1// SPDX-License-Identifier: GPL-2.0+
2// Copyright (c) 2018 Facebook Inc.
3/dts-v1/;
4
5#include "aspeed-g5.dtsi"
6
7/ {
8	model = "Facebook Backpack CMM BMC";
9	compatible = "facebook,cmm-bmc", "aspeed,ast2500";
10
11	aliases {
12		/*
13		 * Override the default uart aliases to avoid breaking
14		 * the legacy applications.
15		 */
16		serial0 = &uart5;
17		serial1 = &uart1;
18		serial2 = &uart3;
19		serial3 = &uart4;
20
21		/*
22		 * Hardcode the bus number of i2c switches' channels to
23		 * avoid breaking the legacy applications.
24		 */
25		i2c16 = &imux16;
26		i2c17 = &imux17;
27		i2c18 = &imux18;
28		i2c19 = &imux19;
29		i2c20 = &imux20;
30		i2c21 = &imux21;
31		i2c22 = &imux22;
32		i2c23 = &imux23;
33		i2c24 = &imux24;
34		i2c25 = &imux25;
35		i2c26 = &imux26;
36		i2c27 = &imux27;
37		i2c28 = &imux28;
38		i2c29 = &imux29;
39		i2c30 = &imux30;
40		i2c31 = &imux31;
41		i2c32 = &imux32;
42		i2c33 = &imux33;
43		i2c34 = &imux34;
44		i2c35 = &imux35;
45		i2c36 = &imux36;
46		i2c37 = &imux37;
47		i2c38 = &imux38;
48		i2c39 = &imux39;
49	};
50
51	chosen {
52		stdout-path = &uart1;
53		bootargs = "console=ttyS1,9600n8 root=/dev/ram rw earlyprintk";
54	};
55
56	memory@80000000 {
57		reg = <0x80000000 0x20000000>;
58	};
59};
60
61&pinctrl {
62	aspeed,external-nodes = <&gfx &lhc>;
63};
64
65/*
66 * Update reset type to "system" (full chip) to fix warm reboot hang issue
67 * when reset type is set to default ("soc", gated by reset mask registers).
68 */
69&wdt1 {
70	status = "okay";
71	aspeed,reset-type = "system";
72};
73
74/*
75 * wdt2 is not used by Backpack CMM.
76 */
77&wdt2 {
78	status = "disabled";
79};
80
81&fmc {
82	status = "okay";
83	flash@0 {
84		status = "okay";
85		m25p,fast-read;
86		label = "bmc";
87#include "facebook-bmc-flash-layout.dtsi"
88	};
89};
90
91&uart1 {
92	status = "okay";
93	pinctrl-names = "default";
94	pinctrl-0 = <&pinctrl_txd1_default
95		     &pinctrl_rxd1_default
96		     &pinctrl_ncts1_default
97		     &pinctrl_ndcd1_default
98		     &pinctrl_ndsr1_default
99		     &pinctrl_ndtr1_default
100		     &pinctrl_nrts1_default>;
101};
102
103&uart3 {
104	status = "okay";
105	pinctrl-names = "default";
106	pinctrl-0 = <&pinctrl_txd3_default
107		     &pinctrl_rxd3_default
108		     &pinctrl_ncts3_default
109		     &pinctrl_ndcd3_default
110		     &pinctrl_nri3_default>;
111};
112
113&uart4 {
114	status = "okay";
115	pinctrl-names = "default";
116	pinctrl-0 = <&pinctrl_txd4_default
117		     &pinctrl_rxd4_default>;
118};
119
120&uart5 {
121	status = "okay";
122};
123
124&mac1 {
125	status = "okay";
126	no-hw-checksum;
127	pinctrl-names = "default";
128	pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
129};
130
131/*
132 * I2C bus reserved for communication with COM-E.
133 */
134&i2c0 {
135	status = "okay";
136};
137
138/*
139 * I2C bus to Line Cards and Fabric Cards.
140 */
141&i2c1 {
142	status = "okay";
143
144	i2c-switch@77 {
145		compatible = "nxp,pca9548";
146		#address-cells = <1>;
147		#size-cells = <0>;
148		reg = <0x77>;
149
150		imux16: i2c@0 {
151			#address-cells = <1>;
152			#size-cells = <0>;
153			reg = <0>;
154		};
155
156		imux17: i2c@1 {
157			#address-cells = <1>;
158			#size-cells = <0>;
159			reg = <1>;
160		};
161
162		imux18: i2c@2 {
163			#address-cells = <1>;
164			#size-cells = <0>;
165			reg = <2>;
166		};
167
168		imux19: i2c@3 {
169			#address-cells = <1>;
170			#size-cells = <0>;
171			reg = <3>;
172		};
173
174		imux20: i2c@4 {
175			#address-cells = <1>;
176			#size-cells = <0>;
177			reg = <4>;
178		};
179
180		imux21: i2c@5 {
181			#address-cells = <1>;
182			#size-cells = <0>;
183			reg = <5>;
184		};
185
186		imux22: i2c@6 {
187			#address-cells = <1>;
188			#size-cells = <0>;
189			reg = <6>;
190		};
191
192		imux23: i2c@7 {
193			#address-cells = <1>;
194			#size-cells = <0>;
195			reg = <7>;
196		};
197	};
198};
199
200/*
201 * I2C bus to Power Distribution Board.
202 */
203&i2c2 {
204	status = "okay";
205
206	i2c-switch@71 {
207		compatible = "nxp,pca9548";
208		#address-cells = <1>;
209		#size-cells = <0>;
210		reg = <0x71>;
211
212		imux24: i2c@0 {
213			#address-cells = <1>;
214			#size-cells = <0>;
215			reg = <0>;
216		};
217
218		imux25: i2c@1 {
219			#address-cells = <1>;
220			#size-cells = <0>;
221			reg = <1>;
222		};
223
224		imux26: i2c@2 {
225			#address-cells = <1>;
226			#size-cells = <0>;
227			reg = <2>;
228		};
229
230		imux27: i2c@3 {
231			#address-cells = <1>;
232			#size-cells = <0>;
233			reg = <3>;
234		};
235
236		imux28: i2c@4 {
237			#address-cells = <1>;
238			#size-cells = <0>;
239			reg = <4>;
240		};
241
242		imux29: i2c@5 {
243			#address-cells = <1>;
244			#size-cells = <0>;
245			reg = <5>;
246		};
247
248		imux30: i2c@6 {
249			#address-cells = <1>;
250			#size-cells = <0>;
251			reg = <6>;
252		};
253
254		imux31: i2c@7 {
255			#address-cells = <1>;
256			#size-cells = <0>;
257			reg = <7>;
258		};
259	};
260};
261
262/*
263 * I2c bus connected with temperature sensors on CMM.
264 */
265&i2c3 {
266	status = "okay";
267};
268
269/*
270 * I2C bus reserved for communication with COM-E.
271 */
272&i2c4 {
273	status = "okay";
274};
275
276/*
277 * I2c bus connected with ADM1278.
278 */
279&i2c5 {
280	status = "okay";
281};
282
283/*
284 * I2c bus connected with I/O Expander.
285 */
286&i2c6 {
287	status = "okay";
288};
289
290/*
291 * I2c bus connected with I/O Expander and EPROMs.
292 */
293&i2c7 {
294	status = "okay";
295};
296
297/*
298 * I2C bus to Fan Control Board.
299 */
300&i2c8 {
301	status = "okay";
302
303	i2c-switch@77 {
304		compatible = "nxp,pca9548";
305		#address-cells = <1>;
306		#size-cells = <0>;
307		reg = <0x77>;
308
309		imux32: i2c@0 {
310			#address-cells = <1>;
311			#size-cells = <0>;
312			reg = <0>;
313		};
314
315		imux33: i2c@1 {
316			#address-cells = <1>;
317			#size-cells = <0>;
318			reg = <1>;
319		};
320
321		imux34: i2c@2 {
322			#address-cells = <1>;
323			#size-cells = <0>;
324			reg = <2>;
325		};
326
327		imux35: i2c@3 {
328			#address-cells = <1>;
329			#size-cells = <0>;
330			reg = <3>;
331		};
332
333		imux36: i2c@4 {
334			#address-cells = <1>;
335			#size-cells = <0>;
336			reg = <4>;
337		};
338
339		imux37: i2c@5 {
340			#address-cells = <1>;
341			#size-cells = <0>;
342			reg = <5>;
343		};
344
345		imux38: i2c@6 {
346			#address-cells = <1>;
347			#size-cells = <0>;
348			reg = <6>;
349		};
350
351		imux39: i2c@7 {
352			#address-cells = <1>;
353			#size-cells = <0>;
354			reg = <7>;
355		};
356	};
357};
358
359/*
360 * I2C bus to CMM CPLD.
361 */
362&i2c13 {
363	status = "okay";
364};
365
366&adc {
367	status = "okay";
368};
369