[PATCH v2 1/2] dt-bindings: rockchip: Add DesignWare based PCIe controller

[Simon Xue]

Signed-off-by: Simon Xue <xxm at rock-chips.com>
---
 .../bindings/pci/rockchip-dw-pcie.yaml        | 140 ++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml

diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
new file mode 100644
index 000000000000..9d3a57f5305e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
@@ -0,0 +1,140 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare based PCIe RC controller on Rockchip SoCs
+
+maintainers:
+  - Shawn Lin <shawn.lin at rock-chips.com>
+  - Simon Xue <xxm at rock-chips.com>
+
+description: |+
+  RK3568 SoC PCIe host controller is based on the Synopsys DesignWare
+  PCIe IP and thus inherits all the common properties defined in
+  designware-pcie.txt.
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+# We need a select here so we don't match all nodes with 'snps,dw-pcie'
+select:
+  properties:
+    compatible:
+      contains:
+        const: rockchip,rk3568-pcie
+  required:
+    - compatible
+
+properties:
+  compatible:
+    item:
+      - const: rockchip,rk3568-pcie
+      - const: snps,dw-pcie
+  reg:
+    maxItems: 1
+
+  interrupt:
+      - description: system information
+      - description: power management control
+      - description: PCIe message
+      - description: legacy interrupt
+      - description: error report
+
+  interrupt-names:
+    items:
+      - const: sys
+      - const: pmc
+      - const: msg
+      - const: legacy
+      - const: err
+
+  clocks:
+    items:
+      - description: AHB clock for PCIe master
+      - description: AHB clock for PCIe slave
+      - description: AHB clock for PCIe dbi
+      - description: APB clock for PCIe
+      - description: Auxiliary clock for PCIe
+
+  clock-names:
+    items:
+      - const: aclk_mst
+      - const: aclk_slv
+      - const: aclk_dbi
+      - const: pclk
+      - const: aux
+
+  msi-map: true
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: pipe
+
+required:
+  - compatible
+  - bus-range
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - msi-map
+  - num-lanes
+  - phys
+  - phy-names
+  - power-domains
+  - resets
+  - reset-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3568-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/rk3568-power.h>
+
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie3x2: pcie at fe280000 {
+            compatible = "rockchip,rk3568-pcie", "snps,dw-pcie";
+            #address-cells = <3>;
+            #size-cells = <2>;
+            bus-range = <0x20 0x2f>;
+            reg = <0x3 0xc0800000 0x0 0x400000>,
+                  <0x0 0xfe280000 0x0 0x10000>;
+            reg-names = "pcie-dbi", "pcie-apb";
+            interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "sys", "pmc", "msg", "legacy", "err";
+            clocks = <&cru ACLK_PCIE30X2_MST>, <&cru ACLK_PCIE30X2_SLV>,
+                     <&cru ACLK_PCIE30X2_DBI>, <&cru PCLK_PCIE30X2>,
+                     <&cru CLK_PCIE30X2_AUX_NDFT>;
+            clock-names = "aclk_mst", "aclk_slv",
+                          "aclk_dbi", "pclk",
+                          "aux";
+            msi-map = <0x2000 &its 0x2000 0x1000>;
+            num-lanes = <2>;
+            phys = <&pcie30phy>;
+            phy-names = "pcie-phy";
+            power-domains = <&power RK3568_PD_PIPE>;
+            ranges = <0x00000800 0x0 0x80000000 0x3 0x80000000 0x0 0x800000
+                      0x81000000 0x0 0x80800000 0x3 0x80800000 0x0 0x100000
+                      0x83000000 0x0 0x80900000 0x3 0x80900000 0x0 0x3f700000>;
+            resets = <&cru SRST_PCIE30X2_POWERUP>;
+            reset-names = "pipe";
+        };
+    };
+...
-- 
2.25.1