Bindings/pci/fsl,imx6q-pcie-common.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pci/fsl,imx6q-pcie-common.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Freescale i.MX6 PCIe RC/EP controller
   8
   9 maintainers:
  10   - Lucas Stach <l.stach@pengutronix.de>
  11   - Richard Zhu <hongxing.zhu@nxp.com>
  12
  13 description:
  14   Generic Freescale i.MX PCIe Root Port and Endpoint controller
  15   properties.
  16
  17 properties:
  18   clocks:
  19     minItems: 3
  20     maxItems: 4
  21
  22   clock-names:
  23     minItems: 3
  24     maxItems: 4
  25
  26   num-lanes:
  27     const: 1
  28
  29   fsl,imx7d-pcie-phy:
  30     $ref: /schemas/types.yaml#/definitions/phandle
  31     description: A phandle to an fsl,imx7d-pcie-phy node. Additional
  32       required properties for imx7d-pcie, imx7d-pcie-ep, imx8mq-pcie,
  33       and imx8mq-pcie-ep.
  34
  35   power-domains:
  36     minItems: 1
  37     items:
  38       - description: The phandle pointing to the DISPLAY domain for
  39           imx6sx-pcie, imx6sx-pcie-ep, to PCIE_PHY power domain for
  40           imx7d-pcie, imx7d-pcie-ep, imx8mq-pcie and imx8mq-pcie-ep.
  41       - description: The phandle pointing to the PCIE_PHY power domains
  42           for imx6sx-pcie and imx6sx-pcie-ep.
  43
  44   power-domain-names:
  45     minItems: 1
  46     items:
  47       - const: pcie
  48       - const: pcie_phy
  49
  50   resets:
  51     minItems: 2
  52     maxItems: 3
  53     description: Phandles to PCIe-related reset lines exposed by SRC
  54       IP block. Additional required by imx7d-pcie, imx7d-pcie-ep,
  55       imx8mq-pcie, and imx8mq-pcie-ep.
  56
  57   reset-names:
  58     minItems: 2
  59     maxItems: 3
  60
  61   fsl,tx-deemph-gen1:
  62     description: Gen1 De-emphasis value (optional required).
  63     $ref: /schemas/types.yaml#/definitions/uint32
  64     default: 0
  65
  66   fsl,tx-deemph-gen2-3p5db:
  67     description: Gen2 (3.5db) De-emphasis value (optional required).
  68     $ref: /schemas/types.yaml#/definitions/uint32
  69     default: 0
  70
  71   fsl,tx-deemph-gen2-6db:
  72     description: Gen2 (6db) De-emphasis value (optional required).
  73     $ref: /schemas/types.yaml#/definitions/uint32
  74     default: 20
  75
  76   fsl,tx-swing-full:
  77     description: Gen2 TX SWING FULL value (optional required).
  78     $ref: /schemas/types.yaml#/definitions/uint32
  79     default: 127
  80
  81   fsl,tx-swing-low:
  82     description: TX launch amplitude swing_low value (optional required).
  83     $ref: /schemas/types.yaml#/definitions/uint32
  84     default: 127
  85
  86   fsl,max-link-speed:
  87     description: Specify PCI Gen for link capability (optional required).
  88       Note that the IMX6 LVDS clock outputs do not meet gen2 jitter
  89       requirements and thus for gen2 capability a gen2 compliant clock
  90       generator should be used and configured.
  91     $ref: /schemas/types.yaml#/definitions/uint32
  92     enum: [1, 2, 3, 4]
  93     default: 1
  94
  95   phys:
  96     maxItems: 1
  97
  98   phy-names:
  99     const: pcie-phy
 100
 101   vpcie-supply:
 102     description: Should specify the regulator in charge of PCIe port power.
 103       The regulator will be enabled when initializing the PCIe host and
 104       disabled either as part of the init process or when shutting down
 105       the host (optional required).
 106
 107   vph-supply:
 108     description: Should specify the regulator in charge of VPH one of
 109       the three PCIe PHY powers. This regulator can be supplied by both
 110       1.8v and 3.3v voltage supplies (optional required).
 111
 112 required:
 113   - clocks
 114   - clock-names
 115   - num-lanes
 116
 117 allOf:
 118   - if:
 119       properties:
 120         compatible:
 121           contains:
 122             enum:
 123               - fsl,imx6sx-pcie
 124               - fsl,imx6sx-pcie-ep
 125     then:
 126       properties:
 127         clock-names:
 128           items:
 129             - {}
 130             - {}
 131             - const: pcie_phy
 132             - const: pcie_inbound_axi
 133         power-domains:
 134           minItems: 2
 135         power-domain-names:
 136           minItems: 2
 137
 138   - if:
 139       properties:
 140         compatible:
 141           contains:
 142             enum:
 143               - fsl,imx8mq-pcie
 144               - fsl,imx8mq-pcie-ep
 145     then:
 146       properties:
 147         clock-names:
 148           items:
 149             - {}
 150             - {}
 151             - const: pcie_phy
 152             - const: pcie_aux
 153   - if:
 154       properties:
 155         compatible:
 156           not:
 157             contains:
 158               enum:
 159                 - fsl,imx6sx-pcie
 160                 - fsl,imx8mq-pcie
 161                 - fsl,imx6sx-pcie-ep
 162                 - fsl,imx8mq-pcie-ep
 163     then:
 164       properties:
 165         clocks:
 166           maxItems: 3
 167         clock-names:
 168           maxItems: 3
 169
 170   - if:
 171       properties:
 172         compatible:
 173           contains:
 174             enum:
 175               - fsl,imx6q-pcie
 176               - fsl,imx6qp-pcie
 177               - fsl,imx7d-pcie
 178               - fsl,imx6q-pcie-ep
 179               - fsl,imx6qp-pcie-ep
 180               - fsl,imx7d-pcie-ep
 181     then:
 182       properties:
 183         clock-names:
 184           maxItems: 3
 185           contains:
 186             const: pcie_phy
 187
 188   - if:
 189       properties:
 190         compatible:
 191           contains:
 192             enum:
 193               - fsl,imx8mm-pcie
 194               - fsl,imx8mp-pcie
 195               - fsl,imx8mm-pcie-ep
 196               - fsl,imx8mp-pcie-ep
 197     then:
 198       properties:
 199         clock-names:
 200           maxItems: 3
 201           contains:
 202             const: pcie_aux
 203   - if:
 204       properties:
 205         compatible:
 206           contains:
 207             enum:
 208               - fsl,imx6q-pcie
 209               - fsl,imx6qp-pcie
 210               - fsl,imx6q-pcie-ep
 211               - fsl,imx6qp-pcie-ep
 212     then:
 213       properties:
 214         power-domains: false
 215         power-domain-names: false
 216
 217   - if:
 218       not:
 219         properties:
 220           compatible:
 221             contains:
 222               enum:
 223                 - fsl,imx6sx-pcie
 224                 - fsl,imx6q-pcie
 225                 - fsl,imx6qp-pcie
 226                 - fsl,imx6sx-pcie-ep
 227                 - fsl,imx6q-pcie-ep
 228                 - fsl,imx6qp-pcie-ep
 229     then:
 230       properties:
 231         power-domains:
 232           maxItems: 1
 233         power-domain-names: false
 234
 235   - if:
 236       properties:
 237         compatible:
 238           contains:
 239             enum:
 240               - fsl,imx6q-pcie
 241               - fsl,imx6sx-pcie
 242               - fsl,imx6qp-pcie
 243               - fsl,imx7d-pcie
 244               - fsl,imx8mq-pcie
 245               - fsl,imx6q-pcie-ep
 246               - fsl,imx6sx-pcie-ep
 247               - fsl,imx6qp-pcie-ep
 248               - fsl,imx7d-pcie-ep
 249               - fsl,imx8mq-pcie-ep
 250     then:
 251       properties:
 252         resets:
 253           minItems: 3
 254         reset-names:
 255           items:
 256             - const: pciephy
 257             - const: apps
 258             - const: turnoff
 259     else:
 260       properties:
 261         resets:
 262           maxItems: 2
 263         reset-names:
 264           items:
 265             - const: apps
 266             - const: turnoff
 267
 268 additionalProperties: true
 269
 270 ...