tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 };