1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/qcom,usb-snps-femto-v2.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Synopsys Femto High-Speed USB PHY V2
maintainers:
- Wesley Cheng <quic_wcheng@quicinc.com>
description: |
Qualcomm High-Speed USB PHY
properties:
compatible:
oneOf:
- items:
- enum:
- qcom,sa8775p-usb-hs-phy
- qcom,sc8280xp-usb-hs-phy
- const: qcom,usb-snps-hs-5nm-phy
- items:
- enum:
- qcom,qcs8300-usb-hs-phy
- qcom,qdu1000-usb-hs-phy
- qcom,sc7280-usb-hs-phy
- qcom,sc8180x-usb-hs-phy
- qcom,sdx55-usb-hs-phy
- qcom,sdx65-usb-hs-phy
- qcom,sm6375-usb-hs-phy
- qcom,sm8150-usb-hs-phy
- qcom,sm8250-usb-hs-phy
- qcom,sm8350-usb-hs-phy
- qcom,sm8450-usb-hs-phy
- const: qcom,usb-snps-hs-7nm-phy
reg:
maxItems: 1
"#phy-cells":
const: 0
clocks:
items:
- description: rpmhcc ref clock
clock-names:
items:
- const: ref
resets:
items:
- description: PHY core reset
vdda-pll-supply:
description: phandle to the regulator VDD supply node.
vdda18-supply:
description: phandle to the regulator 1.8V supply node.
vdda33-supply:
description: phandle to the regulator 3.3V supply node.
qcom,hs-disconnect-bp:
description:
This adjusts the voltage level for the threshold used to
detect a disconnect event at the host.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -272
maximum: 2156
qcom,squelch-detector-bp:
description:
This adjusts the voltage level for the threshold used to
detect valid high-speed data.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -2090
maximum: 1590
qcom,hs-amplitude-bp:
description:
This adjusts the high-speed DC level voltage.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -660
maximum: 2670
qcom,pre-emphasis-duration-bp:
description:
This signal controls the duration for which the
HS pre-emphasis current is sourced onto DP<#> or DM<#>.
The HS Transmitter pre-emphasis duration is defined in terms of
unit amounts. One unit of pre-emphasis duration is approximately
650 ps and is defined as 1X pre-emphasis duration.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: 10000
maximum: 20000
qcom,pre-emphasis-amplitude-bp:
description:
This signal controls the amount of current sourced to
DP<#> and DM<#> after a J-to-K or K-to-J transition.
The HS Transmitter pre-emphasis current is defined in terms of unit
amounts. One unit amount is approximately 2 mA and is defined as
1X pre-emphasis current.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: 10000
maximum: 40000
qcom,hs-rise-fall-time-bp:
description:
This adjusts the rise/fall times of the high-speed waveform.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -4100
maximum: 5430
qcom,hs-crossover-voltage-microvolt:
description:
This adjusts the voltage at which the DP<#> and DM<#>
signals cross while transmitting in HS mode.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -31000
maximum: 28000
qcom,hs-output-impedance-micro-ohms:
description:
In some applications, there can be significant series resistance
on the D+ and D- paths between the transceiver and cable. This adjusts
the driver source impedance to compensate for added series
resistance on the USB. The hardware accepts only discrete values. The
value closest to the provided input will be chosen as the override value
for this param.
minimum: -2300000
maximum: 6100000
qcom,ls-fs-output-impedance-bp:
description:
This adjusts the low- and full-speed single-ended source
impedance while driving high. The following adjustment values are based
on nominal process, voltage, and temperature.
The hardware accepts only discrete values. The value closest to the
provided input will be chosen as the override value for this param.
minimum: -1053
maximum: 1310
required:
- compatible
- reg
- "#phy-cells"
- clocks
- clock-names
- resets
- vdda-pll-supply
- vdda18-supply
- vdda33-supply
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/qcom,rpmh.h>
#include <dt-bindings/clock/qcom,gcc-sm8150.h>
phy@88e2000 {
compatible = "qcom,sm8150-usb-hs-phy", "qcom,usb-snps-hs-7nm-phy";
reg = <0x088e2000 0x400>;
#phy-cells = <0>;
clocks = <&rpmhcc RPMH_CXO_CLK>;
clock-names = "ref";
resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
vdda-pll-supply = <&vdd_usb_hs_core>;
vdda33-supply = <&vdda_usb_hs_3p1>;
vdda18-supply = <&vdda_usb_hs_1p8>;
};
...
|
