Documentation/devicetree/bindings/pci/intel,keembay-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/intel,keembay-pcie.yaml#"
   5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
   6
   7 title: Intel Keem Bay PCIe controller Root Complex mode
   8
   9 maintainers:
  10   - Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
  11   - Srikanth Thokala <srikanth.thokala@intel.com>
  12
  13 allOf:
  14   - $ref: /schemas/pci/pci-bus.yaml#
  15
  16 properties:
  17   compatible:
  18     const: intel,keembay-pcie
  19
  20   ranges:
  21     maxItems: 1
  22
  23   reset-gpios:
  24     maxItems: 1
  25
  26   reg:
  27     maxItems: 4
  28
  29   reg-names:
  30     items:
  31       - const: dbi
  32       - const: atu
  33       - const: config
  34       - const: apb
  35
  36   clocks:
  37     maxItems: 2
  38
  39   clock-names:
  40     items:
  41       - const: master
  42       - const: aux
  43
  44   interrupts:
  45     maxItems: 3
  46
  47   interrupt-names:
  48     items:
  49       - const: pcie
  50       - const: pcie_ev
  51       - const: pcie_err
  52
  53   num-lanes:
  54     description: Number of lanes to use.
  55     enum: [ 1, 2 ]
  56
  57 required:
  58   - compatible
  59   - reg
  60   - reg-names
  61   - ranges
  62   - clocks
  63   - clock-names
  64   - interrupts
  65   - interrupt-names
  66   - reset-gpios
  67
  68 unevaluatedProperties: false
  69
  70 examples:
  71   - |
  72     #include <dt-bindings/interrupt-controller/arm-gic.h>
  73     #include <dt-bindings/interrupt-controller/irq.h>
  74     #include <dt-bindings/gpio/gpio.h>
  75     #define KEEM_BAY_A53_PCIE
  76     #define KEEM_BAY_A53_AUX_PCIE
  77     pcie@37000000 {
  78           compatible = "intel,keembay-pcie";
  79           reg = <0x37000000 0x00001000>,
  80                 <0x37300000 0x00001000>,
  81                 <0x36e00000 0x00200000>,
  82                 <0x37800000 0x00000200>;
  83           reg-names = "dbi", "atu", "config", "apb";
  84           #address-cells = <3>;
  85           #size-cells = <2>;
  86           device_type = "pci";
  87           ranges = <0x02000000 0 0x36000000 0x36000000 0 0x00e00000>;
  88           interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
  89                        <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
  90                        <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
  91           interrupt-names = "pcie", "pcie_ev", "pcie_err";
  92           clocks = <&scmi_clk KEEM_BAY_A53_PCIE>,
  93                    <&scmi_clk KEEM_BAY_A53_AUX_PCIE>;
  94           clock-names = "master", "aux";
  95           reset-gpios = <&pca2 9 GPIO_ACTIVE_LOW>;
  96           num-lanes = <2>;
  97     };