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	battery: battery {
24		compatible = "samsung,eb485159lu";
25	};
26
27	thermal-zones {
28		battery-thermal {
29			/* This zone will be polled by the battery temperature code */
30			polling-delay = <0>;
31			polling-delay-passive = <0>;
32			thermal-sensors = <&bat_therm>;
33
34			trips {
35				battery-crit-hi {
36					temperature = <70000>;
37					hysteresis = <2000>;
38					type = "critical";
39				};
40			};
41		};
42	};
43
44	bat_therm: thermistor {
45		compatible = "samsung,1404-001221";
46		io-channels = <&gpadc 0x02>; /* BatTemp */
47		pullup-uv = <1800000>;
48		pullup-ohm = <230000>;
49		pulldown-ohm = <0>;
50		#thermal-sensor-cells = <0>;
51	};
52
53	/* TI TXS0206 level translator for 2.9 V */
54	sd_level_translator: regulator-gpio {
55		compatible = "regulator-fixed";
56
57		/* GPIO87 EN */
58		gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>;
59		enable-active-high;
60
61		regulator-name = "sd-level-translator";
62		regulator-min-microvolt = <2900000>;
63		regulator-max-microvolt = <2900000>;
64		regulator-type = "voltage";
65
66		startup-delay-us = <200>;
67
68		pinctrl-names = "default";
69		pinctrl-0 = <&sd_level_translator_default>;
70	};
71
72	/* External LDO MIC5366-3.3YMT for eMMC */
73	ldo_3v3_reg: regulator-gpio-ldo-3v3 {
74		compatible = "regulator-fixed";
75		regulator-name = "en-3v3-fixed-supply";
76		regulator-min-microvolt = <3300000>;
77		regulator-max-microvolt = <3300000>;
78		gpio = <&gpio6 31 GPIO_ACTIVE_HIGH>;
79		startup-delay-us = <5000>;
80		enable-active-high;
81		pinctrl-names = "default";
82		pinctrl-0 = <&emmc_ldo_en_default_mode>;
83	};
84
85	wlan_en: regulator-gpio-wlan-en {
86		compatible = "regulator-fixed";
87		regulator-name = "wl-reg-on";
88		regulator-min-microvolt = <3000000>;
89		regulator-max-microvolt = <3000000>;
90		startup-delay-us = <200000>;
91		/* GPIO215 WLAN_EN */
92		gpio = <&gpio6 23 GPIO_ACTIVE_HIGH>;
93		enable-active-high;
94		pinctrl-names = "default";
95		pinctrl-0 = <&wlan_en_default_mode>;
96	};
97
98	vibrator {
99		compatible = "gpio-vibrator";
100		enable-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>;
101		pinctrl-names = "default";
102		pinctrl-0 = <&vibrator_default>;
103	};
104
105	gpio-keys {
106		compatible = "gpio-keys";
107		pinctrl-names = "default";
108		pinctrl-0 = <&gpio_keys_default_mode>;
109
110		button-home {
111			linux,code = <KEY_HOME>;
112			label = "HOME";
113			/* GPIO91 */
114			gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
115		};
116		button-volup {
117			linux,code = <KEY_VOLUMEUP>;
118			label = "VOL+";
119			/* GPIO67 */
120			gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
121		};
122		button-voldown {
123			linux,code = <KEY_VOLUMEDOWN>;
124			label = "VOL-";
125			/* GPIO92 */
126			gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
127		};
128		button-menu {
129			linux,code = <KEY_MENU>;
130			label = "MENU";
131			/* GPIO204 */
132			gpios = <&gpio6 12 GPIO_ACTIVE_LOW>;
133		};
134		button-back {
135			linux,code = <KEY_BACK>;
136			label = "BACK";
137			/* GPIO205 */
138			gpios = <&gpio6 13 GPIO_ACTIVE_LOW>;
139		};
140	};
141
142	ktd253: backlight {
143		compatible = "kinetic,ktd253";
144		/* GPIO 69 */
145		enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
146		/* Default to 13/32 brightness */
147		default-brightness = <13>;
148		pinctrl-names = "default";
149		pinctrl-0 = <&gpio_backlight_default_mode>;
150	};
151
152	/* Richtek RT8515GQW Flash LED Driver IC */
153	flash {
154		compatible = "richtek,rt8515";
155		/* GPIO 140 */
156		enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
157		/* GPIO 141 */
158		ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
159		/*
160		 * RFS is 16 kOhm and RTS is 100 kOhm giving
161		 * the flash max current 343mA and torch max
162		 * current 55 mA.
163		 */
164		richtek,rfs-ohms = <16000>;
165		richtek,rts-ohms = <100000>;
166		pinctrl-names = "default";
167		pinctrl-0 = <&gpio_flash_default_mode>;
168
169		led {
170			function = LED_FUNCTION_FLASH;
171			color = <LED_COLOR_ID_WHITE>;
172			flash-max-timeout-us = <250000>;
173			flash-max-microamp = <343750>;
174			led-max-microamp = <55000>;
175		};
176	};
177
178	i2c-gpio-0 {
179		compatible = "i2c-gpio";
180		sda-gpios = <&gpio4 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
181		scl-gpios = <&gpio4 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
182		pinctrl-names = "default";
183		pinctrl-0 = <&i2c_gpio_0_default>;
184		#address-cells = <1>;
185		#size-cells = <0>;
186		/* TODO: this should be used by the NCP6914 Camera power management unit */
187	};
188
189	i2c-gpio-1 {
190		compatible = "i2c-gpio";
191		sda-gpios = <&gpio4 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
192		scl-gpios = <&gpio4 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
193		pinctrl-names = "default";
194		pinctrl-0 = <&i2c_gpio_1_default>;
195		#address-cells = <1>;
196		#size-cells = <0>;
197		magnetometer@c {
198			compatible = "alps,hscdtd008a";
199			reg = <0x0c>;
200			avdd-supply = <&ab8500_ldo_aux1_reg>;
201			dvdd-supply = <&ab8500_ldo_aux8_reg>;
202		};
203	};
204
205	soc {
206		// External Micro SD slot
207		mmc@80126000 {
208			arm,primecell-periphid = <0x10480180>;
209			max-frequency = <100000000>;
210			bus-width = <4>;
211			cap-sd-highspeed;
212			cap-mmc-highspeed;
213			/* All direction control is used */
214			st,sig-pin-fbclk;
215			full-pwr-cycle;
216			vmmc-supply = <&ab8500_ldo_aux3_reg>;
217			vqmmc-supply = <&sd_level_translator>;
218			pinctrl-names = "default", "sleep";
219			pinctrl-0 = <&mc0_a_1_default>;
220			pinctrl-1 = <&mc0_a_1_sleep>;
221			status = "okay";
222		};
223
224		// WLAN SDIO channel
225		mmc@80118000 {
226			arm,primecell-periphid = <0x10480180>;
227			max-frequency = <50000000>;
228			bus-width = <4>;
229			non-removable;
230			cap-sd-highspeed;
231			vmmc-supply = <&wlan_en>;
232			pinctrl-names = "default", "sleep";
233			pinctrl-0 = <&mc1_a_2_default>;
234			pinctrl-1 = <&mc1_a_2_sleep>;
235			status = "okay";
236			#address-cells = <1>;
237			#size-cells = <0>;
238
239			wifi@1 {
240				compatible = "brcm,bcm4334-fmac", "brcm,bcm4329-fmac";
241				reg = <1>;
242				/* GPIO216 WL_HOST_WAKE */
243				interrupt-parent = <&gpio6>;
244				interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
245				interrupt-names = "host-wake";
246				pinctrl-names = "default";
247				pinctrl-0 = <&wlan_default_mode>;
248			};
249		};
250
251		/*
252		 * eMMC seems to be mostly Samsung KLM4G1YE4C "4YMD1R"
253		 */
254		mmc@80005000 {
255			arm,primecell-periphid = <0x10480180>;
256		        max-frequency = <100000000>;
257			bus-width = <8>;
258			non-removable;
259			cap-mmc-highspeed;
260			mmc-ddr-1_8v;
261			no-sdio;
262			no-sd;
263			/* From datasheet page 26 figure 9: 300 ms set-up time for 4GB */
264			post-power-on-delay-ms = <300>;
265			vmmc-supply = <&ldo_3v3_reg>;
266			pinctrl-names = "default", "sleep";
267			pinctrl-0 = <&mc2_a_1_default>;
268			pinctrl-1 = <&mc2_a_1_sleep>;
269
270			status = "okay";
271		};
272
273		/* GBF (Bluetooth) UART */
274		uart@80120000 {
275			pinctrl-names = "default", "sleep";
276			pinctrl-0 = <&u0_a_1_default>;
277			pinctrl-1 = <&u0_a_1_sleep>;
278			status = "okay";
279
280			/* FIXME: not quite working yet, probably needs regulators */
281			bluetooth {
282				/* BCM4334B0 actually */
283				compatible = "brcm,bcm4330-bt";
284				shutdown-gpios = <&gpio6 30 GPIO_ACTIVE_HIGH>;
285				device-wakeup-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
286				host-wakeup-gpios = <&gpio3 1 GPIO_ACTIVE_HIGH>;
287				pinctrl-names = "default";
288				pinctrl-0 = <&bluetooth_default_mode>;
289			};
290		};
291
292		/* GPS UART */
293		uart@80121000 {
294			status = "okay";
295			pinctrl-names = "default", "sleep";
296			pinctrl-0 = <&u1rxtx_a_1_default &u1ctsrts_a_1_default>;
297			pinctrl-1 = <&u1rxtx_a_1_sleep &u1ctsrts_a_1_sleep>;
298
299			gnss {
300				/* The CSRG05TA03-ICJE-R is a SirfStarV 5t chip */
301				compatible = "csr,csrg05ta03-icje-r";
302				/* GPS_RSTN on GPIO209 */
303				reset-gpios = <&gpio6 17 GPIO_ACTIVE_LOW>;
304				/* GPS_ON_OFF on GPIO86 */
305				sirf,onoff-gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>;
306				/* GPS_1V8 (VSMPS2) */
307				vcc-supply = <&db8500_vsmps2_reg>;
308				pinctrl-names = "default";
309				pinctrl-0 = <&g05ta03_skomer_default>;
310				/* According to /etc/sirfgps.conf */
311				current-speed = <460800>;
312			};
313		};
314
315		/* Debugging console UART connected to AB8505 USB */
316		uart@80007000 {
317			status = "okay";
318			pinctrl-names = "default", "sleep";
319			pinctrl-0 = <&u2rxtx_c_1_default>;
320			pinctrl-1 = <&u2rxtx_c_1_sleep>;
321		};
322
323		prcmu@80157000 {
324			ab8505 {
325				phy {
326					pinctrl-names = "default", "sleep";
327					pinctrl-0 = <&usb_a_1_default>;
328					pinctrl-1 = <&usb_a_1_sleep>;
329				};
330
331				ab8500_fg {
332					line-impedance-micro-ohms = <16000>;
333				};
334
335				regulator {
336					ab8500_ldo_aux1 {
337						/* Used for VDD for sensors */
338						regulator-name = "AUX1";
339						regulator-min-microvolt = <3000000>;
340						regulator-max-microvolt = <3300000>;
341					};
342
343					ab8500_ldo_aux2 {
344						/* Supplies the Cypress TMA140 touchscreen only with 3.0V */
345						regulator-name = "AUX2";
346						regulator-min-microvolt = <3000000>;
347						regulator-max-microvolt = <3000000>;
348					};
349
350					ab8500_ldo_aux3 {
351						/* Used for voltage for external MMC/SD card */
352						regulator-name = "AUX3";
353						regulator-min-microvolt = <1100000>;
354						regulator-max-microvolt = <3300000>;
355					};
356
357					ab8500_ldo_aux4 {
358						regulator-name = "AUX4";
359						/* Hammer to 3.0V for the display */
360						regulator-min-microvolt = <3000000>;
361						regulator-max-microvolt = <3000000>;
362					};
363
364					ab8500_ldo_aux5 {
365						regulator-name = "AUX5";
366						/* Intended for 1V8 for touchscreen but actually left unused */
367						regulator-min-microvolt = <1050000>;
368						regulator-max-microvolt = <2790000>;
369					};
370
371					ab8500_ldo_aux6 {
372						regulator-name = "AUX6";
373						/* Hammer to 1.8V for the display */
374						regulator-min-microvolt = <1800000>;
375						regulator-max-microvolt = <1800000>;
376					};
377
378					ab8500_ldo_aux8 {
379						/* Mostly VIO for sensors */
380						regulator-name = "AUX8";
381					};
382				};
383			};
384		};
385
386		/* I2C0 */
387		i2c@80004000 {
388			status = "okay";
389
390			pinctrl-names = "default", "sleep";
391			pinctrl-0 = <&i2c0_a_1_default>;
392			pinctrl-1 = <&i2c0_a_1_sleep>;
393
394			proximity@44 {
395				compatible = "sharp,gp2ap002s00f";
396				clock-frequency = <400000>;
397				reg = <0x44>;
398
399				interrupt-parent = <&gpio4>;
400				interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
401				vdd-supply = <&ab8500_ldo_aux1_reg>;
402				vio-supply = <&ab8500_ldo_aux8_reg>;
403				pinctrl-names = "default";
404				pinctrl-0 = <&gp2ap002_skomer_default>;
405				sharp,proximity-far-hysteresis = /bits/ 8 <0x2f>;
406				sharp,proximity-close-hysteresis = /bits/ 8 <0x0f>;
407			};
408		};
409
410
411		/* I2C2 */
412		i2c@80128000 {
413			status = "okay";
414
415			pinctrl-names = "default", "sleep";
416			pinctrl-0 = <&i2c2_b_2_default>;
417			pinctrl-1 = <&i2c2_b_2_sleep>;
418
419			accel@18 {
420				compatible = "bosch,bma254";
421				clock-frequency = <400000>;
422				reg = <0x18>;
423
424				/* GPIO224 used as "smart alert" interrupt */
425				interrupt-parent = <&gpio7>;
426				interrupts = <0 IRQ_TYPE_EDGE_RISING>;
427
428				mount-matrix = "0", "-1", "0",
429					      "1", "0", "0",
430					       "0", "0", "1";
431				vdd-supply = <&ab8500_ldo_aux1_reg>;
432				vddio-supply = <&ab8500_ldo_aux8_reg>;
433				pinctrl-names = "default";
434				pinctrl-0 = <&bma254_skomer_default>;
435			};
436		};
437
438		/* I2C3 */
439		i2c@80110000 {
440			status = "okay";
441
442			pinctrl-names = "default", "sleep";
443			pinctrl-0 = <&i2c3_c_2_default>;
444			pinctrl-1 = <&i2c3_c_2_sleep>;
445
446			/* Cypress CY8CTMA140 touchscreen */
447			touchscreen@20 {
448				compatible = "cypress,cy8ctma140";
449				clock-frequency = <400000>;
450				reg = <0x20>;
451
452				touchscreen-size-x = <480>;
453				touchscreen-size-y = <800>;
454				touchscreen-max-pressure = <255>;
455
456				/* GPIO218 for IRQ */
457				interrupt-parent = <&gpio6>;
458				interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
459
460				/* VDD is "digital supply" nominally 1.71-3.6V */
461				vdd-supply = <&ab8500_ldo_aux2_reg>;
462				/* VCPIN is "analog supply", 2.7-3.6 V */
463				vcpin-supply = <&ab8500_ldo_aux2_reg>;
464
465				pinctrl-names = "default";
466				pinctrl-0 = <&tma140_skomer_default>;
467			};
468		};
469
470		mcde@a0350000 {
471			status = "okay";
472			pinctrl-names = "default";
473			pinctrl-0 = <&dsi_default_mode>;
474
475			dsi@a0351000 {
476				panel {
477					/* NT35510-based Hydis HVA40WV1 */
478					compatible = "hydis,hva40wv1", "novatek,nt35510";
479					reg = <0>;
480					/* v_lcd_3v0 2.3-4.8V */
481					vdd-supply = <&ab8500_ldo_aux4_reg>;
482					/* v_lcd_1v8 1.65-3.3V */
483					vddi-supply = <&ab8500_ldo_aux6_reg>;
484					/* GPIO 139 */
485					reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
486					pinctrl-names = "default";
487					pinctrl-0 = <&display_default_mode>;
488					backlight = <&ktd253>;
489				};
490			};
491		};
492	};
493};
494
495&pinctrl {
496	sdi0 {
497		mc0_a_1_default {
498			default_cfg1 {
499				/* GPIO18, 19 & 20 unused so pull down */
500				ste,config = <&gpio_in_pd>;
501			};
502		};
503	};
504
505	/* This is a reset line for the eMMC */
506	sdi2 {
507		mc2_a_1_default {
508			default_cfg2 {
509				pins = "GPIO130_C8"; /* FBCLK */
510				ste,config = <&gpio_in_pd>;
511			};
512		};
513	};
514
515	mcde {
516		dsi_default_mode: dsi_default {
517			default_mux1 {
518				/* Mux in VSI0 used for DSI TE */
519				function = "lcd";
520				groups = "lcdvsi0_a_1"; /* VSI0 for LCD */
521			};
522			default_cfg1 {
523				pins = "GPIO68_E1"; /* VSI0 */
524				ste,config = <&in_nopull>;
525			};
526		};
527	};
528
529	/* Two GPIO lines used by the display */
530	display {
531		display_default_mode: display_default {
532			skomer_cfg1 {
533				/*
534				 * OLED DETECT or check_pba, this appears to be high
535				 * on "PBA" which I guess is "prototype board A".
536				 */
537				pins = "GPIO93_B7";
538				ste,config = <&gpio_in_nopull>;
539			};
540			skomer_cfg2 {
541				pins = "GPIO139_C9";
542				/*
543				 * MIPI_DSI0_RESET_N resets the display, leave high
544				 * (de-asserted) so we only assert reset explicitly
545				 * from the display driver.
546				 */
547				ste,config = <&gpio_out_hi>;
548			};
549		};
550	};
551	backlight {
552		gpio_backlight_default_mode: backlight_default {
553			skomer_cfg1 {
554				pins = "GPIO69_E2"; /* LCD_BL_CTRL */
555				ste,config = <&gpio_out_lo>;
556			};
557		};
558	};
559	flash {
560		gpio_flash_default_mode: flash_default {
561			skomer_cfg1 {
562				pins = "GPIO140_B11", "GPIO141_C12";
563				ste,config = <&gpio_out_lo>;
564			};
565		};
566	};
567	/* GPIO that enables the 2.9V SD card level translator */
568	sd-level-translator {
569		sd_level_translator_default: sd_level_translator_default {
570			/* level shifter on GPIO87 */
571			skomer_cfg1 {
572				pins = "GPIO87_B3";
573				ste,config = <&gpio_out_hi>;
574			};
575		};
576	};
577	/* GPIO that enables the LDO regulator for the eMMC */
578	emmc-ldo {
579		emmc_ldo_en_default_mode: emmc_ldo_default {
580			/* LDO enable on GPIO223 */
581			skomer_cfg1 {
582				pins = "GPIO223_AH9";
583				ste,config = <&gpio_out_hi>;
584			};
585		};
586	};
587	/* GPIO keys */
588	gpio-keys {
589		gpio_keys_default_mode: gpio_keys_default {
590			skomer_cfg1 {
591				pins = "GPIO67_G2", /* VOL UP */
592				       "GPIO91_B6", /* HOME */
593				       "GPIO92_D6", /* VOL DOWN */
594				       "GPIO204_AF23", /* MENU */
595				       "GPIO205_AG23"; /* BACK */
596					ste,config = <&gpio_in_pu>;
597			};
598		};
599	};
600	/* Interrupt line for BMA254 */
601	bma254 {
602		bma254_skomer_default: bma254_skomer {
603			skomer_cfg1 {
604				pins = "GPIO224_AG9";
605				ste,config = <&gpio_in_pd>;
606			};
607		};
608	};
609	/* Interrupt line for light/proximity sensor GP2AP002 */
610	gp2ap002 {
611		gp2ap002_skomer_default: gp2ap002_skomer {
612			skomer_cfg1 {
613				pins = "GPIO146_D13";
614				ste,config = <&gpio_in_nopull>;
615			};
616		};
617	};
618	/* GPIO-based I2C bus for NCP6914 */
619	i2c-gpio-0 {
620		i2c_gpio_0_default: i2c_gpio_0 {
621			skomer_cfg1 {
622				pins = "GPIO143_D12", "GPIO144_B13";
623				ste,config = <&gpio_in_nopull>;
624			};
625		};
626	};
627	/* GPIO-based I2C bus for ALPS HSCD compass */
628	i2c-gpio-1 {
629		i2c_gpio_1_default: i2c_gpio_1 {
630			skomer_cfg1 {
631				pins = "GPIO151_B17", "GPIO152_D16";
632				ste,config = <&gpio_in_nopull>;
633			};
634		};
635	};
636	wlan {
637		wlan_default_mode: wlan_default {
638			skomer_cfg1 {
639				pins = "GPIO216_AG12";
640				ste,config = <&gpio_in_pd>;
641			};
642		};
643		wlan_en_default_mode: wlan_en_default {
644			skomer_cfg2 {
645				pins = "GPIO215_AH13";
646				ste,config = <&gpio_out_lo>;
647			};
648		};
649	};
650	bluetooth {
651		bluetooth_default_mode: bluetooth_default {
652			skomer_cfg1 {
653				pins = "GPIO199_AH23", "GPIO222_AJ9";
654				ste,config = <&gpio_out_lo>;
655			};
656			skomer_cfg2 {
657				pins = "GPIO97_D9";
658				ste,config = <&gpio_in_nopull>;
659			};
660		};
661	};
662	vibrator {
663		vibrator_default: vibrator_default {
664			skomer_cfg1 {
665				pins = "GPIO195_AG28";	/* MOT_EN */
666				ste,config = <&gpio_out_lo>;
667			};
668		};
669	};
670	/* Interrupt line for the Cypress TMA140 touchscreen */
671	touchscreen {
672		tma140_skomer_default: tma140_skomer {
673			skomer_cfg1 {
674				pins = "GPIO218_AH11";
675				ste,config = <&gpio_in_nopull>;
676			};
677		};
678	};
679	g05ta03 {
680		g05ta03_skomer_default: g05ta03 {
681			/* Reset line, start out de-asserted */
682			skomer_cfg1 {
683				pins = "GPIO209_AG15";
684				ste,config = <&gpio_out_hi>;
685			};
686			/* GPS_ON_OFF, start out deasserted (off) */
687			skomer_cfg2 {
688				pins = "GPIO86_C6";
689				ste,config = <&gpio_out_lo>;
690			};
691		};
692	};
693};
694
695&ab8505_gpio {
696	/* Hog a few default settings */
697	pinctrl-names = "default";
698	pinctrl-0 = <&gpio_default>;
699
700	gpio {
701		gpio_default: gpio_default {
702			skomer_mux {
703				/* Change unused pins to GPIO mode */
704				function = "gpio";
705				groups = "gpio3_a_1",	/* default: SysClkReq4 */
706					 "gpio14_a_1";	/* default: PWMOut1 */
707			};
708			skomer_cfg1 {
709				pins = "GPIO11_B17", "GPIO13_D17", "GPIO50_L4";
710				bias-disable;
711			};
712		};
713	};
714};
715