summaryrefslogtreecommitdiff
path: root/drivers/soc/imx/gpcv2.c
blob: 3e59d479d001e99c15a46303ff862063339462cd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2017 Impinj, Inc
 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
 *
 * Based on the code of analogus driver:
 *
 * Copyright 2015-2017 Pengutronix, Lucas Stach <kernel@pengutronix.de>
 */

#include <linux/clk.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/sizes.h>
#include <dt-bindings/power/imx7-power.h>
#include <dt-bindings/power/imx8mq-power.h>
#include <dt-bindings/power/imx8mm-power.h>
#include <dt-bindings/power/imx8mn-power.h>

#define GPC_LPCR_A_CORE_BSC			0x000

#define GPC_PGC_CPU_MAPPING		0x0ec

#define IMX7_USB_HSIC_PHY_A_CORE_DOMAIN		BIT(6)
#define IMX7_USB_OTG2_PHY_A_CORE_DOMAIN		BIT(5)
#define IMX7_USB_OTG1_PHY_A_CORE_DOMAIN		BIT(4)
#define IMX7_PCIE_PHY_A_CORE_DOMAIN		BIT(3)
#define IMX7_MIPI_PHY_A_CORE_DOMAIN		BIT(2)

#define IMX8M_PCIE2_A53_DOMAIN			BIT(15)
#define IMX8M_MIPI_CSI2_A53_DOMAIN		BIT(14)
#define IMX8M_MIPI_CSI1_A53_DOMAIN		BIT(13)
#define IMX8M_DISP_A53_DOMAIN			BIT(12)
#define IMX8M_HDMI_A53_DOMAIN			BIT(11)
#define IMX8M_VPU_A53_DOMAIN			BIT(10)
#define IMX8M_GPU_A53_DOMAIN			BIT(9)
#define IMX8M_DDR2_A53_DOMAIN			BIT(8)
#define IMX8M_DDR1_A53_DOMAIN			BIT(7)
#define IMX8M_OTG2_A53_DOMAIN			BIT(5)
#define IMX8M_OTG1_A53_DOMAIN			BIT(4)
#define IMX8M_PCIE1_A53_DOMAIN			BIT(3)
#define IMX8M_MIPI_A53_DOMAIN			BIT(2)

#define IMX8MM_VPUH1_A53_DOMAIN			BIT(15)
#define IMX8MM_VPUG2_A53_DOMAIN			BIT(14)
#define IMX8MM_VPUG1_A53_DOMAIN			BIT(13)
#define IMX8MM_DISPMIX_A53_DOMAIN		BIT(12)
#define IMX8MM_VPUMIX_A53_DOMAIN		BIT(10)
#define IMX8MM_GPUMIX_A53_DOMAIN		BIT(9)
#define IMX8MM_GPU_A53_DOMAIN			(BIT(8) | BIT(11))
#define IMX8MM_DDR1_A53_DOMAIN			BIT(7)
#define IMX8MM_OTG2_A53_DOMAIN			BIT(5)
#define IMX8MM_OTG1_A53_DOMAIN			BIT(4)
#define IMX8MM_PCIE_A53_DOMAIN			BIT(3)
#define IMX8MM_MIPI_A53_DOMAIN			BIT(2)

#define IMX8MN_DISPMIX_A53_DOMAIN		BIT(12)
#define IMX8MN_GPUMIX_A53_DOMAIN		BIT(9)
#define IMX8MN_DDR1_A53_DOMAIN		BIT(7)
#define IMX8MN_OTG1_A53_DOMAIN		BIT(4)
#define IMX8MN_MIPI_A53_DOMAIN		BIT(2)

#define GPC_PU_PGC_SW_PUP_REQ		0x0f8
#define GPC_PU_PGC_SW_PDN_REQ		0x104

#define IMX7_USB_HSIC_PHY_SW_Pxx_REQ		BIT(4)
#define IMX7_USB_OTG2_PHY_SW_Pxx_REQ		BIT(3)
#define IMX7_USB_OTG1_PHY_SW_Pxx_REQ		BIT(2)
#define IMX7_PCIE_PHY_SW_Pxx_REQ		BIT(1)
#define IMX7_MIPI_PHY_SW_Pxx_REQ		BIT(0)

#define IMX8M_PCIE2_SW_Pxx_REQ			BIT(13)
#define IMX8M_MIPI_CSI2_SW_Pxx_REQ		BIT(12)
#define IMX8M_MIPI_CSI1_SW_Pxx_REQ		BIT(11)
#define IMX8M_DISP_SW_Pxx_REQ			BIT(10)
#define IMX8M_HDMI_SW_Pxx_REQ			BIT(9)
#define IMX8M_VPU_SW_Pxx_REQ			BIT(8)
#define IMX8M_GPU_SW_Pxx_REQ			BIT(7)
#define IMX8M_DDR2_SW_Pxx_REQ			BIT(6)
#define IMX8M_DDR1_SW_Pxx_REQ			BIT(5)
#define IMX8M_OTG2_SW_Pxx_REQ			BIT(3)
#define IMX8M_OTG1_SW_Pxx_REQ			BIT(2)
#define IMX8M_PCIE1_SW_Pxx_REQ			BIT(1)
#define IMX8M_MIPI_SW_Pxx_REQ			BIT(0)

#define IMX8MM_VPUH1_SW_Pxx_REQ			BIT(13)
#define IMX8MM_VPUG2_SW_Pxx_REQ			BIT(12)
#define IMX8MM_VPUG1_SW_Pxx_REQ			BIT(11)
#define IMX8MM_DISPMIX_SW_Pxx_REQ		BIT(10)
#define IMX8MM_VPUMIX_SW_Pxx_REQ		BIT(8)
#define IMX8MM_GPUMIX_SW_Pxx_REQ		BIT(7)
#define IMX8MM_GPU_SW_Pxx_REQ			(BIT(6) | BIT(9))
#define IMX8MM_DDR1_SW_Pxx_REQ			BIT(5)
#define IMX8MM_OTG2_SW_Pxx_REQ			BIT(3)
#define IMX8MM_OTG1_SW_Pxx_REQ			BIT(2)
#define IMX8MM_PCIE_SW_Pxx_REQ			BIT(1)
#define IMX8MM_MIPI_SW_Pxx_REQ			BIT(0)

#define IMX8MN_DISPMIX_SW_Pxx_REQ		BIT(10)
#define IMX8MN_GPUMIX_SW_Pxx_REQ		BIT(7)
#define IMX8MN_DDR1_SW_Pxx_REQ		BIT(5)
#define IMX8MN_OTG1_SW_Pxx_REQ		BIT(2)
#define IMX8MN_MIPI_SW_Pxx_REQ		BIT(0)

#define GPC_M4_PU_PDN_FLG		0x1bc

#define GPC_PU_PWRHSK			0x1fc

#define IMX8M_GPU_HSK_PWRDNACKN			BIT(26)
#define IMX8M_VPU_HSK_PWRDNACKN			BIT(25)
#define IMX8M_DISP_HSK_PWRDNACKN		BIT(24)
#define IMX8M_GPU_HSK_PWRDNREQN			BIT(6)
#define IMX8M_VPU_HSK_PWRDNREQN			BIT(5)
#define IMX8M_DISP_HSK_PWRDNREQN		BIT(4)


#define IMX8MM_GPUMIX_HSK_PWRDNACKN		BIT(29)
#define IMX8MM_GPU_HSK_PWRDNACKN		(BIT(27) | BIT(28))
#define IMX8MM_VPUMIX_HSK_PWRDNACKN		BIT(26)
#define IMX8MM_DISPMIX_HSK_PWRDNACKN		BIT(25)
#define IMX8MM_HSIO_HSK_PWRDNACKN		(BIT(23) | BIT(24))
#define IMX8MM_GPUMIX_HSK_PWRDNREQN		BIT(11)
#define IMX8MM_GPU_HSK_PWRDNREQN		(BIT(9) | BIT(10))
#define IMX8MM_VPUMIX_HSK_PWRDNREQN		BIT(8)
#define IMX8MM_DISPMIX_HSK_PWRDNREQN		BIT(7)
#define IMX8MM_HSIO_HSK_PWRDNREQN		(BIT(5) | BIT(6))

#define IMX8MN_GPUMIX_HSK_PWRDNACKN		(BIT(29) | BIT(27))
#define IMX8MN_DISPMIX_HSK_PWRDNACKN		BIT(25)
#define IMX8MN_HSIO_HSK_PWRDNACKN		BIT(23)
#define IMX8MN_GPUMIX_HSK_PWRDNREQN		(BIT(11) | BIT(9))
#define IMX8MN_DISPMIX_HSK_PWRDNREQN		BIT(7)
#define IMX8MN_HSIO_HSK_PWRDNREQN		BIT(5)

/*
 * The PGC offset values in Reference Manual
 * (Rev. 1, 01/2018 and the older ones) GPC chapter's
 * GPC_PGC memory map are incorrect, below offset
 * values are from design RTL.
 */
#define IMX7_PGC_MIPI			16
#define IMX7_PGC_PCIE			17
#define IMX7_PGC_USB_HSIC		20

#define IMX8M_PGC_MIPI			16
#define IMX8M_PGC_PCIE1			17
#define IMX8M_PGC_OTG1			18
#define IMX8M_PGC_OTG2			19
#define IMX8M_PGC_DDR1			21
#define IMX8M_PGC_GPU			23
#define IMX8M_PGC_VPU			24
#define IMX8M_PGC_DISP			26
#define IMX8M_PGC_MIPI_CSI1		27
#define IMX8M_PGC_MIPI_CSI2		28
#define IMX8M_PGC_PCIE2			29

#define IMX8MM_PGC_MIPI			16
#define IMX8MM_PGC_PCIE			17
#define IMX8MM_PGC_OTG1			18
#define IMX8MM_PGC_OTG2			19
#define IMX8MM_PGC_DDR1			21
#define IMX8MM_PGC_GPU2D		22
#define IMX8MM_PGC_GPUMIX		23
#define IMX8MM_PGC_VPUMIX		24
#define IMX8MM_PGC_GPU3D		25
#define IMX8MM_PGC_DISPMIX		26
#define IMX8MM_PGC_VPUG1		27
#define IMX8MM_PGC_VPUG2		28
#define IMX8MM_PGC_VPUH1		29

#define IMX8MN_PGC_MIPI		16
#define IMX8MN_PGC_OTG1		18
#define IMX8MN_PGC_DDR1		21
#define IMX8MN_PGC_GPUMIX		23
#define IMX8MN_PGC_DISPMIX		26

#define GPC_PGC_CTRL(n)			(0x800 + (n) * 0x40)
#define GPC_PGC_SR(n)			(GPC_PGC_CTRL(n) + 0xc)

#define GPC_PGC_CTRL_PCR		BIT(0)

struct imx_pgc_domain {
	struct generic_pm_domain genpd;
	struct regmap *regmap;
	struct regulator *regulator;
	struct reset_control *reset;
	struct clk_bulk_data *clks;
	int num_clks;

	unsigned long pgc;

	const struct {
		u32 pxx;
		u32 map;
		u32 hskreq;
		u32 hskack;
	} bits;

	const int voltage;
	const bool keep_clocks;
	struct device *dev;
};

struct imx_pgc_domain_data {
	const struct imx_pgc_domain *domains;
	size_t domains_num;
	const struct regmap_access_table *reg_access_table;
};

static inline struct imx_pgc_domain *
to_imx_pgc_domain(struct generic_pm_domain *genpd)
{
	return container_of(genpd, struct imx_pgc_domain, genpd);
}

static int imx_pgc_power_up(struct generic_pm_domain *genpd)
{
	struct imx_pgc_domain *domain = to_imx_pgc_domain(genpd);
	u32 reg_val, pgc;
	int ret;

	ret = pm_runtime_get_sync(domain->dev);
	if (ret < 0) {
		pm_runtime_put_noidle(domain->dev);
		return ret;
	}

	if (!IS_ERR(domain->regulator)) {
		ret = regulator_enable(domain->regulator);
		if (ret) {
			dev_err(domain->dev, "failed to enable regulator\n");
			goto out_put_pm;
		}
	}

	/* Enable reset clocks for all devices in the domain */
	ret = clk_bulk_prepare_enable(domain->num_clks, domain->clks);
	if (ret) {
		dev_err(domain->dev, "failed to enable reset clocks\n");
		goto out_regulator_disable;
	}

	reset_control_assert(domain->reset);

	if (domain->bits.pxx) {
		/* request the domain to power up */
		regmap_update_bits(domain->regmap, GPC_PU_PGC_SW_PUP_REQ,
				   domain->bits.pxx, domain->bits.pxx);
		/*
		 * As per "5.5.9.4 Example Code 4" in IMX7DRM.pdf wait
		 * for PUP_REQ/PDN_REQ bit to be cleared
		 */
		ret = regmap_read_poll_timeout(domain->regmap,
					       GPC_PU_PGC_SW_PUP_REQ, reg_val,
					       !(reg_val & domain->bits.pxx),
					       0, USEC_PER_MSEC);
		if (ret) {
			dev_err(domain->dev, "failed to command PGC\n");
			goto out_clk_disable;
		}

		/* disable power control */
		for_each_set_bit(pgc, &domain->pgc, 32) {
			regmap_clear_bits(domain->regmap, GPC_PGC_CTRL(pgc),
					  GPC_PGC_CTRL_PCR);
		}
	}

	/* delay for reset to propagate */
	udelay(5);

	reset_control_deassert(domain->reset);

	/* request the ADB400 to power up */
	if (domain->bits.hskreq) {
		regmap_update_bits(domain->regmap, GPC_PU_PWRHSK,
				   domain->bits.hskreq, domain->bits.hskreq);

		/*
		 * ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK, reg_val,
		 *				  (reg_val & domain->bits.hskack), 0,
		 *				  USEC_PER_MSEC);
		 * Technically we need the commented code to wait handshake. But that needs
		 * the BLK-CTL module BUS clk-en bit being set.
		 *
		 * There is a separate BLK-CTL module and we will have such a driver for it,
		 * that driver will set the BUS clk-en bit and handshake will be triggered
		 * automatically there. Just add a delay and suppose the handshake finish
		 * after that.
		 */
	}

	/* Disable reset clocks for all devices in the domain */
	if (!domain->keep_clocks)
		clk_bulk_disable_unprepare(domain->num_clks, domain->clks);

	return 0;

out_clk_disable:
	clk_bulk_disable_unprepare(domain->num_clks, domain->clks);
out_regulator_disable:
	if (!IS_ERR(domain->regulator))
		regulator_disable(domain->regulator);
out_put_pm:
	pm_runtime_put(domain->dev);

	return ret;
}

static int imx_pgc_power_down(struct generic_pm_domain *genpd)
{
	struct imx_pgc_domain *domain = to_imx_pgc_domain(genpd);
	u32 reg_val, pgc;
	int ret;

	/* Enable reset clocks for all devices in the domain */
	if (!domain->keep_clocks) {
		ret = clk_bulk_prepare_enable(domain->num_clks, domain->clks);
		if (ret) {
			dev_err(domain->dev, "failed to enable reset clocks\n");
			return ret;
		}
	}

	/* request the ADB400 to power down */
	if (domain->bits.hskreq) {
		regmap_clear_bits(domain->regmap, GPC_PU_PWRHSK,
				  domain->bits.hskreq);

		ret = regmap_read_poll_timeout(domain->regmap, GPC_PU_PWRHSK,
					       reg_val,
					       !(reg_val & domain->bits.hskack),
					       0, USEC_PER_MSEC);
		if (ret) {
			dev_err(domain->dev, "failed to power down ADB400\n");
			goto out_clk_disable;
		}
	}

	if (domain->bits.pxx) {
		/* enable power control */
		for_each_set_bit(pgc, &domain->pgc, 32) {
			regmap_update_bits(domain->regmap, GPC_PGC_CTRL(pgc),
					   GPC_PGC_CTRL_PCR, GPC_PGC_CTRL_PCR);
		}

		/* request the domain to power down */
		regmap_update_bits(domain->regmap, GPC_PU_PGC_SW_PDN_REQ,
				   domain->bits.pxx, domain->bits.pxx);
		/*
		 * As per "5.5.9.4 Example Code 4" in IMX7DRM.pdf wait
		 * for PUP_REQ/PDN_REQ bit to be cleared
		 */
		ret = regmap_read_poll_timeout(domain->regmap,
					       GPC_PU_PGC_SW_PDN_REQ, reg_val,
					       !(reg_val & domain->bits.pxx),
					       0, USEC_PER_MSEC);
		if (ret) {
			dev_err(domain->dev, "failed to command PGC\n");
			goto out_clk_disable;
		}
	}

	/* Disable reset clocks for all devices in the domain */
	clk_bulk_disable_unprepare(domain->num_clks, domain->clks);

	if (!IS_ERR(domain->regulator)) {
		ret = regulator_disable(domain->regulator);
		if (ret) {
			dev_err(domain->dev, "failed to disable regulator\n");
			return ret;
		}
	}

	pm_runtime_put_sync_suspend(domain->dev);

	return 0;

out_clk_disable:
	clk_bulk_disable_unprepare(domain->num_clks, domain->clks);

	return ret;
}

static const struct imx_pgc_domain imx7_pgc_domains[] = {
	[IMX7_POWER_DOMAIN_MIPI_PHY] = {
		.genpd = {
			.name      = "mipi-phy",
		},
		.bits  = {
			.pxx = IMX7_MIPI_PHY_SW_Pxx_REQ,
			.map = IMX7_MIPI_PHY_A_CORE_DOMAIN,
		},
		.voltage   = 1000000,
		.pgc	   = BIT(IMX7_PGC_MIPI),
	},

	[IMX7_POWER_DOMAIN_PCIE_PHY] = {
		.genpd = {
			.name      = "pcie-phy",
		},
		.bits  = {
			.pxx = IMX7_PCIE_PHY_SW_Pxx_REQ,
			.map = IMX7_PCIE_PHY_A_CORE_DOMAIN,
		},
		.voltage   = 1000000,
		.pgc	   = BIT(IMX7_PGC_PCIE),
	},

	[IMX7_POWER_DOMAIN_USB_HSIC_PHY] = {
		.genpd = {
			.name      = "usb-hsic-phy",
		},
		.bits  = {
			.pxx = IMX7_USB_HSIC_PHY_SW_Pxx_REQ,
			.map = IMX7_USB_HSIC_PHY_A_CORE_DOMAIN,
		},
		.voltage   = 1200000,
		.pgc	   = BIT(IMX7_PGC_USB_HSIC),
	},
};

static const struct regmap_range imx7_yes_ranges[] = {
		regmap_reg_range(GPC_LPCR_A_CORE_BSC,
				 GPC_M4_PU_PDN_FLG),
		regmap_reg_range(GPC_PGC_CTRL(IMX7_PGC_MIPI),
				 GPC_PGC_SR(IMX7_PGC_MIPI)),
		regmap_reg_range(GPC_PGC_CTRL(IMX7_PGC_PCIE),
				 GPC_PGC_SR(IMX7_PGC_PCIE)),
		regmap_reg_range(GPC_PGC_CTRL(IMX7_PGC_USB_HSIC),
				 GPC_PGC_SR(IMX7_PGC_USB_HSIC)),
};

static const struct regmap_access_table imx7_access_table = {
	.yes_ranges	= imx7_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(imx7_yes_ranges),
};

static const struct imx_pgc_domain_data imx7_pgc_domain_data = {
	.domains = imx7_pgc_domains,
	.domains_num = ARRAY_SIZE(imx7_pgc_domains),
	.reg_access_table = &imx7_access_table,
};

static const struct imx_pgc_domain imx8m_pgc_domains[] = {
	[IMX8M_POWER_DOMAIN_MIPI] = {
		.genpd = {
			.name      = "mipi",
		},
		.bits  = {
			.pxx = IMX8M_MIPI_SW_Pxx_REQ,
			.map = IMX8M_MIPI_A53_DOMAIN,
		},
		.pgc	   = BIT(IMX8M_PGC_MIPI),
	},

	[IMX8M_POWER_DOMAIN_PCIE1] = {
		.genpd = {
			.name = "pcie1",
		},
		.bits  = {
			.pxx = IMX8M_PCIE1_SW_Pxx_REQ,
			.map = IMX8M_PCIE1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_PCIE1),
	},

	[IMX8M_POWER_DOMAIN_USB_OTG1] = {
		.genpd = {
			.name = "usb-otg1",
		},
		.bits  = {
			.pxx = IMX8M_OTG1_SW_Pxx_REQ,
			.map = IMX8M_OTG1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_OTG1),
	},

	[IMX8M_POWER_DOMAIN_USB_OTG2] = {
		.genpd = {
			.name = "usb-otg2",
		},
		.bits  = {
			.pxx = IMX8M_OTG2_SW_Pxx_REQ,
			.map = IMX8M_OTG2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_OTG2),
	},

	[IMX8M_POWER_DOMAIN_DDR1] = {
		.genpd = {
			.name = "ddr1",
		},
		.bits  = {
			.pxx = IMX8M_DDR1_SW_Pxx_REQ,
			.map = IMX8M_DDR2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_DDR1),
	},

	[IMX8M_POWER_DOMAIN_GPU] = {
		.genpd = {
			.name = "gpu",
		},
		.bits  = {
			.pxx = IMX8M_GPU_SW_Pxx_REQ,
			.map = IMX8M_GPU_A53_DOMAIN,
			.hskreq = IMX8M_GPU_HSK_PWRDNREQN,
			.hskack = IMX8M_GPU_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8M_PGC_GPU),
	},

	[IMX8M_POWER_DOMAIN_VPU] = {
		.genpd = {
			.name = "vpu",
		},
		.bits  = {
			.pxx = IMX8M_VPU_SW_Pxx_REQ,
			.map = IMX8M_VPU_A53_DOMAIN,
			.hskreq = IMX8M_VPU_HSK_PWRDNREQN,
			.hskack = IMX8M_VPU_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8M_PGC_VPU),
		.keep_clocks = true,
	},

	[IMX8M_POWER_DOMAIN_DISP] = {
		.genpd = {
			.name = "disp",
		},
		.bits  = {
			.pxx = IMX8M_DISP_SW_Pxx_REQ,
			.map = IMX8M_DISP_A53_DOMAIN,
			.hskreq = IMX8M_DISP_HSK_PWRDNREQN,
			.hskack = IMX8M_DISP_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8M_PGC_DISP),
	},

	[IMX8M_POWER_DOMAIN_MIPI_CSI1] = {
		.genpd = {
			.name = "mipi-csi1",
		},
		.bits  = {
			.pxx = IMX8M_MIPI_CSI1_SW_Pxx_REQ,
			.map = IMX8M_MIPI_CSI1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_MIPI_CSI1),
	},

	[IMX8M_POWER_DOMAIN_MIPI_CSI2] = {
		.genpd = {
			.name = "mipi-csi2",
		},
		.bits  = {
			.pxx = IMX8M_MIPI_CSI2_SW_Pxx_REQ,
			.map = IMX8M_MIPI_CSI2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_MIPI_CSI2),
	},

	[IMX8M_POWER_DOMAIN_PCIE2] = {
		.genpd = {
			.name = "pcie2",
		},
		.bits  = {
			.pxx = IMX8M_PCIE2_SW_Pxx_REQ,
			.map = IMX8M_PCIE2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8M_PGC_PCIE2),
	},
};

static const struct regmap_range imx8m_yes_ranges[] = {
		regmap_reg_range(GPC_LPCR_A_CORE_BSC,
				 GPC_PU_PWRHSK),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_MIPI),
				 GPC_PGC_SR(IMX8M_PGC_MIPI)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_PCIE1),
				 GPC_PGC_SR(IMX8M_PGC_PCIE1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_OTG1),
				 GPC_PGC_SR(IMX8M_PGC_OTG1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_OTG2),
				 GPC_PGC_SR(IMX8M_PGC_OTG2)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_DDR1),
				 GPC_PGC_SR(IMX8M_PGC_DDR1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_GPU),
				 GPC_PGC_SR(IMX8M_PGC_GPU)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_VPU),
				 GPC_PGC_SR(IMX8M_PGC_VPU)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_DISP),
				 GPC_PGC_SR(IMX8M_PGC_DISP)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_MIPI_CSI1),
				 GPC_PGC_SR(IMX8M_PGC_MIPI_CSI1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_MIPI_CSI2),
				 GPC_PGC_SR(IMX8M_PGC_MIPI_CSI2)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8M_PGC_PCIE2),
				 GPC_PGC_SR(IMX8M_PGC_PCIE2)),
};

static const struct regmap_access_table imx8m_access_table = {
	.yes_ranges	= imx8m_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(imx8m_yes_ranges),
};

static const struct imx_pgc_domain_data imx8m_pgc_domain_data = {
	.domains = imx8m_pgc_domains,
	.domains_num = ARRAY_SIZE(imx8m_pgc_domains),
	.reg_access_table = &imx8m_access_table,
};

static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
	[IMX8MM_POWER_DOMAIN_HSIOMIX] = {
		.genpd = {
			.name = "hsiomix",
		},
		.bits  = {
			.pxx = 0, /* no power sequence control */
			.map = 0, /* no power sequence control */
			.hskreq = IMX8MM_HSIO_HSK_PWRDNREQN,
			.hskack = IMX8MM_HSIO_HSK_PWRDNACKN,
		},
		.keep_clocks = true,
	},

	[IMX8MM_POWER_DOMAIN_PCIE] = {
		.genpd = {
			.name = "pcie",
		},
		.bits  = {
			.pxx = IMX8MM_PCIE_SW_Pxx_REQ,
			.map = IMX8MM_PCIE_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_PCIE),
	},

	[IMX8MM_POWER_DOMAIN_OTG1] = {
		.genpd = {
			.name = "usb-otg1",
		},
		.bits  = {
			.pxx = IMX8MM_OTG1_SW_Pxx_REQ,
			.map = IMX8MM_OTG1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_OTG1),
	},

	[IMX8MM_POWER_DOMAIN_OTG2] = {
		.genpd = {
			.name = "usb-otg2",
		},
		.bits  = {
			.pxx = IMX8MM_OTG2_SW_Pxx_REQ,
			.map = IMX8MM_OTG2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_OTG2),
	},

	[IMX8MM_POWER_DOMAIN_GPUMIX] = {
		.genpd = {
			.name = "gpumix",
		},
		.bits  = {
			.pxx = IMX8MM_GPUMIX_SW_Pxx_REQ,
			.map = IMX8MM_GPUMIX_A53_DOMAIN,
			.hskreq = IMX8MM_GPUMIX_HSK_PWRDNREQN,
			.hskack = IMX8MM_GPUMIX_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MM_PGC_GPUMIX),
		.keep_clocks = true,
	},

	[IMX8MM_POWER_DOMAIN_GPU] = {
		.genpd = {
			.name = "gpu",
		},
		.bits  = {
			.pxx = IMX8MM_GPU_SW_Pxx_REQ,
			.map = IMX8MM_GPU_A53_DOMAIN,
			.hskreq = IMX8MM_GPU_HSK_PWRDNREQN,
			.hskack = IMX8MM_GPU_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MM_PGC_GPU2D) | BIT(IMX8MM_PGC_GPU3D),
	},

	[IMX8MM_POWER_DOMAIN_VPUMIX] = {
		.genpd = {
			.name = "vpumix",
		},
		.bits  = {
			.pxx = IMX8MM_VPUMIX_SW_Pxx_REQ,
			.map = IMX8MM_VPUMIX_A53_DOMAIN,
			.hskreq = IMX8MM_VPUMIX_HSK_PWRDNREQN,
			.hskack = IMX8MM_VPUMIX_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MM_PGC_VPUMIX),
		.keep_clocks = true,
	},

	[IMX8MM_POWER_DOMAIN_VPUG1] = {
		.genpd = {
			.name = "vpu-g1",
		},
		.bits  = {
			.pxx = IMX8MM_VPUG1_SW_Pxx_REQ,
			.map = IMX8MM_VPUG1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_VPUG1),
	},

	[IMX8MM_POWER_DOMAIN_VPUG2] = {
		.genpd = {
			.name = "vpu-g2",
		},
		.bits  = {
			.pxx = IMX8MM_VPUG2_SW_Pxx_REQ,
			.map = IMX8MM_VPUG2_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_VPUG2),
	},

	[IMX8MM_POWER_DOMAIN_VPUH1] = {
		.genpd = {
			.name = "vpu-h1",
		},
		.bits  = {
			.pxx = IMX8MM_VPUH1_SW_Pxx_REQ,
			.map = IMX8MM_VPUH1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_VPUH1),
		.keep_clocks = true,
	},

	[IMX8MM_POWER_DOMAIN_DISPMIX] = {
		.genpd = {
			.name = "dispmix",
		},
		.bits  = {
			.pxx = IMX8MM_DISPMIX_SW_Pxx_REQ,
			.map = IMX8MM_DISPMIX_A53_DOMAIN,
			.hskreq = IMX8MM_DISPMIX_HSK_PWRDNREQN,
			.hskack = IMX8MM_DISPMIX_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MM_PGC_DISPMIX),
		.keep_clocks = true,
	},

	[IMX8MM_POWER_DOMAIN_MIPI] = {
		.genpd = {
			.name = "mipi",
		},
		.bits  = {
			.pxx = IMX8MM_MIPI_SW_Pxx_REQ,
			.map = IMX8MM_MIPI_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MM_PGC_MIPI),
	},
};

static const struct regmap_range imx8mm_yes_ranges[] = {
		regmap_reg_range(GPC_LPCR_A_CORE_BSC,
				 GPC_PU_PWRHSK),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_MIPI),
				 GPC_PGC_SR(IMX8MM_PGC_MIPI)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_PCIE),
				 GPC_PGC_SR(IMX8MM_PGC_PCIE)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_OTG1),
				 GPC_PGC_SR(IMX8MM_PGC_OTG1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_OTG2),
				 GPC_PGC_SR(IMX8MM_PGC_OTG2)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_DDR1),
				 GPC_PGC_SR(IMX8MM_PGC_DDR1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_GPU2D),
				 GPC_PGC_SR(IMX8MM_PGC_GPU2D)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_GPUMIX),
				 GPC_PGC_SR(IMX8MM_PGC_GPUMIX)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_VPUMIX),
				 GPC_PGC_SR(IMX8MM_PGC_VPUMIX)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_GPU3D),
				 GPC_PGC_SR(IMX8MM_PGC_GPU3D)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_DISPMIX),
				 GPC_PGC_SR(IMX8MM_PGC_DISPMIX)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_VPUG1),
				 GPC_PGC_SR(IMX8MM_PGC_VPUG1)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_VPUG2),
				 GPC_PGC_SR(IMX8MM_PGC_VPUG2)),
		regmap_reg_range(GPC_PGC_CTRL(IMX8MM_PGC_VPUH1),
				 GPC_PGC_SR(IMX8MM_PGC_VPUH1)),
};

static const struct regmap_access_table imx8mm_access_table = {
	.yes_ranges	= imx8mm_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(imx8mm_yes_ranges),
};

static const struct imx_pgc_domain_data imx8mm_pgc_domain_data = {
	.domains = imx8mm_pgc_domains,
	.domains_num = ARRAY_SIZE(imx8mm_pgc_domains),
	.reg_access_table = &imx8mm_access_table,
};

static const struct imx_pgc_domain imx8mn_pgc_domains[] = {
	[IMX8MN_POWER_DOMAIN_HSIOMIX] = {
		.genpd = {
			.name = "hsiomix",
		},
		.bits  = {
			.pxx = 0, /* no power sequence control */
			.map = 0, /* no power sequence control */
			.hskreq = IMX8MN_HSIO_HSK_PWRDNREQN,
			.hskack = IMX8MN_HSIO_HSK_PWRDNACKN,
		},
		.keep_clocks = true,
	},

	[IMX8MN_POWER_DOMAIN_OTG1] = {
		.genpd = {
			.name = "usb-otg1",
		},
		.bits  = {
			.pxx = IMX8MN_OTG1_SW_Pxx_REQ,
			.map = IMX8MN_OTG1_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MN_PGC_OTG1),
	},

	[IMX8MN_POWER_DOMAIN_GPUMIX] = {
		.genpd = {
			.name = "gpumix",
		},
		.bits  = {
			.pxx = IMX8MN_GPUMIX_SW_Pxx_REQ,
			.map = IMX8MN_GPUMIX_A53_DOMAIN,
			.hskreq = IMX8MN_GPUMIX_HSK_PWRDNREQN,
			.hskack = IMX8MN_GPUMIX_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MN_PGC_GPUMIX),
		.keep_clocks = true,
	},

	[IMX8MN_POWER_DOMAIN_DISPMIX] = {
		.genpd = {
			.name = "dispmix",
		},
			.bits  = {
			.pxx = IMX8MN_DISPMIX_SW_Pxx_REQ,
			.map = IMX8MN_DISPMIX_A53_DOMAIN,
			.hskreq = IMX8MN_DISPMIX_HSK_PWRDNREQN,
			.hskack = IMX8MN_DISPMIX_HSK_PWRDNACKN,
		},
		.pgc   = BIT(IMX8MN_PGC_DISPMIX),
		.keep_clocks = true,
	},

	[IMX8MN_POWER_DOMAIN_MIPI] = {
		.genpd = {
			.name = "mipi",
		},
			.bits  = {
			.pxx = IMX8MN_MIPI_SW_Pxx_REQ,
			.map = IMX8MN_MIPI_A53_DOMAIN,
		},
		.pgc   = BIT(IMX8MN_PGC_MIPI),
	},
};

static const struct regmap_range imx8mn_yes_ranges[] = {
	regmap_reg_range(GPC_LPCR_A_CORE_BSC,
			 GPC_PU_PWRHSK),
	regmap_reg_range(GPC_PGC_CTRL(IMX8MN_PGC_MIPI),
			 GPC_PGC_SR(IMX8MN_PGC_MIPI)),
	regmap_reg_range(GPC_PGC_CTRL(IMX8MN_PGC_OTG1),
			 GPC_PGC_SR(IMX8MN_PGC_OTG1)),
	regmap_reg_range(GPC_PGC_CTRL(IMX8MN_PGC_DDR1),
			 GPC_PGC_SR(IMX8MN_PGC_DDR1)),
	regmap_reg_range(GPC_PGC_CTRL(IMX8MN_PGC_GPUMIX),
			 GPC_PGC_SR(IMX8MN_PGC_GPUMIX)),
	regmap_reg_range(GPC_PGC_CTRL(IMX8MN_PGC_DISPMIX),
			 GPC_PGC_SR(IMX8MN_PGC_DISPMIX)),
};

static const struct regmap_access_table imx8mn_access_table = {
	.yes_ranges	= imx8mn_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(imx8mn_yes_ranges),
};

static const struct imx_pgc_domain_data imx8mn_pgc_domain_data = {
	.domains = imx8mn_pgc_domains,
	.domains_num = ARRAY_SIZE(imx8mn_pgc_domains),
	.reg_access_table = &imx8mn_access_table,
};

static int imx_pgc_domain_probe(struct platform_device *pdev)
{
	struct imx_pgc_domain *domain = pdev->dev.platform_data;
	int ret;

	domain->dev = &pdev->dev;

	domain->regulator = devm_regulator_get_optional(domain->dev, "power");
	if (IS_ERR(domain->regulator)) {
		if (PTR_ERR(domain->regulator) != -ENODEV)
			return dev_err_probe(domain->dev, PTR_ERR(domain->regulator),
					     "Failed to get domain's regulator\n");
	} else if (domain->voltage) {
		regulator_set_voltage(domain->regulator,
				      domain->voltage, domain->voltage);
	}

	domain->num_clks = devm_clk_bulk_get_all(domain->dev, &domain->clks);
	if (domain->num_clks < 0)
		return dev_err_probe(domain->dev, domain->num_clks,
				     "Failed to get domain's clocks\n");

	domain->reset = devm_reset_control_array_get_optional_exclusive(domain->dev);
	if (IS_ERR(domain->reset))
		return dev_err_probe(domain->dev, PTR_ERR(domain->reset),
				     "Failed to get domain's resets\n");

	pm_runtime_enable(domain->dev);

	if (domain->bits.map)
		regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING,
				   domain->bits.map, domain->bits.map);

	ret = pm_genpd_init(&domain->genpd, NULL, true);
	if (ret) {
		dev_err(domain->dev, "Failed to init power domain\n");
		goto out_domain_unmap;
	}

	if (IS_ENABLED(CONFIG_LOCKDEP) &&
	    of_property_read_bool(domain->dev->of_node, "power-domains"))
		lockdep_set_subclass(&domain->genpd.mlock, 1);

	ret = of_genpd_add_provider_simple(domain->dev->of_node,
					   &domain->genpd);
	if (ret) {
		dev_err(domain->dev, "Failed to add genpd provider\n");
		goto out_genpd_remove;
	}

	return 0;

out_genpd_remove:
	pm_genpd_remove(&domain->genpd);
out_domain_unmap:
	if (domain->bits.map)
		regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING,
				   domain->bits.map, 0);
	pm_runtime_disable(domain->dev);

	return ret;
}

static int imx_pgc_domain_remove(struct platform_device *pdev)
{
	struct imx_pgc_domain *domain = pdev->dev.platform_data;

	of_genpd_del_provider(domain->dev->of_node);
	pm_genpd_remove(&domain->genpd);

	if (domain->bits.map)
		regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING,
				   domain->bits.map, 0);

	pm_runtime_disable(domain->dev);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int imx_pgc_domain_suspend(struct device *dev)
{
	int ret;

	/*
	 * This may look strange, but is done so the generic PM_SLEEP code
	 * can power down our domain and more importantly power it up again
	 * after resume, without tripping over our usage of runtime PM to
	 * power up/down the nested domains.
	 */
	ret = pm_runtime_get_sync(dev);
	if (ret < 0) {
		pm_runtime_put_noidle(dev);
		return ret;
	}

	return 0;
}

static int imx_pgc_domain_resume(struct device *dev)
{
	return pm_runtime_put(dev);
}
#endif

static const struct dev_pm_ops imx_pgc_domain_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(imx_pgc_domain_suspend, imx_pgc_domain_resume)
};

static const struct platform_device_id imx_pgc_domain_id[] = {
	{ "imx-pgc-domain", },
	{ },
};

static struct platform_driver imx_pgc_domain_driver = {
	.driver = {
		.name = "imx-pgc",
		.pm = &imx_pgc_domain_pm_ops,
	},
	.probe    = imx_pgc_domain_probe,
	.remove   = imx_pgc_domain_remove,
	.id_table = imx_pgc_domain_id,
};
builtin_platform_driver(imx_pgc_domain_driver)

static int imx_gpcv2_probe(struct platform_device *pdev)
{
	const struct imx_pgc_domain_data *domain_data =
			of_device_get_match_data(&pdev->dev);

	struct regmap_config regmap_config = {
		.reg_bits	= 32,
		.val_bits	= 32,
		.reg_stride	= 4,
		.rd_table	= domain_data->reg_access_table,
		.wr_table	= domain_data->reg_access_table,
		.max_register   = SZ_4K,
	};
	struct device *dev = &pdev->dev;
	struct device_node *pgc_np, *np;
	struct regmap *regmap;
	void __iomem *base;
	int ret;

	pgc_np = of_get_child_by_name(dev->of_node, "pgc");
	if (!pgc_np) {
		dev_err(dev, "No power domains specified in DT\n");
		return -EINVAL;
	}

	base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(base))
		return PTR_ERR(base);

	regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
	if (IS_ERR(regmap)) {
		ret = PTR_ERR(regmap);
		dev_err(dev, "failed to init regmap (%d)\n", ret);
		return ret;
	}

	for_each_child_of_node(pgc_np, np) {
		struct platform_device *pd_pdev;
		struct imx_pgc_domain *domain;
		u32 domain_index;

		if (!of_device_is_available(np))
			continue;

		ret = of_property_read_u32(np, "reg", &domain_index);
		if (ret) {
			dev_err(dev, "Failed to read 'reg' property\n");
			of_node_put(np);
			return ret;
		}

		if (domain_index >= domain_data->domains_num) {
			dev_warn(dev,
				 "Domain index %d is out of bounds\n",
				 domain_index);
			continue;
		}

		pd_pdev = platform_device_alloc("imx-pgc-domain",
						domain_index);
		if (!pd_pdev) {
			dev_err(dev, "Failed to allocate platform device\n");
			of_node_put(np);
			return -ENOMEM;
		}

		ret = platform_device_add_data(pd_pdev,
					       &domain_data->domains[domain_index],
					       sizeof(domain_data->domains[domain_index]));
		if (ret) {
			platform_device_put(pd_pdev);
			of_node_put(np);
			return ret;
		}

		domain = pd_pdev->dev.platform_data;
		domain->regmap = regmap;
		domain->genpd.power_on  = imx_pgc_power_up;
		domain->genpd.power_off = imx_pgc_power_down;

		pd_pdev->dev.parent = dev;
		pd_pdev->dev.of_node = np;

		ret = platform_device_add(pd_pdev);
		if (ret) {
			platform_device_put(pd_pdev);
			of_node_put(np);
			return ret;
		}
	}

	return 0;
}

static const struct of_device_id imx_gpcv2_dt_ids[] = {
	{ .compatible = "fsl,imx7d-gpc", .data = &imx7_pgc_domain_data, },
	{ .compatible = "fsl,imx8mm-gpc", .data = &imx8mm_pgc_domain_data, },
	{ .compatible = "fsl,imx8mn-gpc", .data = &imx8mn_pgc_domain_data, },
	{ .compatible = "fsl,imx8mq-gpc", .data = &imx8m_pgc_domain_data, },
	{ }
};

static struct platform_driver imx_gpc_driver = {
	.driver = {
		.name = "imx-gpcv2",
		.of_match_table = imx_gpcv2_dt_ids,
	},
	.probe = imx_gpcv2_probe,
};
builtin_platform_driver(imx_gpc_driver)