1/*
  2 * Copyright 2015 Free Electrons
  3 * Copyright 2015 NextThing Co
  4 *
  5 * Maxime Ripard <maxime.ripard@free-electrons.com>
  6 *
  7 * This file is dual-licensed: you can use it either under the terms
  8 * of the GPL or the X11 license, at your option. Note that this dual
  9 * licensing only applies to this file, and not this project as a
 10 * whole.
 11 *
 12 *  a) This file is free software; you can redistribute it and/or
 13 *     modify it under the terms of the GNU General Public License as
 14 *     published by the Free Software Foundation; either version 2 of the
 15 *     License, or (at your option) any later version.
 16 *
 17 *     This file is distributed in the hope that it will be useful,
 18 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 19 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 20 *     GNU General Public License for more details.
 21 *
 22 * Or, alternatively,
 23 *
 24 *  b) Permission is hereby granted, free of charge, to any person
 25 *     obtaining a copy of this software and associated documentation
 26 *     files (the "Software"), to deal in the Software without
 27 *     restriction, including without limitation the rights to use,
 28 *     copy, modify, merge, publish, distribute, sublicense, and/or
 29 *     sell copies of the Software, and to permit persons to whom the
 30 *     Software is furnished to do so, subject to the following
 31 *     conditions:
 32 *
 33 *     The above copyright notice and this permission notice shall be
 34 *     included in all copies or substantial portions of the Software.
 35 *
 36 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 37 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 38 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 39 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 40 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 41 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 42 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 43 *     OTHER DEALINGS IN THE SOFTWARE.
 44 */
 45
 46/dts-v1/;
 47#include "sun5i-r8.dtsi"
 48#include "sunxi-common-regulators.dtsi"
 49
 50#include <dt-bindings/gpio/gpio.h>
 51#include <dt-bindings/interrupt-controller/irq.h>
 52
 53/ {
 54	model = "NextThing C.H.I.P.";
 55	compatible = "nextthing,chip", "allwinner,sun5i-r8", "allwinner,sun5i-a13";
 56
 57	aliases {
 58		i2c0 = &i2c0;
 59		i2c1 = &i2c1;
 60		i2c2 = &i2c2;
 61		serial0 = &uart1;
 62		serial1 = &uart3;
 63		spi0 = &spi2;
 64	};
 65
 66	chosen {
 67		stdout-path = "serial0:115200n8";
 68	};
 69
 70	leds {
 71		compatible = "gpio-leds";
 72
 73		status {
 74			label = "chip:white:status";
 75			gpios = <&axp_gpio 2 GPIO_ACTIVE_HIGH>;
 76			default-state = "on";
 77		};
 78	};
 79
 80	mmc0_pwrseq: mmc0_pwrseq {
 81		compatible = "mmc-pwrseq-simple";
 82		pinctrl-names = "default";
 83		pinctrl-0 = <&chip_wifi_reg_on_pin>;
 84		reset-gpios = <&pio 2 19 GPIO_ACTIVE_LOW>; /* PC19 */
 85	};
 86
 87	onewire {
 88		compatible = "w1-gpio";
 89		gpios = <&pio 3 2 GPIO_ACTIVE_HIGH>; /* PD2 */
 90		pinctrl-names = "default";
 91		pinctrl-0 = <&chip_w1_pin>;
 92	};
 93};
 94
 95&be0 {
 96	status = "okay";
 97};
 98
 99&codec {
100	status = "okay";
101};
102
103&cpu0 {
104	cpu-supply = <&reg_dcdc2>;
105};
106
107&ehci0 {
108	status = "okay";
109};
110
111&i2c0 {
112	pinctrl-names = "default";
113	pinctrl-0 = <&i2c0_pins_a>;
114	status = "okay";
115
116	axp209: pmic@34 {
117		reg = <0x34>;
118
119		/*
120		 * The interrupt is routed through the "External Fast
121		 * Interrupt Request" pin (ball G13 of the module)
122		 * directly to the main interrupt controller, without
123		 * any other controller interfering.
124		 */
125		interrupts = <0>;
126	};
127};
128
129#include "axp209.dtsi"
130
131&ac_power_supply {
132	status = "okay";
133};
134
135&battery_power_supply {
136	status = "okay";
137};
138
139&i2c1 {
140	pinctrl-names = "default";
141	pinctrl-0 = <&i2c1_pins_a>;
142	status = "disabled";
143};
144
145&i2c2 {
146	pinctrl-names = "default";
147	pinctrl-0 = <&i2c2_pins_a>;
148	status = "okay";
149
150	xio: gpio@38 {
151		compatible = "nxp,pcf8574a";
152		reg = <0x38>;
153
154		gpio-controller;
155		#gpio-cells = <2>;
156
157		interrupt-parent = <&pio>;
158		interrupts = <6 0 IRQ_TYPE_EDGE_FALLING>;
159		interrupt-controller;
160		#interrupt-cells = <2>;
161	};
162};
163
164&mmc0_pins_a {
165	bias-pull-up;
166};
167
168&mmc0 {
169	pinctrl-names = "default";
170	pinctrl-0 = <&mmc0_pins_a>;
171	vmmc-supply = <&reg_vcc3v3>;
172	mmc-pwrseq = <&mmc0_pwrseq>;
173	bus-width = <4>;
174	non-removable;
175	status = "okay";
176};
177
178&ohci0 {
179	status = "okay";
180};
181
182&otg_sram {
183	status = "okay";
184};
185
186&pio {
187	chip_vbus_pin: chip_vbus_pin@0 {
188		pins = "PB10";
189		function = "gpio_out";
190	};
191
192	chip_wifi_reg_on_pin: chip_wifi_reg_on_pin@0 {
193	        pins = "PC19";
194	        function = "gpio_out";
195	};
196
197	chip_id_det_pin: chip_id_det_pin@0 {
198		pins = "PG2";
199		function = "gpio_in";
200	};
201
202	chip_w1_pin: chip_w1_pin@0 {
203		pins = "PD2";
204		function = "gpio_in";
205	        bias-pull-up;
206	};
207};
208
209&reg_dcdc2 {
210	regulator-min-microvolt = <1000000>;
211	regulator-max-microvolt = <1400000>;
212	regulator-name = "cpuvdd";
213	regulator-always-on;
214};
215
216&reg_dcdc3 {
217	regulator-min-microvolt = <1000000>;
218	regulator-max-microvolt = <1300000>;
219	regulator-name = "corevdd";
220	regulator-always-on;
221};
222
223&reg_ldo1 {
224	regulator-name = "rtcvdd";
225};
226
227&reg_ldo2 {
228	regulator-min-microvolt = <2700000>;
229	regulator-max-microvolt = <3300000>;
230	regulator-name = "avcc";
231	regulator-always-on;
232};
233
234/*
235 * Both LDO3 and LDO4 are used in parallel to power up the WiFi/BT
236 * Chip.
237 *
238 * If those are not enabled, the SDIO part will not enumerate, and
239 * since there's no way currently to pass DT infos to an SDIO device,
240 * we cannot really do better than this ugly hack for now.
241 */
242&reg_ldo3 {
243	regulator-min-microvolt = <3300000>;
244	regulator-max-microvolt = <3300000>;
245	regulator-name = "vcc-wifi-1";
246	regulator-always-on;
247};
248
249&reg_ldo4 {
250	regulator-min-microvolt = <3300000>;
251	regulator-max-microvolt = <3300000>;
252	regulator-name = "vcc-wifi-2";
253	regulator-always-on;
254};
255
256&reg_ldo5 {
257	regulator-min-microvolt = <1800000>;
258	regulator-max-microvolt = <1800000>;
259	regulator-name = "vcc-1v8";
260};
261
262&reg_usb0_vbus {
263	pinctrl-0 = <&chip_vbus_pin>;
264	vin-supply = <&reg_vcc5v0>;
265	gpio = <&pio 1 10 GPIO_ACTIVE_HIGH>; /* PB10 */
266	status = "okay";
267};
268
269&spi2 {
270	pinctrl-names = "default";
271	pinctrl-0 = <&spi2_pins_a>;
272	status = "disabled";
273};
274
275&tcon0 {
276	status = "okay";
277};
278
279&tve0 {
280	status = "okay";
281};
282
283&uart1 {
284	pinctrl-names = "default";
285	pinctrl-0 = <&uart1_pins_b>;
286	status = "okay";
287};
288
289&uart3 {
290	pinctrl-names = "default";
291	pinctrl-0 = <&uart3_pins_a>,
292		    <&uart3_cts_rts_pins_a>;
293	status = "okay";
294};
295
296&usb_otg {
297	dr_mode = "otg";
298	status = "okay";
299};
300
301&usb_power_supply {
302	status = "okay";
303};
304
305&usbphy {
306	pinctrl-names = "default";
307	pinctrl-0 = <&chip_id_det_pin>;
308	status = "okay";
309
310	usb0_id_det-gpio = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */
311	usb0_vbus_power-supply = <&usb_power_supply>;
312	usb0_vbus-supply = <&reg_usb0_vbus>;
313	usb1_vbus-supply = <&reg_vcc5v0>;
314};