1 // SPDX-License-Identifier: GPL-2.0+
2 // Copyright (c) 2020 Facebook Inc.
3
4 /dts-v1/;
5
6 #include "ast2600-facebook-netbmc-common.dtsi"
7
8 / {
9 model = "Facebook Elbert BMC";
10 compatible = "facebook,elbert-bmc", "aspeed,ast2600";
11
12 aliases {
13 serial0 = &uart5;
14 serial1 = &uart1;
15 serial2 = &uart2;
16 serial3 = &uart3;
17
18 /*
19 * 8 child channels of PCA9548 2-0075.
20 */
21 i2c16 = &imux16;
22 i2c17 = &imux17;
23 i2c18 = &imux18;
24 i2c19 = &imux19;
25 i2c20 = &imux20;
26 i2c21 = &imux21;
27 i2c22 = &imux22;
28 i2c23 = &imux23;
29
30 /*
31 * 8 child channels of PCA9548 5-0075.
32 */
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 };
42
43 chosen {
44 stdout-path = &uart5;
45 };
46
47 spi_gpio: spi {
48 num-chipselects = <1>;
49 cs-gpios = <&gpio0 ASPEED_GPIO(X, 0) GPIO_ACTIVE_LOW>;
50 };
51 };
52
53 &lpc_ctrl {
54 status = "okay";
55 };
56
57 &kcs2 {
58 status = "okay";
59 aspeed,lpc-io-reg = <0xca8>;
60 };
61
62 &kcs3 {
63 status = "okay";
64 aspeed,lpc-io-reg = <0xca2>;
65 };
66
67 &i2c2 {
68 i2c-mux@75 {
69 compatible = "nxp,pca9548";
70 #address-cells = <1>;
71 #size-cells = <0>;
72 reg = <0x75>;
73 i2c-mux-idle-disconnect;
74
75 imux16: i2c@0 {
76 #address-cells = <1>;
77 #size-cells = <0>;
78 reg = <0>;
79 };
80
81 imux17: i2c@1 {
82 #address-cells = <1>;
83 #size-cells = <0>;
84 reg = <1>;
85 };
86
87 imux18: i2c@2 {
88 #address-cells = <1>;
89 #size-cells = <0>;
90 reg = <2>;
91 };
92
93 imux19: i2c@3 {
94 #address-cells = <1>;
95 #size-cells = <0>;
96 reg = <3>;
97 };
98
99 imux20: i2c@4 {
100 #address-cells = <1>;
101 #size-cells = <0>;
102 reg = <4>;
103 };
104
105 imux21: i2c@5 {
106 #address-cells = <1>;
107 #size-cells = <0>;
108 reg = <5>;
109 };
110
111 imux22: i2c@6 {
112 #address-cells = <1>;
113 #size-cells = <0>;
114 reg = <6>;
115 };
116
117 imux23: i2c@7 {
118 #address-cells = <1>;
119 #size-cells = <0>;
120 reg = <7>;
121 };
122 };
123 };
124
125 &i2c5 {
126 i2c-mux@75 {
127 compatible = "nxp,pca9548";
128 #address-cells = <1>;
129 #size-cells = <0>;
130 reg = <0x75>;
131 i2c-mux-idle-disconnect;
132
133 imux24: i2c@0 {
134 #address-cells = <1>;
135 #size-cells = <0>;
136 reg = <0>;
137 };
138
139 imux25: i2c@1 {
140 #address-cells = <1>;
141 #size-cells = <0>;
142 reg = <1>;
143 };
144
145 imux26: i2c@2 {
146 #address-cells = <1>;
147 #size-cells = <0>;
148 reg = <2>;
149 };
150
151 imux27: i2c@3 {
152 #address-cells = <1>;
153 #size-cells = <0>;
154 reg = <3>;
155 };
156
157 imux28: i2c@4 {
158 #address-cells = <1>;
159 #size-cells = <0>;
160 reg = <4>;
161 };
162
163 imux29: i2c@5 {
164 #address-cells = <1>;
165 #size-cells = <0>;
166 reg = <5>;
167 };
168
169 imux30: i2c@6 {
170 #address-cells = <1>;
171 #size-cells = <0>;
172 reg = <6>;
173 };
174
175 imux31: i2c@7 {
176 #address-cells = <1>;
177 #size-cells = <0>;
178 reg = <7>;
179 };
180 };
181 };
182
183 &i2c11 {
184 status = "okay";
185 };
186
187 /*
188 * BMC's "mac3" controller is connected to BCM53134P's IMP_RGMII port
189 * directly (fixed link, no PHY in between).
190 * Note: BMC's "mdio0" controller is connected to BCM53134P's MDIO
191 * interface, and the MDIO channel will be enabled in dts later, when
192 * BCM53134 is added to "bcm53xx" DSA driver.
193 */
194 &mac3 {
195 status = "okay";
196 phy-mode = "rgmii";
197 pinctrl-names = "default";
198 pinctrl-0 = <&pinctrl_rgmii4_default>;
199 fixed-link {
200 speed = <1000>;
201 full-duplex;
202 };
203 };
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