0001 // SPDX-License-Identifier: GPL-2.0+
0002 /dts-v1/;
0003
0004 #include "aspeed-g5.dtsi"
0005 #include <dt-bindings/gpio/aspeed-gpio.h>
0006 #include <dt-bindings/interrupt-controller/irq.h>
0007
0008 / {
0009 model = "Tyan S7106 BMC";
0010 compatible = "tyan,s7106-bmc", "aspeed,ast2500";
0011
0012 chosen {
0013 stdout-path = &uart5;
0014 bootargs = "console=ttyS4,115200 earlycon";
0015 };
0016
0017 memory@80000000 {
0018 device_type = "memory";
0019 reg = <0x80000000 0x20000000>;
0020 };
0021
0022 reserved-memory {
0023 #address-cells = <1>;
0024 #size-cells = <1>;
0025 ranges;
0026
0027 p2a_memory: region@987f0000 {
0028 no-map;
0029 reg = <0x987f0000 0x00010000>; /* 64KB */
0030 };
0031
0032 vga_memory: framebuffer@9f000000 {
0033 no-map;
0034 reg = <0x9f000000 0x01000000>; /* 16M */
0035 };
0036
0037 gfx_memory: framebuffer {
0038 size = <0x01000000>; /* 16M */
0039 alignment = <0x01000000>;
0040 compatible = "shared-dma-pool";
0041 reusable;
0042 };
0043 };
0044
0045 leds {
0046 compatible = "gpio-leds";
0047
0048 identify {
0049 gpios = <&gpio ASPEED_GPIO(A, 2) GPIO_ACTIVE_LOW>;
0050 };
0051
0052 heartbeat {
0053 gpios = <&gpio ASPEED_GPIO(E, 7) GPIO_ACTIVE_LOW>;
0054 };
0055 };
0056
0057 iio-hwmon {
0058 compatible = "iio-hwmon";
0059 io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
0060 <&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>,
0061 <&adc 8>, <&adc 9>, <&adc 10>, <&adc 11>,
0062 <&adc 12>, <&adc 13>, <&adc 14>;
0063 };
0064
0065 iio-hwmon-battery {
0066 compatible = "iio-hwmon";
0067 io-channels = <&adc 15>;
0068 };
0069 };
0070
0071 &fmc {
0072 status = "okay";
0073 flash@0 {
0074 label = "bmc";
0075 status = "okay";
0076 m25p,fast-read;
0077 #include "openbmc-flash-layout.dtsi"
0078 };
0079 };
0080
0081 &spi1 {
0082 status = "okay";
0083 pinctrl-names = "default";
0084 pinctrl-0 = <&pinctrl_spi1_default>;
0085
0086 flash@0 {
0087 status = "okay";
0088 label = "pnor";
0089 m25p,fast-read;
0090 };
0091 };
0092
0093 &uart1 {
0094 /* Rear RS-232 connector */
0095 status = "okay";
0096 pinctrl-names = "default";
0097 pinctrl-0 = <&pinctrl_txd1_default
0098 &pinctrl_rxd1_default>;
0099 };
0100
0101 &uart2 {
0102 /* RS-232 connector on header */
0103 status = "okay";
0104 pinctrl-names = "default";
0105 pinctrl-0 = <&pinctrl_txd2_default
0106 &pinctrl_rxd2_default>;
0107 };
0108
0109 &uart3 {
0110 /* Alternative to vuart to internally connect (route) to uart1
0111 * when vuart cannot be used due to BIOS limitations.
0112 */
0113 status = "okay";
0114 };
0115
0116 &uart4 {
0117 /* Alternative to vuart to internally connect (route) to the
0118 * external port usually used by uart1 when vuart cannot be
0119 * used due to BIOS limitations.
0120 */
0121 status = "okay";
0122 };
0123
0124 &uart5 {
0125 /* BMC "debug" (console) UART; connected to RS-232 connector
0126 * on header; selectable via jumpers as alternative to uart2
0127 */
0128 status = "okay";
0129 };
0130
0131 &uart_routing {
0132 status = "okay";
0133 };
0134
0135 &vuart {
0136 status = "okay";
0137
0138 /* We enable the VUART here, but leave it in a state that does
0139 * not interfere with the SuperIO. The goal is to have both the
0140 * VUART and the SuperIO available and decide at runtime whether
0141 * the VUART should actually be used. For that reason, configure
0142 * an "invalid" IO address and an IRQ that is not used by the
0143 * BMC.
0144 */
0145
0146 aspeed,lpc-io-reg = <0xffff>;
0147 aspeed,lpc-interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
0148 };
0149
0150 &lpc_ctrl {
0151 status = "okay";
0152 };
0153
0154 &p2a {
0155 status = "okay";
0156 memory-region = <&p2a_memory>;
0157 };
0158
0159 &lpc_snoop {
0160 status = "okay";
0161 snoop-ports = <0x80>;
0162 };
0163
0164 &adc {
0165 status = "okay";
0166 };
0167
0168 &vhub {
0169 status = "okay";
0170 };
0171
0172 &pwm_tacho {
0173 status = "okay";
0174 pinctrl-names = "default";
0175 pinctrl-0 = <&pinctrl_pwm0_default
0176 &pinctrl_pwm1_default
0177 &pinctrl_pwm3_default
0178 &pinctrl_pwm4_default>;
0179
0180 /* CPU fan #0 */
0181 fan@0 {
0182 reg = <0x00>;
0183 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
0184 };
0185
0186 /* CPU fan #1 */
0187 fan@1 {
0188 reg = <0x01>;
0189 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
0190 };
0191
0192 /* PWM group for chassis fans #1, #2, #3 and #4 */
0193 fan@2 {
0194 reg = <0x03>;
0195 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
0196 };
0197
0198 fan@3 {
0199 reg = <0x03>;
0200 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
0201 };
0202
0203 fan@4 {
0204 reg = <0x03>;
0205 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
0206 };
0207
0208 fan@5 {
0209 reg = <0x03>;
0210 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
0211 };
0212
0213 /* PWM group for chassis fans #5 and #6 */
0214 fan@6 {
0215 reg = <0x04>;
0216 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
0217 };
0218
0219 fan@7 {
0220 reg = <0x04>;
0221 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
0222 };
0223 };
0224
0225 &i2c0 {
0226 status = "okay";
0227
0228 /* Hardware monitor with temperature sensors */
0229 nct7802@28 {
0230 compatible = "nuvoton,nct7802";
0231 reg = <0x28>;
0232
0233 #address-cells = <1>;
0234 #size-cells = <0>;
0235
0236 channel@0 { /* LTD */
0237 reg = <0>;
0238 };
0239
0240 channel@1 { /* RTD1 */
0241 reg = <1>;
0242 sensor-type = "temperature";
0243 temperature-mode = "thermistor";
0244 };
0245
0246 channel@2 { /* RTD2 */
0247 reg = <2>;
0248 sensor-type = "temperature";
0249 temperature-mode = "thermistor";
0250 };
0251
0252 channel@3 { /* RTD3 */
0253 reg = <3>;
0254 sensor-type = "temperature";
0255 };
0256 };
0257
0258 /* Also connected to:
0259 * - IPMB pin header
0260 * - CPU #0 memory error LED @ 0x3A
0261 * - CPU #1 memory error LED @ 0x3C
0262 */
0263 };
0264
0265 &i2c1 {
0266 /* Directly connected to PCH SMBUS #0 */
0267 status = "okay";
0268 };
0269
0270 &i2c2 {
0271 status = "okay";
0272
0273 /* BMC EEPROM, incl. mainboard FRU */
0274 eeprom@50 {
0275 compatible = "atmel,24c256";
0276 reg = <0x50>;
0277 };
0278
0279 /* Also connected to:
0280 * - fan header
0281 * - mini-SAS HD connector
0282 * - SSATA SGPIO
0283 * - via switch (BMC_SMB3_PCH_IE_SML3_EN, active low)
0284 * to PCH SMBUS #3
0285 */
0286 };
0287
0288 &i2c3 {
0289 status = "okay";
0290
0291 /* PSU1 FRU @ 0xA0 */
0292 eeprom@50 {
0293 compatible = "atmel,24c02";
0294 reg = <0x50>;
0295 };
0296
0297 /* PSU2 FRU @ 0xA2 */
0298 eeprom@51 {
0299 compatible = "atmel,24c02";
0300 reg = <0x51>;
0301 };
0302
0303 /* PSU1 @ 0xB0 */
0304 power-supply@58 {
0305 compatible = "pmbus";
0306 reg = <0x58>;
0307 };
0308
0309 /* PSU2 @ 0xB2 */
0310 power-supply@59 {
0311 compatible = "pmbus";
0312 reg = <0x59>;
0313 };
0314
0315 /* Also connected to:
0316 * - PCH SMBUS #1
0317 */
0318 };
0319
0320 &i2c4 {
0321 status = "okay";
0322
0323 /* Connected to:
0324 * - PCH SMBUS #2
0325 */
0326
0327 /* Connected via switch to:
0328 * - CPU #0 channels ABC VDDQ @ 0x80
0329 * - CPU #0 channels DEF VDDQ @ 0x81
0330 * - CPU #1 channels ABC VDDQ @ 0x82
0331 * - CPU #1 channels DEF VDDQ @ 0x83
0332 * - CPU #0 VCCIO & VMCP @ 0x52
0333 * - CPU #1 VCCIO & VMCP @ 0x53
0334 * - CPU #0 VCCIN @ 0xC0
0335 * - CPU #0 VSA @ 0xC2
0336 * - CPU #1 VCCIN @ 0xC4
0337 * - CPU #1 VSA @ 0xC6
0338 * - J110
0339 */
0340 };
0341
0342 &i2c5 {
0343 status = "okay";
0344
0345 /* Connected via switch (PCH_BMC_SMB_SW_P) to:
0346 * - mainboard FRU @ 0xAE
0347 * - XDP connector
0348 * - ME debug header
0349 * - clock buffer @ 0xD8
0350 * - i2c4 via switch (PCH_VR_SMBUS_SW_P; controlled by PCH)
0351 * - PCH SMBUS
0352 */
0353 };
0354
0355 &i2c6 {
0356 status = "okay";
0357
0358 /* Connected via switch (BMC_PE_SMB_EN_1_N) to
0359 * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
0360 * - 0,0: PCIE slot 1, SMB #1
0361 * - 0,1: PCIE slot 1, SMB #2
0362 * - 1,0: PCIE slot 2, SMB #1
0363 * - 1,1: PCIE slot 2, SMB #2
0364 */
0365
0366 /* Connected via switch (BMC_PE_SMB_EN_2_N) to
0367 * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
0368 * - 0,0: OCP0 (A) SMB
0369 * - 0,1: OCP0 (C) SMB
0370 * - 1,0: OCP1 (A) SMB
0371 * - 1,1: NC
0372 */
0373 };
0374
0375 &i2c7 {
0376 status = "okay";
0377
0378 /* Connected to:
0379 * - PCH SMBUS #4
0380 */
0381 };
0382
0383 &i2c8 {
0384 status = "okay";
0385
0386 /* Not connected */
0387 };
0388
0389 &mac0 {
0390 status = "okay";
0391 use-ncsi;
0392 pinctrl-names = "default";
0393 pinctrl-0 = <&pinctrl_rmii1_default>;
0394 };
0395
0396 &mac1 {
0397 status = "okay";
0398 pinctrl-names = "default";
0399 pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
0400 };
0401
0402 &ibt {
0403 status = "okay";
0404 };
0405
0406 &kcs1 {
0407 status = "okay";
0408 aspeed,lpc-io-reg = <0xca8>;
0409 };
0410
0411 &kcs3 {
0412 status = "okay";
0413 aspeed,lpc-io-reg = <0xca2>;
0414 };
0415
0416 /* Enable BMC VGA output to show an early (pre-BIOS) boot screen */
0417 &gfx {
0418 status = "okay";
0419 memory-region = <&gfx_memory>;
0420 };
0421
0422 /* We're following the GPIO naming as defined at
0423 * https://github.com/openbmc/docs/blob/master/designs/device-tree-gpio-naming.md.
0424 *
0425 * Notes on led-identify and id-button:
0426 * - A physical button is connected to id-button which
0427 * triggers the clock on a D flip-flop. The /Q output of the
0428 * flip-flop drives its D input.
0429 * - The flip-flop's Q output drives led-identify which is
0430 * connected to LEDs.
0431 * - With that, every button press toggles the LED between on and off.
0432 *
0433 * Notes on power-, reset- and nmi- button and control:
0434 * - The -button signals can be used to monitor physical buttons.
0435 * - The -control signals can be used to actuate the specific
0436 * operation.
0437 * - In hardware, the -button signals are connected to the -control
0438 * signals through drivers with the -control signals being
0439 * protected through diodes.
0440 */
0441 &gpio {
0442 status = "okay";
0443 gpio-line-names =
0444 /*A0*/ "",
0445 /*A1*/ "",
0446 /*A2*/ "led-identify", /* in/out: BMC_IDLED_ON_N */
0447 /*A3*/ "",
0448 /*A4*/ "",
0449 /*A5*/ "",
0450 /*A6*/ "",
0451 /*A7*/ "",
0452 /*B0-B7*/ "","","","","","","","",
0453 /*C0*/ "",
0454 /*C1*/ "",
0455 /*C2*/ "",
0456 /*C3*/ "",
0457 /*C4*/ "id-button", /* in/out: BMC_IDBTN_IN_OUT_N */
0458 /*C5*/ "post-complete", /* in: FM_BIOS_POST_CMPLT_N */
0459 /*C6*/ "",
0460 /*C7*/ "",
0461 /*D0*/ "",
0462 /*D1*/ "",
0463 /*D2*/ "power-chassis-good", /* in: SYS_PWROK_BUF */
0464 /*D3*/ "platform-reset", /* in: SYS_PLTRST_N */
0465 /*D4*/ "",
0466 /*D5*/ "",
0467 /*D6*/ "",
0468 /*D7*/ "",
0469 /*E0*/ "power-button", /* in: BMC_PWBTN_IN_N */
0470 /*E1*/ "power-chassis-control", /* out: BMC_PWRBTN_OUT_N */
0471 /*E2*/ "reset-button", /* in: BMC_RSTBTN_IN_N */
0472 /*E3*/ "reset-control", /* out: BMC_RSTBTN_OUT_N */
0473 /*E4*/ "nmi-button", /* in: BMC_NMIBTN_IN_N */
0474 /*E5*/ "nmi-control", /* out: BMC_NMIBTN_OUT_N */
0475 /*E6*/ "",
0476 /*E7*/ "led-heartbeat", /* out: BMC_HEARTBRAT_LED_N */
0477 /*F0*/ "",
0478 /*F1*/ "clear-cmos-control", /* out: BMC_CLR_CMOS_N */
0479 /*F2*/ "",
0480 /*F3*/ "",
0481 /*F4*/ "led-fault", /* out: AST_HW_FAULT_N */
0482 /*F5*/ "",
0483 /*F6*/ "",
0484 /*F7*/ "",
0485 /*G0*/ "BMC_PE_SMB_EN_1_N", /* out */
0486 /*G1*/ "BMC_PE_SMB_EN_2_N", /* out */
0487 /*G2*/ "",
0488 /*G3*/ "",
0489 /*G4*/ "",
0490 /*G5*/ "",
0491 /*G6*/ "",
0492 /*G7*/ "",
0493 /*H0-H7*/ "","","","","","","","",
0494 /*I0-I7*/ "","","","","","","","",
0495 /*J0-J7*/ "","","","","","","","",
0496 /*K0-K7*/ "","","","","","","","",
0497 /*L0-L7*/ "","","","","","","","",
0498 /*M0-M7*/ "","","","","","","","",
0499 /*N0-N7*/ "","","","","","","","",
0500 /*O0-O7*/ "","","","","","","","",
0501 /*P0-P7*/ "","","","","","","","",
0502 /*Q0*/ "",
0503 /*Q1*/ "",
0504 /*Q2*/ "",
0505 /*Q3*/ "",
0506 /*Q4*/ "BMC_PE_SMB_SW_BIT0", /* out */
0507 /*Q5*/ "BMC_PE_SMB_SW_BIT1", /* out */
0508 /*Q6*/ "",
0509 /*Q7*/ "",
0510 /*R0-R7*/ "","","","","","","","",
0511 /*S0-S7*/ "","","","","","","","",
0512 /*T0-T7*/ "","","","","","","","",
0513 /*U0-U7*/ "","","","","","","","",
0514 /*V0-V7*/ "","","","","","","","",
0515 /*W0-W7*/ "","","","","","","","",
0516 /*X0-X7*/ "","","","","","","","",
0517 /*Y0-Y7*/ "","","","","","","","",
0518 /*Z0-Z7*/ "","","","","","","","",
0519 /*AA0*/ "",
0520 /*AA1*/ "",
0521 /*AA2*/ "",
0522 /*AA3*/ "BMC_SMB3_PCH_IE_SML3_EN", /* out */
0523 /*AA4*/ "",
0524 /*AA5*/ "",
0525 /*AA6*/ "",
0526 /*AA7*/ "",
0527 /*AB0-AB7*/ "","","","","","","","";
0528 };
