arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /dts-v1/;
   3
   4 #include "aspeed-g5.dtsi"
   5 #include <dt-bindings/gpio/aspeed-gpio.h>
   6 #include <dt-bindings/interrupt-controller/irq.h>
   7
   8 / {
   9         model = "Tyan S7106 BMC";
  10         compatible = "tyan,s7106-bmc", "aspeed,ast2500";
  11
  12         chosen {
  13                 stdout-path = &uart5;
  14                 bootargs = "console=ttyS4,115200 earlycon";
  15         };
  16
  17         memory@80000000 {
  18                 device_type = "memory";
  19                 reg = <0x80000000 0x20000000>;
  20         };
  21
  22         reserved-memory {
  23                 #address-cells = <1>;
  24                 #size-cells = <1>;
  25                 ranges;
  26
  27                 p2a_memory: region@987f0000 {
  28                         no-map;
  29                         reg = <0x987f0000 0x00010000>; /* 64KB */
  30                 };
  31
  32                 vga_memory: framebuffer@9f000000 {
  33                         no-map;
  34                         reg = <0x9f000000 0x01000000>; /* 16M */
  35                 };
  36
  37                 gfx_memory: framebuffer {
  38                         size = <0x01000000>; /* 16M */
  39                         alignment = <0x01000000>;
  40                         compatible = "shared-dma-pool";
  41                         reusable;
  42                 };
  43         };
  44
  45         leds {
  46                 compatible = "gpio-leds";
  47
  48                 identify {
  49                         gpios = <&gpio ASPEED_GPIO(A, 2) GPIO_ACTIVE_LOW>;
  50                 };
  51
  52                 heartbeat {
  53                         gpios = <&gpio ASPEED_GPIO(E, 7) GPIO_ACTIVE_LOW>;
  54                 };
  55         };
  56
  57         iio-hwmon {
  58                 compatible = "iio-hwmon";
  59                 io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
  60                         <&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>,
  61                         <&adc 8>, <&adc 9>, <&adc 10>, <&adc 11>,
  62                         <&adc 12>, <&adc 13>, <&adc 14>;
  63         };
  64
  65         iio-hwmon-battery {
  66                 compatible = "iio-hwmon";
  67                 io-channels = <&adc 15>;
  68         };
  69 };
  70
  71 &fmc {
  72         status = "okay";
  73         flash@0 {
  74                 label = "bmc";
  75                 status = "okay";
  76                 m25p,fast-read;
  77 #include "openbmc-flash-layout.dtsi"
  78         };
  79 };
  80
  81 &spi1 {
  82         status = "okay";
  83         pinctrl-names = "default";
  84         pinctrl-0 = <&pinctrl_spi1_default>;
  85
  86         flash@0 {
  87                 status = "okay";
  88                 label = "pnor";
  89                 m25p,fast-read;
  90         };
  91 };
  92
  93 &uart1 {
  94         /* Rear RS-232 connector */
  95         status = "okay";
  96         pinctrl-names = "default";
  97         pinctrl-0 = <&pinctrl_txd1_default
  98                         &pinctrl_rxd1_default>;
  99 };
 100
 101 &uart2 {
 102         /* RS-232 connector on header */
 103         status = "okay";
 104         pinctrl-names = "default";
 105         pinctrl-0 = <&pinctrl_txd2_default
 106                         &pinctrl_rxd2_default>;
 107 };
 108
 109 &uart3 {
 110         /* Alternative to vuart to internally connect (route) to uart1
 111          * when vuart cannot be used due to BIOS limitations.
 112          */
 113         status = "okay";
 114 };
 115
 116 &uart4 {
 117         /* Alternative to vuart to internally connect (route) to the
 118          * external port usually used by uart1 when vuart cannot be
 119          * used due to BIOS limitations.
 120          */
 121         status = "okay";
 122 };
 123
 124 &uart5 {
 125         /* BMC "debug" (console) UART; connected to RS-232 connector
 126          * on header; selectable via jumpers as alternative to uart2
 127          */
 128         status = "okay";
 129 };
 130
 131 &uart_routing {
 132         status = "okay";
 133 };
 134
 135 &vuart {
 136         status = "okay";
 137
 138         /* We enable the VUART here, but leave it in a state that does
 139          * not interfere with the SuperIO. The goal is to have both the
 140          * VUART and the SuperIO available and decide at runtime whether
 141          * the VUART should actually be used. For that reason, configure
 142          * an "invalid" IO address and an IRQ that is not used by the
 143          * BMC.
 144          */
 145
 146         aspeed,lpc-io-reg = <0xffff>;
 147         aspeed,lpc-interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
 148 };
 149
 150 &lpc_ctrl {
 151         status = "okay";
 152 };
 153
 154 &p2a {
 155         status = "okay";
 156         memory-region = <&p2a_memory>;
 157 };
 158
 159 &lpc_snoop {
 160         status = "okay";
 161         snoop-ports = <0x80>;
 162 };
 163
 164 &adc {
 165         status = "okay";
 166 };
 167
 168 &vhub {
 169         status = "okay";
 170 };
 171
 172 &pwm_tacho {
 173         status = "okay";
 174         pinctrl-names = "default";
 175         pinctrl-0 = <&pinctrl_pwm0_default
 176                         &pinctrl_pwm1_default
 177                         &pinctrl_pwm3_default
 178                         &pinctrl_pwm4_default>;
 179
 180         /* CPU fan #0 */
 181         fan@0 {
 182                 reg = <0x00>;
 183                 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
 184         };
 185
 186         /* CPU fan #1 */
 187         fan@1 {
 188                 reg = <0x01>;
 189                 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
 190         };
 191
 192         /* PWM group for chassis fans #1, #2, #3 and #4  */
 193         fan@2 {
 194                 reg = <0x03>;
 195                 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
 196         };
 197
 198         fan@3 {
 199                 reg = <0x03>;
 200                 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
 201         };
 202
 203         fan@4 {
 204                 reg = <0x03>;
 205                 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
 206         };
 207
 208         fan@5 {
 209                 reg = <0x03>;
 210                 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
 211         };
 212
 213         /* PWM group for chassis fans #5 and #6  */
 214         fan@6 {
 215                 reg = <0x04>;
 216                 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
 217         };
 218
 219         fan@7 {
 220                 reg = <0x04>;
 221                 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
 222         };
 223 };
 224
 225 &i2c0 {
 226         status = "okay";
 227
 228         /* Hardware monitor with temperature sensors */
 229         nct7802@28 {
 230                 compatible = "nuvoton,nct7802";
 231                 reg = <0x28>;
 232
 233                 #address-cells = <1>;
 234                 #size-cells = <0>;
 235
 236                 channel@0 { /* LTD */
 237                         reg = <0>;
 238                 };
 239
 240                 channel@1 { /* RTD1 */
 241                         reg = <1>;
 242                         sensor-type = "temperature";
 243                         temperature-mode = "thermistor";
 244                 };
 245
 246                 channel@2 { /* RTD2 */
 247                         reg = <2>;
 248                         sensor-type = "temperature";
 249                         temperature-mode = "thermistor";
 250                 };
 251
 252                 channel@3 { /* RTD3 */
 253                         reg = <3>;
 254                         sensor-type = "temperature";
 255                 };
 256         };
 257
 258         /* Also connected to:
 259          * - IPMB pin header
 260          * - CPU #0 memory error LED @ 0x3A
 261          * - CPU #1 memory error LED @ 0x3C
 262          */
 263 };
 264
 265 &i2c1 {
 266         /* Directly connected to PCH SMBUS #0 */
 267         status = "okay";
 268 };
 269
 270 &i2c2 {
 271         status = "okay";
 272
 273         /* BMC EEPROM, incl. mainboard FRU */
 274         eeprom@50 {
 275                 compatible = "atmel,24c256";
 276                 reg = <0x50>;
 277         };
 278
 279         /* Also connected to:
 280          * - fan header
 281          * - mini-SAS HD connector
 282          * - SSATA SGPIO
 283          * - via switch (BMC_SMB3_PCH_IE_SML3_EN, active low)
 284          *   to PCH SMBUS #3
 285          */
 286 };
 287
 288 &i2c3 {
 289         status = "okay";
 290
 291         /* PSU1 FRU @ 0xA0 */
 292         eeprom@50 {
 293                 compatible = "atmel,24c02";
 294                 reg = <0x50>;
 295         };
 296
 297         /* PSU2 FRU @ 0xA2 */
 298         eeprom@51 {
 299                 compatible = "atmel,24c02";
 300                 reg = <0x51>;
 301         };
 302
 303         /* PSU1 @ 0xB0 */
 304         power-supply@58 {
 305                 compatible = "pmbus";
 306                 reg = <0x58>;
 307         };
 308
 309         /* PSU2 @ 0xB2 */
 310         power-supply@59 {
 311                 compatible = "pmbus";
 312                 reg = <0x59>;
 313         };
 314
 315         /* Also connected to:
 316          * - PCH SMBUS #1
 317          */
 318 };
 319
 320 &i2c4 {
 321         status = "okay";
 322
 323         /* Connected to:
 324          * - PCH SMBUS #2
 325          */
 326
 327         /* Connected via switch to:
 328          * - CPU #0 channels ABC VDDQ @ 0x80
 329          * - CPU #0 channels DEF VDDQ @ 0x81
 330          * - CPU #1 channels ABC VDDQ @ 0x82
 331          * - CPU #1 channels DEF VDDQ @ 0x83
 332          * - CPU #0 VCCIO & VMCP @ 0x52
 333          * - CPU #1 VCCIO & VMCP @ 0x53
 334          * - CPU #0 VCCIN @ 0xC0
 335          * - CPU #0 VSA @ 0xC2
 336          * - CPU #1 VCCIN @ 0xC4
 337          * - CPU #1 VSA @ 0xC6
 338          * - J110
 339          */
 340 };
 341
 342 &i2c5 {
 343         status = "okay";
 344
 345         /* Connected via switch (PCH_BMC_SMB_SW_P) to:
 346          * - mainboard FRU @ 0xAE
 347          * - XDP connector
 348          * - ME debug header
 349          * - clock buffer @ 0xD8
 350          * - i2c4 via switch (PCH_VR_SMBUS_SW_P; controlled by PCH)
 351          * - PCH SMBUS
 352          */
 353 };
 354
 355 &i2c6 {
 356         status = "okay";
 357
 358         /* Connected via switch (BMC_PE_SMB_EN_1_N) to
 359          * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
 360          * - 0,0: PCIE slot 1, SMB #1
 361          * - 0,1: PCIE slot 1, SMB #2
 362          * - 1,0: PCIE slot 2, SMB #1
 363          * - 1,1: PCIE slot 2, SMB #2
 364          */
 365
 366         /* Connected via switch (BMC_PE_SMB_EN_2_N) to
 367          * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
 368          * - 0,0: OCP0 (A) SMB
 369          * - 0,1: OCP0 (C) SMB
 370          * - 1,0: OCP1 (A) SMB
 371          * - 1,1: NC
 372          */
 373 };
 374
 375 &i2c7 {
 376         status = "okay";
 377
 378         /* Connected to:
 379          * - PCH SMBUS #4
 380          */
 381 };
 382
 383 &i2c8 {
 384         status = "okay";
 385
 386         /* Not connected */
 387 };
 388
 389 &mac0 {
 390         status = "okay";
 391         use-ncsi;
 392         pinctrl-names = "default";
 393         pinctrl-0 = <&pinctrl_rmii1_default>;
 394 };
 395
 396 &mac1 {
 397         status = "okay";
 398         pinctrl-names = "default";
 399         pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
 400 };
 401
 402 &ibt {
 403         status = "okay";
 404 };
 405
 406 &kcs1 {
 407         status = "okay";
 408         aspeed,lpc-io-reg = <0xca8>;
 409 };
 410
 411 &kcs3 {
 412         status = "okay";
 413         aspeed,lpc-io-reg = <0xca2>;
 414 };
 415
 416 /* Enable BMC VGA output to show an early (pre-BIOS) boot screen */
 417 &gfx {
 418         status = "okay";
 419         memory-region = <&gfx_memory>;
 420 };
 421
 422 /* We're following the GPIO naming as defined at
 423  * https://github.com/openbmc/docs/blob/master/designs/device-tree-gpio-naming.md.
 424  *
 425  * Notes on led-identify and id-button:
 426  * - A physical button is connected to id-button which
 427  *   triggers the clock on a D flip-flop. The /Q output of the
 428  *   flip-flop drives its D input.
 429  * - The flip-flop's Q output drives led-identify which is
 430  *   connected to LEDs.
 431  * - With that, every button press toggles the LED between on and off.
 432  *
 433  * Notes on power-, reset- and nmi- button and control:
 434  * - The -button signals can be used to monitor physical buttons.
 435  * - The -control signals can be used to actuate the specific
 436  *   operation.
 437  * - In hardware, the -button signals are connected to the -control
 438  *   signals through drivers with the -control signals being
 439  *   protected through diodes.
 440  */
 441 &gpio {
 442         status = "okay";
 443         gpio-line-names =
 444         /*A0*/          "",
 445         /*A1*/          "",
 446         /*A2*/          "led-identify", /* in/out: BMC_IDLED_ON_N */
 447         /*A3*/          "",
 448         /*A4*/          "",
 449         /*A5*/          "",
 450         /*A6*/          "",
 451         /*A7*/          "",
 452         /*B0-B7*/       "","","","","","","","",
 453         /*C0*/          "",
 454         /*C1*/          "",
 455         /*C2*/          "",
 456         /*C3*/          "",
 457         /*C4*/          "id-button", /* in/out: BMC_IDBTN_IN_OUT_N */
 458         /*C5*/          "post-complete", /* in: FM_BIOS_POST_CMPLT_N */
 459         /*C6*/          "",
 460         /*C7*/          "",
 461         /*D0*/          "",
 462         /*D1*/          "",
 463         /*D2*/          "power-chassis-good", /* in: SYS_PWROK_BUF */
 464         /*D3*/          "platform-reset", /* in: SYS_PLTRST_N */
 465         /*D4*/          "",
 466         /*D5*/          "",
 467         /*D6*/          "",
 468         /*D7*/          "",
 469         /*E0*/          "power-button", /* in: BMC_PWBTN_IN_N */
 470         /*E1*/          "power-chassis-control", /* out: BMC_PWRBTN_OUT_N */
 471         /*E2*/          "reset-button", /* in: BMC_RSTBTN_IN_N */
 472         /*E3*/          "reset-control", /* out: BMC_RSTBTN_OUT_N */
 473         /*E4*/          "nmi-button", /* in: BMC_NMIBTN_IN_N */
 474         /*E5*/          "nmi-control", /* out: BMC_NMIBTN_OUT_N */
 475         /*E6*/          "",
 476         /*E7*/          "led-heartbeat", /* out: BMC_HEARTBRAT_LED_N */
 477         /*F0*/          "",
 478         /*F1*/          "clear-cmos-control", /* out: BMC_CLR_CMOS_N */
 479         /*F2*/          "",
 480         /*F3*/          "",
 481         /*F4*/          "led-fault", /* out: AST_HW_FAULT_N */
 482         /*F5*/          "",
 483         /*F6*/          "",
 484         /*F7*/          "",
 485         /*G0*/          "BMC_PE_SMB_EN_1_N", /* out */
 486         /*G1*/          "BMC_PE_SMB_EN_2_N", /* out */
 487         /*G2*/          "",
 488         /*G3*/          "",
 489         /*G4*/          "",
 490         /*G5*/          "",
 491         /*G6*/          "",
 492         /*G7*/          "",
 493         /*H0-H7*/       "","","","","","","","",
 494         /*I0-I7*/       "","","","","","","","",
 495         /*J0-J7*/       "","","","","","","","",
 496         /*K0-K7*/       "","","","","","","","",
 497         /*L0-L7*/       "","","","","","","","",
 498         /*M0-M7*/       "","","","","","","","",
 499         /*N0-N7*/       "","","","","","","","",
 500         /*O0-O7*/       "","","","","","","","",
 501         /*P0-P7*/       "","","","","","","","",
 502         /*Q0*/          "",
 503         /*Q1*/          "",
 504         /*Q2*/          "",
 505         /*Q3*/          "",
 506         /*Q4*/          "BMC_PE_SMB_SW_BIT0", /* out */
 507         /*Q5*/          "BMC_PE_SMB_SW_BIT1", /* out */
 508         /*Q6*/          "",
 509         /*Q7*/          "",
 510         /*R0-R7*/       "","","","","","","","",
 511         /*S0-S7*/       "","","","","","","","",
 512         /*T0-T7*/       "","","","","","","","",
 513         /*U0-U7*/       "","","","","","","","",
 514         /*V0-V7*/       "","","","","","","","",
 515         /*W0-W7*/       "","","","","","","","",
 516         /*X0-X7*/       "","","","","","","","",
 517         /*Y0-Y7*/       "","","","","","","","",
 518         /*Z0-Z7*/       "","","","","","","","",
 519         /*AA0*/         "",
 520         /*AA1*/         "",
 521         /*AA2*/         "",
 522         /*AA3*/         "BMC_SMB3_PCH_IE_SML3_EN", /* out */
 523         /*AA4*/         "",
 524         /*AA5*/         "",
 525         /*AA6*/         "",
 526         /*AA7*/         "",
 527         /*AB0-AB7*/     "","","","","","","","";
 528 };