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     maxItems: 3
  37     items:
  38       - const: usb3-if # The funcional clock
  39       - const: usb3s_clk # The usb3's external clock
  40       - const: usb_extal # The usb2's external clock
  41
  42   '#phy-cells':
  43     # see phy-bindings.txt in the same directory
  44     const: 0
  45
  46   power-domains:
  47     maxItems: 1
  48
  49   resets:
  50     maxItems: 1
  51
  52   renesas,ssc-range:
  53     description: |
  54       Enable/disable spread spectrum clock (ssc). 0 or the property doesn't
  55       exist means disabling the ssc. The actual value will be -<value> ppm.
  56     $ref: /schemas/types.yaml#/definitions/uint32
  57     enum: [ 0, 4003, 4492, 4980 ]
  58
  59 required:
  60   - compatible
  61   - reg
  62   - clocks
  63   - clock-names
  64   - '#phy-cells'
  65
  66 additionalProperties: false
  67
  68 examples:
  69   - |
  70     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
  71     #include <dt-bindings/power/r8a7795-sysc.h>
  72
  73     usb-phy@e65ee000 {
  74         compatible = "renesas,r8a7795-usb3-phy", "renesas,rcar-gen3-usb3-phy";
  75         reg = <0xe65ee000 0x90>;
  76         clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>;
  77         clock-names = "usb3-if", "usb3s_clk", "usb_extal";
  78         #phy-cells = <0>;
  79     };