dt-bindings: PCI: Add StarFive JH7110 PCIe controller

Add StarFive JH7110 SoC PCIe controller dt-bindings. JH7110 using PLDA
XpressRICH PCIe host controller IP.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Hal Feng <hal.feng@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>

1 files changed, 120 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml b/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml
new file mode 100644
index 000000000000..67151aaa3948
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml
@@ -0,0 +1,120 @@
+# 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 host controller
+
+maintainers:
+  - Kevin Xie <kevin.xie@starfivetech.com>
+
+allOf:
+  - $ref: plda,xpressrich3-axi-common.yaml#
+
+properties:
+  compatible:
+    const: starfive,jh7110-pcie
+
+  clocks:
+    items:
+      - description: NOC bus clock
+      - description: Transport layer clock
+      - description: AXI MST0 clock
+      - description: APB clock
+
+  clock-names:
+    items:
+      - const: noc
+      - const: tl
+      - const: axi_mst0
+      - const: apb
+
+  resets:
+    items:
+      - description: AXI MST0 reset
+      - description: AXI SLAVE0 reset
+      - description: AXI SLAVE 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
+    description:
+      The phandle to System Register Controller syscon node.
+
+  perst-gpios:
+    description: GPIO controlled connection to PERST# signal
+    maxItems: 1
+
+  phys:
+    description:
+      Specified PHY is attached to PCIe controller.
+    maxItems: 1
+
+required:
+  - clocks
+  - resets
+  - starfive,stg-syscon
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie@940000000 {
+            compatible = "starfive,jh7110-pcie";
+            reg = <0x9 0x40000000 0x0 0x10000000>,
+                  <0x0 0x2b000000 0x0 0x1000000>;
+            reg-names = "cfg", "apb";
+            #address-cells = <3>;
+            #size-cells = <2>;
+            #interrupt-cells = <1>;
+            device_type = "pci";
+            ranges = <0x82000000  0x0 0x30000000  0x0 0x30000000 0x0 0x08000000>,
+                     <0xc3000000  0x9 0x00000000  0x9 0x00000000 0x0 0x40000000>;
+            starfive,stg-syscon = <&stg_syscon>;
+            bus-range = <0x0 0xff>;
+            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-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>;
+            perst-gpios = <&gpios 26 GPIO_ACTIVE_LOW>;
+            phys = <&pciephy0>;
+
+            pcie_intc0: interrupt-controller {
+                #address-cells = <0>;
+                #interrupt-cells = <1>;
+                interrupt-controller;
+            };
+        };
+    };