Merge tag 'for-linus-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
[linux-2.6-microblaze.git] / 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/leds/common.h>
12 #include <dt-bindings/input/input.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14
15 / {
16         model = "Samsung XCover 2 (GT-S7710)";
17         compatible = "samsung,skomer", "st-ericsson,u8500";
18
19         chosen {
20                 stdout-path = &serial2;
21         };
22
23         /* TI TXS0206 level translator for 2.9 V */
24         sd_level_translator: regulator-gpio {
25                 compatible = "regulator-fixed";
26
27                 /* GPIO87 EN */
28                 gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>;
29                 enable-active-high;
30
31                 regulator-name = "sd-level-translator";
32                 regulator-min-microvolt = <2900000>;
33                 regulator-max-microvolt = <2900000>;
34                 regulator-type = "voltage";
35
36                 startup-delay-us = <200>;
37
38                 pinctrl-names = "default";
39                 pinctrl-0 = <&sd_level_translator_default>;
40         };
41
42         /* External LDO MIC5366-3.3YMT for eMMC */
43         ldo_3v3_reg: regulator-gpio-ldo-3v3 {
44                 compatible = "regulator-fixed";
45                 regulator-name = "en-3v3-fixed-supply";
46                 regulator-min-microvolt = <3300000>;
47                 regulator-max-microvolt = <3300000>;
48                 gpio = <&gpio6 31 GPIO_ACTIVE_HIGH>;
49                 startup-delay-us = <5000>;
50                 enable-active-high;
51                 pinctrl-names = "default";
52                 pinctrl-0 = <&emmc_ldo_en_default_mode>;
53         };
54
55         wlan_en: regulator-gpio-wlan-en {
56                 compatible = "regulator-fixed";
57                 regulator-name = "wl-reg-on";
58                 regulator-min-microvolt = <3000000>;
59                 regulator-max-microvolt = <3000000>;
60                 startup-delay-us = <200000>;
61                 /* GPIO215 WLAN_EN */
62                 gpio = <&gpio6 23 GPIO_ACTIVE_HIGH>;
63                 enable-active-high;
64                 pinctrl-names = "default";
65                 pinctrl-0 = <&wlan_en_default_mode>;
66         };
67
68         vibrator {
69                 compatible = "gpio-vibrator";
70                 enable-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>;
71                 pinctrl-names = "default";
72                 pinctrl-0 = <&vibrator_default>;
73         };
74
75         gpio-keys {
76                 compatible = "gpio-keys";
77                 pinctrl-names = "default";
78                 pinctrl-0 = <&gpio_keys_default_mode>;
79
80                 button-home {
81                         linux,code = <KEY_HOME>;
82                         label = "HOME";
83                         /* GPIO91 */
84                         gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
85                 };
86                 button-volup {
87                         linux,code = <KEY_VOLUMEUP>;
88                         label = "VOL+";
89                         /* GPIO67 */
90                         gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
91                 };
92                 button-voldown {
93                         linux,code = <KEY_VOLUMEDOWN>;
94                         label = "VOL-";
95                         /* GPIO92 */
96                         gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
97                 };
98                 button-menu {
99                         linux,code = <KEY_MENU>;
100                         label = "MENU";
101                         /* GPIO204 */
102                         gpios = <&gpio6 12 GPIO_ACTIVE_LOW>;
103                 };
104                 button-back {
105                         linux,code = <KEY_BACK>;
106                         label = "BACK";
107                         /* GPIO205 */
108                         gpios = <&gpio6 13 GPIO_ACTIVE_LOW>;
109                 };
110         };
111
112         ktd253: backlight {
113                 compatible = "kinetic,ktd253";
114                 /* GPIO 69 */
115                 enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
116                 /* Default to 13/32 brightness */
117                 default-brightness = <13>;
118                 pinctrl-names = "default";
119                 pinctrl-0 = <&gpio_backlight_default_mode>;
120         };
121
122         /* Richtek RT8515GQW Flash LED Driver IC */
123         flash {
124                 compatible = "richtek,rt8515";
125                 /* GPIO 140 */
126                 enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
127                 /* GPIO 141 */
128                 ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
129                 /*
130                  * RFS is 16 kOhm and RTS is 100 kOhm giving
131                  * the flash max current 343mA and torch max
132                  * current 55 mA.
133                  */
134                 richtek,rfs-ohms = <16000>;
135                 richtek,rts-ohms = <100000>;
136                 pinctrl-names = "default";
137                 pinctrl-0 = <&gpio_flash_default_mode>;
138
139                 led {
140                         function = LED_FUNCTION_FLASH;
141                         color = <LED_COLOR_ID_WHITE>;
142                         flash-max-timeout-us = <250000>;
143                         flash-max-microamp = <343750>;
144                         led-max-microamp = <55000>;
145                 };
146         };
147
148         i2c-gpio-0 {
149                 compatible = "i2c-gpio";
150                 sda-gpios = <&gpio4 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
151                 scl-gpios = <&gpio4 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
152                 pinctrl-names = "default";
153                 pinctrl-0 = <&i2c_gpio_0_default>;
154                 #address-cells = <1>;
155                 #size-cells = <0>;
156                 /* TODO: this should be used by the NCP6914 Camera power management unit */
157         };
158
159         i2c-gpio-1 {
160                 compatible = "i2c-gpio";
161                 sda-gpios = <&gpio4 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
162                 scl-gpios = <&gpio4 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
163                 pinctrl-names = "default";
164                 pinctrl-0 = <&i2c_gpio_1_default>;
165                 #address-cells = <1>;
166                 #size-cells = <0>;
167                 magnetometer@c {
168                         compatible = "alps,hscdtd008a";
169                         reg = <0x0c>;
170                         avdd-supply = <&ab8500_ldo_aux1_reg>;
171                         dvdd-supply = <&ab8500_ldo_aux8_reg>;
172                 };
173         };
174
175         soc {
176                 // External Micro SD slot
177                 mmc@80126000 {
178                         arm,primecell-periphid = <0x10480180>;
179                         max-frequency = <100000000>;
180                         bus-width = <4>;
181                         cap-sd-highspeed;
182                         cap-mmc-highspeed;
183                         /* All direction control is used */
184                         st,sig-dir-cmd;
185                         st,sig-dir-dat0;
186                         st,sig-dir-dat2;
187                         st,sig-dir-dat31;
188                         st,sig-pin-fbclk;
189                         full-pwr-cycle;
190                         vmmc-supply = <&ab8500_ldo_aux3_reg>;
191                         vqmmc-supply = <&sd_level_translator>;
192                         pinctrl-names = "default", "sleep";
193                         pinctrl-0 = <&mc0_a_1_default>;
194                         pinctrl-1 = <&mc0_a_1_sleep>;
195                         status = "okay";
196                 };
197
198                 // WLAN SDIO channel
199                 mmc@80118000 {
200                         arm,primecell-periphid = <0x10480180>;
201                         max-frequency = <50000000>;
202                         bus-width = <4>;
203                         non-removable;
204                         cap-sd-highspeed;
205                         vmmc-supply = <&wlan_en>;
206                         pinctrl-names = "default", "sleep";
207                         pinctrl-0 = <&mc1_a_2_default>;
208                         pinctrl-1 = <&mc1_a_2_sleep>;
209                         status = "okay";
210                         #address-cells = <1>;
211                         #size-cells = <0>;
212
213                         wifi@1 {
214                                 compatible = "brcm,bcm4334-fmac", "brcm,bcm4329-fmac";
215                                 reg = <1>;
216                                 /* GPIO216 WL_HOST_WAKE */
217                                 interrupt-parent = <&gpio6>;
218                                 interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
219                                 interrupt-names = "host-wake";
220                                 pinctrl-names = "default";
221                                 pinctrl-0 = <&wlan_default_mode>;
222                         };
223                 };
224
225                 // eMMC
226                 mmc@80005000 {
227                         arm,primecell-periphid = <0x10480180>;
228                         max-frequency = <100000000>;
229                         bus-width = <8>;
230                         non-removable;
231                         cap-mmc-highspeed;
232                         mmc-ddr-1_8v;
233                         no-sdio;
234                         no-sd;
235                         vmmc-supply = <&ldo_3v3_reg>;
236                         pinctrl-names = "default", "sleep";
237                         pinctrl-0 = <&mc2_a_1_default>;
238                         pinctrl-1 = <&mc2_a_1_sleep>;
239
240                         status = "okay";
241                 };
242
243                 /* GBF (Bluetooth) UART */
244                 uart@80120000 {
245                         pinctrl-names = "default", "sleep";
246                         pinctrl-0 = <&u0_a_1_default>;
247                         pinctrl-1 = <&u0_a_1_sleep>;
248                         status = "okay";
249
250                         /* FIXME: not quite working yet, probably needs regulators */
251                         bluetooth {
252                                 /* BCM4334B0 actually */
253                                 compatible = "brcm,bcm4330-bt";
254                                 shutdown-gpios = <&gpio6 30 GPIO_ACTIVE_HIGH>;
255                                 device-wakeup-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
256                                 host-wakeup-gpios = <&gpio3 1 GPIO_ACTIVE_HIGH>;
257                                 pinctrl-names = "default";
258                                 pinctrl-0 = <&bluetooth_default_mode>;
259                         };
260                 };
261
262                 /* GPF UART */
263                 uart@80121000 {
264                         status = "okay";
265                         pinctrl-names = "default", "sleep";
266                         pinctrl-0 = <&u1rxtx_a_1_default &u1ctsrts_a_1_default>;
267                         pinctrl-1 = <&u1rxtx_a_1_sleep &u1ctsrts_a_1_sleep>;
268                 };
269
270                 /* Debugging console UART connected to AB8505 USB */
271                 uart@80007000 {
272                         status = "okay";
273                         pinctrl-names = "default", "sleep";
274                         pinctrl-0 = <&u2rxtx_c_1_default>;
275                         pinctrl-1 = <&u2rxtx_c_1_sleep>;
276                 };
277
278                 prcmu@80157000 {
279                         ab8505 {
280                                 ab8500_usb {
281                                         pinctrl-names = "default", "sleep";
282                                         pinctrl-0 = <&usb_a_1_default>;
283                                         pinctrl-1 = <&usb_a_1_sleep>;
284                                 };
285
286                                 ab8505-regulators {
287                                         ab8500_ldo_aux1 {
288                                                 /* Used for VDD for sensors */
289                                                 regulator-name = "AUX1";
290                                                 regulator-min-microvolt = <3000000>;
291                                                 regulator-max-microvolt = <3300000>;
292                                         };
293
294                                         ab8500_ldo_aux2 {
295                                                 /* Supplies the Cypress TMA140 touchscreen only with 3.3V */
296                                                 regulator-name = "AUX2";
297                                                 regulator-min-microvolt = <3300000>;
298                                                 regulator-max-microvolt = <3300000>;
299                                         };
300
301                                         ab8500_ldo_aux3 {
302                                                 /* Used for voltage for external MMC/SD card */
303                                                 regulator-name = "AUX3";
304                                                 regulator-min-microvolt = <1100000>;
305                                                 regulator-max-microvolt = <3300000>;
306                                         };
307
308                                         ab8500_ldo_aux4 {
309                                                 regulator-name = "AUX4";
310                                                 /* Hammer to 3.0V for the display */
311                                                 regulator-min-microvolt = <3000000>;
312                                                 regulator-max-microvolt = <3000000>;
313                                         };
314
315                                         ab8500_ldo_aux5 {
316                                                 regulator-name = "AUX5";
317                                                 regulator-min-microvolt = <1050000>;
318                                                 regulator-max-microvolt = <2790000>;
319                                                 regulator-always-on;
320                                         };
321
322                                         ab8500_ldo_aux6 {
323                                                 regulator-name = "AUX6";
324                                                 /* Hammer to 1.8V for the display */
325                                                 regulator-min-microvolt = <1800000>;
326                                                 regulator-max-microvolt = <1800000>;
327                                         };
328
329                                         ab8500_ldo_aux8 {
330                                                 /* Mostly VIO for sensors */
331                                                 regulator-name = "AUX8";
332                                         };
333                                 };
334                         };
335                 };
336
337                 /* I2C0 */
338                 i2c@80004000 {
339                         status = "okay";
340
341                         pinctrl-names = "default", "sleep";
342                         pinctrl-0 = <&i2c0_a_1_default>;
343                         pinctrl-1 = <&i2c0_a_1_sleep>;
344
345                         proximity@44 {
346                                 compatible = "sharp,gp2ap002s00f";
347                                 clock-frequency = <400000>;
348                                 reg = <0x44>;
349
350                                 interrupt-parent = <&gpio4>;
351                                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
352                                 vdd-supply = <&ab8500_ldo_aux1_reg>;
353                                 vio-supply = <&ab8500_ldo_aux8_reg>;
354                                 pinctrl-names = "default";
355                                 pinctrl-0 = <&gp2ap002_skomer_default>;
356                                 sharp,proximity-far-hysteresis = /bits/ 8 <0x2f>;
357                                 sharp,proximity-close-hysteresis = /bits/ 8 <0x0f>;
358                         };
359                 };
360
361
362                 /* I2C2 */
363                 i2c@80128000 {
364                         status = "okay";
365
366                         pinctrl-names = "default", "sleep";
367                         pinctrl-0 = <&i2c2_b_2_default>;
368                         pinctrl-1 = <&i2c2_b_2_sleep>;
369
370                         accel@18 {
371                                 compatible = "bosch,bma254";
372                                 clock-frequency = <400000>;
373                                 reg = <0x18>;
374
375                                 /* GPIO224 used as "smart alert" interrupt */
376                                 interrupt-parent = <&gpio7>;
377                                 interrupts = <0 IRQ_TYPE_EDGE_RISING>;
378
379                                 mount-matrix = "0", "-1", "0",
380                                               "1", "0", "0",
381                                                "0", "0", "1";
382                                 vdd-supply = <&ab8500_ldo_aux1_reg>;
383                                 vddio-supply = <&ab8500_ldo_aux8_reg>;
384                                 pinctrl-names = "default";
385                                 pinctrl-0 = <&bma254_skomer_default>;
386                         };
387                 };
388
389                 /* I2C3 */
390                 i2c@80110000 {
391                         status = "okay";
392
393                         pinctrl-names = "default", "sleep";
394                         pinctrl-0 = <&i2c3_c_2_default>;
395                         pinctrl-1 = <&i2c3_c_2_sleep>;
396
397                         /* Cypress CY8CTMA140 touchscreen */
398                         touchscreen@20 {
399                                 compatible = "cypress,cy8ctma140";
400                                 clock-frequency = <400000>;
401                                 reg = <0x20>;
402
403                                 touchscreen-size-x = <480>;
404                                 touchscreen-size-y = <800>;
405                                 touchscreen-max-pressure = <255>;
406
407                                 /* GPIO218 for IRQ */
408                                 interrupt-parent = <&gpio6>;
409                                 interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
410
411                                 /* VDD is "digital supply" nominally 1.71-3.6V */
412                                 vdd-supply = <&ab8500_ldo_aux2_reg>;
413                                 /* VCPIN is "analog supply", 2.7-3.6 V */
414                                 vcpin-supply = <&ab8500_ldo_aux2_reg>;
415
416                                 pinctrl-names = "default";
417                                 pinctrl-0 = <&tma140_skomer_default>;
418                         };
419                 };
420
421                 mcde@a0350000 {
422                         status = "okay";
423                         pinctrl-names = "default";
424                         pinctrl-0 = <&dsi_default_mode>;
425
426                         dsi@a0351000 {
427                                 panel {
428                                         /* NT35510-based Hydis HVA40WV1 */
429                                         compatible = "hydis,hva40wv1", "novatek,nt35510";
430                                         reg = <0>;
431                                         /* v_lcd_3v0 2.3-4.8V */
432                                         vdd-supply = <&ab8500_ldo_aux4_reg>;
433                                         /* v_lcd_1v8 1.65-3.3V */
434                                         vddi-supply = <&ab8500_ldo_aux6_reg>;
435                                         /* GPIO 139 */
436                                         reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
437                                         pinctrl-names = "default";
438                                         pinctrl-0 = <&display_default_mode>;
439                                         backlight = <&ktd253>;
440                                 };
441                         };
442                 };
443         };
444 };
445
446 &pinctrl {
447         /*
448          * This extends the MC0 default config to include DAT32DIR
449          * which is used by this machine. If we don't do this the
450          * SD card does not work.
451          */
452         sdi0 {
453                 mc0_a_1_default {
454                         default_mux {
455                                 function = "mc0";
456                                 /* This machine uses the DAT31 pin */
457                                 groups = "mc0_a_1", "mc0dat31dir_a_1";
458                         };
459                         default_cfg5 {
460                                 pins = "GPIO21_AB3"; /* DAT31DIR */
461                                 ste,config = <&out_hi>;
462                         };
463                 };
464         };
465
466         /* The unused FBCLK needs to be pulled down on this machine */
467         sdi2 {
468                 mc2_a_1_default {
469                         default_cfg2 {
470                                 pins = "GPIO130_C8"; /* FBCLK */
471                                 ste,config = <&in_pd>;
472                         };
473                 };
474         };
475
476         mcde {
477                 dsi_default_mode: dsi_default {
478                         default_mux1 {
479                                 /* Mux in VSI0 used for DSI TE */
480                                 function = "lcd";
481                                 groups = "lcdvsi0_a_1"; /* VSI0 for LCD */
482                         };
483                         default_cfg1 {
484                                 pins = "GPIO68_E1"; /* VSI0 */
485                                 ste,config = <&in_nopull>;
486                         };
487                 };
488         };
489
490         /* Two GPIO lines used by the display */
491         display {
492                 display_default_mode: display_default {
493                         skomer_cfg1 {
494                                 /*
495                                  * OLED DETECT or check_pba, this appears to be high
496                                  * on "PBA" which I guess is "prototype board A".
497                                  */
498                                 pins = "GPIO93_B7";
499                                 ste,config = <&gpio_in_nopull>;
500                         };
501                         skomer_cfg2 {
502                                 pins = "GPIO139_C9";
503                                 /*
504                                  * MIPI_DSI0_RESET_N resets the display, leave high
505                                  * (de-asserted) so we only assert reset explicitly
506                                  * from the display driver.
507                                  */
508                                 ste,config = <&gpio_out_hi>;
509                         };
510                 };
511         };
512         backlight {
513                 gpio_backlight_default_mode: backlight_default {
514                         skomer_cfg1 {
515                                 pins = "GPIO69_E2"; /* LCD_BL_CTRL */
516                                 ste,config = <&gpio_out_lo>;
517                         };
518                 };
519         };
520         flash {
521                 gpio_flash_default_mode: flash_default {
522                         skomer_cfg1 {
523                                 pins = "GPIO140_B11", "GPIO141_C12";
524                                 ste,config = <&gpio_out_lo>;
525                         };
526                 };
527         };
528         /* GPIO that enables the 2.9V SD card level translator */
529         sd-level-translator {
530                 sd_level_translator_default: sd_level_translator_default {
531                         /* level shifter on GPIO87 */
532                         skomer_cfg1 {
533                                 pins = "GPIO87_B3";
534                                 ste,config = <&gpio_out_hi>;
535                         };
536                 };
537         };
538         /* GPIO that enables the LDO regulator for the eMMC */
539         emmc-ldo {
540                 emmc_ldo_en_default_mode: emmc_ldo_default {
541                         /* LDO enable on GPIO223 */
542                         skomer_cfg1 {
543                                 pins = "GPIO223_AH9";
544                                 ste,config = <&gpio_out_hi>;
545                         };
546                 };
547         };
548         /* GPIO keys */
549         gpio-keys {
550                 gpio_keys_default_mode: gpio_keys_default {
551                         skomer_cfg1 {
552                                 pins = "GPIO67_G2", /* VOL UP */
553                                        "GPIO91_B6", /* HOME */
554                                        "GPIO92_D6", /* VOL DOWN */
555                                        "GPIO204_AF23", /* MENU */
556                                        "GPIO205_AG23"; /* BACK */
557                                         ste,config = <&gpio_in_pu>;
558                         };
559                 };
560         };
561         /* Interrupt line for BMA254 */
562         bma254 {
563                 bma254_skomer_default: bma254_skomer {
564                         skomer_cfg1 {
565                                 pins = "GPIO224_AG9";
566                                 ste,config = <&gpio_in_pd>;
567                         };
568                 };
569         };
570         /* Interrupt line for light/proximity sensor GP2AP002 */
571         gp2ap002 {
572                 gp2ap002_skomer_default: gp2ap002_skomer {
573                         skomer_cfg1 {
574                                 pins = "GPIO146_D13";
575                                 ste,config = <&gpio_in_nopull>;
576                         };
577                 };
578         };
579         /* GPIO-based I2C bus for NCP6914 */
580         i2c-gpio-0 {
581                 i2c_gpio_0_default: i2c_gpio_0 {
582                         skomer_cfg1 {
583                                 pins = "GPIO143_D12", "GPIO144_B13";
584                                 ste,config = <&gpio_in_nopull>;
585                         };
586                 };
587         };
588         /* GPIO-based I2C bus for ALPS HSCD compass */
589         i2c-gpio-1 {
590                 i2c_gpio_1_default: i2c_gpio_1 {
591                         skomer_cfg1 {
592                                 pins = "GPIO151_B17", "GPIO152_D16";
593                                 ste,config = <&gpio_in_nopull>;
594                         };
595                 };
596         };
597         wlan {
598                 wlan_default_mode: wlan_default {
599                         skomer_cfg1 {
600                                 pins = "GPIO216_AG12";
601                                 ste,config = <&gpio_in_pd>;
602                         };
603                 };
604                 wlan_en_default_mode: wlan_en_default {
605                         skomer_cfg2 {
606                                 pins = "GPIO215_AH13";
607                                 ste,config = <&gpio_out_lo>;
608                         };
609                 };
610         };
611         bluetooth {
612                 bluetooth_default_mode: bluetooth_default {
613                         skomer_cfg1 {
614                                 pins = "GPIO199_AH23", "GPIO222_AJ9";
615                                 ste,config = <&gpio_out_lo>;
616                         };
617                         skomer_cfg2 {
618                                 pins = "GPIO97_D9";
619                                 ste,config = <&gpio_in_nopull>;
620                         };
621                 };
622         };
623         vibrator {
624                 vibrator_default: vibrator_default {
625                         skomer_cfg1 {
626                                 pins = "GPIO195_AG28";  /* MOT_EN */
627                                 ste,config = <&gpio_out_lo>;
628                         };
629                 };
630         };
631         /* Interrupt line for the Cypress TMA140 touchscreen */
632         touchscreen {
633                 tma140_skomer_default: tma140_skomer {
634                         skomer_cfg1 {
635                                 pins = "GPIO218_AH11";
636                                 ste,config = <&gpio_in_nopull>;
637                         };
638                 };
639         };
640 };
641
642 &ab8505_gpio {
643         /* Hog a few default settings */
644         pinctrl-names = "default";
645         pinctrl-0 = <&gpio_default>;
646
647         gpio {
648                 gpio_default: gpio_default {
649                         skomer_mux {
650                                 /* Change unused pins to GPIO mode */
651                                 function = "gpio";
652                                 groups = "gpio3_a_1",   /* default: SysClkReq4 */
653                                          "gpio14_a_1";  /* default: PWMOut1 */
654                         };
655                         skomer_cfg1 {
656                                 pins = "GPIO11_B17", "GPIO13_D17", "GPIO50_L4";
657                                 bias-disable;
658                         };
659                 };
660         };
661 };