Documentation/devicetree/bindings/phy/renesas,usb3-phy.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/phy/renesas,usb3-phy.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Renesas R-Car generation 3 USB 3.0 PHY
   8
   9 maintainers:
  10   - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  11
  12 properties:
  13   compatible:
  14     items:
  15       - enum:
  16           - renesas,r8a774a1-usb3-phy # RZ/G2M
  17           - renesas,r8a774b1-usb3-phy # RZ/G2N
  18           - renesas,r8a774e1-usb3-phy # RZ/G2H
  19           - renesas,r8a7795-usb3-phy  # R-Car H3
  20           - renesas,r8a7796-usb3-phy  # R-Car M3-W
  21           - renesas,r8a77961-usb3-phy # R-Car M3-W+
  22           - renesas,r8a77965-usb3-phy # R-Car M3-N
  23       - const: renesas,rcar-gen3-usb3-phy
  24
  25   reg:
  26     maxItems: 1
  27
  28   clocks:
  29     minItems: 2
  30     maxItems: 3
  31
  32   clock-names:
  33     # If you want to use the ssc, the clock-frequency of usb_extal
  34     # must not be 0.
  35     minItems: 2
  36     items:
  37       - const: usb3-if # The funcional clock
  38       - const: usb3s_clk # The usb3's external clock
  39       - const: usb_extal # The usb2's external clock
  40
  41   '#phy-cells':
  42     # see phy-bindings.txt in the same directory
  43     const: 0
  44
  45   power-domains:
  46     maxItems: 1
  47
  48   resets:
  49     maxItems: 1
  50
  51   renesas,ssc-range:
  52     description: |
  53       Enable/disable spread spectrum clock (ssc). 0 or the property doesn't
  54       exist means disabling the ssc. The actual value will be -<value> ppm.
  55     $ref: /schemas/types.yaml#/definitions/uint32
  56     enum: [ 0, 4003, 4492, 4980 ]
  57
  58 required:
  59   - compatible
  60   - reg
  61   - clocks
  62   - clock-names
  63   - '#phy-cells'
  64
  65 additionalProperties: false
  66
  67 examples:
  68   - |
  69     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
  70     #include <dt-bindings/power/r8a7795-sysc.h>
  71
  72     usb-phy@e65ee000 {
  73         compatible = "renesas,r8a7795-usb3-phy", "renesas,rcar-gen3-usb3-phy";
  74         reg = <0xe65ee000 0x90>;
  75         clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>;
  76         clock-names = "usb3-if", "usb3s_clk", "usb_extal";
  77         #phy-cells = <0>;
  78     };