summaryrefslogtreecommitdiff
path: root/drivers/phy/phy-miphy365x.c
blob: ba6993da91fe0624d4c188b86c71020f60ccaf86 (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
/*
 * Copyright (C) 2014 STMicroelectronics – All Rights Reserved
 *
 * STMicroelectronics PHY driver MiPHY365 (for SoC STiH416).
 *
 * Authors: Alexandre Torgue <alexandre.torgue@st.com>
 *          Lee Jones <lee.jones@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2, as
 * published by the Free Software Foundation.
 *
 */

#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/clk.h>
#include <linux/phy/phy.h>
#include <linux/delay.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>

#include <dt-bindings/phy/phy.h>

#define HFC_TIMEOUT		100

#define SYSCFG_SELECT_SATA_MASK	BIT(1)
#define SYSCFG_SELECT_SATA_POS	1

/* MiPHY365x register definitions */
#define RESET_REG		0x00
#define RST_PLL			BIT(1)
#define RST_PLL_CAL		BIT(2)
#define RST_RX			BIT(4)
#define RST_MACRO		BIT(7)

#define STATUS_REG		0x01
#define IDLL_RDY		BIT(0)
#define PLL_RDY			BIT(1)
#define DES_BIT_LOCK		BIT(2)
#define DES_SYMBOL_LOCK		BIT(3)

#define CTRL_REG		0x02
#define TERM_EN			BIT(0)
#define PCI_EN			BIT(2)
#define DES_BIT_LOCK_EN		BIT(3)
#define TX_POL			BIT(5)

#define INT_CTRL_REG		0x03

#define BOUNDARY1_REG		0x10
#define SPDSEL_SEL		BIT(0)

#define BOUNDARY3_REG		0x12
#define TX_SPDSEL_GEN1_VAL	0
#define TX_SPDSEL_GEN2_VAL	0x01
#define TX_SPDSEL_GEN3_VAL	0x02
#define RX_SPDSEL_GEN1_VAL	0
#define RX_SPDSEL_GEN2_VAL	(0x01 << 3)
#define RX_SPDSEL_GEN3_VAL	(0x02 << 3)

#define PCIE_REG		0x16

#define BUF_SEL_REG		0x20
#define CONF_GEN_SEL_GEN3	0x02
#define CONF_GEN_SEL_GEN2	0x01
#define PD_VDDTFILTER		BIT(4)

#define TXBUF1_REG		0x21
#define SWING_VAL		0x04
#define SWING_VAL_GEN1		0x03
#define PREEMPH_VAL		(0x3 << 5)

#define TXBUF2_REG		0x22
#define TXSLEW_VAL		0x2
#define TXSLEW_VAL_GEN1		0x4

#define RXBUF_OFFSET_CTRL_REG	0x23

#define RXBUF_REG		0x25
#define SDTHRES_VAL		0x01
#define EQ_ON3			(0x03 << 4)
#define EQ_ON1			(0x01 << 4)

#define COMP_CTRL1_REG		0x40
#define START_COMSR		BIT(0)
#define START_COMZC		BIT(1)
#define COMSR_DONE		BIT(2)
#define COMZC_DONE		BIT(3)
#define COMP_AUTO_LOAD		BIT(4)

#define COMP_CTRL2_REG		0x41
#define COMP_2MHZ_RAT_GEN1	0x1e
#define COMP_2MHZ_RAT		0xf

#define COMP_CTRL3_REG		0x42
#define COMSR_COMP_REF		0x33

#define COMP_IDLL_REG		0x47
#define COMZC_IDLL		0x2a

#define PLL_CTRL1_REG		0x50
#define PLL_START_CAL		BIT(0)
#define BUF_EN			BIT(2)
#define SYNCHRO_TX		BIT(3)
#define SSC_EN			BIT(6)
#define CONFIG_PLL		BIT(7)

#define PLL_CTRL2_REG		0x51
#define BYPASS_PLL_CAL		BIT(1)

#define PLL_RAT_REG		0x52

#define PLL_SSC_STEP_MSB_REG	0x56
#define PLL_SSC_STEP_MSB_VAL	0x03

#define PLL_SSC_STEP_LSB_REG	0x57
#define PLL_SSC_STEP_LSB_VAL	0x63

#define PLL_SSC_PER_MSB_REG	0x58
#define PLL_SSC_PER_MSB_VAL	0

#define PLL_SSC_PER_LSB_REG	0x59
#define PLL_SSC_PER_LSB_VAL	0xf1

#define IDLL_TEST_REG		0x72
#define START_CLK_HF		BIT(6)

#define DES_BITLOCK_REG		0x86
#define BIT_LOCK_LEVEL		0x01
#define BIT_LOCK_CNT_512	(0x03 << 5)

struct miphy365x_phy {
	struct phy *phy;
	void __iomem *base;
	bool pcie_tx_pol_inv;
	bool sata_tx_pol_inv;
	u32 sata_gen;
	u32 ctrlreg;
	u8 type;
};

struct miphy365x_dev {
	struct device *dev;
	struct regmap *regmap;
	struct mutex miphy_mutex;
	struct miphy365x_phy **phys;
	int nphys;
};

/*
 * These values are represented in Device tree. They are considered to be ABI
 * and although they can be extended any existing values must not change.
 */
enum miphy_sata_gen {
	SATA_GEN1 = 1,
	SATA_GEN2,
	SATA_GEN3
};

static u8 rx_tx_spd[] = {
	0, /* GEN0 doesn't exist. */
	TX_SPDSEL_GEN1_VAL | RX_SPDSEL_GEN1_VAL,
	TX_SPDSEL_GEN2_VAL | RX_SPDSEL_GEN2_VAL,
	TX_SPDSEL_GEN3_VAL | RX_SPDSEL_GEN3_VAL
};

/*
 * This function selects the system configuration,
 * either two SATA, one SATA and one PCIe, or two PCIe lanes.
 */
static int miphy365x_set_path(struct miphy365x_phy *miphy_phy,
			      struct miphy365x_dev *miphy_dev)
{
	bool sata = (miphy_phy->type == PHY_TYPE_SATA);

	return regmap_update_bits(miphy_dev->regmap,
				  miphy_phy->ctrlreg,
				  SYSCFG_SELECT_SATA_MASK,
				  sata << SYSCFG_SELECT_SATA_POS);
}

static int miphy365x_init_pcie_port(struct miphy365x_phy *miphy_phy,
				    struct miphy365x_dev *miphy_dev)
{
	u8 val;

	if (miphy_phy->pcie_tx_pol_inv) {
		/* Invert Tx polarity and clear pci_txdetect_pol bit */
		val = TERM_EN | PCI_EN | DES_BIT_LOCK_EN | TX_POL;
		writeb_relaxed(val, miphy_phy->base + CTRL_REG);
		writeb_relaxed(0x00, miphy_phy->base + PCIE_REG);
	}

	return 0;
}

static inline int miphy365x_hfc_not_rdy(struct miphy365x_phy *miphy_phy,
					struct miphy365x_dev *miphy_dev)
{
	unsigned long timeout = jiffies + msecs_to_jiffies(HFC_TIMEOUT);
	u8 mask = IDLL_RDY | PLL_RDY;
	u8 regval;

	do {
		regval = readb_relaxed(miphy_phy->base + STATUS_REG);
		if (!(regval & mask))
			return 0;

		usleep_range(2000, 2500);
	} while (time_before(jiffies, timeout));

	dev_err(miphy_dev->dev, "HFC ready timeout!\n");
	return -EBUSY;
}

static inline int miphy365x_rdy(struct miphy365x_phy *miphy_phy,
				struct miphy365x_dev *miphy_dev)
{
	unsigned long timeout = jiffies + msecs_to_jiffies(HFC_TIMEOUT);
	u8 mask = IDLL_RDY | PLL_RDY;
	u8 regval;

	do {
		regval = readb_relaxed(miphy_phy->base + STATUS_REG);
		if ((regval & mask) == mask)
			return 0;

		usleep_range(2000, 2500);
	} while (time_before(jiffies, timeout));

	dev_err(miphy_dev->dev, "PHY not ready timeout!\n");
	return -EBUSY;
}

static inline void miphy365x_set_comp(struct miphy365x_phy *miphy_phy,
				      struct miphy365x_dev *miphy_dev)
{
	u8 val, mask;

	if (miphy_phy->sata_gen == SATA_GEN1)
		writeb_relaxed(COMP_2MHZ_RAT_GEN1,
			       miphy_phy->base + COMP_CTRL2_REG);
	else
		writeb_relaxed(COMP_2MHZ_RAT,
			       miphy_phy->base + COMP_CTRL2_REG);

	if (miphy_phy->sata_gen != SATA_GEN3) {
		writeb_relaxed(COMSR_COMP_REF,
			       miphy_phy->base + COMP_CTRL3_REG);
		/*
		 * Force VCO current to value defined by address 0x5A
		 * and disable PCIe100Mref bit
		 * Enable auto load compensation for pll_i_bias
		 */
		writeb_relaxed(BYPASS_PLL_CAL, miphy_phy->base + PLL_CTRL2_REG);
		writeb_relaxed(COMZC_IDLL, miphy_phy->base + COMP_IDLL_REG);
	}

	/*
	 * Force restart compensation and enable auto load
	 * for Comzc_Tx, Comzc_Rx and Comsr on macro
	 */
	val = START_COMSR | START_COMZC | COMP_AUTO_LOAD;
	writeb_relaxed(val, miphy_phy->base + COMP_CTRL1_REG);

	mask = COMSR_DONE | COMZC_DONE;
	while ((readb_relaxed(miphy_phy->base + COMP_CTRL1_REG) & mask)	!= mask)
		cpu_relax();
}

static inline void miphy365x_set_ssc(struct miphy365x_phy *miphy_phy,
				     struct miphy365x_dev *miphy_dev)
{
	u8 val;

	/*
	 * SSC Settings. SSC will be enabled through Link
	 * SSC Ampl. = 0.4%
	 * SSC Freq = 31KHz
	 */
	writeb_relaxed(PLL_SSC_STEP_MSB_VAL,
		       miphy_phy->base + PLL_SSC_STEP_MSB_REG);
	writeb_relaxed(PLL_SSC_STEP_LSB_VAL,
		       miphy_phy->base + PLL_SSC_STEP_LSB_REG);
	writeb_relaxed(PLL_SSC_PER_MSB_VAL,
		       miphy_phy->base + PLL_SSC_PER_MSB_REG);
	writeb_relaxed(PLL_SSC_PER_LSB_VAL,
		       miphy_phy->base + PLL_SSC_PER_LSB_REG);

	/* SSC Settings complete */
	if (miphy_phy->sata_gen == SATA_GEN1) {
		val = PLL_START_CAL | BUF_EN | SYNCHRO_TX | CONFIG_PLL;
		writeb_relaxed(val, miphy_phy->base + PLL_CTRL1_REG);
	} else {
		val = SSC_EN | PLL_START_CAL | BUF_EN | SYNCHRO_TX | CONFIG_PLL;
		writeb_relaxed(val, miphy_phy->base + PLL_CTRL1_REG);
	}
}

static int miphy365x_init_sata_port(struct miphy365x_phy *miphy_phy,
				    struct miphy365x_dev *miphy_dev)
{
	int ret;
	u8 val;

	/*
	 * Force PHY macro reset, PLL calibration reset, PLL reset
	 * and assert Deserializer Reset
	 */
	val = RST_PLL | RST_PLL_CAL | RST_RX | RST_MACRO;
	writeb_relaxed(val, miphy_phy->base + RESET_REG);

	if (miphy_phy->sata_tx_pol_inv)
		writeb_relaxed(TX_POL, miphy_phy->base + CTRL_REG);

	/*
	 * Force macro1 to use rx_lspd, tx_lspd
	 * Force Rx_Clock on first I-DLL phase
	 * Force Des in HP mode on macro, rx_lspd, tx_lspd for Gen2/3
	 */
	writeb_relaxed(SPDSEL_SEL, miphy_phy->base + BOUNDARY1_REG);
	writeb_relaxed(START_CLK_HF, miphy_phy->base + IDLL_TEST_REG);
	val = rx_tx_spd[miphy_phy->sata_gen];
	writeb_relaxed(val, miphy_phy->base + BOUNDARY3_REG);

	/* Wait for HFC_READY = 0 */
	ret = miphy365x_hfc_not_rdy(miphy_phy, miphy_dev);
	if (ret)
		return ret;

	/* Compensation Recalibration */
	miphy365x_set_comp(miphy_phy, miphy_dev);

	switch (miphy_phy->sata_gen) {
	case SATA_GEN3:
		/*
		 * TX Swing target 550-600mv peak to peak diff
		 * Tx Slew target 90-110ps rising/falling time
		 * Rx Eq ON3, Sigdet threshold SDTH1
		 */
		val = PD_VDDTFILTER | CONF_GEN_SEL_GEN3;
		writeb_relaxed(val, miphy_phy->base + BUF_SEL_REG);
		val = SWING_VAL | PREEMPH_VAL;
		writeb_relaxed(val, miphy_phy->base + TXBUF1_REG);
		writeb_relaxed(TXSLEW_VAL, miphy_phy->base + TXBUF2_REG);
		writeb_relaxed(0x00, miphy_phy->base + RXBUF_OFFSET_CTRL_REG);
		val = SDTHRES_VAL | EQ_ON3;
		writeb_relaxed(val, miphy_phy->base + RXBUF_REG);
		break;
	case SATA_GEN2:
		/*
		 * conf gen sel=0x1 to program Gen2 banked registers
		 * VDDT filter ON
		 * Tx Swing target 550-600mV peak-to-peak diff
		 * Tx Slew target 90-110 ps rising/falling time
		 * RX Equalization ON1, Sigdet threshold SDTH1
		 */
		writeb_relaxed(CONF_GEN_SEL_GEN2,
			       miphy_phy->base + BUF_SEL_REG);
		writeb_relaxed(SWING_VAL, miphy_phy->base + TXBUF1_REG);
		writeb_relaxed(TXSLEW_VAL, miphy_phy->base + TXBUF2_REG);
		val = SDTHRES_VAL | EQ_ON1;
		writeb_relaxed(val, miphy_phy->base + RXBUF_REG);
		break;
	case SATA_GEN1:
		/*
		 * conf gen sel = 00b to program Gen1 banked registers
		 * VDDT filter ON
		 * Tx Swing target 500-550mV peak-to-peak diff
		 * Tx Slew target120-140 ps rising/falling time
		 */
		writeb_relaxed(PD_VDDTFILTER, miphy_phy->base + BUF_SEL_REG);
		writeb_relaxed(SWING_VAL_GEN1, miphy_phy->base + TXBUF1_REG);
		writeb_relaxed(TXSLEW_VAL_GEN1,	miphy_phy->base + TXBUF2_REG);
		break;
	default:
		break;
	}

	/* Force Macro1 in partial mode & release pll cal reset */
	writeb_relaxed(RST_RX, miphy_phy->base + RESET_REG);
	usleep_range(100, 150);

	miphy365x_set_ssc(miphy_phy, miphy_dev);

	/* Wait for phy_ready */
	ret = miphy365x_rdy(miphy_phy, miphy_dev);
	if (ret)
		return ret;

	/*
	 * Enable macro1 to use rx_lspd & tx_lspd
	 * Release Rx_Clock on first I-DLL phase on macro1
	 * Assert deserializer reset
	 * des_bit_lock_en is set
	 * bit lock detection strength
	 * Deassert deserializer reset
	 */
	writeb_relaxed(0x00, miphy_phy->base + BOUNDARY1_REG);
	writeb_relaxed(0x00, miphy_phy->base + IDLL_TEST_REG);
	writeb_relaxed(RST_RX, miphy_phy->base + RESET_REG);
	val = miphy_phy->sata_tx_pol_inv ?
		(TX_POL | DES_BIT_LOCK_EN) : DES_BIT_LOCK_EN;
	writeb_relaxed(val, miphy_phy->base + CTRL_REG);

	val = BIT_LOCK_CNT_512 | BIT_LOCK_LEVEL;
	writeb_relaxed(val, miphy_phy->base + DES_BITLOCK_REG);
	writeb_relaxed(0x00, miphy_phy->base + RESET_REG);

	return 0;
}

static int miphy365x_init(struct phy *phy)
{
	struct miphy365x_phy *miphy_phy = phy_get_drvdata(phy);
	struct miphy365x_dev *miphy_dev = dev_get_drvdata(phy->dev.parent);
	int ret = 0;

	mutex_lock(&miphy_dev->miphy_mutex);

	ret = miphy365x_set_path(miphy_phy, miphy_dev);
	if (ret) {
		mutex_unlock(&miphy_dev->miphy_mutex);
		return ret;
	}

	/* Initialise Miphy for PCIe or SATA */
	if (miphy_phy->type == PHY_TYPE_PCIE)
		ret = miphy365x_init_pcie_port(miphy_phy, miphy_dev);
	else
		ret = miphy365x_init_sata_port(miphy_phy, miphy_dev);

	mutex_unlock(&miphy_dev->miphy_mutex);

	return ret;
}

static int miphy365x_get_addr(struct device *dev,
		struct miphy365x_phy *miphy_phy, int index)
{
	struct device_node *phynode = miphy_phy->phy->dev.of_node;
	const char *name;
	int type = miphy_phy->type;
	int ret;

	ret = of_property_read_string_index(phynode, "reg-names", index, &name);
	if (ret) {
		dev_err(dev, "no reg-names property not found\n");
		return ret;
	}

	if (!((!strncmp(name, "sata", 4) && type == PHY_TYPE_SATA) ||
	      (!strncmp(name, "pcie", 4) && type == PHY_TYPE_PCIE)))
		return 0;

	miphy_phy->base = of_iomap(phynode, index);
	if (!miphy_phy->base) {
		dev_err(dev, "Failed to map %s\n", phynode->full_name);
		return -EINVAL;
	}

	return 0;
}

static struct phy *miphy365x_xlate(struct device *dev,
				   struct of_phandle_args *args)
{
	struct miphy365x_dev *miphy_dev = dev_get_drvdata(dev);
	struct miphy365x_phy *miphy_phy = NULL;
	struct device_node *phynode = args->np;
	int ret, index;

	if (!of_device_is_available(phynode)) {
		dev_warn(dev, "Requested PHY is disabled\n");
		return ERR_PTR(-ENODEV);
	}

	if (args->args_count != 1) {
		dev_err(dev, "Invalid number of cells in 'phy' property\n");
		return ERR_PTR(-EINVAL);
	}

	for (index = 0; index < miphy_dev->nphys; index++)
		if (phynode == miphy_dev->phys[index]->phy->dev.of_node) {
			miphy_phy = miphy_dev->phys[index];
			break;
		}

	if (!miphy_phy) {
		dev_err(dev, "Failed to find appropriate phy\n");
		return ERR_PTR(-EINVAL);
	}

	miphy_phy->type = args->args[0];

	if (!(miphy_phy->type == PHY_TYPE_SATA ||
	      miphy_phy->type == PHY_TYPE_PCIE)) {
		dev_err(dev, "Unsupported device type: %d\n", miphy_phy->type);
		return ERR_PTR(-EINVAL);
	}

	/* Each port handles SATA and PCIE - third entry is always sysconf. */
	for (index = 0; index < 3; index++) {
		ret = miphy365x_get_addr(dev, miphy_phy, index);
		if (ret < 0)
			return ERR_PTR(ret);
	}

	return miphy_phy->phy;
}

static struct phy_ops miphy365x_ops = {
	.init		= miphy365x_init,
	.owner		= THIS_MODULE,
};

static int miphy365x_of_probe(struct device_node *phynode,
			      struct miphy365x_phy *miphy_phy)
{
	of_property_read_u32(phynode, "st,sata-gen", &miphy_phy->sata_gen);
	if (!miphy_phy->sata_gen)
		miphy_phy->sata_gen = SATA_GEN1;

	miphy_phy->pcie_tx_pol_inv =
		of_property_read_bool(phynode, "st,pcie-tx-pol-inv");

	miphy_phy->sata_tx_pol_inv =
		of_property_read_bool(phynode, "st,sata-tx-pol-inv");

	return 0;
}

static int miphy365x_probe(struct platform_device *pdev)
{
	struct device_node *child, *np = pdev->dev.of_node;
	struct miphy365x_dev *miphy_dev;
	struct phy_provider *provider;
	struct phy *phy;
	int ret, port = 0;

	miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
	if (!miphy_dev)
		return -ENOMEM;

	miphy_dev->nphys = of_get_child_count(np);
	miphy_dev->phys = devm_kcalloc(&pdev->dev, miphy_dev->nphys,
				       sizeof(*miphy_dev->phys), GFP_KERNEL);
	if (!miphy_dev->phys)
		return -ENOMEM;

	miphy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
	if (IS_ERR(miphy_dev->regmap)) {
		dev_err(miphy_dev->dev, "No syscfg phandle specified\n");
		return PTR_ERR(miphy_dev->regmap);
	}

	miphy_dev->dev = &pdev->dev;

	dev_set_drvdata(&pdev->dev, miphy_dev);

	mutex_init(&miphy_dev->miphy_mutex);

	for_each_child_of_node(np, child) {
		struct miphy365x_phy *miphy_phy;

		miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy),
					 GFP_KERNEL);
		if (!miphy_phy)
			return -ENOMEM;

		miphy_dev->phys[port] = miphy_phy;

		phy = devm_phy_create(&pdev->dev, child, &miphy365x_ops);
		if (IS_ERR(phy)) {
			dev_err(&pdev->dev, "failed to create PHY\n");
			return PTR_ERR(phy);
		}

		miphy_dev->phys[port]->phy = phy;

		ret = miphy365x_of_probe(child, miphy_phy);
		if (ret)
			return ret;

		phy_set_drvdata(phy, miphy_dev->phys[port]);

		port++;
		/* sysconfig offsets are indexed from 1 */
		ret = of_property_read_u32_index(np, "st,syscfg", port,
					&miphy_phy->ctrlreg);
		if (ret) {
			dev_err(&pdev->dev, "No sysconfig offset found\n");
			return ret;
		}
	}

	provider = devm_of_phy_provider_register(&pdev->dev, miphy365x_xlate);
	return PTR_ERR_OR_ZERO(provider);
}

static const struct of_device_id miphy365x_of_match[] = {
	{ .compatible = "st,miphy365x-phy", },
	{ },
};
MODULE_DEVICE_TABLE(of, miphy365x_of_match);

static struct platform_driver miphy365x_driver = {
	.probe	= miphy365x_probe,
	.driver = {
		.name	= "miphy365x-phy",
		.of_match_table	= miphy365x_of_match,
	}
};
module_platform_driver(miphy365x_driver);

MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@st.com>");
MODULE_DESCRIPTION("STMicroelectronics miphy365x driver");
MODULE_LICENSE("GPL v2");