fsl,imx8mq-usb-phy.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/phy/fsl,imx8mq-usb-phy.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Freescale i.MX8MQ USB3 PHY
  8
  9maintainers:
 10  - Li Jun <jun.li@nxp.com>
 11
 12properties:
 13  compatible:
 14    oneOf:
 15      - enum:
 16          - fsl,imx8mq-usb-phy
 17          - fsl,imx8mp-usb-phy
 18      - items:
 19          - const: fsl,imx95-usb-phy
 20          - const: fsl,imx8mp-usb-phy
 21
 22  reg:
 23    minItems: 1
 24    maxItems: 2
 25
 26  "#phy-cells":
 27    const: 0
 28
 29  clocks:
 30    minItems: 1
 31    items:
 32      - description: PHY configuration clock
 33      - description: Alternate PHY reference clock
 34
 35  clock-names:
 36    minItems: 1
 37    items:
 38      - const: phy
 39      - const: alt
 40
 41  power-domains:
 42    maxItems: 1
 43
 44  vbus-supply:
 45    description:
 46      A phandle to the regulator for USB VBUS.
 47
 48  fsl,phy-tx-vref-tune-percent:
 49    description:
 50      Tunes the HS DC level relative to the nominal level
 51    minimum: 90
 52    maximum: 124
 53
 54  fsl,phy-tx-rise-tune-percent:
 55    description:
 56      Adjusts the rise/fall time duration of the HS waveform relative to
 57      its nominal value
 58    minimum: 90
 59    maximum: 120
 60
 61  fsl,phy-tx-preemp-amp-tune-microamp:
 62    description:
 63      Adjust amount of current sourced to DPn and DMn after a J-to-K
 64      or K-to-J transition. Default is 0 (disabled).
 65    minimum: 0
 66    maximum: 1800
 67
 68  fsl,phy-tx-vboost-level-microvolt:
 69    description:
 70      Adjust the boosted transmit launch pk-pk differential amplitude
 71    enum: [844, 1008, 1156]
 72
 73  fsl,phy-comp-dis-tune-percent:
 74    description:
 75      Adjust the voltage level used to detect a disconnect event at the host
 76      relative to the nominal value
 77    minimum: 91
 78    maximum: 115
 79
 80  fsl,phy-pcs-tx-deemph-3p5db-attenuation-db:
 81    description:
 82      Adjust TX de-emphasis attenuation in dB at nominal
 83      3.5dB point as per USB specification
 84    minimum: 0
 85    maximum: 36
 86
 87  fsl,phy-pcs-tx-swing-full-percent:
 88    description:
 89      Scaling of the voltage defined by fsl,phy-tx-vboost-level-microvolt
 90    minimum: 0
 91    maximum: 100
 92
 93required:
 94  - compatible
 95  - reg
 96  - "#phy-cells"
 97  - clocks
 98  - clock-names
 99
100allOf:
101  - if:
102      properties:
103        compatible:
104          contains:
105            enum:
106              - fsl,imx95-usb-phy
107    then:
108      properties:
109        reg:
110          items:
111            - description: USB PHY Control range
112            - description: USB PHY TCA Block range
113    else:
114      properties:
115        reg:
116          maxItems: 1
117
118  - if:
119      properties:
120        compatible:
121          enum:
122            - fsl,imx8mq-usb-phy
123            - fsl,imx8mp-usb-phy
124    then:
125      properties:
126        fsl,phy-tx-vref-tune-percent:
127          minimum: 94
128        fsl,phy-tx-rise-tune-percent:
129          minimum: 97
130          maximum: 103
131
132  - if:
133      properties:
134        compatible:
135          contains:
136            enum:
137              - fsl,imx95-usb-phy
138    then:
139      properties:
140        fsl,phy-tx-vref-tune-percent:
141          maximum: 108
142        fsl,phy-comp-dis-tune-percent:
143          minimum: 94
144          maximum: 104
145
146  - if:
147      required:
148        - orientation-switch
149    then:
150      allOf:
151        - $ref: /schemas/usb/usb-switch.yaml#
152        - $ref: /schemas/usb/usb-switch-ports.yaml#
153
154unevaluatedProperties: false
155
156examples:
157  - |
158    #include <dt-bindings/clock/imx8mq-clock.h>
159    usb3_phy0: phy@381f0040 {
160        compatible = "fsl,imx8mq-usb-phy";
161        reg = <0x381f0040 0x40>;
162        clocks = <&clk IMX8MQ_CLK_USB1_PHY_ROOT>;
163        clock-names = "phy";
164        #phy-cells = <0>;
165    };