1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/net/motorcomm,yt8xxx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: MotorComm yt8xxx Ethernet PHY
8
9 maintainers:
10 - Frank Sae <frank.sae@motor-comm.com>
11
12 allOf:
13 - $ref: ethernet-phy.yaml#
14
15 properties:
16 compatible:
17 enum:
18 - ethernet-phy-id4f51.e91a
19 - ethernet-phy-id4f51.e91b
20
21 rx-internal-delay-ps:
22 description: |
23 RGMII RX Clock Delay used only when PHY operates in RGMII mode with
24 internal delay (phy-mode is 'rgmii-id' or 'rgmii-rxid') in pico-seconds.
25 enum: [ 0, 150, 300, 450, 600, 750, 900, 1050, 1200, 1350, 1500, 1650,
26 1800, 1900, 1950, 2050, 2100, 2200, 2250, 2350, 2500, 2650, 2800,
27 2950, 3100, 3250, 3400, 3550, 3700, 3850, 4000, 4150 ]
28 default: 1950
29
30 tx-internal-delay-ps:
31 description: |
32 RGMII TX Clock Delay used only when PHY operates in RGMII mode with
33 internal delay (phy-mode is 'rgmii-id' or 'rgmii-txid') in pico-seconds.
34 enum: [ 0, 150, 300, 450, 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800,
35 1950, 2100, 2250 ]
36 default: 1950
37
38 motorcomm,clk-out-frequency-hz:
39 description: clock output on clock output pin.
40 enum: [0, 25000000, 125000000]
41 default: 0
42
43 motorcomm,keep-pll-enabled:
44 description: |
45 If set, keep the PLL enabled even if there is no link. Useful if you
46 want to use the clock output without an ethernet link.
47 type: boolean
48
49 motorcomm,auto-sleep-disabled:
50 description: |
51 If set, PHY will not enter sleep mode and close AFE after unplug cable
52 for a timer.
53 type: boolean
54
55 motorcomm,rx-clk-drv-microamp:
56 description: |
57 drive strength of rx_clk rgmii pad.
58 The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can
59 be configured with hardware pull-up resistors to match the SOC voltage
60 (usually 1.8V).
61 The software can read the registers to obtain the LDO voltage and configure
62 the legal drive strength(curren).
63 =====================================================
64 | voltage | current Available (uA) |
65 | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 |
66 | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 |
67 =====================================================
68 enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970,
69 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ]
70 default: 2910
71
72 motorcomm,rx-data-drv-microamp:
73 description: |
74 drive strength of rx_data/rx_ctl rgmii pad.
75 The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can
76 be configured with hardware pull-up resistors to match the SOC voltage
77 (usually 1.8V).
78 The software can read the registers to obtain the LDO voltage and configure
79 the legal drive strength(curren).
80 =====================================================
81 | voltage | current Available (uA) |
82 | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 |
83 | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 |
84 =====================================================
85 enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970,
86 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ]
87 default: 2910
88
89 motorcomm,tx-clk-adj-enabled:
90 description: |
91 This configuration is mainly to adapt to VF2 with JH7110 SoC.
92 Useful if you want to use tx-clk-xxxx-inverted to adj the delay of tx clk.
93 type: boolean
94
95 motorcomm,tx-clk-10-inverted:
96 description: |
97 Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
98 Transmit PHY Clock delay train configuration when speed is 10Mbps.
99 type: boolean
100
101 motorcomm,tx-clk-100-inverted:
102 description: |
103 Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
104 Transmit PHY Clock delay train configuration when speed is 100Mbps.
105 type: boolean
106
107 motorcomm,tx-clk-1000-inverted:
108 description: |
109 Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
110 Transmit PHY Clock delay train configuration when speed is 1000Mbps.
111 type: boolean
112
113 unevaluatedProperties: false
114
115 examples:
116 - |
117 mdio {
118 #address-cells = <1>;
119 #size-cells = <0>;
120 phy-mode = "rgmii-id";
121 ethernet-phy@4 {
122 /* Only needed to make DT lint tools work. Do not copy/paste
123 * into real DTS files.
124 */
125 compatible = "ethernet-phy-id4f51.e91a";
126
127 reg = <4>;
128 rx-internal-delay-ps = <2100>;
129 tx-internal-delay-ps = <150>;
130 motorcomm,clk-out-frequency-hz = <0>;
131 motorcomm,keep-pll-enabled;
132 motorcomm,auto-sleep-disabled;
133 };
134 };
135 - |
136 mdio {
137 #address-cells = <1>;
138 #size-cells = <0>;
139 phy-mode = "rgmii";
140 ethernet-phy@5 {
141 /* Only needed to make DT lint tools work. Do not copy/paste
142 * into real DTS files.
143 */
144 compatible = "ethernet-phy-id4f51.e91a";
145
146 reg = <5>;
147 motorcomm,clk-out-frequency-hz = <125000000>;
148 motorcomm,keep-pll-enabled;
149 motorcomm,auto-sleep-disabled;
150 };
151 };
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