tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Device Tree Source for Kamstrup OMNIA Flex Concentrator.
4 *
5 * Copyright (C) 2020 Kamstrup A/S
6 * Author: Bruno Thomsen <bruno.thomsen@gmail.com>
7 */
8
9/dts-v1/;
10
11#include "imx7d-tqma7.dtsi"
12
13/* One I2C device on TQMa7 SoM is not mounted */
14/delete-node/ &ds1339;
15
16/ {
17 model = "Kamstrup OMNIA Flex Concentrator";
18 compatible = "kam,imx7d-flex-concentrator", "fsl,imx7d";
19
20 memory@80000000 {
21 device_type = "memory";
22 /* 1024 MB - TQMa7D board configuration */
23 reg = <0x80000000 0x40000000>;
24 };
25
26 reg_usb_otg2_vbus: regulator-usb-otg2-vbus {
27 compatible = "regulator-fixed";
28 regulator-name = "VBUS_USBOTG2";
29 regulator-min-microvolt = <5000000>;
30 regulator-max-microvolt = <5000000>;
31 gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>;
32 enable-active-high;
33 };
34
35 reg_vref_1v8: regulator-vref-1v8 {
36 compatible = "regulator-fixed";
37 regulator-name = "VCC1V8_REF";
38 regulator-min-microvolt = <1800000>;
39 regulator-max-microvolt = <1800000>;
40 regulator-always-on;
41 vin-supply = <&sw2_reg>;
42 };
43
44 /*
45 * Human Machine Interface consists of 4 dual red/green LEDs.
46 * hmi-a:green is controlled directly by the switch-mode power supply.
47 * hmi-a:red is not used.
48 */
49 gpio-leds {
50 compatible = "gpio-leds";
51 pinctrl-names = "default";
52 pinctrl-0 = <&pinctrl_leds>;
53
54 led-0 {
55 label = "hmi-b:red:heartbeat-degraded";
56 gpios = <&gpio3 6 GPIO_ACTIVE_HIGH>;
57 };
58
59 led-1 {
60 label = "hmi-b:green:heartbeat-running";
61 gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>;
62 linux,default-trigger = "heartbeat";
63 };
64
65 led-2 {
66 label = "hmi-c:red:mesh-error";
67 gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
68 };
69
70 led-3 {
71 label = "hmi-c:green:mesh-activity";
72 gpios = <&gpio2 30 GPIO_ACTIVE_HIGH>;
73 };
74
75 led-4 {
76 label = "hmi-d:red:omnia-error";
77 gpios = <&gpio2 31 GPIO_ACTIVE_HIGH>;
78 };
79
80 led-5 {
81 label = "hmi-d:green:omnia-activity";
82 gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
83 };
84 };
85
86 /*
87 * Errata e10574 board restart workaround.
88 */
89 gpio-restart {
90 pinctrl-names = "default";
91 pinctrl-0 = <&pinctrl_restart>;
92 compatible = "gpio-restart";
93 gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
94 priority = <200>;
95 };
96};
97
98/*
99 * Analog signals
100 * ADC1_IN0: SMPS - 5V output monitor (voltage divider: 1/0.2806)
101 */
102&adc1 {
103 vref-supply = <®_vref_1v8>;
104 status = "okay";
105};
106
107&ecspi2 {
108 pinctrl-names = "default";
109 pinctrl-0 = <&pinctrl_ecspi2>;
110 num-chipselects = <1>;
111 cs-gpios = <&gpio4 23 GPIO_ACTIVE_LOW>;
112 status = "okay";
113
114 pcf2127: rtc@0 {
115 compatible = "nxp,pcf2127";
116 reg = <0>;
117 spi-max-frequency = <2000000>;
118 };
119};
120
121&ecspi4 {
122 pinctrl-names = "default";
123 pinctrl-0 = <&pinctrl_ecspi4>;
124 num-chipselects = <1>;
125 cs-gpios = <&gpio3 3 GPIO_ACTIVE_LOW>;
126 status = "okay";
127
128 /*
129 * ST chip maximum SPI clock frequency is 33 MHz.
130 *
131 * TCG specification - Section 6.4.1 Clocking:
132 * TPM shall support a SPI clock frequency range of 10-24 MHz.
133 */
134 st33htph: tpm-tis@0 {
135 compatible = "st,st33htpm-spi", "tcg,tpm_tis-spi";
136 reg = <0>;
137 spi-max-frequency = <24000000>;
138 };
139};
140
141&fec1 {
142 pinctrl-names = "default";
143 pinctrl-0 = <&pinctrl_enet1>;
144 phy-mode = "rmii";
145 phy-handle = <ðphy>;
146 status = "okay";
147
148 /*
149 * MDIO bus reset is used to generate PHY device reset before
150 * Ethernet PHY type ID auto-detection. Otherwise this communication
151 * fails as device does not answer when recommended reset circuit
152 * is used.
153 */
154 mdio {
155 #address-cells = <1>;
156 #size-cells = <0>;
157
158 reset-delay-us = <100000>;
159 reset-post-delay-us = <500000>;
160 reset-gpios = <&gpio7 15 GPIO_ACTIVE_LOW>;
161
162 /* Microchip/Micrel KSZ8081RNB */
163 ethphy: ethernet-phy@1 {
164 compatible = "ethernet-phy-ieee802.3-c22";
165 interrupt-parent = <&gpio1>;
166 interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
167 reg = <1>;
168 };
169 };
170};
171
172/*
173 * Detection signals for internal USB modules.
174 * Used for robust USB plug and play handling such as USB downstream port
175 * power-cycle and USB hub reset in case of misbehaving or crashed modules.
176 *
177 * SMPS - AC input monitor based on zero crossing.
178 * Used for last gasp notification.
179 */
180&gpio3 {
181 gpio-line-names = "", "", "", "", "", "", "", "",
182 "", "", "", "", "smps-ac-monitor", "", "usb-hub-reset", "",
183 "", "", "", "", "", "", "", "",
184 "", "module-b-detection", "", "module-a-detection", "", "", "", "";
185};
186
187/*
188 * Tamper IRQ trigger timestamp reading.
189 * Used for sealed cover opened/closed notification.
190 */
191&gpio5 {
192 gpio-line-names = "", "", "", "", "", "", "", "",
193 "", "", "", "", "rtc-tamper-irq", "", "", "",
194 "", "", "", "", "", "", "", "",
195 "", "", "", "", "", "", "", "";
196};
197
198&iomuxc {
199 pinctrl-names = "default";
200 pinctrl-0 = <&pinctrl_misc>;
201
202 pinctrl_ecspi2: ecspi2grp {
203 fsl,pins = <
204 MX7D_PAD_ECSPI2_MISO__ECSPI2_MISO 0x7c /* X2-15 */
205 MX7D_PAD_ECSPI2_MOSI__ECSPI2_MOSI 0x74 /* X2-18 */
206 MX7D_PAD_ECSPI2_SCLK__ECSPI2_SCLK 0x74 /* X2-13 */
207 MX7D_PAD_ECSPI2_SS0__GPIO4_IO23 0x74 /* X2-20 */
208 /* RTC - Tamper IRQ */
209 MX7D_PAD_SD2_CLK__GPIO5_IO12 0x3c /* X1-92 */
210 >;
211 };
212
213 pinctrl_ecspi4: ecspi4grp {
214 fsl,pins = <
215 MX7D_PAD_LCD_CLK__ECSPI4_MISO 0x7c /* X2-72 */
216 MX7D_PAD_LCD_ENABLE__ECSPI4_MOSI 0x74 /* X2-68 */
217 MX7D_PAD_LCD_HSYNC__ECSPI4_SCLK 0x74 /* X2-76 */
218 MX7D_PAD_LCD_VSYNC__GPIO3_IO3 0x74 /* X2-78 */
219 >;
220 };
221
222 pinctrl_enet1: enet1grp {
223 fsl,pins = <
224 MX7D_PAD_GPIO1_IO10__ENET1_MDIO 0x03 /* X2-48 */
225 MX7D_PAD_GPIO1_IO11__ENET1_MDC 0x03 /* X2-46 */
226 MX7D_PAD_ENET1_RGMII_TD0__ENET1_RGMII_TD0 0x71 /* X2-53 */
227 MX7D_PAD_ENET1_RGMII_TD1__ENET1_RGMII_TD1 0x71 /* X2-55 */
228 MX7D_PAD_ENET1_RGMII_TX_CTL__ENET1_RGMII_TX_CTL 0x71 /* X2-61 */
229 MX7D_PAD_ENET1_RGMII_RD0__ENET1_RGMII_RD0 0x79 /* X2-56 */
230 MX7D_PAD_ENET1_RGMII_RD1__ENET1_RGMII_RD1 0x79 /* X2-58 */
231 MX7D_PAD_ENET1_RGMII_RX_CTL__ENET1_RGMII_RX_CTL 0x79 /* X2-64 */
232 MX7D_PAD_ENET1_RGMII_RXC__ENET1_RX_ER 0x73 /* X2-52 */
233 /* PHY reset: SRE_FAST, DSE_X1 */
234 MX7D_PAD_ENET1_COL__GPIO7_IO15 0x00 /* X1-96 */
235 /* Clock from PHY to MAC: 100kPU */
236 MX7D_PAD_GPIO1_IO12__CCM_ENET_REF_CLK1 0x70 /* X3-4 */
237 /* PHY interrupt: 100kPU, HYS */
238 MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x78 /* X1-80 */
239 >;
240 };
241
242 pinctrl_leds: ledsgrp {
243 fsl,pins = <
244 MX7D_PAD_LCD_DATA01__GPIO3_IO6 0x14 /* X2-82 */
245 MX7D_PAD_EPDC_BDR0__GPIO2_IO28 0x14 /* X1-82 */
246 MX7D_PAD_EPDC_BDR1__GPIO2_IO29 0x14 /* X1-84 */
247 MX7D_PAD_EPDC_PWR_COM__GPIO2_IO30 0x14 /* X1-86 */
248 MX7D_PAD_EPDC_PWR_STAT__GPIO2_IO31 0x14 /* X1-88 */
249 MX7D_PAD_UART2_TX_DATA__GPIO4_IO3 0x14 /* X1-90 */
250 >;
251 };
252
253 pinctrl_misc: miscgrp {
254 fsl,pins = <
255 /* Module A detection (low = present) */
256 MX7D_PAD_LCD_DATA22__GPIO3_IO27 0x7c /* X2-105 */
257 /* Module B detection (low = present) */
258 MX7D_PAD_LCD_DATA20__GPIO3_IO25 0x7c /* X2-103 */
259 /* SMPS - AC input monitor (high = failure) */
260 MX7D_PAD_LCD_DATA07__GPIO3_IO12 0x7c /* X2-88 */
261 /* USB - Hub reset */
262 MX7D_PAD_LCD_DATA09__GPIO3_IO14 0x74 /* X2-92 */
263 >;
264 };
265
266 pinctrl_restart: restartgrp {
267 fsl,pins = <
268 MX7D_PAD_ENET1_TX_CLK__GPIO7_IO12 0x74 /* X1-94 */
269 >;
270 };
271
272 pinctrl_uart4: uart4grp {
273 fsl,pins = <
274 MX7D_PAD_SAI2_TX_SYNC__UART4_DCE_RX 0x7e /* X3-14 */
275 MX7D_PAD_SAI2_TX_BCLK__UART4_DCE_TX 0x76 /* X3-16 */
276 >;
277 };
278};
279
280&iomuxc_lpsr {
281 pinctrl_usbotg2: usbotg2grp {
282 fsl,pins = <
283 MX7D_PAD_LPSR_GPIO1_IO06__USB_OTG2_OC 0x5c /* X3-11 */
284 MX7D_PAD_LPSR_GPIO1_IO07__GPIO1_IO7 0x59 /* X3-9 */
285 >;
286 };
287
288};
289
290&uart4 {
291 pinctrl-names = "default";
292 pinctrl-0 = <&pinctrl_uart4>;
293 assigned-clocks = <&clks IMX7D_UART4_ROOT_SRC>;
294 assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>;
295};
296
297&usbotg2 {
298 pinctrl-names = "default";
299 pinctrl-0 = <&pinctrl_usbotg2>;
300 vbus-supply = <®_usb_otg2_vbus>;
301 srp-disable;
302 hnp-disable;
303 adp-disable;
304 over-current-active-low;
305 dr_mode = "host";
306 status = "okay";
307};
308
309/*
310 * External watchdog feature provided by pcf2127.
311 */
312&wdog1 {
313 status = "disabled";
314};