arch/arm/boot/dts/aspeed-bmc-facebook-cmm.dts

   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 };