arch/arm/boot/dts/exynos5250-arndale.dts

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Samsung's Exynos5250 based Arndale board device tree source
   4  *
   5  * Copyright (c) 2013 Samsung Electronics Co., Ltd.
   6  *              http://www.samsung.com
   7  */
   8
   9 /dts-v1/;
  10 #include <dt-bindings/gpio/gpio.h>
  11 #include <dt-bindings/interrupt-controller/irq.h>
  12 #include <dt-bindings/input/input.h>
  13 #include <dt-bindings/clock/samsung,s2mps11.h>
  14 #include <dt-bindings/sound/samsung-i2s.h>
  15 #include "exynos5250.dtsi"
  16
  17 / {
  18         model = "Insignal Arndale evaluation board based on EXYNOS5250";
  19         compatible = "insignal,arndale", "samsung,exynos5250", "samsung,exynos5";
  20
  21         memory@40000000 {
  22                 device_type = "memory";
  23                 reg = <0x40000000 0x80000000>;
  24         };
  25
  26         chosen {
  27                 stdout-path = "serial2:115200n8";
  28         };
  29
  30         gpio_keys {
  31                 compatible = "gpio-keys";
  32
  33                 menu {
  34                         label = "SW-TACT2";
  35                         gpios = <&gpx1 4 GPIO_ACTIVE_LOW>;
  36                         linux,code = <KEY_MENU>;
  37                         wakeup-source;
  38                 };
  39
  40                 home {
  41                         label = "SW-TACT3";
  42                         gpios = <&gpx1 5 GPIO_ACTIVE_LOW>;
  43                         linux,code = <KEY_HOME>;
  44                         wakeup-source;
  45                 };
  46
  47                 up {
  48                         label = "SW-TACT4";
  49                         gpios = <&gpx1 6 GPIO_ACTIVE_LOW>;
  50                         linux,code = <KEY_UP>;
  51                         wakeup-source;
  52                 };
  53
  54                 down {
  55                         label = "SW-TACT5";
  56                         gpios = <&gpx1 7 GPIO_ACTIVE_LOW>;
  57                         linux,code = <KEY_DOWN>;
  58                         wakeup-source;
  59                 };
  60
  61                 back {
  62                         label = "SW-TACT6";
  63                         gpios = <&gpx2 0 GPIO_ACTIVE_LOW>;
  64                         linux,code = <KEY_BACK>;
  65                         wakeup-source;
  66                 };
  67
  68                 wakeup {
  69                         label = "SW-TACT7";
  70                         gpios = <&gpx2 1 GPIO_ACTIVE_LOW>;
  71                         linux,code = <KEY_WAKEUP>;
  72                         wakeup-source;
  73                 };
  74         };
  75
  76         panel: panel {
  77                 compatible = "boe,hv070wsa-100";
  78                 power-supply = <&vcc_3v3_reg>;
  79                 enable-gpios = <&gpd1 3 GPIO_ACTIVE_HIGH>;
  80                 port {
  81                         panel_ep: endpoint {
  82                                 remote-endpoint = <&bridge_out_ep>;
  83                         };
  84                 };
  85         };
  86
  87         regulators {
  88                 compatible = "simple-bus";
  89                 #address-cells = <1>;
  90                 #size-cells = <0>;
  91
  92                 main_dc_reg: regulator@0 {
  93                         compatible = "regulator-fixed";
  94                         reg = <0>;
  95                         regulator-name = "MAIN_DC";
  96                 };
  97
  98                 mmc_reg: regulator@1 {
  99                         compatible = "regulator-fixed";
 100                         reg = <1>;
 101                         regulator-name = "VDD_33ON_2.8V";
 102                         regulator-min-microvolt = <2800000>;
 103                         regulator-max-microvolt = <2800000>;
 104                         gpio = <&gpx1 1 GPIO_ACTIVE_HIGH>;
 105                         enable-active-high;
 106                 };
 107
 108                 reg_hdmi_en: regulator@2 {
 109                         compatible = "regulator-fixed";
 110                         reg = <2>;
 111                         regulator-name = "hdmi-en";
 112                 };
 113
 114                 vcc_1v2_reg: regulator@3 {
 115                         compatible = "regulator-fixed";
 116                         reg = <3>;
 117                         regulator-name = "VCC_1V2";
 118                         regulator-min-microvolt = <1200000>;
 119                         regulator-max-microvolt = <1200000>;
 120                 };
 121
 122                 vcc_1v8_reg: regulator@4 {
 123                         compatible = "regulator-fixed";
 124                         reg = <4>;
 125                         regulator-name = "VCC_1V8";
 126                         regulator-min-microvolt = <1800000>;
 127                         regulator-max-microvolt = <1800000>;
 128                 };
 129
 130                 vcc_3v3_reg: regulator@5 {
 131                         compatible = "regulator-fixed";
 132                         reg = <5>;
 133                         regulator-name = "VCC_3V3";
 134                         regulator-min-microvolt = <3300000>;
 135                         regulator-max-microvolt = <3300000>;
 136                 };
 137         };
 138
 139         sound {
 140                 compatible = "samsung,arndale-wm1811";
 141                 samsung,audio-cpu = <&i2s0>;
 142                 samsung,audio-codec = <&wm1811>;
 143         };
 144
 145         fixed-rate-clocks {
 146                 xxti {
 147                         compatible = "samsung,clock-xxti";
 148                         clock-frequency = <24000000>;
 149                 };
 150         };
 151
 152         // SMSC USB3503 connected in hardware only mode as a PHY
 153         usb_hub: usb-hub {
 154                 compatible = "smsc,usb3503a";
 155
 156                 reset-gpios = <&gpx3 5 GPIO_ACTIVE_LOW>;
 157                 connect-gpios = <&gpd1 7 GPIO_ACTIVE_LOW>;
 158         };
 159 };
 160
 161 &clock {
 162         assigned-clocks = <&clock CLK_FOUT_EPLL>;
 163         assigned-clock-rates = <49152000>;
 164 };
 165
 166 &clock_audss {
 167         assigned-clocks = <&clock_audss EXYNOS_MOUT_AUDSS>;
 168         assigned-clock-parents = <&clock CLK_FOUT_EPLL>;
 169 };
 170
 171 &cpu0 {
 172         cpu0-supply = <&buck2_reg>;
 173 };
 174
 175 &dsi_0 {
 176         vddcore-supply = <&ldo8_reg>;
 177         vddio-supply = <&ldo10_reg>;
 178         samsung,pll-clock-frequency = <24000000>;
 179         samsung,burst-clock-frequency = <320000000>;
 180         samsung,esc-clock-frequency = <10000000>;
 181         status = "okay";
 182
 183         bridge@0 {
 184                 reg = <0>;
 185                 compatible = "toshiba,tc358764";
 186                 vddc-supply = <&vcc_1v2_reg>;
 187                 vddio-supply = <&vcc_1v8_reg>;
 188                 vddlvds-supply = <&vcc_3v3_reg>;
 189                 reset-gpios = <&gpd1 6 GPIO_ACTIVE_LOW>;
 190                 #address-cells = <1>;
 191                 #size-cells = <0>;
 192                 port@1 {
 193                         reg = <1>;
 194                         bridge_out_ep: endpoint {
 195                                 remote-endpoint = <&panel_ep>;
 196                         };
 197                 };
 198         };
 199 };
 200
 201 &fimd {
 202         status = "okay";
 203 };
 204
 205 &hdmi {
 206         pinctrl-names = "default";
 207         pinctrl-0 = <&hdmi_hpd>;
 208         status = "okay";
 209         ddc = <&i2c_ddc>;
 210         hpd-gpios = <&gpx3 7 GPIO_ACTIVE_HIGH>;
 211         vdd_osc-supply = <&ldo10_reg>;
 212         vdd_pll-supply = <&ldo8_reg>;
 213         vdd-supply = <&ldo8_reg>;
 214 };
 215
 216 &i2c_0 {
 217         status = "okay";
 218         samsung,i2c-sda-delay = <100>;
 219         samsung,i2c-max-bus-freq = <20000>;
 220         samsung,i2c-slave-addr = <0x66>;
 221
 222         s5m8767_pmic@66 {
 223                 compatible = "samsung,s5m8767-pmic";
 224                 reg = <0x66>;
 225                 interrupt-parent = <&gpx3>;
 226                 interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
 227                 pinctrl-names = "default";
 228                 pinctrl-0 = <&s5m8767_irq>;
 229
 230                 vinb1-supply = <&main_dc_reg>;
 231                 vinb2-supply = <&main_dc_reg>;
 232                 vinb3-supply = <&main_dc_reg>;
 233                 vinb4-supply = <&main_dc_reg>;
 234                 vinb5-supply = <&main_dc_reg>;
 235                 vinb6-supply = <&main_dc_reg>;
 236                 vinb7-supply = <&main_dc_reg>;
 237                 vinb8-supply = <&main_dc_reg>;
 238                 vinb9-supply = <&main_dc_reg>;
 239
 240                 vinl1-supply = <&buck7_reg>;
 241                 vinl2-supply = <&buck7_reg>;
 242                 vinl3-supply = <&buck7_reg>;
 243                 vinl4-supply = <&main_dc_reg>;
 244                 vinl5-supply = <&main_dc_reg>;
 245                 vinl6-supply = <&main_dc_reg>;
 246                 vinl7-supply = <&main_dc_reg>;
 247                 vinl8-supply = <&buck8_reg>;
 248                 vinl9-supply = <&buck8_reg>;
 249
 250                 s5m8767,pmic-buck2-dvs-voltage = <1300000>;
 251                 s5m8767,pmic-buck3-dvs-voltage = <1100000>;
 252                 s5m8767,pmic-buck4-dvs-voltage = <1200000>;
 253                 s5m8767,pmic-buck-dvs-gpios = <&gpd1 0 GPIO_ACTIVE_HIGH>,
 254                                               <&gpd1 1 GPIO_ACTIVE_HIGH>,
 255                                               <&gpd1 2 GPIO_ACTIVE_HIGH>;
 256                 s5m8767,pmic-buck-ds-gpios = <&gpx2 3 GPIO_ACTIVE_HIGH>,
 257                                              <&gpx2 4 GPIO_ACTIVE_HIGH>,
 258                                              <&gpx2 5 GPIO_ACTIVE_HIGH>;
 259
 260                 s5m8767_osc: clocks {
 261                         compatible = "samsung,s5m8767-clk";
 262                         #clock-cells = <1>;
 263                         clock-output-names = "s5m8767_ap", "unused1", "unused2";
 264                 };
 265
 266                 regulators {
 267                         ldo1_reg: LDO1 {
 268                                 regulator-name = "VDD_ALIVE_1.0V";
 269                                 regulator-min-microvolt = <1100000>;
 270                                 regulator-max-microvolt = <1100000>;
 271                                 regulator-always-on;
 272                                 regulator-boot-on;
 273                                 op_mode = <1>;
 274                         };
 275
 276                         ldo2_reg: LDO2 {
 277                                 regulator-name = "VDD_28IO_DP_1.35V";
 278                                 regulator-min-microvolt = <1200000>;
 279                                 regulator-max-microvolt = <1200000>;
 280                                 regulator-always-on;
 281                                 regulator-boot-on;
 282                                 op_mode = <1>;
 283                         };
 284
 285                         ldo3_reg: LDO3 {
 286                                 regulator-name = "VDD_COMMON1_1.8V";
 287                                 regulator-min-microvolt = <1800000>;
 288                                 regulator-max-microvolt = <1800000>;
 289                                 regulator-always-on;
 290                                 regulator-boot-on;
 291                                 op_mode = <1>;
 292                         };
 293
 294                         ldo4_reg: LDO4 {
 295                                 regulator-name = "VDD_IOPERI_1.8V";
 296                                 regulator-min-microvolt = <1800000>;
 297                                 regulator-max-microvolt = <1800000>;
 298                                 regulator-always-on;
 299                                 op_mode = <1>;
 300                         };
 301
 302                         ldo5_reg: LDO5 {
 303                                 regulator-name = "VDD_EXT_1.8V";
 304                                 regulator-min-microvolt = <1800000>;
 305                                 regulator-max-microvolt = <1800000>;
 306                                 regulator-always-on;
 307                                 regulator-boot-on;
 308                                 op_mode = <1>;
 309                         };
 310
 311                         ldo6_reg: LDO6 {
 312                                 regulator-name = "VDD_MPLL_1.1V";
 313                                 regulator-min-microvolt = <1100000>;
 314                                 regulator-max-microvolt = <1100000>;
 315                                 regulator-always-on;
 316                                 regulator-boot-on;
 317                                 op_mode = <1>;
 318                         };
 319
 320                         ldo7_reg: LDO7 {
 321                                 regulator-name = "VDD_XPLL_1.1V";
 322                                 regulator-min-microvolt = <1100000>;
 323                                 regulator-max-microvolt = <1100000>;
 324                                 regulator-always-on;
 325                                 regulator-boot-on;
 326                                 op_mode = <1>;
 327                         };
 328
 329                         ldo8_reg: LDO8 {
 330                                 regulator-name = "VDD_COMMON2_1.0V";
 331                                 regulator-min-microvolt = <1000000>;
 332                                 regulator-max-microvolt = <1000000>;
 333                                 regulator-always-on;
 334                                 regulator-boot-on;
 335                                 op_mode = <1>;
 336                         };
 337
 338                         ldo9_reg: LDO9 {
 339                                 regulator-name = "VDD_33ON_3.0V";
 340                                 regulator-min-microvolt = <3000000>;
 341                                 regulator-max-microvolt = <3000000>;
 342                                 op_mode = <1>;
 343                         };
 344
 345                         ldo10_reg: LDO10 {
 346                                 regulator-name = "VDD_COMMON3_1.8V";
 347                                 regulator-min-microvolt = <1800000>;
 348                                 regulator-max-microvolt = <1800000>;
 349                                 regulator-always-on;
 350                                 regulator-boot-on;
 351                                 op_mode = <1>;
 352                         };
 353
 354                         ldo11_reg: LDO11 {
 355                                 regulator-name = "VDD_ABB2_1.8V";
 356                                 regulator-min-microvolt = <1800000>;
 357                                 regulator-max-microvolt = <1800000>;
 358                                 regulator-always-on;
 359                                 regulator-boot-on;
 360                                 op_mode = <1>;
 361                         };
 362
 363                         ldo12_reg: LDO12 {
 364                                 regulator-name = "VDD_USB_3.0V";
 365                                 regulator-min-microvolt = <3000000>;
 366                                 regulator-max-microvolt = <3000000>;
 367                                 regulator-always-on;
 368                                 regulator-boot-on;
 369                                 op_mode = <1>;
 370                         };
 371
 372                         ldo13_reg: LDO13 {
 373                                 regulator-name = "VDDQ_C2C_W_1.8V";
 374                                 regulator-min-microvolt = <1800000>;
 375                                 regulator-max-microvolt = <1800000>;
 376                                 regulator-always-on;
 377                                 regulator-boot-on;
 378                                 op_mode = <1>;
 379                         };
 380
 381                         ldo14_reg: LDO14 {
 382                                 regulator-name = "VDD18_ABB0_3_1.8V";
 383                                 regulator-min-microvolt = <1800000>;
 384                                 regulator-max-microvolt = <1800000>;
 385                                 regulator-always-on;
 386                                 regulator-boot-on;
 387                                 op_mode = <1>;
 388                         };
 389
 390                         ldo15_reg: LDO15 {
 391                                 regulator-name = "VDD10_COMMON4_1.0V";
 392                                 regulator-min-microvolt = <1000000>;
 393                                 regulator-max-microvolt = <1000000>;
 394                                 regulator-always-on;
 395                                 regulator-boot-on;
 396                                 op_mode = <1>;
 397                         };
 398
 399                         ldo16_reg: LDO16 {
 400                                 regulator-name = "VDD18_HSIC_1.8V";
 401                                 regulator-min-microvolt = <1800000>;
 402                                 regulator-max-microvolt = <1800000>;
 403                                 regulator-always-on;
 404                                 regulator-boot-on;
 405                                 op_mode = <1>;
 406                         };
 407
 408                         ldo17_reg: LDO17 {
 409                                 regulator-name = "VDDQ_MMC2_3_2.8V";
 410                                 regulator-min-microvolt = <2800000>;
 411                                 regulator-max-microvolt = <2800000>;
 412                                 regulator-always-on;
 413                                 regulator-boot-on;
 414                                 op_mode = <1>;
 415                         };
 416
 417                         ldo18_reg: LDO18 {
 418                                 regulator-name = "VDD_33ON_2.8V";
 419                                 regulator-min-microvolt = <2800000>;
 420                                 regulator-max-microvolt = <2800000>;
 421                                 op_mode = <1>;
 422                         };
 423
 424                         ldo22_reg: LDO22 {
 425                                 regulator-name = "EXT_33_OFF";
 426                                 regulator-min-microvolt = <3300000>;
 427                                 regulator-max-microvolt = <3300000>;
 428                                 op_mode = <1>;
 429                         };
 430
 431                         ldo23_reg: LDO23 {
 432                                 regulator-name = "EXT_28_OFF";
 433                                 regulator-min-microvolt = <2800000>;
 434                                 regulator-max-microvolt = <2800000>;
 435                                 op_mode = <1>;
 436                         };
 437
 438                         ldo25_reg: LDO25 {
 439                                 regulator-name = "PVDD_LDO25";
 440                                 regulator-min-microvolt = <1200000>;
 441                                 regulator-max-microvolt = <1200000>;
 442                                 op_mode = <1>;
 443                         };
 444
 445                         ldo26_reg: LDO26 {
 446                                 regulator-name = "EXT_18_OFF";
 447                                 regulator-min-microvolt = <1800000>;
 448                                 regulator-max-microvolt = <1800000>;
 449                                 op_mode = <1>;
 450                         };
 451
 452                         buck1_reg: BUCK1 {
 453                                 regulator-name = "vdd_mif";
 454                                 regulator-min-microvolt = <950000>;
 455                                 regulator-max-microvolt = <1200000>;
 456                                 regulator-always-on;
 457                                 regulator-boot-on;
 458                                 op_mode = <1>;
 459                         };
 460
 461                         buck2_reg: BUCK2 {
 462                                 regulator-name = "vdd_arm";
 463                                 regulator-min-microvolt = <912500>;
 464                                 regulator-max-microvolt = <1300000>;
 465                                 regulator-always-on;
 466                                 regulator-boot-on;
 467                                 op_mode = <1>;
 468                         };
 469
 470                         buck3_reg: BUCK3 {
 471                                 regulator-name = "vdd_int";
 472                                 regulator-min-microvolt = <900000>;
 473                                 regulator-max-microvolt = <1200000>;
 474                                 regulator-always-on;
 475                                 regulator-boot-on;
 476                                 op_mode = <1>;
 477                         };
 478
 479                         buck4_reg: BUCK4 {
 480                                 regulator-name = "vdd_g3d";
 481                                 regulator-min-microvolt = <850000>;
 482                                 regulator-max-microvolt = <1300000>;
 483                                 regulator-always-on;
 484                                 regulator-boot-on;
 485                                 op_mode = <1>;
 486                         };
 487
 488                         buck5_reg: BUCK5 {
 489                                 regulator-name = "VDD_MEM_1.35V";
 490                                 regulator-min-microvolt = <750000>;
 491                                 regulator-max-microvolt = <1355000>;
 492                                 regulator-always-on;
 493                                 regulator-boot-on;
 494                                 op_mode = <1>;
 495                         };
 496
 497                         buck7_reg: BUCK7 {
 498                                 regulator-name = "PVDD_BUCK7";
 499                                 regulator-always-on;
 500                                 op_mode = <1>;
 501                         };
 502
 503                         buck8_reg: BUCK8 {
 504                                 regulator-name = "PVDD_BUCK8";
 505                                 regulator-always-on;
 506                                 op_mode = <1>;
 507                         };
 508
 509                         buck9_reg: BUCK9 {
 510                                 regulator-name = "VDD_33_OFF_EXT1";
 511                                 regulator-min-microvolt = <750000>;
 512                                 regulator-max-microvolt = <3000000>;
 513                                 op_mode = <1>;
 514                         };
 515                 };
 516         };
 517 };
 518
 519 &i2c_3 {
 520         status = "okay";
 521
 522         wm1811: codec@1a {
 523                 compatible = "wlf,wm1811";
 524                 reg = <0x1a>;
 525                 clocks = <&i2s0 CLK_I2S_CDCLK>;
 526                 clock-names = "MCLK1";
 527
 528                 AVDD2-supply = <&main_dc_reg>;
 529                 CPVDD-supply = <&main_dc_reg>;
 530                 DBVDD1-supply = <&main_dc_reg>;
 531                 DBVDD2-supply = <&main_dc_reg>;
 532                 DBVDD3-supply = <&main_dc_reg>;
 533                 LDO1VDD-supply = <&main_dc_reg>;
 534                 SPKVDD1-supply = <&main_dc_reg>;
 535                 SPKVDD2-supply = <&main_dc_reg>;
 536
 537                 wlf,ldo1ena = <&gpb0 0 GPIO_ACTIVE_HIGH>;
 538                 wlf,ldo2ena = <&gpb0 1 GPIO_ACTIVE_HIGH>;
 539         };
 540 };
 541
 542 &i2c_8 {
 543         status = "okay";
 544         /* used by HDMI PHY */
 545         samsung,i2c-sda-delay = <100>;
 546         samsung,i2c-max-bus-freq = <66000>;
 547 };
 548
 549 &i2c_9 {
 550         status = "okay";
 551         samsung,i2c-sda-delay = <100>;
 552         samsung,i2c-max-bus-freq = <40000>;
 553         samsung,i2c-slave-addr = <0x38>;
 554
 555         sata_phy_i2c:sata-phy@38 {
 556                 compatible = "samsung,exynos-sataphy-i2c";
 557                 reg = <0x38>;
 558         };
 559 };
 560
 561 &i2s0 {
 562         assigned-clocks = <&i2s0 CLK_I2S_RCLK_SRC>;
 563         assigned-clock-parents = <&clock_audss EXYNOS_I2S_BUS>;
 564         status = "okay";
 565 };
 566
 567 &i2s0_bus {
 568         samsung,pin-drv = <EXYNOS4_PIN_DRV_LV2>;
 569 };
 570
 571 &mali {
 572         mali-supply = <&buck4_reg>;
 573         status = "okay";
 574 };
 575
 576 &mixer {
 577         status = "okay";
 578 };
 579
 580 &mmc_0 {
 581         status = "okay";
 582         broken-cd;
 583         card-detect-delay = <200>;
 584         samsung,dw-mshc-ciu-div = <3>;
 585         samsung,dw-mshc-sdr-timing = <2 3>;
 586         samsung,dw-mshc-ddr-timing = <1 2>;
 587         vmmc-supply = <&mmc_reg>;
 588         pinctrl-names = "default";
 589         pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4 &sd0_bus8>;
 590         bus-width = <8>;
 591         cap-mmc-highspeed;
 592 };
 593
 594 &mmc_2 {
 595         status = "okay";
 596         card-detect-delay = <200>;
 597         samsung,dw-mshc-ciu-div = <3>;
 598         samsung,dw-mshc-sdr-timing = <2 3>;
 599         samsung,dw-mshc-ddr-timing = <1 2>;
 600         vmmc-supply = <&mmc_reg>;
 601         pinctrl-names = "default";
 602         pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
 603         bus-width = <4>;
 604         disable-wp;
 605         cap-sd-highspeed;
 606 };
 607
 608 &pinctrl_0 {
 609         s5m8767_irq: s5m8767-irq {
 610                 samsung,pins = "gpx3-2";
 611                 samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
 612         };
 613 };
 614
 615 &rtc {
 616         clocks = <&clock CLK_RTC>, <&s5m8767_osc S2MPS11_CLK_AP>;
 617         clock-names = "rtc", "rtc_src";
 618         status = "okay";
 619 };
 620
 621 &sata {
 622         status = "okay";
 623 };
 624
 625 &sata_phy {
 626         status = "okay";
 627         samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
 628 };
 629
 630 &soc {
 631         /*
 632          * For unknown reasons HDMI-DDC does not work with Exynos I2C
 633          * controllers. Lets use software I2C over GPIO pins as a workaround.
 634          */
 635         i2c_ddc: i2c-gpio {
 636                 pinctrl-names = "default";
 637                 pinctrl-0 = <&i2c2_gpio_bus>;
 638                 status = "okay";
 639                 compatible = "i2c-gpio";
 640                 gpios = <&gpa0 6 0 /* sda */
 641                          &gpa0 7 0 /* scl */
 642                         >;
 643                 i2c-gpio,delay-us = <2>;
 644                 #address-cells = <1>;
 645                 #size-cells = <0>;
 646         };
 647 };