dt-bindings: PCI: 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@andestech.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260225085504.3757601-2-randolph@andestech.com

1 files changed, 89 insertions, 0 deletions

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..97ba97fdc5a9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/andestech,qilai-pcie.yaml
@@ -0,0 +1,89 @@
+# 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.
+
+maintainers:
+  - Randolph Lin <randolph@andestech.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
+
+  dma-coherent: true
+
+  ranges:
+    maxItems: 2
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: msi
+
+required:
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      pcie@80000000 {
+        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";
+        dma-coherent;
+
+        linux,pci-domain = <0>;
+        #address-cells = <3>;
+        #size-cells = <2>;
+        ranges = <0x02000000 0x00 0x10000000 0x00 0x10000000 0x00 0xf0000000>,
+                 <0x43000000 0x01 0x00000000 0x01 0x00000000 0x02 0x00000000>;
+
+        #interrupt-cells = <1>;
+        interrupts = <0xf>;
+        interrupt-names = "msi";
+        interrupt-parent = <&plic0>;
+        interrupt-map-mask = <0 0 0 0>;
+        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>;
+      };
+    };
+...