openwrt/target/linux/starfive/patches-6.1/0094-dt-binding-pci-add-JH7110-PCIe-dt-binding-documents.patch

From 3d555cfd72df1a02849565f281149d321e0f8425 Mon Sep 17 00:00:00 2001
From: Minda Chen <[email protected]>
Date: Thu, 6 Apr 2023 19:11:40 +0800
Subject: [PATCH 094/122] dt-binding: pci: add JH7110 PCIe dt-binding
 documents.

Add PCIe controller driver dt-binding documents
for StarFive JH7110 SoC platform.

Signed-off-by: Minda Chen <[email protected]>
---
 .../bindings/pci/starfive,jh7110-pcie.yaml    | 163 ++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml

--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml
@@ -0,0 +1,163 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/starfive,jh7110-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 PCIe 2.0 host controller
+
+maintainers:
+  - Minda Chen <[email protected]>
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+
+properties:
+  compatible:
+    const: starfive,jh7110-pcie
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: reg
+      - const: config
+
+  msi-parent: true
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: noc
+      - const: tl
+      - const: axi_mst0
+      - const: apb
+
+  resets:
+    items:
+      - description: AXI MST0 reset
+      - description: AXI SLAVE reset
+      - description: AXI SLAVE0 reset
+      - description: PCIE BRIDGE reset
+      - description: PCIE CORE reset
+      - description: PCIE APB reset
+
+  reset-names:
+    items:
+      - const: mst0
+      - const: slv0
+      - const: slv
+      - const: brg
+      - const: core
+      - const: apb
+
+  starfive,stg-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      items:
+        - description: phandle to System Register Controller stg_syscon node.
+        - description: register0 offset of STG_SYSCONSAIF__SYSCFG register for PCIe.
+        - description: register1 offset of STG_SYSCONSAIF__SYSCFG register for PCIe.
+        - description: register2 offset of STG_SYSCONSAIF__SYSCFG register for PCIe.
+        - description: register3 offset of STG_SYSCONSAIF__SYSCFG register for PCIe.
+    description:
+      The phandle to System Register Controller syscon node and the offset
+      of STG_SYSCONSAIF__SYSCFG register for PCIe. Total 4 regsisters offset
+      for PCIe.
+
+  pwren-gpios:
+    description: Should specify the GPIO for controlling the PCI bus device power on.
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  phys:
+    maxItems: 1
+
+  interrupt-controller:
+    type: object
+    properties:
+      '#address-cells':
+        const: 0
+
+      '#interrupt-cells':
+        const: 1
+
+      interrupt-controller: true
+
+    required:
+      - '#address-cells'
+      - '#interrupt-cells'
+      - interrupt-controller
+
+    additionalProperties: false
+
+required:
+  - reg
+  - reg-names
+  - "#interrupt-cells"
+  - interrupts
+  - interrupt-map-mask
+  - interrupt-map
+  - clocks
+  - clock-names
+  - resets
+  - msi-controller
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie0: pcie@2B000000 {
+            compatible = "starfive,jh7110-pcie";
+            #address-cells = <3>;
+            #size-cells = <2>;
+            #interrupt-cells = <1>;
+            reg = <0x0 0x2B000000 0x0 0x1000000>,
+                  <0x9 0x40000000 0x0 0x10000000>;
+            reg-names = "reg", "config";
+            device_type = "pci";
+            starfive,stg-syscon = <&stg_syscon 0xc0 0xc4 0x130 0x1b8>;
+            bus-range = <0x0 0xff>;
+            ranges = <0x82000000  0x0 0x30000000  0x0 0x30000000 0x0 0x08000000>,
+                     <0xc3000000  0x9 0x00000000  0x9 0x00000000 0x0 0x40000000>;
+            interrupt-parent = <&plic>;
+            interrupts = <56>;
+            interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+            interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc0 0x1>,
+                            <0x0 0x0 0x0 0x2 &pcie_intc0 0x2>,
+                            <0x0 0x0 0x0 0x3 &pcie_intc0 0x3>,
+                            <0x0 0x0 0x0 0x4 &pcie_intc0 0x4>;
+            msi-parent = <&pcie0>;
+            msi-controller;
+            clocks = <&syscrg 86>,
+                     <&stgcrg 10>,
+                     <&stgcrg 8>,
+                     <&stgcrg 9>;
+            clock-names = "noc", "tl", "axi_mst0", "apb";
+            resets = <&stgcrg 11>,
+                     <&stgcrg 12>,
+                     <&stgcrg 13>,
+                     <&stgcrg 14>,
+                     <&stgcrg 15>,
+                     <&stgcrg 16>;
+
+            pcie_intc0: interrupt-controller {
+                #address-cells = <0>;
+                #interrupt-cells = <1>;
+                interrupt-controller;
+            };
+        };
+    };