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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (C) 2025 Lukas Schmid <lukas.schmid@netcube.li>
*/
/dts-v1/;
#include "sun8i-t113s.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
model = "NetCube Systems Nagami SoM";
compatible = "netcube,nagami", "allwinner,sun8i-t113s";
aliases {
serial1 = &uart1; // ESP32 Bootloader UART
serial3 = &uart3; // Console UART on Card Edge
ethernet0 = &emac;
};
chosen {
stdout-path = "serial3:115200n8";
};
/* module wide 3.3V supply directly from the card edge */
reg_vcc3v3: regulator-3v3 {
compatible = "regulator-fixed";
regulator-name = "vcc-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
/* SY8008 DC/DC regulator on the board, also supplying VDD-SYS */
reg_vcc_core: regulator-core {
compatible = "regulator-fixed";
regulator-name = "vcc-core";
regulator-min-microvolt = <880000>;
regulator-max-microvolt = <880000>;
vin-supply = <®_vcc3v3>;
};
/* USB0 MUX to switch connect to Card-Edge only after BootROM */
usb0_sec_mux: mux-controller {
compatible = "gpio-mux";
#mux-control-cells = <0>;
mux-gpios = <&pio 3 9 GPIO_ACTIVE_HIGH>; /* PD9 */
idle-state = <1>; /* USB connected to Card-Edge by default */
};
/* Reset of ESP32 */
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&pio 6 9 GPIO_ACTIVE_LOW>; /* PG9 */
post-power-on-delay-ms = <1500>;
power-off-delay-us = <200>;
};
};
&cpu0 {
cpu-supply = <®_vcc_core>;
};
&cpu1 {
cpu-supply = <®_vcc_core>;
};
&dcxo {
clock-frequency = <24000000>;
};
&emac {
nvmem-cells = <ð0_macaddress>;
nvmem-cell-names = "mac-address";
phy-handle = <&lan8720a>;
phy-mode = "rmii";
pinctrl-0 = <&rmii_pe_pins>;
pinctrl-names = "default";
status = "okay";
};
/* Default I2C Interface on Card-Edge */
&i2c2 {
pinctrl-0 = <&i2c2_pd_pins>;
pinctrl-names = "default";
status = "disabled";
};
/* Exposed as the QWIIC connector and used by the internal EEPROM */
&i2c3 {
pinctrl-0 = <&i2c3_pg_pins>;
pinctrl-names = "default";
status = "okay";
eeprom0: eeprom@50 {
compatible = "atmel,24c02"; /* actually it's a 24AA02E48 */
reg = <0x50>;
pagesize = <16>;
read-only;
vcc-supply = <®_vcc3v3>;
#address-cells = <1>;
#size-cells = <1>;
eth0_macaddress: macaddress@fa {
reg = <0xfa 0x06>;
};
};
};
/* Default I2S Interface on Card-Edge */
&i2s1 {
pinctrl-0 = <&i2s1_pins>, <&i2s1_din0_pin>, <&i2s1_dout0_pin>;
pinctrl-names = "default";
status = "disabled";
};
/* Phy is on SoM. MDI signals pre-magnetics are on the card edge */
&mdio {
lan8720a: ethernet-phy@0 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0>;
};
};
/* Default SD Interface on Card-Edge */
&mmc0 {
pinctrl-0 = <&mmc0_pins>;
pinctrl-names = "default";
status = "disabled";
};
/* Connected to the on-board ESP32 */
&mmc1 {
pinctrl-0 = <&mmc1_pins>;
pinctrl-names = "default";
vmmc-supply = <®_vcc3v3>;
bus-width = <4>;
non-removable;
mmc-pwrseq = <&wifi_pwrseq>;
status = "okay";
};
/* Connected to the on-board eMMC */
&mmc2 {
pinctrl-0 = <&mmc2_pins>;
pinctrl-names = "default";
vmmc-supply = <®_vcc3v3>;
vqmmc-supply = <®_vcc3v3>;
bus-width = <4>;
non-removable;
status = "okay";
};
&pio {
vcc-pb-supply = <®_vcc3v3>;
vcc-pc-supply = <®_vcc3v3>;
vcc-pd-supply = <®_vcc3v3>;
vcc-pe-supply = <®_vcc3v3>;
vcc-pf-supply = <®_vcc3v3>;
vcc-pg-supply = <®_vcc3v3>;
gpio-line-names = "", "", "", "", // PA
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "CAN0_TX", "CAN0_RX", // PB
"CAN1_TX", "CAN1_RX", "UART3_TX", "UART3_RX",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "eMMC_CLK", "eMMC_CMD", // PC
"eMMC_D2", "eMMC_D1", "eMMC_D0", "eMMC_D3",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "", // PD
"", "", "", "",
"", "USB_SEC_EN", "SPI1_CS", "SPI1_CLK",
"SPI1_MOSI", "SPI1_MISO", "SPI1_HOLD", "SPI1_WP",
"PD16", "", "", "",
"I2C2_SCL", "I2C2_SDA", "PD22", "",
"", "", "", "",
"", "", "", "",
"ETH_CRSDV", "ETH_RXD0", "ETH_RXD1", "ETH_TXCK", // PE
"ETH_TXD0", "ETH_TXD1", "ETH_TXEN", "",
"ETH_MDC", "ETH_MDIO", "QWIIC_nINT", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"SD_D1", "SD_D0", "SD_CLK", "SD_CLK", // PF
"SD_D3", "SD_D2", "PF6", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"ESP_CLK", "ESP_CMD", "ESP_D0", "ESP_D1", // PG
"ESP_D2", "ESP_D3", "UART1_TXD", "UART1_RXD",
"ESP_nBOOT", "ESP_nRST", "I2C3_SCL", "I2C3_SDA",
"I2S1_WS", "I2S1_CLK", "I2S1_DIN0", "I2S1_DOUT0",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "";
};
/* Remove the unused CK pin from the pinctl as it is unconnected */
&rmii_pe_pins {
pins = "PE0", "PE1", "PE2", "PE3", "PE4",
"PE5", "PE6", "PE8", "PE9";
};
/* Default SPI Interface on Card-Edge */
&spi1 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-0 = <&spi1_pins>, <&spi1_hold_pin>, <&spi1_wp_pin>;
pinctrl-names = "default";
cs-gpios = <0>;
status = "disabled";
};
/* Connected to the Bootloader/Console of the ESP32 */
&uart1 {
pinctrl-0 = <&uart1_pg6_pins>;
pinctrl-names = "default";
status = "okay";
};
/* Console/Debug UART on Card-Edge */
&uart3 {
pinctrl-0 = <&uart3_pb_pins>;
pinctrl-names = "default";
status = "okay";
};
|
