@flygoat.com> (raw)
In-Reply-To: <20200424130847.328584-1-jiaxun.yang@flygoat.com>

PCI host controller found on Loongson PCHs and SoCs.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

--
v3: Fix ranges
---
 .../devicetree/bindings/pci/loongson.yaml     | 62 +++++++++++++++++++
 1 file changed, 62 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..20b4cf3fe696
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/loongson.yaml
@@ -0,0 +1,62 @@
+# 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@flygoat.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 extended config space register
+
+  ranges:
+    minItems: 1
+    maxItems: 3
+
+
+required:
+  - compatible
+  - reg
+  - ranges
+
+examples:
+  - |
+
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        pcie@1a000000 {
+            compatible = "loongson,rs780e-pci";
+            device_type = "pci";
+            #address-cells = <3>;
+            #size-cells = <2>;
+
+            // CPU_PHYSICAL(2)  SIZE(2)
+            reg = <0x0 0x1a000000  0x0 0x2000000>;
+
+            // BUS_ADDRESS(3)  CPU_PHYSICAL(2)  SIZE(2)
+            ranges = <0x01000000 0x0 0x00004000  0x0 0x00004000  0x0 0x00004000>,
+                     <0x02000000 0x0 0x40000000  0x0 0x40000000  0x0 0x40000000>;
+        };
+    };
+...
-- 
2.26.0.rc2


  parent reply	other threads:[~2020-04-24 13:10 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-24 13:08 [PATCH v5 0/6] Loongson PCI Generic Driver Jiaxun Yang
2020-04-24 13:08 ` [PATCH v5 1/6] PCI: OF: Don't remap iospace on unsupported platform Jiaxun Yang
2020-04-24 17:47   ` Rob Herring
2020-04-24 18:03     ` Jiaxun Yang
2020-04-24 19:05       ` Rob Herring
2020-04-24 13:08 ` [PATCH v5 2/6] PCI: Don't disable decoding when mmio_always_on is set Jiaxun Yang
2020-04-24 13:08 ` [PATCH v5 3/6] PCI: Add Loongson PCI Controller support Jiaxun Yang
2020-04-24 18:22   ` Rob Herring
2020-04-24 13:08 ` Jiaxun Yang [this message]
2020-04-24 18:38   ` [PATCH v5 4/6] dt-bindings: Document Loongson PCI Host Controller Rob Herring
2020-04-24 13:08 ` [PATCH v5 5/6] MIPS: DTS: Loongson64: Add PCI Controller Node Jiaxun Yang
2020-04-24 19:10   ` Rob Herring
2020-04-24 13:08 ` [PATCH v5 6/6] MIPS: Loongson64: Switch to generic PCI driver Jiaxun Yang

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