Documentation/devicetree/bindings/pci/rockchip,rk3399-pcie.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pci/rockchip,rk3399-pcie.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Rockchip AXI PCIe Root Port Bridge Host
   8
   9 maintainers:
  10   - Shawn Lin <shawn.lin@rock-chips.com>
  11
  12 allOf:
  13   - $ref: /schemas/pci/pci-bus.yaml#
  14   - $ref: rockchip,rk3399-pcie-common.yaml#
  15
  16 properties:
  17   compatible:
  18     const: rockchip,rk3399-pcie
  19
  20   reg: true
  21
  22   reg-names:
  23     items:
  24       - const: axi-base
  25       - const: apb-base
  26
  27   interrupts:
  28     maxItems: 3
  29
  30   interrupt-names:
  31     items:
  32       - const: sys
  33       - const: legacy
  34       - const: client
  35
  36   aspm-no-l0s:
  37     description: This property is needed if using 24MHz OSC for RC's PHY.
  38
  39   ep-gpios:
  40     description: pre-reset GPIO
  41
  42   vpcie12v-supply:
  43     description: The 12v regulator to use for PCIe.
  44
  45   vpcie3v3-supply:
  46     description: The 3.3v regulator to use for PCIe.
  47
  48   vpcie1v8-supply:
  49     description: The 1.8v regulator to use for PCIe.
  50
  51   vpcie0v9-supply:
  52     description: The 0.9v regulator to use for PCIe.
  53
  54   interrupt-controller:
  55     type: object
  56     additionalProperties: false
  57
  58     properties:
  59       '#address-cells':
  60         const: 0
  61
  62       '#interrupt-cells':
  63         const: 1
  64
  65       interrupt-controller: true
  66
  67 required:
  68   - ranges
  69   - "#interrupt-cells"
  70   - interrupts
  71   - interrupt-controller
  72   - interrupt-map
  73   - interrupt-map-mask
  74   - msi-map
  75
  76 unevaluatedProperties: false
  77
  78 examples:
  79   - |
  80     #include <dt-bindings/interrupt-controller/arm-gic.h>
  81     #include <dt-bindings/gpio/gpio.h>
  82     #include <dt-bindings/clock/rk3399-cru.h>
  83
  84     bus {
  85         #address-cells = <2>;
  86         #size-cells = <2>;
  87
  88         pcie@f8000000 {
  89             compatible = "rockchip,rk3399-pcie";
  90             device_type = "pci";
  91             #address-cells = <3>;
  92             #size-cells = <2>;
  93             clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
  94               <&cru PCLK_PCIE>, <&cru SCLK_PCIE_PM>;
  95             clock-names = "aclk", "aclk-perf",
  96                     "hclk", "pm";
  97             interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH 0>,
  98                   <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH 0>,
  99                   <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH 0>;
 100             interrupt-names = "sys", "legacy", "client";
 101             ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
 102             ranges = <0x83000000 0x0 0xfa000000 0x0 0xfa000000 0x0 0x600000
 103                 0x81000000 0x0 0xfa600000 0x0 0xfa600000 0x0 0x100000>;
 104             num-lanes = <4>;
 105             msi-map = <0x0 &its 0x0 0x1000>;
 106             reg = <0x0 0xf8000000 0x0 0x2000000>, <0x0 0xfd000000 0x0 0x1000000>;
 107             reg-names = "axi-base", "apb-base";
 108             resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
 109               <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE> ,
 110               <&cru SRST_PCIE_PM>, <&cru SRST_P_PCIE>, <&cru SRST_A_PCIE>;
 111             reset-names = "core", "mgmt", "mgmt-sticky", "pipe",
 112                     "pm", "pclk", "aclk";
 113             /* deprecated legacy PHY model */
 114             phys = <&pcie_phy>;
 115             phy-names = "pcie-phy";
 116             pinctrl-names = "default";
 117             pinctrl-0 = <&pcie_clkreq>;
 118             #interrupt-cells = <1>;
 119             interrupt-map-mask = <0 0 0 7>;
 120             interrupt-map = <0 0 0 1 &pcie0_intc 0>,
 121                 <0 0 0 2 &pcie0_intc 1>,
 122                 <0 0 0 3 &pcie0_intc 2>,
 123                 <0 0 0 4 &pcie0_intc 3>;
 124
 125             pcie0_intc: interrupt-controller {
 126                 interrupt-controller;
 127                 #address-cells = <0>;
 128                 #interrupt-cells = <1>;
 129             };
 130         };
 131     };
 132 ...