summaryrefslogtreecommitdiff
path: root/drivers/clk/clk-npcm7xx.c
blob: 740af90a950820055d9934f66e080c338f0cf143 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Nuvoton NPCM7xx Clock Generator
 * All the clocks are initialized by the bootloader, so this driver allow only
 * reading of current settings directly from the hardware.
 *
 * Copyright (C) 2018 Nuvoton Technologies tali.perry@nuvoton.com
 */

#include <linux/module.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/bitfield.h>

#include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>

struct npcm7xx_clk_pll {
	struct clk_hw	hw;
	void __iomem	*pllcon;
	u8		flags;
};

#define to_npcm7xx_clk_pll(_hw) container_of(_hw, struct npcm7xx_clk_pll, hw)

#define PLLCON_LOKI	BIT(31)
#define PLLCON_LOKS	BIT(30)
#define PLLCON_FBDV	GENMASK(27, 16)
#define PLLCON_OTDV2	GENMASK(15, 13)
#define PLLCON_PWDEN	BIT(12)
#define PLLCON_OTDV1	GENMASK(10, 8)
#define PLLCON_INDV	GENMASK(5, 0)

static unsigned long npcm7xx_clk_pll_recalc_rate(struct clk_hw *hw,
						 unsigned long parent_rate)
{
	struct npcm7xx_clk_pll *pll = to_npcm7xx_clk_pll(hw);
	unsigned long fbdv, indv, otdv1, otdv2;
	unsigned int val;
	u64 ret;

	if (parent_rate == 0) {
		pr_err("%s: parent rate is zero", __func__);
		return 0;
	}

	val = readl_relaxed(pll->pllcon);

	indv = FIELD_GET(PLLCON_INDV, val);
	fbdv = FIELD_GET(PLLCON_FBDV, val);
	otdv1 = FIELD_GET(PLLCON_OTDV1, val);
	otdv2 = FIELD_GET(PLLCON_OTDV2, val);

	ret = (u64)parent_rate * fbdv;
	do_div(ret, indv * otdv1 * otdv2);

	return ret;
}

static const struct clk_ops npcm7xx_clk_pll_ops = {
	.recalc_rate = npcm7xx_clk_pll_recalc_rate,
};

static struct clk_hw *
npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
			 const char *parent_name, unsigned long flags)
{
	struct npcm7xx_clk_pll *pll;
	struct clk_init_data init;
	struct clk_hw *hw;
	int ret;

	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
	if (!pll)
		return ERR_PTR(-ENOMEM);

	pr_debug("%s reg, name=%s, p=%s\n", __func__, name, parent_name);

	init.name = name;
	init.ops = &npcm7xx_clk_pll_ops;
	init.parent_names = &parent_name;
	init.num_parents = 1;
	init.flags = flags;

	pll->pllcon = pllcon;
	pll->hw.init = &init;

	hw = &pll->hw;

	ret = clk_hw_register(NULL, hw);
	if (ret) {
		kfree(pll);
		hw = ERR_PTR(ret);
	}

	return hw;
}

#define NPCM7XX_CLKEN1          (0x00)
#define NPCM7XX_CLKEN2          (0x28)
#define NPCM7XX_CLKEN3          (0x30)
#define NPCM7XX_CLKSEL          (0x04)
#define NPCM7XX_CLKDIV1         (0x08)
#define NPCM7XX_CLKDIV2         (0x2C)
#define NPCM7XX_CLKDIV3         (0x58)
#define NPCM7XX_PLLCON0         (0x0C)
#define NPCM7XX_PLLCON1         (0x10)
#define NPCM7XX_PLLCON2         (0x54)
#define NPCM7XX_SWRSTR          (0x14)
#define NPCM7XX_IRQWAKECON      (0x18)
#define NPCM7XX_IRQWAKEFLAG     (0x1C)
#define NPCM7XX_IPSRST1         (0x20)
#define NPCM7XX_IPSRST2         (0x24)
#define NPCM7XX_IPSRST3         (0x34)
#define NPCM7XX_WD0RCR          (0x38)
#define NPCM7XX_WD1RCR          (0x3C)
#define NPCM7XX_WD2RCR          (0x40)
#define NPCM7XX_SWRSTC1         (0x44)
#define NPCM7XX_SWRSTC2         (0x48)
#define NPCM7XX_SWRSTC3         (0x4C)
#define NPCM7XX_SWRSTC4         (0x50)
#define NPCM7XX_CORSTC          (0x5C)
#define NPCM7XX_PLLCONG         (0x60)
#define NPCM7XX_AHBCKFI         (0x64)
#define NPCM7XX_SECCNT          (0x68)
#define NPCM7XX_CNTR25M         (0x6C)

struct npcm7xx_clk_gate_data {
	u32 reg;
	u8 bit_idx;
	const char *name;
	const char *parent_name;
	unsigned long flags;
	/*
	 * If this clock is exported via DT, set onecell_idx to constant
	 * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
	 * this specific clock.  Otherwise, set to -1.
	 */
	int onecell_idx;
};

struct npcm7xx_clk_mux_data {
	u8 shift;
	u8 mask;
	u32 *table;
	const char *name;
	const char * const *parent_names;
	u8 num_parents;
	unsigned long flags;
	/*
	 * If this clock is exported via DT, set onecell_idx to constant
	 * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
	 * this specific clock.  Otherwise, set to -1.
	 */
	int onecell_idx;

};

struct npcm7xx_clk_div_fixed_data {
	u8 mult;
	u8 div;
	const char *name;
	const char *parent_name;
	u8 clk_divider_flags;
	/*
	 * If this clock is exported via DT, set onecell_idx to constant
	 * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
	 * this specific clock.  Otherwise, set to -1.
	 */
	int onecell_idx;
};


struct npcm7xx_clk_div_data {
	u32 reg;
	u8 shift;
	u8 width;
	const char *name;
	const char *parent_name;
	u8 clk_divider_flags;
	unsigned long flags;
	/*
	 * If this clock is exported via DT, set onecell_idx to constant
	 * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
	 * this specific clock.  Otherwise, set to -1.
	 */
	int onecell_idx;
};

struct npcm7xx_clk_pll_data {
	u32 reg;
	const char *name;
	const char *parent_name;
	unsigned long flags;
	/*
	 * If this clock is exported via DT, set onecell_idx to constant
	 * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
	 * this specific clock.  Otherwise, set to -1.
	 */
	int onecell_idx;
};

/*
 * Single copy of strings used to refer to clocks within this driver indexed by
 * above enum.
 */
#define NPCM7XX_CLK_S_REFCLK      "refclk"
#define NPCM7XX_CLK_S_SYSBYPCK    "sysbypck"
#define NPCM7XX_CLK_S_MCBYPCK     "mcbypck"
#define NPCM7XX_CLK_S_GFXBYPCK    "gfxbypck"
#define NPCM7XX_CLK_S_PLL0        "pll0"
#define NPCM7XX_CLK_S_PLL1        "pll1"
#define NPCM7XX_CLK_S_PLL1_DIV2   "pll1_div2"
#define NPCM7XX_CLK_S_PLL2        "pll2"
#define NPCM7XX_CLK_S_PLL_GFX     "pll_gfx"
#define NPCM7XX_CLK_S_PLL2_DIV2   "pll2_div2"
#define NPCM7XX_CLK_S_PIX_MUX     "gfx_pixel"
#define NPCM7XX_CLK_S_GPRFSEL_MUX "gprfsel_mux"
#define NPCM7XX_CLK_S_MC_MUX      "mc_phy"
#define NPCM7XX_CLK_S_CPU_MUX     "cpu"  /*AKA system clock.*/
#define NPCM7XX_CLK_S_MC          "mc"
#define NPCM7XX_CLK_S_AXI         "axi"  /*AKA CLK2*/
#define NPCM7XX_CLK_S_AHB         "ahb"  /*AKA CLK4*/
#define NPCM7XX_CLK_S_CLKOUT_MUX  "clkout_mux"
#define NPCM7XX_CLK_S_UART_MUX    "uart_mux"
#define NPCM7XX_CLK_S_TIM_MUX     "timer_mux"
#define NPCM7XX_CLK_S_SD_MUX      "sd_mux"
#define NPCM7XX_CLK_S_GFXM_MUX    "gfxm_mux"
#define NPCM7XX_CLK_S_SU_MUX      "serial_usb_mux"
#define NPCM7XX_CLK_S_DVC_MUX     "dvc_mux"
#define NPCM7XX_CLK_S_GFX_MUX     "gfx_mux"
#define NPCM7XX_CLK_S_GFX_PIXEL   "gfx_pixel"
#define NPCM7XX_CLK_S_SPI0        "spi0"
#define NPCM7XX_CLK_S_SPI3        "spi3"
#define NPCM7XX_CLK_S_SPIX        "spix"
#define NPCM7XX_CLK_S_APB1        "apb1"
#define NPCM7XX_CLK_S_APB2        "apb2"
#define NPCM7XX_CLK_S_APB3        "apb3"
#define NPCM7XX_CLK_S_APB4        "apb4"
#define NPCM7XX_CLK_S_APB5        "apb5"
#define NPCM7XX_CLK_S_TOCK        "tock"
#define NPCM7XX_CLK_S_CLKOUT      "clkout"
#define NPCM7XX_CLK_S_UART        "uart"
#define NPCM7XX_CLK_S_TIMER       "timer"
#define NPCM7XX_CLK_S_MMC         "mmc"
#define NPCM7XX_CLK_S_SDHC        "sdhc"
#define NPCM7XX_CLK_S_ADC         "adc"
#define NPCM7XX_CLK_S_GFX         "gfx0_gfx1_mem"
#define NPCM7XX_CLK_S_USBIF       "serial_usbif"
#define NPCM7XX_CLK_S_USB_HOST    "usb_host"
#define NPCM7XX_CLK_S_USB_BRIDGE  "usb_bridge"
#define NPCM7XX_CLK_S_PCI         "pci"

static u32 pll_mux_table[] = {0, 1, 2, 3};
static const char * const pll_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_PLL0,
	NPCM7XX_CLK_S_PLL1_DIV2,
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_PLL2_DIV2,
};

static u32 cpuck_mux_table[] = {0, 1, 2, 3};
static const char * const cpuck_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_PLL0,
	NPCM7XX_CLK_S_PLL1_DIV2,
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_SYSBYPCK,
};

static u32 pixcksel_mux_table[] = {0, 2};
static const char * const pixcksel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_PLL_GFX,
	NPCM7XX_CLK_S_REFCLK,
};

static u32 sucksel_mux_table[] = {2, 3};
static const char * const sucksel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_PLL2_DIV2,
};

static u32 mccksel_mux_table[] = {0, 2, 3};
static const char * const mccksel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_PLL1_DIV2,
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_MCBYPCK,
};

static u32 clkoutsel_mux_table[] = {0, 1, 2, 3, 4};
static const char * const clkoutsel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_PLL0,
	NPCM7XX_CLK_S_PLL1_DIV2,
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_PLL_GFX, // divided by 2
	NPCM7XX_CLK_S_PLL2_DIV2,
};

static u32 gfxmsel_mux_table[] = {2, 3};
static const char * const gfxmsel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_PLL2_DIV2,
};

static u32 dvcssel_mux_table[] = {2, 3};
static const char * const dvcssel_mux_parents[] __initconst = {
	NPCM7XX_CLK_S_REFCLK,
	NPCM7XX_CLK_S_PLL2,
};

static const struct npcm7xx_clk_pll_data npcm7xx_plls[] __initconst = {
	{NPCM7XX_PLLCON0, NPCM7XX_CLK_S_PLL0, NPCM7XX_CLK_S_REFCLK, 0, -1},

	{NPCM7XX_PLLCON1, NPCM7XX_CLK_S_PLL1,
	NPCM7XX_CLK_S_REFCLK, 0, -1},

	{NPCM7XX_PLLCON2, NPCM7XX_CLK_S_PLL2,
	NPCM7XX_CLK_S_REFCLK, 0, -1},

	{NPCM7XX_PLLCONG, NPCM7XX_CLK_S_PLL_GFX,
	NPCM7XX_CLK_S_REFCLK, 0, -1},
};

static const struct npcm7xx_clk_mux_data npcm7xx_muxes[] __initconst = {
	{0, GENMASK(1, 0), cpuck_mux_table, NPCM7XX_CLK_S_CPU_MUX,
	cpuck_mux_parents, ARRAY_SIZE(cpuck_mux_parents), CLK_IS_CRITICAL,
	NPCM7XX_CLK_CPU},

	{4, GENMASK(1, 0), pixcksel_mux_table, NPCM7XX_CLK_S_PIX_MUX,
	pixcksel_mux_parents, ARRAY_SIZE(pixcksel_mux_parents), 0,
	NPCM7XX_CLK_GFX_PIXEL},

	{6, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_SD_MUX,
	pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},

	{8, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_UART_MUX,
	pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},

	{10, GENMASK(1, 0), sucksel_mux_table, NPCM7XX_CLK_S_SU_MUX,
	sucksel_mux_parents, ARRAY_SIZE(sucksel_mux_parents), 0, -1},

	{12, GENMASK(1, 0), mccksel_mux_table, NPCM7XX_CLK_S_MC_MUX,
	mccksel_mux_parents, ARRAY_SIZE(mccksel_mux_parents), 0, -1},

	{14, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_TIM_MUX,
	pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},

	{16, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_GFX_MUX,
	pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},

	{18, GENMASK(2, 0), clkoutsel_mux_table, NPCM7XX_CLK_S_CLKOUT_MUX,
	clkoutsel_mux_parents, ARRAY_SIZE(clkoutsel_mux_parents), 0, -1},

	{21, GENMASK(1, 0), gfxmsel_mux_table, NPCM7XX_CLK_S_GFXM_MUX,
	gfxmsel_mux_parents, ARRAY_SIZE(gfxmsel_mux_parents), 0, -1},

	{23, GENMASK(1, 0), dvcssel_mux_table, NPCM7XX_CLK_S_DVC_MUX,
	dvcssel_mux_parents, ARRAY_SIZE(dvcssel_mux_parents), 0, -1},
};

/* fixed ratio dividers (no register): */
static const struct npcm7xx_clk_div_fixed_data npcm7xx_divs_fx[] __initconst = {
	{ 1, 2, NPCM7XX_CLK_S_MC, NPCM7XX_CLK_S_MC_MUX, 0, NPCM7XX_CLK_MC},
	{ 1, 2, NPCM7XX_CLK_S_PLL1_DIV2, NPCM7XX_CLK_S_PLL1, 0, -1},
	{ 1, 2, NPCM7XX_CLK_S_PLL2_DIV2, NPCM7XX_CLK_S_PLL2, 0, -1},
};

/* configurable dividers: */
static const struct npcm7xx_clk_div_data npcm7xx_divs[] __initconst = {
	{NPCM7XX_CLKDIV1, 28, 3, NPCM7XX_CLK_S_ADC,
	NPCM7XX_CLK_S_TIMER, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_ADC},
	/*30-28 ADCCKDIV*/
	{NPCM7XX_CLKDIV1, 26, 2, NPCM7XX_CLK_S_AHB,
	NPCM7XX_CLK_S_AXI, 0, CLK_IS_CRITICAL, NPCM7XX_CLK_AHB},
	/*27-26 CLK4DIV*/
	{NPCM7XX_CLKDIV1, 21, 5, NPCM7XX_CLK_S_TIMER,
	NPCM7XX_CLK_S_TIM_MUX, 0, 0, NPCM7XX_CLK_TIMER},
	/*25-21 TIMCKDIV*/
	{NPCM7XX_CLKDIV1, 16, 5, NPCM7XX_CLK_S_UART,
	NPCM7XX_CLK_S_UART_MUX, 0, 0, NPCM7XX_CLK_UART},
	/*20-16 UARTDIV*/
	{NPCM7XX_CLKDIV1, 11, 5, NPCM7XX_CLK_S_MMC,
	NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_MMC},
	/*15-11 MMCCKDIV*/
	{NPCM7XX_CLKDIV1, 6, 5, NPCM7XX_CLK_S_SPI3,
	NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI3},
	/*10-6 AHB3CKDIV*/
	{NPCM7XX_CLKDIV1, 2, 4, NPCM7XX_CLK_S_PCI,
	NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_PCI},
	/*5-2 PCICKDIV*/
	{NPCM7XX_CLKDIV1, 0, 1, NPCM7XX_CLK_S_AXI,
	NPCM7XX_CLK_S_CPU_MUX, CLK_DIVIDER_POWER_OF_TWO, CLK_IS_CRITICAL,
	NPCM7XX_CLK_AXI},/*0 CLK2DIV*/

	{NPCM7XX_CLKDIV2, 30, 2, NPCM7XX_CLK_S_APB4,
	NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB4},
	/*31-30 APB4CKDIV*/
	{NPCM7XX_CLKDIV2, 28, 2, NPCM7XX_CLK_S_APB3,
	NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB3},
	/*29-28 APB3CKDIV*/
	{NPCM7XX_CLKDIV2, 26, 2, NPCM7XX_CLK_S_APB2,
	NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB2},
	/*27-26 APB2CKDIV*/
	{NPCM7XX_CLKDIV2, 24, 2, NPCM7XX_CLK_S_APB1,
	NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB1},
	/*25-24 APB1CKDIV*/
	{NPCM7XX_CLKDIV2, 22, 2, NPCM7XX_CLK_S_APB5,
	NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB5},
	/*23-22 APB5CKDIV*/
	{NPCM7XX_CLKDIV2, 16, 5, NPCM7XX_CLK_S_CLKOUT,
	NPCM7XX_CLK_S_CLKOUT_MUX, 0, 0, NPCM7XX_CLK_CLKOUT},
	/*20-16 CLKOUTDIV*/
	{NPCM7XX_CLKDIV2, 13, 3, NPCM7XX_CLK_S_GFX,
	NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_GFX},
	/*15-13 GFXCKDIV*/
	{NPCM7XX_CLKDIV2, 8, 5, NPCM7XX_CLK_S_USB_BRIDGE,
	NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU},
	/*12-8 SUCKDIV*/
	{NPCM7XX_CLKDIV2, 4, 4, NPCM7XX_CLK_S_USB_HOST,
	NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU48},
	/*7-4 SU48CKDIV*/
	{NPCM7XX_CLKDIV2, 0, 4, NPCM7XX_CLK_S_SDHC,
	NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_SDHC}
	,/*3-0 SD1CKDIV*/

	{NPCM7XX_CLKDIV3, 6, 5, NPCM7XX_CLK_S_SPI0,
	NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI0},
	/*10-6 SPI0CKDV*/
	{NPCM7XX_CLKDIV3, 1, 5, NPCM7XX_CLK_S_SPIX,
	NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPIX},
	/*5-1 SPIXCKDV*/

};

static const struct npcm7xx_clk_gate_data npcm7xx_gates[] __initconst = {
	{NPCM7XX_CLKEN1, 31, "smb1-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 30, "smb0-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 29, "smb7-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 28, "smb6-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 27, "adc-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 26, "wdt-gate", NPCM7XX_CLK_S_TIMER, 0},
	{NPCM7XX_CLKEN1, 25, "usbdev3-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 24, "usbdev6-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 23, "usbdev5-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 22, "usbdev4-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 21, "emc2-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 20, "timer5_9-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 19, "timer0_4-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 18, "pwmm0-gate", NPCM7XX_CLK_S_APB3, 0},
	{NPCM7XX_CLKEN1, 17, "huart-gate", NPCM7XX_CLK_S_UART, 0},
	{NPCM7XX_CLKEN1, 16, "smb5-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 15, "smb4-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 14, "smb3-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 13, "smb2-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN1, 12, "mc-gate", NPCM7XX_CLK_S_MC, 0},
	{NPCM7XX_CLKEN1, 11, "uart01-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 10, "aes-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 9, "peci-gate", NPCM7XX_CLK_S_APB3, 0},
	{NPCM7XX_CLKEN1, 8, "usbdev2-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 7, "uart23-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 6, "emc1-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 5, "usbdev1-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 4, "shm-gate", NPCM7XX_CLK_S_AHB, 0},
	/* bit 3 is reserved */
	{NPCM7XX_CLKEN1, 2, "kcs-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN1, 1, "spi3-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN1, 0, "spi0-gate", NPCM7XX_CLK_S_AHB, 0},

	{NPCM7XX_CLKEN2, 31, "cp-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 30, "tock-gate", NPCM7XX_CLK_S_TOCK, 0},
	/* bit 29 is reserved */
	{NPCM7XX_CLKEN2, 28, "gmac1-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 27, "usbif-gate", NPCM7XX_CLK_S_USBIF, 0},
	{NPCM7XX_CLKEN2, 26, "usbhost-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 25, "gmac2-gate", NPCM7XX_CLK_S_AHB, 0},
	/* bit 24 is reserved */
	{NPCM7XX_CLKEN2, 23, "pspi2-gate", NPCM7XX_CLK_S_APB5, 0},
	{NPCM7XX_CLKEN2, 22, "pspi1-gate", NPCM7XX_CLK_S_APB5, 0},
	{NPCM7XX_CLKEN2, 21, "3des-gate", NPCM7XX_CLK_S_AHB, 0},
	/* bit 20 is reserved */
	{NPCM7XX_CLKEN2, 19, "siox2-gate", NPCM7XX_CLK_S_APB3, 0},
	{NPCM7XX_CLKEN2, 18, "siox1-gate", NPCM7XX_CLK_S_APB3, 0},
	/* bit 17 is reserved */
	{NPCM7XX_CLKEN2, 16, "fuse-gate", NPCM7XX_CLK_S_APB4, 0},
	/*  bit 15 is reserved */
	{NPCM7XX_CLKEN2, 14, "vcd-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 13, "ece-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 12, "vdma-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 11, "ahbpcibrg-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 10, "gfxsys-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN2, 9, "sdhc-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 8, "mmc-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN2, 7, "mft7-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 6, "mft6-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 5, "mft5-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 4, "mft4-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 3, "mft3-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 2, "mft2-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 1, "mft1-gate", NPCM7XX_CLK_S_APB4, 0},
	{NPCM7XX_CLKEN2, 0, "mft0-gate", NPCM7XX_CLK_S_APB4, 0},

	{NPCM7XX_CLKEN3, 31, "gpiom7-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 30, "gpiom6-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 29, "gpiom5-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 28, "gpiom4-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 27, "gpiom3-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 26, "gpiom2-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 25, "gpiom1-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 24, "gpiom0-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 23, "espi-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 22, "smb11-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 21, "smb10-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 20, "smb9-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 19, "smb8-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 18, "smb15-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 17, "rng-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 16, "timer10_14-gate", NPCM7XX_CLK_S_APB1, 0},
	{NPCM7XX_CLKEN3, 15, "pcirc-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 14, "sececc-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 13, "sha-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 12, "smb14-gate", NPCM7XX_CLK_S_APB2, 0},
	/* bit 11 is reserved */
	/* bit 10 is reserved */
	{NPCM7XX_CLKEN3, 9, "pcimbx-gate", NPCM7XX_CLK_S_AHB, 0},
	/* bit 8 is reserved */
	{NPCM7XX_CLKEN3, 7, "usbdev9-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 6, "usbdev8-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 5, "usbdev7-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 4, "usbdev0-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 3, "smb13-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 2, "spix-gate", NPCM7XX_CLK_S_AHB, 0},
	{NPCM7XX_CLKEN3, 1, "smb12-gate", NPCM7XX_CLK_S_APB2, 0},
	{NPCM7XX_CLKEN3, 0, "pwmm1-gate", NPCM7XX_CLK_S_APB3, 0},
};

static DEFINE_SPINLOCK(npcm7xx_clk_lock);

static void __init npcm7xx_clk_init(struct device_node *clk_np)
{
	struct clk_hw_onecell_data *npcm7xx_clk_data;
	void __iomem *clk_base;
	struct resource res;
	struct clk_hw *hw;
	int ret;
	int i;

	ret = of_address_to_resource(clk_np, 0, &res);
	if (ret) {
		pr_err("%s: failed to get resource, ret %d\n", clk_np->name,
			ret);
		return;
	}

	clk_base = ioremap(res.start, resource_size(&res));
	if (!clk_base)
		goto npcm7xx_init_error;

	npcm7xx_clk_data = kzalloc(sizeof(*npcm7xx_clk_data->hws) *
		NPCM7XX_NUM_CLOCKS + sizeof(npcm7xx_clk_data), GFP_KERNEL);
	if (!npcm7xx_clk_data)
		goto npcm7xx_init_np_err;

	npcm7xx_clk_data->num = NPCM7XX_NUM_CLOCKS;

	for (i = 0; i < NPCM7XX_NUM_CLOCKS; i++)
		npcm7xx_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);

	/* Register plls */
	for (i = 0; i < ARRAY_SIZE(npcm7xx_plls); i++) {
		const struct npcm7xx_clk_pll_data *pll_data = &npcm7xx_plls[i];

		hw = npcm7xx_clk_register_pll(clk_base + pll_data->reg,
			pll_data->name, pll_data->parent_name, pll_data->flags);
		if (IS_ERR(hw)) {
			pr_err("npcm7xx_clk: Can't register pll\n");
			goto npcm7xx_init_fail;
		}

		if (pll_data->onecell_idx >= 0)
			npcm7xx_clk_data->hws[pll_data->onecell_idx] = hw;
	}

	/* Register fixed dividers */
	hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL1_DIV2,
			NPCM7XX_CLK_S_PLL1, 0, 1, 2);
	if (IS_ERR(hw)) {
		pr_err("npcm7xx_clk: Can't register fixed div\n");
		goto npcm7xx_init_fail;
	}

	hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL2_DIV2,
			NPCM7XX_CLK_S_PLL2, 0, 1, 2);
	if (IS_ERR(hw)) {
		pr_err("npcm7xx_clk: Can't register div2\n");
		goto npcm7xx_init_fail;
	}

	/* Register muxes */
	for (i = 0; i < ARRAY_SIZE(npcm7xx_muxes); i++) {
		const struct npcm7xx_clk_mux_data *mux_data = &npcm7xx_muxes[i];

		hw = clk_hw_register_mux_table(NULL,
			mux_data->name,
			mux_data->parent_names, mux_data->num_parents,
			mux_data->flags, clk_base + NPCM7XX_CLKSEL,
			mux_data->shift, mux_data->mask, 0,
			mux_data->table, &npcm7xx_clk_lock);

		if (IS_ERR(hw)) {
			pr_err("npcm7xx_clk: Can't register mux\n");
			goto npcm7xx_init_fail;
		}

		if (mux_data->onecell_idx >= 0)
			npcm7xx_clk_data->hws[mux_data->onecell_idx] = hw;
	}

	/* Register clock dividers specified in npcm7xx_divs */
	for (i = 0; i < ARRAY_SIZE(npcm7xx_divs); i++) {
		const struct npcm7xx_clk_div_data *div_data = &npcm7xx_divs[i];

		hw = clk_hw_register_divider(NULL, div_data->name,
				div_data->parent_name,
				div_data->flags,
				clk_base + div_data->reg,
				div_data->shift, div_data->width,
				div_data->clk_divider_flags, &npcm7xx_clk_lock);
		if (IS_ERR(hw)) {
			pr_err("npcm7xx_clk: Can't register div table\n");
			goto npcm7xx_init_fail;
		}

		if (div_data->onecell_idx >= 0)
			npcm7xx_clk_data->hws[div_data->onecell_idx] = hw;
	}

	ret = of_clk_add_hw_provider(clk_np, of_clk_hw_onecell_get,
					npcm7xx_clk_data);
	if (ret)
		pr_err("failed to add DT provider: %d\n", ret);

	of_node_put(clk_np);

	return;

npcm7xx_init_fail:
	kfree(npcm7xx_clk_data->hws);
npcm7xx_init_np_err:
	iounmap(clk_base);
npcm7xx_init_error:
	of_node_put(clk_np);
}
CLK_OF_DECLARE(npcm7xx_clk_init, "nuvoton,npcm750-clk", npcm7xx_clk_init);