linux-kernel - [PATCH v2 2/5] dt-bindings: Add Andes QiLai PCIe support

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Message-ID: <20250916100417.3036847-3-randolph@andestech.com>
Date: Tue, 16 Sep 2025 18:04:14 +0800
From: Randolph Lin <randolph@...estech.com>
To: <linux-kernel@...r.kernel.org>
CC: <linux-pci@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <jingoohan1@...il.com>,
        <mani@...nel.org>, <lpieralisi@...nel.org>, <kwilczynski@...nel.org>,
        <robh@...nel.org>, <bhelgaas@...gle.com>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <alex@...ti.fr>, <aou@...s.berkeley.edu>,
        <palmer@...belt.com>, <paul.walmsley@...ive.com>,
        <ben717@...estech.com>, <inochiama@...il.com>,
        <thippeswamy.havalige@....com>, <namcao@...utronix.de>,
        <shradha.t@...sung.com>, <randolph.sklin@...il.com>,
        <tim609@...estech.com>, Randolph Lin <randolph@...estech.com>
Subject: [PATCH v2 2/5] dt-bindings: Add Andes QiLai PCIe support

Add the Andes QiLai PCIe node, which includes 3 Root Complexes.
Only one example is required in the DTS bindings YAML file.

Signed-off-by: Randolph Lin <randolph@...estech.com>
---
 .../bindings/pci/andestech,qilai-pcie.yaml    | 102 ++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/andestech,qilai-pcie.yaml

diff --git a/Documentation/devicetree/bindings/pci/andestech,qilai-pcie.yaml b/Documentation/devicetree/bindings/pci/andestech,qilai-pcie.yaml
new file mode 100644
index 000000000000..41d3d4eb0026
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/andestech,qilai-pcie.yaml
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/andestech,qilai-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Andes QiLai PCIe host controller
+
+description: |+
+  Andes QiLai PCIe host controller is based on the Synopsys DesignWare
+  PCI core. It shares common features with the PCIe DesignWare core and
+  inherits common properties defined in
+  Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml.
+
+maintainers:
+  - Randolph Lin <randolph@...estech.com>
+
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie.yaml#
+
+properties:
+  compatible:
+    const: andestech,qilai-pcie
+
+  reg:
+    items:
+      - description: Data Bus Interface (DBI) registers.
+      - description: APB registers.
+      - description: PCIe configuration space region.
+
+  reg-names:
+    items:
+      - const: dbi
+      - const: apb
+      - const: config
+
+  ranges:
+    maxItems: 2
+
+  interrupts:
+    maxItems: 1
+
+  "#interrupt-cells":
+    const: 1
+
+  interrupt-map: true
+
+required:
+  - reg
+  - reg-names
+  - "#interrupt-cells"
+  - interrupts
+  - interrupt-names
+  - interrupt-map-mask
+  - interrupt-map
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      bus@...00000 {
+        compatible = "simple-bus";
+        #address-cells = <2>;
+        #size-cells = <2>;
+        dma-ranges = <0x44 0x00000000 0x04 0x00000000 0x04 0x00000000>;
+        ranges = <0x00 0x80000000 0x00 0x80000000 0x00 0x20000000>,
+                 <0x00 0x04000000 0x00 0x04000000 0x00 0x00001000>,
+                 <0x00 0x00000000 0x20 0x00000000 0x20 0x00000000>;
+
+        pci@...00000 {
+          compatible = "andestech,qilai-pcie";
+          device_type = "pci";
+          reg = <0x0 0x80000000 0x0 0x20000000>,
+                <0x0 0x04000000 0x0 0x00001000>,
+                <0x0 0x00000000 0x0 0x00010000>;
+          reg-names = "dbi", "apb", "config";
+
+          bus-range = <0x0 0xff>;
+          num-viewport = <4>;
+          #address-cells = <3>;
+          #size-cells = <2>;
+          ranges = <0x02000000 0x00 0x10000000 0x00 0x10000000 0x0 0xf0000000>,
+                   <0x43000000 0x01 0x00000000 0x01 0x0000000 0x1f 0x00000000>;
+
+          #interrupt-cells = <1>;
+          interrupts = <0xf>;
+          interrupt-names = "msi";
+          interrupt-parent = <&plic0>;
+          interrupt-map-mask = <0 0 0 7>;
+          interrupt-map = <0 0 0 1 &plic0 0xf IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 2 &plic0 0xf IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 3 &plic0 0xf IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 4 &plic0 0xf IRQ_TYPE_LEVEL_HIGH>;
+        };
+      };
+    };
-- 
2.34.1