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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/clk-provider.h>
3#include <linux/mfd/syscon.h>
4#include <linux/slab.h>
5
6#include <dt-bindings/clock/at91.h>
7
8#include "pmc.h"
9
10struct sck {
11 char *n;
12 char *p;
13 u8 id;
14};
15
16struct pck {
17 char *n;
18 u8 id;
19};
20
21struct at91sam926x_data {
22 const struct clk_pll_layout *plla_layout;
23 const struct clk_pll_characteristics *plla_characteristics;
24 const struct clk_pll_layout *pllb_layout;
25 const struct clk_pll_characteristics *pllb_characteristics;
26 const struct clk_master_characteristics *mck_characteristics;
27 const struct sck *sck;
28 const struct pck *pck;
29 u8 num_sck;
30 u8 num_pck;
31 u8 num_progck;
32 bool has_slck;
33};
34
35static DEFINE_SPINLOCK(at91sam9260_mck_lock);
36
37static const struct clk_master_characteristics sam9260_mck_characteristics = {
38 .output = { .min = 0, .max = 105000000 },
39 .divisors = { 1, 2, 4, 0 },
40};
41
42static u8 sam9260_plla_out[] = { 0, 2 };
43
44static u16 sam9260_plla_icpll[] = { 1, 1 };
45
46static const struct clk_range sam9260_plla_outputs[] = {
47 { .min = 80000000, .max = 160000000 },
48 { .min = 150000000, .max = 240000000 },
49};
50
51static const struct clk_pll_characteristics sam9260_plla_characteristics = {
52 .input = { .min = 1000000, .max = 32000000 },
53 .num_output = ARRAY_SIZE(sam9260_plla_outputs),
54 .output = sam9260_plla_outputs,
55 .icpll = sam9260_plla_icpll,
56 .out = sam9260_plla_out,
57};
58
59static u8 sam9260_pllb_out[] = { 1 };
60
61static u16 sam9260_pllb_icpll[] = { 1 };
62
63static const struct clk_range sam9260_pllb_outputs[] = {
64 { .min = 70000000, .max = 130000000 },
65};
66
67static const struct clk_pll_characteristics sam9260_pllb_characteristics = {
68 .input = { .min = 1000000, .max = 5000000 },
69 .num_output = ARRAY_SIZE(sam9260_pllb_outputs),
70 .output = sam9260_pllb_outputs,
71 .icpll = sam9260_pllb_icpll,
72 .out = sam9260_pllb_out,
73};
74
75static const struct sck at91sam9260_systemck[] = {
76 { .n = "uhpck", .p = "usbck", .id = 6 },
77 { .n = "udpck", .p = "usbck", .id = 7 },
78 { .n = "pck0", .p = "prog0", .id = 8 },
79 { .n = "pck1", .p = "prog1", .id = 9 },
80};
81
82static const struct pck at91sam9260_periphck[] = {
83 { .n = "pioA_clk", .id = 2 },
84 { .n = "pioB_clk", .id = 3 },
85 { .n = "pioC_clk", .id = 4 },
86 { .n = "adc_clk", .id = 5 },
87 { .n = "usart0_clk", .id = 6 },
88 { .n = "usart1_clk", .id = 7 },
89 { .n = "usart2_clk", .id = 8 },
90 { .n = "mci0_clk", .id = 9 },
91 { .n = "udc_clk", .id = 10 },
92 { .n = "twi0_clk", .id = 11 },
93 { .n = "spi0_clk", .id = 12 },
94 { .n = "spi1_clk", .id = 13 },
95 { .n = "ssc0_clk", .id = 14 },
96 { .n = "tc0_clk", .id = 17 },
97 { .n = "tc1_clk", .id = 18 },
98 { .n = "tc2_clk", .id = 19 },
99 { .n = "ohci_clk", .id = 20 },
100 { .n = "macb0_clk", .id = 21 },
101 { .n = "isi_clk", .id = 22 },
102 { .n = "usart3_clk", .id = 23 },
103 { .n = "uart0_clk", .id = 24 },
104 { .n = "uart1_clk", .id = 25 },
105 { .n = "tc3_clk", .id = 26 },
106 { .n = "tc4_clk", .id = 27 },
107 { .n = "tc5_clk", .id = 28 },
108};
109
110static struct at91sam926x_data at91sam9260_data = {
111 .plla_layout = &at91rm9200_pll_layout,
112 .plla_characteristics = &sam9260_plla_characteristics,
113 .pllb_layout = &at91rm9200_pll_layout,
114 .pllb_characteristics = &sam9260_pllb_characteristics,
115 .mck_characteristics = &sam9260_mck_characteristics,
116 .sck = at91sam9260_systemck,
117 .num_sck = ARRAY_SIZE(at91sam9260_systemck),
118 .pck = at91sam9260_periphck,
119 .num_pck = ARRAY_SIZE(at91sam9260_periphck),
120 .num_progck = 2,
121 .has_slck = true,
122};
123
124static const struct clk_master_characteristics sam9g20_mck_characteristics = {
125 .output = { .min = 0, .max = 133000000 },
126 .divisors = { 1, 2, 4, 6 },
127};
128
129static u8 sam9g20_plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 };
130
131static u16 sam9g20_plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 };
132
133static const struct clk_range sam9g20_plla_outputs[] = {
134 { .min = 745000000, .max = 800000000 },
135 { .min = 695000000, .max = 750000000 },
136 { .min = 645000000, .max = 700000000 },
137 { .min = 595000000, .max = 650000000 },
138 { .min = 545000000, .max = 600000000 },
139 { .min = 495000000, .max = 550000000 },
140 { .min = 445000000, .max = 500000000 },
141 { .min = 400000000, .max = 450000000 },
142};
143
144static const struct clk_pll_characteristics sam9g20_plla_characteristics = {
145 .input = { .min = 2000000, .max = 32000000 },
146 .num_output = ARRAY_SIZE(sam9g20_plla_outputs),
147 .output = sam9g20_plla_outputs,
148 .icpll = sam9g20_plla_icpll,
149 .out = sam9g20_plla_out,
150};
151
152static u8 sam9g20_pllb_out[] = { 0 };
153
154static u16 sam9g20_pllb_icpll[] = { 0 };
155
156static const struct clk_range sam9g20_pllb_outputs[] = {
157 { .min = 30000000, .max = 100000000 },
158};
159
160static const struct clk_pll_characteristics sam9g20_pllb_characteristics = {
161 .input = { .min = 2000000, .max = 32000000 },
162 .num_output = ARRAY_SIZE(sam9g20_pllb_outputs),
163 .output = sam9g20_pllb_outputs,
164 .icpll = sam9g20_pllb_icpll,
165 .out = sam9g20_pllb_out,
166};
167
168static struct at91sam926x_data at91sam9g20_data = {
169 .plla_layout = &at91sam9g45_pll_layout,
170 .plla_characteristics = &sam9g20_plla_characteristics,
171 .pllb_layout = &at91sam9g20_pllb_layout,
172 .pllb_characteristics = &sam9g20_pllb_characteristics,
173 .mck_characteristics = &sam9g20_mck_characteristics,
174 .sck = at91sam9260_systemck,
175 .num_sck = ARRAY_SIZE(at91sam9260_systemck),
176 .pck = at91sam9260_periphck,
177 .num_pck = ARRAY_SIZE(at91sam9260_periphck),
178 .num_progck = 2,
179 .has_slck = true,
180};
181
182static const struct clk_master_characteristics sam9261_mck_characteristics = {
183 .output = { .min = 0, .max = 94000000 },
184 .divisors = { 1, 2, 4, 0 },
185};
186
187static const struct clk_range sam9261_plla_outputs[] = {
188 { .min = 80000000, .max = 200000000 },
189 { .min = 190000000, .max = 240000000 },
190};
191
192static const struct clk_pll_characteristics sam9261_plla_characteristics = {
193 .input = { .min = 1000000, .max = 32000000 },
194 .num_output = ARRAY_SIZE(sam9261_plla_outputs),
195 .output = sam9261_plla_outputs,
196 .icpll = sam9260_plla_icpll,
197 .out = sam9260_plla_out,
198};
199
200static u8 sam9261_pllb_out[] = { 1 };
201
202static u16 sam9261_pllb_icpll[] = { 1 };
203
204static const struct clk_range sam9261_pllb_outputs[] = {
205 { .min = 70000000, .max = 130000000 },
206};
207
208static const struct clk_pll_characteristics sam9261_pllb_characteristics = {
209 .input = { .min = 1000000, .max = 5000000 },
210 .num_output = ARRAY_SIZE(sam9261_pllb_outputs),
211 .output = sam9261_pllb_outputs,
212 .icpll = sam9261_pllb_icpll,
213 .out = sam9261_pllb_out,
214};
215
216static const struct sck at91sam9261_systemck[] = {
217 { .n = "uhpck", .p = "usbck", .id = 6 },
218 { .n = "udpck", .p = "usbck", .id = 7 },
219 { .n = "pck0", .p = "prog0", .id = 8 },
220 { .n = "pck1", .p = "prog1", .id = 9 },
221 { .n = "pck2", .p = "prog2", .id = 10 },
222 { .n = "pck3", .p = "prog3", .id = 11 },
223 { .n = "hclk0", .p = "masterck_div", .id = 16 },
224 { .n = "hclk1", .p = "masterck_div", .id = 17 },
225};
226
227static const struct pck at91sam9261_periphck[] = {
228 { .n = "pioA_clk", .id = 2, },
229 { .n = "pioB_clk", .id = 3, },
230 { .n = "pioC_clk", .id = 4, },
231 { .n = "usart0_clk", .id = 6, },
232 { .n = "usart1_clk", .id = 7, },
233 { .n = "usart2_clk", .id = 8, },
234 { .n = "mci0_clk", .id = 9, },
235 { .n = "udc_clk", .id = 10, },
236 { .n = "twi0_clk", .id = 11, },
237 { .n = "spi0_clk", .id = 12, },
238 { .n = "spi1_clk", .id = 13, },
239 { .n = "ssc0_clk", .id = 14, },
240 { .n = "ssc1_clk", .id = 15, },
241 { .n = "ssc2_clk", .id = 16, },
242 { .n = "tc0_clk", .id = 17, },
243 { .n = "tc1_clk", .id = 18, },
244 { .n = "tc2_clk", .id = 19, },
245 { .n = "ohci_clk", .id = 20, },
246 { .n = "lcd_clk", .id = 21, },
247};
248
249static struct at91sam926x_data at91sam9261_data = {
250 .plla_layout = &at91rm9200_pll_layout,
251 .plla_characteristics = &sam9261_plla_characteristics,
252 .pllb_layout = &at91rm9200_pll_layout,
253 .pllb_characteristics = &sam9261_pllb_characteristics,
254 .mck_characteristics = &sam9261_mck_characteristics,
255 .sck = at91sam9261_systemck,
256 .num_sck = ARRAY_SIZE(at91sam9261_systemck),
257 .pck = at91sam9261_periphck,
258 .num_pck = ARRAY_SIZE(at91sam9261_periphck),
259 .num_progck = 4,
260};
261
262static const struct clk_master_characteristics sam9263_mck_characteristics = {
263 .output = { .min = 0, .max = 120000000 },
264 .divisors = { 1, 2, 4, 0 },
265};
266
267static const struct clk_range sam9263_pll_outputs[] = {
268 { .min = 80000000, .max = 200000000 },
269 { .min = 190000000, .max = 240000000 },
270};
271
272static const struct clk_pll_characteristics sam9263_pll_characteristics = {
273 .input = { .min = 1000000, .max = 32000000 },
274 .num_output = ARRAY_SIZE(sam9263_pll_outputs),
275 .output = sam9263_pll_outputs,
276 .icpll = sam9260_plla_icpll,
277 .out = sam9260_plla_out,
278};
279
280static const struct sck at91sam9263_systemck[] = {
281 { .n = "uhpck", .p = "usbck", .id = 6 },
282 { .n = "udpck", .p = "usbck", .id = 7 },
283 { .n = "pck0", .p = "prog0", .id = 8 },
284 { .n = "pck1", .p = "prog1", .id = 9 },
285 { .n = "pck2", .p = "prog2", .id = 10 },
286 { .n = "pck3", .p = "prog3", .id = 11 },
287};
288
289static const struct pck at91sam9263_periphck[] = {
290 { .n = "pioA_clk", .id = 2, },
291 { .n = "pioB_clk", .id = 3, },
292 { .n = "pioCDE_clk", .id = 4, },
293 { .n = "usart0_clk", .id = 7, },
294 { .n = "usart1_clk", .id = 8, },
295 { .n = "usart2_clk", .id = 9, },
296 { .n = "mci0_clk", .id = 10, },
297 { .n = "mci1_clk", .id = 11, },
298 { .n = "can_clk", .id = 12, },
299 { .n = "twi0_clk", .id = 13, },
300 { .n = "spi0_clk", .id = 14, },
301 { .n = "spi1_clk", .id = 15, },
302 { .n = "ssc0_clk", .id = 16, },
303 { .n = "ssc1_clk", .id = 17, },
304 { .n = "ac97_clk", .id = 18, },
305 { .n = "tcb_clk", .id = 19, },
306 { .n = "pwm_clk", .id = 20, },
307 { .n = "macb0_clk", .id = 21, },
308 { .n = "g2de_clk", .id = 23, },
309 { .n = "udc_clk", .id = 24, },
310 { .n = "isi_clk", .id = 25, },
311 { .n = "lcd_clk", .id = 26, },
312 { .n = "dma_clk", .id = 27, },
313 { .n = "ohci_clk", .id = 29, },
314};
315
316static struct at91sam926x_data at91sam9263_data = {
317 .plla_layout = &at91rm9200_pll_layout,
318 .plla_characteristics = &sam9263_pll_characteristics,
319 .pllb_layout = &at91rm9200_pll_layout,
320 .pllb_characteristics = &sam9263_pll_characteristics,
321 .mck_characteristics = &sam9263_mck_characteristics,
322 .sck = at91sam9263_systemck,
323 .num_sck = ARRAY_SIZE(at91sam9263_systemck),
324 .pck = at91sam9263_periphck,
325 .num_pck = ARRAY_SIZE(at91sam9263_periphck),
326 .num_progck = 4,
327};
328
329static void __init at91sam926x_pmc_setup(struct device_node *np,
330 struct at91sam926x_data *data)
331{
332 const char *slowxtal_name, *mainxtal_name;
333 struct pmc_data *at91sam9260_pmc;
334 u32 usb_div[] = { 1, 2, 4, 0 };
335 const char *parent_names[6];
336 const char *slck_name;
337 struct regmap *regmap;
338 struct clk_hw *hw;
339 int i;
340 bool bypass;
341
342 i = of_property_match_string(np, "clock-names", "slow_xtal");
343 if (i < 0)
344 return;
345
346 slowxtal_name = of_clk_get_parent_name(np, i);
347
348 i = of_property_match_string(np, "clock-names", "main_xtal");
349 if (i < 0)
350 return;
351 mainxtal_name = of_clk_get_parent_name(np, i);
352
353 regmap = device_node_to_regmap(np);
354 if (IS_ERR(regmap))
355 return;
356
357 at91sam9260_pmc = pmc_data_allocate(PMC_PLLBCK + 1,
358 ndck(data->sck, data->num_sck),
359 ndck(data->pck, data->num_pck),
360 0, data->num_progck);
361 if (!at91sam9260_pmc)
362 return;
363
364 bypass = of_property_read_bool(np, "atmel,osc-bypass");
365
366 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, NULL,
367 bypass);
368 if (IS_ERR(hw))
369 goto err_free;
370
371 hw = at91_clk_register_rm9200_main(regmap, "mainck", "main_osc", NULL);
372 if (IS_ERR(hw))
373 goto err_free;
374
375 at91sam9260_pmc->chws[PMC_MAIN] = hw;
376
377 if (data->has_slck) {
378 hw = clk_hw_register_fixed_rate_with_accuracy(NULL,
379 "slow_rc_osc",
380 NULL, 0, 32768,
381 50000000);
382 if (IS_ERR(hw))
383 goto err_free;
384
385 parent_names[0] = "slow_rc_osc";
386 parent_names[1] = "slow_xtal";
387 hw = at91_clk_register_sam9260_slow(regmap, "slck",
388 parent_names, 2);
389 if (IS_ERR(hw))
390 goto err_free;
391
392 at91sam9260_pmc->chws[PMC_SLOW] = hw;
393 slck_name = "slck";
394 } else {
395 slck_name = slowxtal_name;
396 }
397
398 hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
399 data->plla_layout,
400 data->plla_characteristics);
401 if (IS_ERR(hw))
402 goto err_free;
403
404 at91sam9260_pmc->chws[PMC_PLLACK] = hw;
405
406 hw = at91_clk_register_pll(regmap, "pllbck", "mainck", 1,
407 data->pllb_layout,
408 data->pllb_characteristics);
409 if (IS_ERR(hw))
410 goto err_free;
411
412 at91sam9260_pmc->chws[PMC_PLLBCK] = hw;
413
414 parent_names[0] = slck_name;
415 parent_names[1] = "mainck";
416 parent_names[2] = "pllack";
417 parent_names[3] = "pllbck";
418 hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
419 parent_names, NULL,
420 &at91rm9200_master_layout,
421 data->mck_characteristics,
422 &at91sam9260_mck_lock);
423 if (IS_ERR(hw))
424 goto err_free;
425
426 hw = at91_clk_register_master_div(regmap, "masterck_div",
427 "masterck_pres", NULL,
428 &at91rm9200_master_layout,
429 data->mck_characteristics,
430 &at91sam9260_mck_lock,
431 CLK_SET_RATE_GATE, 0);
432 if (IS_ERR(hw))
433 goto err_free;
434
435 at91sam9260_pmc->chws[PMC_MCK] = hw;
436
437 hw = at91rm9200_clk_register_usb(regmap, "usbck", "pllbck", usb_div);
438 if (IS_ERR(hw))
439 goto err_free;
440
441 parent_names[0] = slck_name;
442 parent_names[1] = "mainck";
443 parent_names[2] = "pllack";
444 parent_names[3] = "pllbck";
445 for (i = 0; i < data->num_progck; i++) {
446 char name[6];
447
448 snprintf(name, sizeof(name), "prog%d", i);
449
450 hw = at91_clk_register_programmable(regmap, name,
451 parent_names, NULL, 4, i,
452 &at91rm9200_programmable_layout,
453 NULL);
454 if (IS_ERR(hw))
455 goto err_free;
456
457 at91sam9260_pmc->pchws[i] = hw;
458 }
459
460 for (i = 0; i < data->num_sck; i++) {
461 hw = at91_clk_register_system(regmap, data->sck[i].n,
462 data->sck[i].p, NULL,
463 data->sck[i].id, 0);
464 if (IS_ERR(hw))
465 goto err_free;
466
467 at91sam9260_pmc->shws[data->sck[i].id] = hw;
468 }
469
470 for (i = 0; i < data->num_pck; i++) {
471 hw = at91_clk_register_peripheral(regmap,
472 data->pck[i].n,
473 "masterck_div", NULL,
474 data->pck[i].id);
475 if (IS_ERR(hw))
476 goto err_free;
477
478 at91sam9260_pmc->phws[data->pck[i].id] = hw;
479 }
480
481 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, at91sam9260_pmc);
482
483 return;
484
485err_free:
486 kfree(at91sam9260_pmc);
487}
488
489static void __init at91sam9260_pmc_setup(struct device_node *np)
490{
491 at91sam926x_pmc_setup(np, &at91sam9260_data);
492}
493
494CLK_OF_DECLARE(at91sam9260_pmc, "atmel,at91sam9260-pmc", at91sam9260_pmc_setup);
495
496static void __init at91sam9261_pmc_setup(struct device_node *np)
497{
498 at91sam926x_pmc_setup(np, &at91sam9261_data);
499}
500
501CLK_OF_DECLARE(at91sam9261_pmc, "atmel,at91sam9261-pmc", at91sam9261_pmc_setup);
502
503static void __init at91sam9263_pmc_setup(struct device_node *np)
504{
505 at91sam926x_pmc_setup(np, &at91sam9263_data);
506}
507
508CLK_OF_DECLARE(at91sam9263_pmc, "atmel,at91sam9263-pmc", at91sam9263_pmc_setup);
509
510static void __init at91sam9g20_pmc_setup(struct device_node *np)
511{
512 at91sam926x_pmc_setup(np, &at91sam9g20_data);
513}
514
515CLK_OF_DECLARE(at91sam9g20_pmc, "atmel,at91sam9g20-pmc", at91sam9g20_pmc_setup);