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         ast-adc-hwmon {
  61                 compatible = "iio-hwmon";
  62                 io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
  63                               <&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>;
  64         };
  65 };
  66
  67 &pinctrl {
  68         aspeed,external-nodes = <&gfx &lhc>;
  69 };
  70
  71 /*
  72  * Update reset type to "system" (full chip) to fix warm reboot hang issue
  73  * when reset type is set to default ("soc", gated by reset mask registers).
  74  */
  75 &wdt1 {
  76         status = "okay";
  77         aspeed,reset-type = "system";
  78 };
  79
  80 /*
  81  * wdt2 is not used by Backpack CMM.
  82  */
  83 &wdt2 {
  84         status = "disabled";
  85 };
  86
  87 &fmc {
  88         status = "okay";
  89         flash@0 {
  90                 status = "okay";
  91                 m25p,fast-read;
  92                 label = "bmc";
  93 #include "facebook-bmc-flash-layout.dtsi"
  94         };
  95 };
  96
  97 &uart1 {
  98         status = "okay";
  99         pinctrl-names = "default";
 100         pinctrl-0 = <&pinctrl_txd1_default
 101                      &pinctrl_rxd1_default
 102                      &pinctrl_ncts1_default
 103                      &pinctrl_ndcd1_default
 104                      &pinctrl_ndsr1_default
 105                      &pinctrl_ndtr1_default
 106                      &pinctrl_nrts1_default>;
 107 };
 108
 109 &uart3 {
 110         status = "okay";
 111         pinctrl-names = "default";
 112         pinctrl-0 = <&pinctrl_txd3_default
 113                      &pinctrl_rxd3_default
 114                      &pinctrl_ncts3_default
 115                      &pinctrl_ndcd3_default
 116                      &pinctrl_nri3_default>;
 117 };
 118
 119 &uart4 {
 120         status = "okay";
 121         pinctrl-names = "default";
 122         pinctrl-0 = <&pinctrl_txd4_default
 123                      &pinctrl_rxd4_default>;
 124 };
 125
 126 &uart5 {
 127         status = "okay";
 128 };
 129
 130 &mac1 {
 131         status = "okay";
 132         no-hw-checksum;
 133         pinctrl-names = "default";
 134         pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
 135 };
 136
 137 /*
 138  * I2C bus reserved for communication with COM-E.
 139  */
 140 &i2c0 {
 141         status = "okay";
 142 };
 143
 144 /*
 145  * I2C bus to Line Cards and Fabric Cards.
 146  */
 147 &i2c1 {
 148         status = "okay";
 149
 150         i2c-switch@77 {
 151                 compatible = "nxp,pca9548";
 152                 #address-cells = <1>;
 153                 #size-cells = <0>;
 154                 reg = <0x77>;
 155
 156                 imux16: i2c@0 {
 157                         #address-cells = <1>;
 158                         #size-cells = <0>;
 159                         reg = <0>;
 160                 };
 161
 162                 imux17: i2c@1 {
 163                         #address-cells = <1>;
 164                         #size-cells = <0>;
 165                         reg = <1>;
 166                 };
 167
 168                 imux18: i2c@2 {
 169                         #address-cells = <1>;
 170                         #size-cells = <0>;
 171                         reg = <2>;
 172                 };
 173
 174                 imux19: i2c@3 {
 175                         #address-cells = <1>;
 176                         #size-cells = <0>;
 177                         reg = <3>;
 178                 };
 179
 180                 imux20: i2c@4 {
 181                         #address-cells = <1>;
 182                         #size-cells = <0>;
 183                         reg = <4>;
 184                 };
 185
 186                 imux21: i2c@5 {
 187                         #address-cells = <1>;
 188                         #size-cells = <0>;
 189                         reg = <5>;
 190                 };
 191
 192                 imux22: i2c@6 {
 193                         #address-cells = <1>;
 194                         #size-cells = <0>;
 195                         reg = <6>;
 196                 };
 197
 198                 imux23: i2c@7 {
 199                         #address-cells = <1>;
 200                         #size-cells = <0>;
 201                         reg = <7>;
 202                 };
 203         };
 204 };
 205
 206 /*
 207  * I2C bus to Power Distribution Board.
 208  */
 209 &i2c2 {
 210         status = "okay";
 211
 212         i2c-switch@71 {
 213                 compatible = "nxp,pca9548";
 214                 #address-cells = <1>;
 215                 #size-cells = <0>;
 216                 reg = <0x71>;
 217
 218                 imux24: i2c@0 {
 219                         #address-cells = <1>;
 220                         #size-cells = <0>;
 221                         reg = <0>;
 222                 };
 223
 224                 imux25: i2c@1 {
 225                         #address-cells = <1>;
 226                         #size-cells = <0>;
 227                         reg = <1>;
 228                 };
 229
 230                 imux26: i2c@2 {
 231                         #address-cells = <1>;
 232                         #size-cells = <0>;
 233                         reg = <2>;
 234                 };
 235
 236                 imux27: i2c@3 {
 237                         #address-cells = <1>;
 238                         #size-cells = <0>;
 239                         reg = <3>;
 240                 };
 241
 242                 imux28: i2c@4 {
 243                         #address-cells = <1>;
 244                         #size-cells = <0>;
 245                         reg = <4>;
 246                 };
 247
 248                 imux29: i2c@5 {
 249                         #address-cells = <1>;
 250                         #size-cells = <0>;
 251                         reg = <5>;
 252                 };
 253
 254                 imux30: i2c@6 {
 255                         #address-cells = <1>;
 256                         #size-cells = <0>;
 257                         reg = <6>;
 258                 };
 259
 260                 imux31: i2c@7 {
 261                         #address-cells = <1>;
 262                         #size-cells = <0>;
 263                         reg = <7>;
 264                 };
 265         };
 266 };
 267
 268 /*
 269  * I2c bus connected with temperature sensors on CMM.
 270  */
 271 &i2c3 {
 272         status = "okay";
 273 };
 274
 275 /*
 276  * I2C bus reserved for communication with COM-E.
 277  */
 278 &i2c4 {
 279         status = "okay";
 280 };
 281
 282 /*
 283  * I2c bus connected with ADM1278.
 284  */
 285 &i2c5 {
 286         status = "okay";
 287 };
 288
 289 /*
 290  * I2c bus connected with I/O Expander.
 291  */
 292 &i2c6 {
 293         status = "okay";
 294 };
 295
 296 /*
 297  * I2c bus connected with I/O Expander and EPROMs.
 298  */
 299 &i2c7 {
 300         status = "okay";
 301 };
 302
 303 /*
 304  * I2C bus to Fan Control Board.
 305  */
 306 &i2c8 {
 307         status = "okay";
 308
 309         i2c-switch@77 {
 310                 compatible = "nxp,pca9548";
 311                 #address-cells = <1>;
 312                 #size-cells = <0>;
 313                 reg = <0x77>;
 314
 315                 imux32: i2c@0 {
 316                         #address-cells = <1>;
 317                         #size-cells = <0>;
 318                         reg = <0>;
 319                 };
 320
 321                 imux33: i2c@1 {
 322                         #address-cells = <1>;
 323                         #size-cells = <0>;
 324                         reg = <1>;
 325                 };
 326
 327                 imux34: i2c@2 {
 328                         #address-cells = <1>;
 329                         #size-cells = <0>;
 330                         reg = <2>;
 331                 };
 332
 333                 imux35: i2c@3 {
 334                         #address-cells = <1>;
 335                         #size-cells = <0>;
 336                         reg = <3>;
 337                 };
 338
 339                 imux36: i2c@4 {
 340                         #address-cells = <1>;
 341                         #size-cells = <0>;
 342                         reg = <4>;
 343                 };
 344
 345                 imux37: i2c@5 {
 346                         #address-cells = <1>;
 347                         #size-cells = <0>;
 348                         reg = <5>;
 349                 };
 350
 351                 imux38: i2c@6 {
 352                         #address-cells = <1>;
 353                         #size-cells = <0>;
 354                         reg = <6>;
 355                 };
 356
 357                 imux39: i2c@7 {
 358                         #address-cells = <1>;
 359                         #size-cells = <0>;
 360                         reg = <7>;
 361                 };
 362         };
 363 };
 364
 365 /*
 366  * I2C bus to CMM CPLD.
 367  */
 368 &i2c13 {
 369         status = "okay";
 370 };
 371
 372 &adc {
 373         status = "okay";
 374 };