1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Copyright 2022 DimOnOff
4 */
5
6 /dts-v1/;
7
8 #include <dt-bindings/usb/pd.h>
9 #include "imx8mn-var-som-symphony.dts"
10
11 / {
12 model = "DimOnOff Gateway EVK board";
13 compatible = "dimonoff,gateway-evk", "variscite,var-som-mx8mn",
14 "fsl,imx8mn";
15
16 /*
17 * U30 FPF2193 regulator.
18 * Source = BASE_PER_3V3 = SOM_3V3 (COM pin 49).
19 */
20 reg_disp_3v3: regulator-disp-3v3 {
21 compatible = "regulator-fixed";
22 regulator-name = "Display 3V3";
23 regulator-min-microvolt = <3300000>;
24 regulator-max-microvolt = <3300000>;
25 regulator-always-on;
26 regulator-boot-on;
27 };
28
29 gpio-keys {
30 compatible = "gpio-keys";
31 pinctrl-names = "default";
32 pinctrl-0 = <&pinctrl_gpio_keys>;
33
34 key-enter {
35 label = "enter";
36 gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
37 linux,code = <KEY_ENTER>;
38 wakeup-source;
39 };
40 };
41
42 /* Bourns PEC12R rotary encoder, 24 steps. */
43 rotary: rotary-encoder {
44 compatible = "rotary-encoder";
45 pinctrl-names = "default";
46 pinctrl-0 = <&pinctrl_rotary>;
47 gpios = <&gpio5 12 GPIO_ACTIVE_LOW>, /* A */
48 <&gpio5 13 GPIO_ACTIVE_LOW>; /* B */
49 linux,axis = <0>; /* REL_X */
50 rotary-encoder,encoding = "gray";
51 rotary-encoder,relative-axis;
52 };
53 };
54
55 /* Disable Asynchronous Sample Rate Converter (audio) */
56 &easrc {
57 status = "disabled";
58 };
59
60 &ecspi1 {
61 /* Resistive touch controller */
62 /delete-node/ touchscreen@0;
63 };
64
65 &gpu {
66 status = "disabled";
67 };
68
69 &i2c2 {
70 adc@48 {
71 compatible = "ti,ads7924";
72 reg = <0x48>;
73 pinctrl-names = "default";
74 pinctrl-0 = <&pinctrl_adc>;
75 vref-supply = <®_disp_3v3>;
76 reset-gpios = <&gpio5 5 GPIO_ACTIVE_LOW>;
77 #address-cells = <1>;
78 #size-cells = <0>;
79
80 channel@0 {
81 reg = <0>;
82 label = "Pot0";
83 };
84 channel@1 {
85 reg = <1>;
86 label = "Pot1";
87 };
88 channel@2 {
89 reg = <2>;
90 label = "Pot2";
91 };
92 channel@3 {
93 reg = <3>;
94 label = "Pot3";
95 };
96 };
97
98 rtc@51 {
99 compatible = "nxp,pcf2129";
100 reg = <0x51>;
101 reset-source; /* For watchdog. */
102 };
103
104 rtc@53 {
105 compatible = "nxp,pcf2131";
106 reg = <0x53>;
107 pinctrl-names = "default";
108 pinctrl-0 = <&pinctrl_rtc>;
109 reset-source; /* For watchdog. */
110 interrupt-parent = <&gpio5>;
111 interrupts = <10 IRQ_TYPE_EDGE_FALLING>; /* J17.6 on EVK */
112 };
113 };
114
115 &i2c3 {
116 touchscreen@38 {
117 status = "disabled";
118 };
119
120 codec@1a {
121 status = "disabled";
122 };
123
124 /* DS1337 RTC module */
125 rtc@68 {
126 status = "disabled";
127 };
128 };
129
130 &sai5 {
131 status = "disabled";
132 };
133
134 &iomuxc {
135 pinctrl_gpio_keys: gpiokeysgrp {
136 fsl,pins = <
137 MX8MN_IOMUXC_GPIO1_IO08_GPIO1_IO8 0xc6
138 >;
139 };
140
141 pinctrl_rotary: rotarygrp {
142 fsl,pins = <
143 MX8MN_IOMUXC_ECSPI2_MISO_GPIO5_IO12 0x00000156
144 MX8MN_IOMUXC_ECSPI2_SS0_GPIO5_IO13 0x00000156
145 >;
146 };
147
148 pinctrl_adc: adcgrp {
149 fsl,pins = <
150 MX8MN_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5 0x00000156
151 >;
152 };
153
154 pinctrl_rtc: rtcgrp {
155 fsl,pins = <
156 MX8MN_IOMUXC_ECSPI2_SCLK_GPIO5_IO10 0x00000156
157 MX8MN_IOMUXC_ECSPI2_MOSI_GPIO5_IO11 0x00000156
158 >;
159 };
160 };
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