arch/arm/boot/dts/ste-ux500-samsung-skomer.dts

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Devicetree for the Samsung XCover 2 GT-S7710 also known as Skomer.
   4  */
   5
   6 /dts-v1/;
   7 #include "ste-db8500.dtsi"
   8 #include "ste-ab8505.dtsi"
   9 #include "ste-dbx5x0-pinctrl.dtsi"
  10 #include <dt-bindings/gpio/gpio.h>
  11 #include <dt-bindings/input/input.h>
  12 #include <dt-bindings/interrupt-controller/irq.h>
  13
  14 / {
  15         model = "Samsung XCover 2 (GT-S7710)";
  16         compatible = "samsung,skomer", "st-ericsson,u8500";
  17
  18         chosen {
  19                 stdout-path = &serial2;
  20         };
  21
  22         /* TI TXS0206 level translator for 2.9 V */
  23         sd_level_translator: regulator-gpio {
  24                 compatible = "regulator-fixed";
  25
  26                 /* GPIO87 EN */
  27                 gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>;
  28                 enable-active-high;
  29
  30                 regulator-name = "sd-level-translator";
  31                 regulator-min-microvolt = <2900000>;
  32                 regulator-max-microvolt = <2900000>;
  33                 regulator-type = "voltage";
  34
  35                 startup-delay-us = <200>;
  36
  37                 pinctrl-names = "default";
  38                 pinctrl-0 = <&sd_level_translator_default>;
  39         };
  40
  41         /* External LDO MIC5366-3.3YMT for eMMC */
  42         ldo_3v3_reg: regulator-gpio-ldo-3v3 {
  43                 compatible = "regulator-fixed";
  44                 regulator-name = "en-3v3-fixed-supply";
  45                 regulator-min-microvolt = <3300000>;
  46                 regulator-max-microvolt = <3300000>;
  47                 gpio = <&gpio6 31 GPIO_ACTIVE_HIGH>;
  48                 startup-delay-us = <5000>;
  49                 enable-active-high;
  50                 pinctrl-names = "default";
  51                 pinctrl-0 = <&emmc_ldo_en_default_mode>;
  52         };
  53
  54         wlan_en: regulator-gpio-wlan-en {
  55                 compatible = "regulator-fixed";
  56                 regulator-name = "wl-reg-on";
  57                 regulator-min-microvolt = <3000000>;
  58                 regulator-max-microvolt = <3000000>;
  59                 startup-delay-us = <200000>;
  60                 /* GPIO215 WLAN_EN */
  61                 gpio = <&gpio6 23 GPIO_ACTIVE_HIGH>;
  62                 enable-active-high;
  63                 pinctrl-names = "default";
  64                 pinctrl-0 = <&wlan_en_default_mode>;
  65         };
  66
  67         vibrator {
  68                 compatible = "gpio-vibrator";
  69                 enable-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>;
  70                 pinctrl-names = "default";
  71                 pinctrl-0 = <&vibrator_default>;
  72         };
  73
  74         gpio-keys {
  75                 compatible = "gpio-keys";
  76                 pinctrl-names = "default";
  77                 pinctrl-0 = <&gpio_keys_default_mode>;
  78
  79                 button-home {
  80                         linux,code = <KEY_HOME>;
  81                         label = "HOME";
  82                         /* GPIO91 */
  83                         gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
  84                 };
  85                 button-volup {
  86                         linux,code = <KEY_VOLUMEUP>;
  87                         label = "VOL+";
  88                         /* GPIO67 */
  89                         gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
  90                 };
  91                 button-voldown {
  92                         linux,code = <KEY_VOLUMEDOWN>;
  93                         label = "VOL-";
  94                         /* GPIO92 */
  95                         gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
  96                 };
  97                 button-menu {
  98                         linux,code = <KEY_MENU>;
  99                         label = "MENU";
 100                         /* GPIO204 */
 101                         gpios = <&gpio6 12 GPIO_ACTIVE_LOW>;
 102                 };
 103                 button-back {
 104                         linux,code = <KEY_BACK>;
 105                         label = "BACK";
 106                         /* GPIO205 */
 107                         gpios = <&gpio6 13 GPIO_ACTIVE_LOW>;
 108                 };
 109         };
 110
 111         ktd253: backlight {
 112                 compatible = "kinetic,ktd253";
 113                 /* GPIO 69 */
 114                 enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
 115                 /* Default to 13/32 brightness */
 116                 default-brightness = <13>;
 117                 pinctrl-names = "default";
 118                 pinctrl-0 = <&gpio_backlight_default_mode>;
 119         };
 120
 121         i2c-gpio-0 {
 122                 compatible = "i2c-gpio";
 123                 sda-gpios = <&gpio4 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 124                 scl-gpios = <&gpio4 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 125                 pinctrl-names = "default";
 126                 pinctrl-0 = <&i2c_gpio_0_default>;
 127                 #address-cells = <1>;
 128                 #size-cells = <0>;
 129                 /* TODO: this should be used by the NCP6914 Camera power management unit */
 130         };
 131
 132         i2c-gpio-1 {
 133                 compatible = "i2c-gpio";
 134                 sda-gpios = <&gpio4 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 135                 scl-gpios = <&gpio4 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 136                 pinctrl-names = "default";
 137                 pinctrl-0 = <&i2c_gpio_1_default>;
 138                 #address-cells = <1>;
 139                 #size-cells = <0>;
 140                 magnetometer@c {
 141                         compatible = "alps,hscdtd008a";
 142                         reg = <0x0c>;
 143                         avdd-supply = <&ab8500_ldo_aux1_reg>;
 144                         dvdd-supply = <&ab8500_ldo_aux8_reg>;
 145                 };
 146         };
 147
 148         soc {
 149                 // External Micro SD slot
 150                 sdi0_per1@80126000 {
 151                         arm,primecell-periphid = <0x10480180>;
 152                         max-frequency = <100000000>;
 153                         bus-width = <4>;
 154                         cap-sd-highspeed;
 155                         cap-mmc-highspeed;
 156                         /* All direction control is used */
 157                         st,sig-dir-cmd;
 158                         st,sig-dir-dat0;
 159                         st,sig-dir-dat2;
 160                         st,sig-dir-dat31;
 161                         st,sig-pin-fbclk;
 162                         full-pwr-cycle;
 163                         vmmc-supply = <&ab8500_ldo_aux3_reg>;
 164                         vqmmc-supply = <&sd_level_translator>;
 165                         pinctrl-names = "default", "sleep";
 166                         pinctrl-0 = <&mc0_a_1_default>;
 167                         pinctrl-1 = <&mc0_a_1_sleep>;
 168                         status = "okay";
 169                 };
 170
 171                 // WLAN SDIO channel
 172                 sdi1_per2@80118000 {
 173                         arm,primecell-periphid = <0x10480180>;
 174                         max-frequency = <50000000>;
 175                         bus-width = <4>;
 176                         non-removable;
 177                         cap-sd-highspeed;
 178                         vmmc-supply = <&wlan_en>;
 179                         pinctrl-names = "default", "sleep";
 180                         pinctrl-0 = <&mc1_a_2_default>;
 181                         pinctrl-1 = <&mc1_a_2_sleep>;
 182                         status = "okay";
 183                         #address-cells = <1>;
 184                         #size-cells = <0>;
 185
 186                         wifi@1 {
 187                                 compatible = "brcm,bcm4329-fmac";
 188                                 reg = <1>;
 189                                 /* GPIO216 WL_HOST_WAKE */
 190                                 interrupt-parent = <&gpio6>;
 191                                 interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
 192                                 interrupt-names = "host-wake";
 193                                 pinctrl-names = "default";
 194                                 pinctrl-0 = <&wlan_default_mode>;
 195                         };
 196                 };
 197
 198                 // eMMC
 199                 sdi2_per3@80005000 {
 200                         arm,primecell-periphid = <0x10480180>;
 201                         max-frequency = <100000000>;
 202                         bus-width = <8>;
 203                         non-removable;
 204                         cap-mmc-highspeed;
 205                         mmc-ddr-1_8v;
 206                         vmmc-supply = <&ldo_3v3_reg>;
 207                         pinctrl-names = "default", "sleep";
 208                         pinctrl-0 = <&mc2_a_1_default>;
 209                         pinctrl-1 = <&mc2_a_1_sleep>;
 210
 211                         status = "okay";
 212                 };
 213
 214                 /* GBF (Bluetooth) UART */
 215                 uart@80120000 {
 216                         pinctrl-names = "default", "sleep";
 217                         pinctrl-0 = <&u0_a_1_default>;
 218                         pinctrl-1 = <&u0_a_1_sleep>;
 219                         status = "okay";
 220
 221                         /* FIXME: not quite working yet, probably needs regulators */
 222                         bluetooth {
 223                                 compatible = "brcm,bcm4330-bt";
 224                                 shutdown-gpios = <&gpio6 30 GPIO_ACTIVE_HIGH>;
 225                                 device-wakeup-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
 226                                 host-wakeup-gpios = <&gpio3 1 GPIO_ACTIVE_HIGH>;
 227                                 pinctrl-names = "default";
 228                                 pinctrl-0 = <&bluetooth_default_mode>;
 229                         };
 230                 };
 231
 232                 /* GPF UART */
 233                 uart@80121000 {
 234                         status = "okay";
 235                         pinctrl-names = "default", "sleep";
 236                         pinctrl-0 = <&u1rxtx_a_1_default &u1ctsrts_a_1_default>;
 237                         pinctrl-1 = <&u1rxtx_a_1_sleep &u1ctsrts_a_1_sleep>;
 238                 };
 239
 240                 /* Debugging console UART connected to AB8505 USB */
 241                 uart@80007000 {
 242                         status = "okay";
 243                         pinctrl-names = "default", "sleep";
 244                         pinctrl-0 = <&u2rxtx_c_1_default>;
 245                         pinctrl-1 = <&u2rxtx_c_1_sleep>;
 246                 };
 247
 248                 prcmu@80157000 {
 249                         ab8505 {
 250                                 ab8500_usb {
 251                                         pinctrl-names = "default", "sleep";
 252                                         pinctrl-0 = <&usb_a_1_default>;
 253                                         pinctrl-1 = <&usb_a_1_sleep>;
 254                                 };
 255
 256                                 ab8505-regulators {
 257                                         ab8500_ldo_aux1 {
 258                                                 /* Used for VDD for sensors */
 259                                                 regulator-name = "AUX1";
 260                                                 regulator-min-microvolt = <3000000>;
 261                                                 regulator-max-microvolt = <3300000>;
 262                                         };
 263
 264                                         ab8500_ldo_aux2 {
 265                                                 /* Supplies the Cypress TMA140 touchscreen only with 3.3V */
 266                                                 regulator-name = "AUX2";
 267                                                 regulator-min-microvolt = <3300000>;
 268                                                 regulator-max-microvolt = <3300000>;
 269                                         };
 270
 271                                         ab8500_ldo_aux3 {
 272                                                 /* Used for voltage for external MMC/SD card */
 273                                                 regulator-name = "AUX3";
 274                                                 regulator-min-microvolt = <1100000>;
 275                                                 regulator-max-microvolt = <3300000>;
 276                                         };
 277
 278                                         ab8500_ldo_aux4 {
 279                                                 regulator-name = "AUX4";
 280                                                 /* Hammer to 3.0V for the display */
 281                                                 regulator-min-microvolt = <3000000>;
 282                                                 regulator-max-microvolt = <3000000>;
 283                                         };
 284
 285                                         ab8500_ldo_aux5 {
 286                                                 regulator-name = "AUX5";
 287                                                 regulator-min-microvolt = <1050000>;
 288                                                 regulator-max-microvolt = <2790000>;
 289                                                 regulator-always-on;
 290                                         };
 291
 292                                         ab8500_ldo_aux6 {
 293                                                 regulator-name = "AUX6";
 294                                                 /* Hammer to 1.8V for the display */
 295                                                 regulator-min-microvolt = <1800000>;
 296                                                 regulator-max-microvolt = <1800000>;
 297                                         };
 298
 299                                         ab8500_ldo_aux8 {
 300                                                 /* Mostly VIO for sensors */
 301                                                 regulator-name = "AUX8";
 302                                         };
 303                                 };
 304                         };
 305                 };
 306
 307                 /* I2C0 */
 308                 i2c@80004000 {
 309                         status = "okay";
 310
 311                         pinctrl-names = "default", "sleep";
 312                         pinctrl-0 = <&i2c0_a_1_default>;
 313                         pinctrl-1 = <&i2c0_a_1_sleep>;
 314
 315                         proximity@44 {
 316                                 compatible = "sharp,gp2ap002s00f";
 317                                 clock-frequency = <400000>;
 318                                 reg = <0x44>;
 319
 320                                 interrupt-parent = <&gpio4>;
 321                                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
 322                                 vdd-supply = <&ab8500_ldo_aux1_reg>;
 323                                 vio-supply = <&ab8500_ldo_aux8_reg>;
 324                                 pinctrl-names = "default";
 325                                 pinctrl-0 = <&gp2ap002_skomer_default>;
 326                                 sharp,proximity-far-hysteresis = /bits/ 8 <0x2f>;
 327                                 sharp,proximity-close-hysteresis = /bits/ 8 <0x0f>;
 328                         };
 329                 };
 330
 331
 332                 /* I2C2 */
 333                 i2c@80128000 {
 334                         status = "okay";
 335
 336                         pinctrl-names = "default", "sleep";
 337                         pinctrl-0 = <&i2c2_b_2_default>;
 338                         pinctrl-1 = <&i2c2_b_2_sleep>;
 339
 340                         accel@18 {
 341                                 compatible = "bosch,bma254";
 342                                 clock-frequency = <400000>;
 343                                 reg = <0x18>;
 344
 345                                 /* GPIO224 used as "smart alert" interrupt */
 346                                 interrupt-parent = <&gpio7>;
 347                                 interrupts = <0 IRQ_TYPE_EDGE_RISING>;
 348
 349                                 mount-matrix = "0", "-1", "0",
 350                                               "1", "0", "0",
 351                                                "0", "0", "1";
 352                                 vdd-supply = <&ab8500_ldo_aux1_reg>;
 353                                 vddio-supply = <&ab8500_ldo_aux8_reg>;
 354                                 pinctrl-names = "default";
 355                                 pinctrl-0 = <&bma254_skomer_default>;
 356                         };
 357                 };
 358
 359                 /* I2C3 */
 360                 i2c@80110000 {
 361                         status = "okay";
 362
 363                         pinctrl-names = "default", "sleep";
 364                         pinctrl-0 = <&i2c3_c_2_default>;
 365                         pinctrl-1 = <&i2c3_c_2_sleep>;
 366
 367                         /* Cypress CY8CTMA140 touchscreen */
 368                         touchscreen@20 {
 369                                 compatible = "cypress,cy8ctma140";
 370                                 clock-frequency = <400000>;
 371                                 reg = <0x20>;
 372
 373                                 touchscreen-size-x = <480>;
 374                                 touchscreen-size-y = <800>;
 375                                 touchscreen-max-pressure = <255>;
 376
 377                                 /* GPIO218 for IRQ */
 378                                 interrupt-parent = <&gpio6>;
 379                                 interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
 380
 381                                 /* VDD is "digital supply" nominally 1.71-3.6V */
 382                                 vdd-supply = <&ab8500_ldo_aux2_reg>;
 383                                 /* VCPIN is "analog supply", 2.7-3.6 V */
 384                                 vcpin-supply = <&ab8500_ldo_aux2_reg>;
 385
 386                                 pinctrl-names = "default";
 387                                 pinctrl-0 = <&tma140_skomer_default>;
 388                         };
 389                 };
 390
 391                 mcde@a0350000 {
 392                         status = "okay";
 393                         pinctrl-names = "default";
 394                         pinctrl-0 = <&dsi_default_mode>;
 395
 396                         dsi@a0351000 {
 397                                 panel {
 398                                         /* NT35510-based Hydis HVA40WV1 */
 399                                         compatible = "hydis,hva40wv1", "novatek,nt35510";
 400                                         reg = <0>;
 401                                         /* v_lcd_3v0 2.3-4.8V */
 402                                         vdd-supply = <&ab8500_ldo_aux4_reg>;
 403                                         /* v_lcd_1v8 1.65-3.3V */
 404                                         vddi-supply = <&ab8500_ldo_aux6_reg>;
 405                                         /* GPIO 139 */
 406                                         reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
 407                                         pinctrl-names = "default";
 408                                         pinctrl-0 = <&display_default_mode>;
 409                                         backlight = <&ktd253>;
 410                                 };
 411                         };
 412                 };
 413         };
 414 };
 415
 416 &pinctrl {
 417         /*
 418          * This extends the MC0 default config to include DAT32DIR
 419          * which is used by this machine. If we don't do this the
 420          * SD card does not work.
 421          */
 422         sdi0 {
 423                 mc0_a_1_default {
 424                         default_mux {
 425                                 function = "mc0";
 426                                 /* This machine uses the DAT31 pin */
 427                                 groups = "mc0_a_1", "mc0dat31dir_a_1";
 428                         };
 429                         default_cfg5 {
 430                                 pins = "GPIO21_AB3"; /* DAT31DIR */
 431                                 ste,config = <&out_hi>;
 432                         };
 433                 };
 434         };
 435
 436         /* The unused FBCLK needs to be pulled down on this machine */
 437         sdi2 {
 438                 mc2_a_1_default {
 439                         default_cfg2 {
 440                                 pins = "GPIO130_C8"; /* FBCLK */
 441                                 ste,config = <&in_pd>;
 442                         };
 443                 };
 444         };
 445
 446         mcde {
 447                 dsi_default_mode: dsi_default {
 448                         default_mux1 {
 449                                 /* Mux in VSI0 used for DSI TE */
 450                                 function = "lcd";
 451                                 groups = "lcdvsi0_a_1"; /* VSI0 for LCD */
 452                         };
 453                         default_cfg1 {
 454                                 pins = "GPIO68_E1"; /* VSI0 */
 455                                 ste,config = <&in_nopull>;
 456                         };
 457                 };
 458         };
 459
 460         /* Two GPIO lines used by the display */
 461         display {
 462                 display_default_mode: display_default {
 463                         skomer_cfg1 {
 464                                 /*
 465                                  * OLED DETECT or check_pba, this appears to be high
 466                                  * on "PBA" which I guess is "prototype board A".
 467                                  */
 468                                 pins = "GPIO93_B7";
 469                                 ste,config = <&gpio_in_nopull>;
 470                         };
 471                         skomer_cfg2 {
 472                                 pins = "GPIO139_C9";
 473                                 /*
 474                                  * MIPI_DSI0_RESET_N resets the display, leave high
 475                                  * (de-asserted) so we only assert reset explicitly
 476                                  * from the display driver.
 477                                  */
 478                                 ste,config = <&gpio_out_hi>;
 479                         };
 480                 };
 481         };
 482         backlight {
 483                 gpio_backlight_default_mode: backlight_default {
 484                         skomer_cfg1 {
 485                                 pins = "GPIO69_E2"; /* LCD_BL_CTRL */
 486                                 ste,config = <&gpio_out_lo>;
 487                         };
 488                 };
 489         };
 490         /* GPIO that enables the 2.9V SD card level translator */
 491         sd-level-translator {
 492                 sd_level_translator_default: sd_level_translator_default {
 493                         /* level shifter on GPIO87 */
 494                         skomer_cfg1 {
 495                                 pins = "GPIO87_B3";
 496                                 ste,config = <&gpio_out_hi>;
 497                         };
 498                 };
 499         };
 500         /* GPIO that enables the LDO regulator for the eMMC */
 501         emmc-ldo {
 502                 emmc_ldo_en_default_mode: emmc_ldo_default {
 503                         /* LDO enable on GPIO223 */
 504                         skomer_cfg1 {
 505                                 pins = "GPIO223_AH9";
 506                                 ste,config = <&gpio_out_hi>;
 507                         };
 508                 };
 509         };
 510         /* GPIO keys */
 511         gpio-keys {
 512                 gpio_keys_default_mode: gpio_keys_default {
 513                         skomer_cfg1 {
 514                                 pins = "GPIO67_G2", /* VOL UP */
 515                                        "GPIO91_B6", /* HOME */
 516                                        "GPIO92_D6", /* VOL DOWN */
 517                                        "GPIO204_AF23", /* MENU */
 518                                        "GPIO205_AG23"; /* BACK */
 519                                         ste,config = <&gpio_in_pu>;
 520                         };
 521                 };
 522         };
 523         /* Interrupt line for BMA254 */
 524         bma254 {
 525                 bma254_skomer_default: bma254_skomer {
 526                         skomer_cfg1 {
 527                                 pins = "GPIO224_AG9";
 528                                 ste,config = <&gpio_in_pd>;
 529                         };
 530                 };
 531         };
 532         /* Interrupt line for light/proximity sensor GP2AP002 */
 533         gp2ap002 {
 534                 gp2ap002_skomer_default: gp2ap002_skomer {
 535                         skomer_cfg1 {
 536                                 pins = "GPIO146_D13";
 537                                 ste,config = <&gpio_in_nopull>;
 538                         };
 539                 };
 540         };
 541         /* GPIO-based I2C bus for NCP6914 */
 542         i2c-gpio-0 {
 543                 i2c_gpio_0_default: i2c_gpio_0 {
 544                         skomer_cfg1 {
 545                                 pins = "GPIO143_D12", "GPIO144_B13";
 546                                 ste,config = <&gpio_in_nopull>;
 547                         };
 548                 };
 549         };
 550         /* GPIO-based I2C bus for ALPS HSCD compass */
 551         i2c-gpio-1 {
 552                 i2c_gpio_1_default: i2c_gpio_1 {
 553                         skomer_cfg1 {
 554                                 pins = "GPIO151_B17", "GPIO152_D16";
 555                                 ste,config = <&gpio_in_nopull>;
 556                         };
 557                 };
 558         };
 559         wlan {
 560                 wlan_default_mode: wlan_default {
 561                         skomer_cfg1 {
 562                                 pins = "GPIO216_AG12";
 563                                 ste,config = <&gpio_in_pd>;
 564                         };
 565                 };
 566                 wlan_en_default_mode: wlan_en_default {
 567                         skomer_cfg2 {
 568                                 pins = "GPIO215_AH13";
 569                                 ste,config = <&gpio_out_lo>;
 570                         };
 571                 };
 572         };
 573         bluetooth {
 574                 bluetooth_default_mode: bluetooth_default {
 575                         skomer_cfg1 {
 576                                 pins = "GPIO199_AH23", "GPIO222_AJ9";
 577                                 ste,config = <&gpio_out_lo>;
 578                         };
 579                         skomer_cfg2 {
 580                                 pins = "GPIO97_D9";
 581                                 ste,config = <&gpio_in_nopull>;
 582                         };
 583                 };
 584         };
 585         vibrator {
 586                 vibrator_default: vibrator_default {
 587                         skomer_cfg1 {
 588                                 pins = "GPIO195_AG28";  /* MOT_EN */
 589                                 ste,config = <&gpio_out_lo>;
 590                         };
 591                 };
 592         };
 593         /* Interrupt line for the Cypress TMA140 touchscreen */
 594         touchscreen {
 595                 tma140_skomer_default: tma140_skomer {
 596                         skomer_cfg1 {
 597                                 pins = "GPIO218_AH11";
 598                                 ste,config = <&gpio_in_nopull>;
 599                         };
 600                 };
 601         };
 602 };
 603
 604 &ab8505_gpio {
 605         /* Hog a few default settings */
 606         pinctrl-names = "default";
 607         pinctrl-0 = <&gpio_default>;
 608
 609         gpio {
 610                 gpio_default: gpio_default {
 611                         skomer_mux {
 612                                 /* Change unused pins to GPIO mode */
 613                                 function = "gpio";
 614                                 groups = "gpio3_a_1",   /* default: SysClkReq4 */
 615                                          "gpio14_a_1";  /* default: PWMOut1 */
 616                         };
 617                         skomer_cfg1 {
 618                                 pins = "GPIO11_B17", "GPIO13_D17", "GPIO50_L4";
 619                                 bias-disable;
 620                         };
 621                 };
 622         };
 623 };