selftests/vm: fix building protection keys test
[linux-2.6-microblaze.git] / drivers / clk / clk-qoriq.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright 2013 Freescale Semiconductor, Inc.
4  *
5  * clock driver for Freescale QorIQ SoCs.
6  */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <dt-bindings/clock/fsl,qoriq-clockgen.h>
11 #include <linux/clk.h>
12 #include <linux/clk-provider.h>
13 #include <linux/clkdev.h>
14 #include <linux/fsl/guts.h>
15 #include <linux/io.h>
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/of_address.h>
19 #include <linux/of_platform.h>
20 #include <linux/of.h>
21 #include <linux/slab.h>
22
23 #define PLL_DIV1        0
24 #define PLL_DIV2        1
25 #define PLL_DIV3        2
26 #define PLL_DIV4        3
27
28 #define PLATFORM_PLL    0
29 #define CGA_PLL1        1
30 #define CGA_PLL2        2
31 #define CGA_PLL3        3
32 #define CGA_PLL4        4       /* only on clockgen-1.0, which lacks CGB */
33 #define CGB_PLL1        4
34 #define CGB_PLL2        5
35 #define MAX_PLL_DIV     32
36
37 struct clockgen_pll_div {
38         struct clk *clk;
39         char name[32];
40 };
41
42 struct clockgen_pll {
43         struct clockgen_pll_div div[MAX_PLL_DIV];
44 };
45
46 #define CLKSEL_VALID    1
47 #define CLKSEL_80PCT    2       /* Only allowed if PLL <= 80% of max cpu freq */
48
49 struct clockgen_sourceinfo {
50         u32 flags;      /* CLKSEL_xxx */
51         int pll;        /* CGx_PLLn */
52         int div;        /* PLL_DIVn */
53 };
54
55 #define NUM_MUX_PARENTS 16
56
57 struct clockgen_muxinfo {
58         struct clockgen_sourceinfo clksel[NUM_MUX_PARENTS];
59 };
60
61 #define NUM_HWACCEL     5
62 #define NUM_CMUX        8
63
64 struct clockgen;
65
66 /*
67  * cmux freq must be >= platform pll.
68  * If not set, cmux freq must be >= platform pll/2
69  */
70 #define CG_CMUX_GE_PLAT         1
71
72 #define CG_PLL_8BIT             2       /* PLLCnGSR[CFG] is 8 bits, not 6 */
73 #define CG_VER3                 4       /* version 3 cg: reg layout different */
74 #define CG_LITTLE_ENDIAN        8
75
76 struct clockgen_chipinfo {
77         const char *compat, *guts_compat;
78         const struct clockgen_muxinfo *cmux_groups[2];
79         const struct clockgen_muxinfo *hwaccel[NUM_HWACCEL];
80         void (*init_periph)(struct clockgen *cg);
81         int cmux_to_group[NUM_CMUX + 1]; /* array should be -1 terminated */
82         u32 pll_mask;   /* 1 << n bit set if PLL n is valid */
83         u32 flags;      /* CG_xxx */
84 };
85
86 struct clockgen {
87         struct device_node *node;
88         void __iomem *regs;
89         struct clockgen_chipinfo info; /* mutable copy */
90         struct clk *sysclk, *coreclk;
91         struct clockgen_pll pll[6];
92         struct clk *cmux[NUM_CMUX];
93         struct clk *hwaccel[NUM_HWACCEL];
94         struct clk *fman[2];
95         struct ccsr_guts __iomem *guts;
96 };
97
98 static struct clockgen clockgen;
99 static bool add_cpufreq_dev __initdata;
100
101 static void cg_out(struct clockgen *cg, u32 val, u32 __iomem *reg)
102 {
103         if (cg->info.flags & CG_LITTLE_ENDIAN)
104                 iowrite32(val, reg);
105         else
106                 iowrite32be(val, reg);
107 }
108
109 static u32 cg_in(struct clockgen *cg, u32 __iomem *reg)
110 {
111         u32 val;
112
113         if (cg->info.flags & CG_LITTLE_ENDIAN)
114                 val = ioread32(reg);
115         else
116                 val = ioread32be(reg);
117
118         return val;
119 }
120
121 static const struct clockgen_muxinfo p2041_cmux_grp1 = {
122         {
123                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
124                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
125                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
126         }
127 };
128
129 static const struct clockgen_muxinfo p2041_cmux_grp2 = {
130         {
131                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
132                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
133                 [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
134         }
135 };
136
137 static const struct clockgen_muxinfo p5020_cmux_grp1 = {
138         {
139                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
140                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
141                 [4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
142         }
143 };
144
145 static const struct clockgen_muxinfo p5020_cmux_grp2 = {
146         {
147                 [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
148                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
149                 [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
150         }
151 };
152
153 static const struct clockgen_muxinfo p5040_cmux_grp1 = {
154         {
155                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
156                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
157                 [4] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV1 },
158                 [5] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL2, PLL_DIV2 },
159         }
160 };
161
162 static const struct clockgen_muxinfo p5040_cmux_grp2 = {
163         {
164                 [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
165                 [1] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV2 },
166                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
167                 [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
168         }
169 };
170
171 static const struct clockgen_muxinfo p4080_cmux_grp1 = {
172         {
173                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
174                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
175                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
176                 [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
177                 [8] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL3, PLL_DIV1 },
178         }
179 };
180
181 static const struct clockgen_muxinfo p4080_cmux_grp2 = {
182         {
183                 [0] = { CLKSEL_VALID | CLKSEL_80PCT, CGA_PLL1, PLL_DIV1 },
184                 [8] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
185                 [9] = { CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
186                 [12] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV1 },
187                 [13] = { CLKSEL_VALID, CGA_PLL4, PLL_DIV2 },
188         }
189 };
190
191 static const struct clockgen_muxinfo t1023_cmux = {
192         {
193                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
194                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
195         }
196 };
197
198 static const struct clockgen_muxinfo t1040_cmux = {
199         {
200                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
201                 [1] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
202                 [4] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
203                 [5] = { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
204         }
205 };
206
207
208 static const struct clockgen_muxinfo clockgen2_cmux_cga = {
209         {
210                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
211                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
212                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
213                 {},
214                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
215                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
216                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
217                 {},
218                 { CLKSEL_VALID, CGA_PLL3, PLL_DIV1 },
219                 { CLKSEL_VALID, CGA_PLL3, PLL_DIV2 },
220                 { CLKSEL_VALID, CGA_PLL3, PLL_DIV4 },
221         },
222 };
223
224 static const struct clockgen_muxinfo clockgen2_cmux_cga12 = {
225         {
226                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
227                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
228                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
229                 {},
230                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
231                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
232                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
233         },
234 };
235
236 static const struct clockgen_muxinfo clockgen2_cmux_cgb = {
237         {
238                 { CLKSEL_VALID, CGB_PLL1, PLL_DIV1 },
239                 { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
240                 { CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
241                 {},
242                 { CLKSEL_VALID, CGB_PLL2, PLL_DIV1 },
243                 { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
244                 { CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
245         },
246 };
247
248 static const struct clockgen_muxinfo ls1021a_cmux = {
249         {
250                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
251                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
252                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
253         }
254 };
255
256 static const struct clockgen_muxinfo ls1028a_hwa1 = {
257         {
258                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
259                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
260                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
261                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
262                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
263                 {},
264                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
265                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
266         },
267 };
268
269 static const struct clockgen_muxinfo ls1028a_hwa2 = {
270         {
271                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
272                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
273                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
274                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
275                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
276                 {},
277                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
278                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
279         },
280 };
281
282 static const struct clockgen_muxinfo ls1028a_hwa3 = {
283         {
284                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
285                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
286                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
287                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
288                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
289                 {},
290                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
291                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
292         },
293 };
294
295 static const struct clockgen_muxinfo ls1028a_hwa4 = {
296         {
297                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
298                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
299                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
300                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
301                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
302                 {},
303                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
304                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
305         },
306 };
307
308 static const struct clockgen_muxinfo ls1043a_hwa1 = {
309         {
310                 {},
311                 {},
312                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
313                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
314                 {},
315                 {},
316                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
317                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
318         },
319 };
320
321 static const struct clockgen_muxinfo ls1043a_hwa2 = {
322         {
323                 {},
324                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
325                 {},
326                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
327         },
328 };
329
330 static const struct clockgen_muxinfo ls1046a_hwa1 = {
331         {
332                 {},
333                 {},
334                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
335                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
336                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
337                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
338                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
339                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
340         },
341 };
342
343 static const struct clockgen_muxinfo ls1046a_hwa2 = {
344         {
345                 {},
346                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
347                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
348                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
349                 {},
350                 {},
351                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
352         },
353 };
354
355 static const struct clockgen_muxinfo ls1088a_hwa1 = {
356         {
357                 {},
358                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
359                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
360                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
361                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
362                 {},
363                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
364                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
365         },
366 };
367
368 static const struct clockgen_muxinfo ls1088a_hwa2 = {
369         {
370                 {},
371                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
372                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
373                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
374                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
375                 {},
376                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
377                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
378         },
379 };
380
381 static const struct clockgen_muxinfo ls1012a_cmux = {
382         {
383                 [0] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
384                 {},
385                 [2] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
386         }
387 };
388
389 static const struct clockgen_muxinfo t1023_hwa1 = {
390         {
391                 {},
392                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
393                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
394                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
395         },
396 };
397
398 static const struct clockgen_muxinfo t1023_hwa2 = {
399         {
400                 [6] = { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
401         },
402 };
403
404 static const struct clockgen_muxinfo t2080_hwa1 = {
405         {
406                 {},
407                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
408                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
409                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
410                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
411                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
412                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
413                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
414         },
415 };
416
417 static const struct clockgen_muxinfo t2080_hwa2 = {
418         {
419                 {},
420                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV1 },
421                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
422                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
423                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV4 },
424                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
425                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
426                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
427         },
428 };
429
430 static const struct clockgen_muxinfo t4240_hwa1 = {
431         {
432                 { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV2 },
433                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV1 },
434                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV2 },
435                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV3 },
436                 { CLKSEL_VALID, CGA_PLL1, PLL_DIV4 },
437                 {},
438                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV2 },
439                 { CLKSEL_VALID, CGA_PLL2, PLL_DIV3 },
440         },
441 };
442
443 static const struct clockgen_muxinfo t4240_hwa4 = {
444         {
445                 [2] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
446                 [3] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
447                 [4] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV4 },
448                 [5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
449                 [6] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
450         },
451 };
452
453 static const struct clockgen_muxinfo t4240_hwa5 = {
454         {
455                 [2] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV2 },
456                 [3] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV3 },
457                 [4] = { CLKSEL_VALID, CGB_PLL2, PLL_DIV4 },
458                 [5] = { CLKSEL_VALID, PLATFORM_PLL, PLL_DIV1 },
459                 [6] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV2 },
460                 [7] = { CLKSEL_VALID, CGB_PLL1, PLL_DIV3 },
461         },
462 };
463
464 #define RCWSR7_FM1_CLK_SEL      0x40000000
465 #define RCWSR7_FM2_CLK_SEL      0x20000000
466 #define RCWSR7_HWA_ASYNC_DIV    0x04000000
467
468 static void __init p2041_init_periph(struct clockgen *cg)
469 {
470         u32 reg;
471
472         reg = ioread32be(&cg->guts->rcwsr[7]);
473
474         if (reg & RCWSR7_FM1_CLK_SEL)
475                 cg->fman[0] = cg->pll[CGA_PLL2].div[PLL_DIV2].clk;
476         else
477                 cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
478 }
479
480 static void __init p4080_init_periph(struct clockgen *cg)
481 {
482         u32 reg;
483
484         reg = ioread32be(&cg->guts->rcwsr[7]);
485
486         if (reg & RCWSR7_FM1_CLK_SEL)
487                 cg->fman[0] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
488         else
489                 cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
490
491         if (reg & RCWSR7_FM2_CLK_SEL)
492                 cg->fman[1] = cg->pll[CGA_PLL3].div[PLL_DIV2].clk;
493         else
494                 cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
495 }
496
497 static void __init p5020_init_periph(struct clockgen *cg)
498 {
499         u32 reg;
500         int div = PLL_DIV2;
501
502         reg = ioread32be(&cg->guts->rcwsr[7]);
503         if (reg & RCWSR7_HWA_ASYNC_DIV)
504                 div = PLL_DIV4;
505
506         if (reg & RCWSR7_FM1_CLK_SEL)
507                 cg->fman[0] = cg->pll[CGA_PLL2].div[div].clk;
508         else
509                 cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
510 }
511
512 static void __init p5040_init_periph(struct clockgen *cg)
513 {
514         u32 reg;
515         int div = PLL_DIV2;
516
517         reg = ioread32be(&cg->guts->rcwsr[7]);
518         if (reg & RCWSR7_HWA_ASYNC_DIV)
519                 div = PLL_DIV4;
520
521         if (reg & RCWSR7_FM1_CLK_SEL)
522                 cg->fman[0] = cg->pll[CGA_PLL3].div[div].clk;
523         else
524                 cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
525
526         if (reg & RCWSR7_FM2_CLK_SEL)
527                 cg->fman[1] = cg->pll[CGA_PLL3].div[div].clk;
528         else
529                 cg->fman[1] = cg->pll[PLATFORM_PLL].div[PLL_DIV2].clk;
530 }
531
532 static void __init t1023_init_periph(struct clockgen *cg)
533 {
534         cg->fman[0] = cg->hwaccel[1];
535 }
536
537 static void __init t1040_init_periph(struct clockgen *cg)
538 {
539         cg->fman[0] = cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk;
540 }
541
542 static void __init t2080_init_periph(struct clockgen *cg)
543 {
544         cg->fman[0] = cg->hwaccel[0];
545 }
546
547 static void __init t4240_init_periph(struct clockgen *cg)
548 {
549         cg->fman[0] = cg->hwaccel[3];
550         cg->fman[1] = cg->hwaccel[4];
551 }
552
553 static const struct clockgen_chipinfo chipinfo[] = {
554         {
555                 .compat = "fsl,b4420-clockgen",
556                 .guts_compat = "fsl,b4860-device-config",
557                 .init_periph = t2080_init_periph,
558                 .cmux_groups = {
559                         &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
560                 },
561                 .hwaccel = {
562                         &t2080_hwa1
563                 },
564                 .cmux_to_group = {
565                         0, 1, 1, 1, -1
566                 },
567                 .pll_mask = 0x3f,
568                 .flags = CG_PLL_8BIT,
569         },
570         {
571                 .compat = "fsl,b4860-clockgen",
572                 .guts_compat = "fsl,b4860-device-config",
573                 .init_periph = t2080_init_periph,
574                 .cmux_groups = {
575                         &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
576                 },
577                 .hwaccel = {
578                         &t2080_hwa1
579                 },
580                 .cmux_to_group = {
581                         0, 1, 1, 1, -1
582                 },
583                 .pll_mask = 0x3f,
584                 .flags = CG_PLL_8BIT,
585         },
586         {
587                 .compat = "fsl,ls1021a-clockgen",
588                 .cmux_groups = {
589                         &ls1021a_cmux
590                 },
591                 .cmux_to_group = {
592                         0, -1
593                 },
594                 .pll_mask = 0x03,
595         },
596         {
597                 .compat = "fsl,ls1028a-clockgen",
598                 .cmux_groups = {
599                         &clockgen2_cmux_cga12
600                 },
601                 .hwaccel = {
602                         &ls1028a_hwa1, &ls1028a_hwa2,
603                         &ls1028a_hwa3, &ls1028a_hwa4
604                 },
605                 .cmux_to_group = {
606                         0, 0, 0, 0, -1
607                 },
608                 .pll_mask = 0x07,
609                 .flags = CG_VER3 | CG_LITTLE_ENDIAN,
610         },
611         {
612                 .compat = "fsl,ls1043a-clockgen",
613                 .init_periph = t2080_init_periph,
614                 .cmux_groups = {
615                         &t1040_cmux
616                 },
617                 .hwaccel = {
618                         &ls1043a_hwa1, &ls1043a_hwa2
619                 },
620                 .cmux_to_group = {
621                         0, -1
622                 },
623                 .pll_mask = 0x07,
624                 .flags = CG_PLL_8BIT,
625         },
626         {
627                 .compat = "fsl,ls1046a-clockgen",
628                 .init_periph = t2080_init_periph,
629                 .cmux_groups = {
630                         &t1040_cmux
631                 },
632                 .hwaccel = {
633                         &ls1046a_hwa1, &ls1046a_hwa2
634                 },
635                 .cmux_to_group = {
636                         0, -1
637                 },
638                 .pll_mask = 0x07,
639                 .flags = CG_PLL_8BIT,
640         },
641         {
642                 .compat = "fsl,ls1088a-clockgen",
643                 .cmux_groups = {
644                         &clockgen2_cmux_cga12
645                 },
646                 .hwaccel = {
647                         &ls1088a_hwa1, &ls1088a_hwa2
648                 },
649                 .cmux_to_group = {
650                         0, 0, -1
651                 },
652                 .pll_mask = 0x07,
653                 .flags = CG_VER3 | CG_LITTLE_ENDIAN,
654         },
655         {
656                 .compat = "fsl,ls1012a-clockgen",
657                 .cmux_groups = {
658                         &ls1012a_cmux
659                 },
660                 .cmux_to_group = {
661                         0, -1
662                 },
663                 .pll_mask = 0x03,
664         },
665         {
666                 .compat = "fsl,ls2080a-clockgen",
667                 .cmux_groups = {
668                         &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
669                 },
670                 .cmux_to_group = {
671                         0, 0, 1, 1, -1
672                 },
673                 .pll_mask = 0x37,
674                 .flags = CG_VER3 | CG_LITTLE_ENDIAN,
675         },
676         {
677                 .compat = "fsl,lx2160a-clockgen",
678                 .cmux_groups = {
679                         &clockgen2_cmux_cga12, &clockgen2_cmux_cgb
680                 },
681                 .cmux_to_group = {
682                         0, 0, 0, 0, 1, 1, 1, 1, -1
683                 },
684                 .pll_mask = 0x37,
685                 .flags = CG_VER3 | CG_LITTLE_ENDIAN,
686         },
687         {
688                 .compat = "fsl,p2041-clockgen",
689                 .guts_compat = "fsl,qoriq-device-config-1.0",
690                 .init_periph = p2041_init_periph,
691                 .cmux_groups = {
692                         &p2041_cmux_grp1, &p2041_cmux_grp2
693                 },
694                 .cmux_to_group = {
695                         0, 0, 1, 1, -1
696                 },
697                 .pll_mask = 0x07,
698         },
699         {
700                 .compat = "fsl,p3041-clockgen",
701                 .guts_compat = "fsl,qoriq-device-config-1.0",
702                 .init_periph = p2041_init_periph,
703                 .cmux_groups = {
704                         &p2041_cmux_grp1, &p2041_cmux_grp2
705                 },
706                 .cmux_to_group = {
707                         0, 0, 1, 1, -1
708                 },
709                 .pll_mask = 0x07,
710         },
711         {
712                 .compat = "fsl,p4080-clockgen",
713                 .guts_compat = "fsl,qoriq-device-config-1.0",
714                 .init_periph = p4080_init_periph,
715                 .cmux_groups = {
716                         &p4080_cmux_grp1, &p4080_cmux_grp2
717                 },
718                 .cmux_to_group = {
719                         0, 0, 0, 0, 1, 1, 1, 1, -1
720                 },
721                 .pll_mask = 0x1f,
722         },
723         {
724                 .compat = "fsl,p5020-clockgen",
725                 .guts_compat = "fsl,qoriq-device-config-1.0",
726                 .init_periph = p5020_init_periph,
727                 .cmux_groups = {
728                         &p5020_cmux_grp1, &p5020_cmux_grp2
729                 },
730                 .cmux_to_group = {
731                         0, 1, -1
732                 },
733                 .pll_mask = 0x07,
734         },
735         {
736                 .compat = "fsl,p5040-clockgen",
737                 .guts_compat = "fsl,p5040-device-config",
738                 .init_periph = p5040_init_periph,
739                 .cmux_groups = {
740                         &p5040_cmux_grp1, &p5040_cmux_grp2
741                 },
742                 .cmux_to_group = {
743                         0, 0, 1, 1, -1
744                 },
745                 .pll_mask = 0x0f,
746         },
747         {
748                 .compat = "fsl,t1023-clockgen",
749                 .guts_compat = "fsl,t1023-device-config",
750                 .init_periph = t1023_init_periph,
751                 .cmux_groups = {
752                         &t1023_cmux
753                 },
754                 .hwaccel = {
755                         &t1023_hwa1, &t1023_hwa2
756                 },
757                 .cmux_to_group = {
758                         0, 0, -1
759                 },
760                 .pll_mask = 0x03,
761                 .flags = CG_PLL_8BIT,
762         },
763         {
764                 .compat = "fsl,t1040-clockgen",
765                 .guts_compat = "fsl,t1040-device-config",
766                 .init_periph = t1040_init_periph,
767                 .cmux_groups = {
768                         &t1040_cmux
769                 },
770                 .cmux_to_group = {
771                         0, 0, 0, 0, -1
772                 },
773                 .pll_mask = 0x07,
774                 .flags = CG_PLL_8BIT,
775         },
776         {
777                 .compat = "fsl,t2080-clockgen",
778                 .guts_compat = "fsl,t2080-device-config",
779                 .init_periph = t2080_init_periph,
780                 .cmux_groups = {
781                         &clockgen2_cmux_cga12
782                 },
783                 .hwaccel = {
784                         &t2080_hwa1, &t2080_hwa2
785                 },
786                 .cmux_to_group = {
787                         0, -1
788                 },
789                 .pll_mask = 0x07,
790                 .flags = CG_PLL_8BIT,
791         },
792         {
793                 .compat = "fsl,t4240-clockgen",
794                 .guts_compat = "fsl,t4240-device-config",
795                 .init_periph = t4240_init_periph,
796                 .cmux_groups = {
797                         &clockgen2_cmux_cga, &clockgen2_cmux_cgb
798                 },
799                 .hwaccel = {
800                         &t4240_hwa1, NULL, NULL, &t4240_hwa4, &t4240_hwa5
801                 },
802                 .cmux_to_group = {
803                         0, 0, 1, -1
804                 },
805                 .pll_mask = 0x3f,
806                 .flags = CG_PLL_8BIT,
807         },
808         {},
809 };
810
811 struct mux_hwclock {
812         struct clk_hw hw;
813         struct clockgen *cg;
814         const struct clockgen_muxinfo *info;
815         u32 __iomem *reg;
816         u8 parent_to_clksel[NUM_MUX_PARENTS];
817         s8 clksel_to_parent[NUM_MUX_PARENTS];
818         int num_parents;
819 };
820
821 #define to_mux_hwclock(p)       container_of(p, struct mux_hwclock, hw)
822 #define CLKSEL_MASK             0x78000000
823 #define CLKSEL_SHIFT            27
824
825 static int mux_set_parent(struct clk_hw *hw, u8 idx)
826 {
827         struct mux_hwclock *hwc = to_mux_hwclock(hw);
828         u32 clksel;
829
830         if (idx >= hwc->num_parents)
831                 return -EINVAL;
832
833         clksel = hwc->parent_to_clksel[idx];
834         cg_out(hwc->cg, (clksel << CLKSEL_SHIFT) & CLKSEL_MASK, hwc->reg);
835
836         return 0;
837 }
838
839 static u8 mux_get_parent(struct clk_hw *hw)
840 {
841         struct mux_hwclock *hwc = to_mux_hwclock(hw);
842         u32 clksel;
843         s8 ret;
844
845         clksel = (cg_in(hwc->cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
846
847         ret = hwc->clksel_to_parent[clksel];
848         if (ret < 0) {
849                 pr_err("%s: mux at %p has bad clksel\n", __func__, hwc->reg);
850                 return 0;
851         }
852
853         return ret;
854 }
855
856 static const struct clk_ops cmux_ops = {
857         .get_parent = mux_get_parent,
858         .set_parent = mux_set_parent,
859 };
860
861 /*
862  * Don't allow setting for now, as the clock options haven't been
863  * sanitized for additional restrictions.
864  */
865 static const struct clk_ops hwaccel_ops = {
866         .get_parent = mux_get_parent,
867 };
868
869 static const struct clockgen_pll_div *get_pll_div(struct clockgen *cg,
870                                                   struct mux_hwclock *hwc,
871                                                   int idx)
872 {
873         int pll, div;
874
875         if (!(hwc->info->clksel[idx].flags & CLKSEL_VALID))
876                 return NULL;
877
878         pll = hwc->info->clksel[idx].pll;
879         div = hwc->info->clksel[idx].div;
880
881         return &cg->pll[pll].div[div];
882 }
883
884 static struct clk * __init create_mux_common(struct clockgen *cg,
885                                              struct mux_hwclock *hwc,
886                                              const struct clk_ops *ops,
887                                              unsigned long min_rate,
888                                              unsigned long max_rate,
889                                              unsigned long pct80_rate,
890                                              const char *fmt, int idx)
891 {
892         struct clk_init_data init = {};
893         struct clk *clk;
894         const struct clockgen_pll_div *div;
895         const char *parent_names[NUM_MUX_PARENTS];
896         char name[32];
897         int i, j;
898
899         snprintf(name, sizeof(name), fmt, idx);
900
901         for (i = 0, j = 0; i < NUM_MUX_PARENTS; i++) {
902                 unsigned long rate;
903
904                 hwc->clksel_to_parent[i] = -1;
905
906                 div = get_pll_div(cg, hwc, i);
907                 if (!div)
908                         continue;
909
910                 rate = clk_get_rate(div->clk);
911
912                 if (hwc->info->clksel[i].flags & CLKSEL_80PCT &&
913                     rate > pct80_rate)
914                         continue;
915                 if (rate < min_rate)
916                         continue;
917                 if (rate > max_rate)
918                         continue;
919
920                 parent_names[j] = div->name;
921                 hwc->parent_to_clksel[j] = i;
922                 hwc->clksel_to_parent[i] = j;
923                 j++;
924         }
925
926         init.name = name;
927         init.ops = ops;
928         init.parent_names = parent_names;
929         init.num_parents = hwc->num_parents = j;
930         init.flags = 0;
931         hwc->hw.init = &init;
932         hwc->cg = cg;
933
934         clk = clk_register(NULL, &hwc->hw);
935         if (IS_ERR(clk)) {
936                 pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
937                        PTR_ERR(clk));
938                 kfree(hwc);
939                 return NULL;
940         }
941
942         return clk;
943 }
944
945 static struct clk * __init create_one_cmux(struct clockgen *cg, int idx)
946 {
947         struct mux_hwclock *hwc;
948         const struct clockgen_pll_div *div;
949         unsigned long plat_rate, min_rate;
950         u64 max_rate, pct80_rate;
951         u32 clksel;
952
953         hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
954         if (!hwc)
955                 return NULL;
956
957         if (cg->info.flags & CG_VER3)
958                 hwc->reg = cg->regs + 0x70000 + 0x20 * idx;
959         else
960                 hwc->reg = cg->regs + 0x20 * idx;
961
962         hwc->info = cg->info.cmux_groups[cg->info.cmux_to_group[idx]];
963
964         /*
965          * Find the rate for the default clksel, and treat it as the
966          * maximum rated core frequency.  If this is an incorrect
967          * assumption, certain clock options (possibly including the
968          * default clksel) may be inappropriately excluded on certain
969          * chips.
970          */
971         clksel = (cg_in(cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
972         div = get_pll_div(cg, hwc, clksel);
973         if (!div) {
974                 kfree(hwc);
975                 return NULL;
976         }
977
978         max_rate = clk_get_rate(div->clk);
979         pct80_rate = max_rate * 8;
980         do_div(pct80_rate, 10);
981
982         plat_rate = clk_get_rate(cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk);
983
984         if (cg->info.flags & CG_CMUX_GE_PLAT)
985                 min_rate = plat_rate;
986         else
987                 min_rate = plat_rate / 2;
988
989         return create_mux_common(cg, hwc, &cmux_ops, min_rate, max_rate,
990                                  pct80_rate, "cg-cmux%d", idx);
991 }
992
993 static struct clk * __init create_one_hwaccel(struct clockgen *cg, int idx)
994 {
995         struct mux_hwclock *hwc;
996
997         hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
998         if (!hwc)
999                 return NULL;
1000
1001         hwc->reg = cg->regs + 0x20 * idx + 0x10;
1002         hwc->info = cg->info.hwaccel[idx];
1003
1004         return create_mux_common(cg, hwc, &hwaccel_ops, 0, ULONG_MAX, 0,
1005                                  "cg-hwaccel%d", idx);
1006 }
1007
1008 static void __init create_muxes(struct clockgen *cg)
1009 {
1010         int i;
1011
1012         for (i = 0; i < ARRAY_SIZE(cg->cmux); i++) {
1013                 if (cg->info.cmux_to_group[i] < 0)
1014                         break;
1015                 if (cg->info.cmux_to_group[i] >=
1016                     ARRAY_SIZE(cg->info.cmux_groups)) {
1017                         WARN_ON_ONCE(1);
1018                         continue;
1019                 }
1020
1021                 cg->cmux[i] = create_one_cmux(cg, i);
1022         }
1023
1024         for (i = 0; i < ARRAY_SIZE(cg->hwaccel); i++) {
1025                 if (!cg->info.hwaccel[i])
1026                         continue;
1027
1028                 cg->hwaccel[i] = create_one_hwaccel(cg, i);
1029         }
1030 }
1031
1032 static void __init _clockgen_init(struct device_node *np, bool legacy);
1033
1034 /*
1035  * Legacy nodes may get probed before the parent clockgen node.
1036  * It is assumed that device trees with legacy nodes will not
1037  * contain a "clocks" property -- otherwise the input clocks may
1038  * not be initialized at this point.
1039  */
1040 static void __init legacy_init_clockgen(struct device_node *np)
1041 {
1042         if (!clockgen.node)
1043                 _clockgen_init(of_get_parent(np), true);
1044 }
1045
1046 /* Legacy node */
1047 static void __init core_mux_init(struct device_node *np)
1048 {
1049         struct clk *clk;
1050         struct resource res;
1051         int idx, rc;
1052
1053         legacy_init_clockgen(np);
1054
1055         if (of_address_to_resource(np, 0, &res))
1056                 return;
1057
1058         idx = (res.start & 0xf0) >> 5;
1059         clk = clockgen.cmux[idx];
1060
1061         rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
1062         if (rc) {
1063                 pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
1064                        __func__, np, rc);
1065                 return;
1066         }
1067 }
1068
1069 static struct clk __init
1070 *sysclk_from_fixed(struct device_node *node, const char *name)
1071 {
1072         u32 rate;
1073
1074         if (of_property_read_u32(node, "clock-frequency", &rate))
1075                 return ERR_PTR(-ENODEV);
1076
1077         return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
1078 }
1079
1080 static struct clk __init *input_clock(const char *name, struct clk *clk)
1081 {
1082         const char *input_name;
1083
1084         /* Register the input clock under the desired name. */
1085         input_name = __clk_get_name(clk);
1086         clk = clk_register_fixed_factor(NULL, name, input_name,
1087                                         0, 1, 1);
1088         if (IS_ERR(clk))
1089                 pr_err("%s: Couldn't register %s: %ld\n", __func__, name,
1090                        PTR_ERR(clk));
1091
1092         return clk;
1093 }
1094
1095 static struct clk __init *input_clock_by_name(const char *name,
1096                                               const char *dtname)
1097 {
1098         struct clk *clk;
1099
1100         clk = of_clk_get_by_name(clockgen.node, dtname);
1101         if (IS_ERR(clk))
1102                 return clk;
1103
1104         return input_clock(name, clk);
1105 }
1106
1107 static struct clk __init *input_clock_by_index(const char *name, int idx)
1108 {
1109         struct clk *clk;
1110
1111         clk = of_clk_get(clockgen.node, 0);
1112         if (IS_ERR(clk))
1113                 return clk;
1114
1115         return input_clock(name, clk);
1116 }
1117
1118 static struct clk * __init create_sysclk(const char *name)
1119 {
1120         struct device_node *sysclk;
1121         struct clk *clk;
1122
1123         clk = sysclk_from_fixed(clockgen.node, name);
1124         if (!IS_ERR(clk))
1125                 return clk;
1126
1127         clk = input_clock_by_name(name, "sysclk");
1128         if (!IS_ERR(clk))
1129                 return clk;
1130
1131         clk = input_clock_by_index(name, 0);
1132         if (!IS_ERR(clk))
1133                 return clk;
1134
1135         sysclk = of_get_child_by_name(clockgen.node, "sysclk");
1136         if (sysclk) {
1137                 clk = sysclk_from_fixed(sysclk, name);
1138                 if (!IS_ERR(clk))
1139                         return clk;
1140         }
1141
1142         pr_err("%s: No input sysclk\n", __func__);
1143         return NULL;
1144 }
1145
1146 static struct clk * __init create_coreclk(const char *name)
1147 {
1148         struct clk *clk;
1149
1150         clk = input_clock_by_name(name, "coreclk");
1151         if (!IS_ERR(clk))
1152                 return clk;
1153
1154         /*
1155          * This indicates a mix of legacy nodes with the new coreclk
1156          * mechanism, which should never happen.  If this error occurs,
1157          * don't use the wrong input clock just because coreclk isn't
1158          * ready yet.
1159          */
1160         if (WARN_ON(PTR_ERR(clk) == -EPROBE_DEFER))
1161                 return clk;
1162
1163         return NULL;
1164 }
1165
1166 /* Legacy node */
1167 static void __init sysclk_init(struct device_node *node)
1168 {
1169         struct clk *clk;
1170
1171         legacy_init_clockgen(node);
1172
1173         clk = clockgen.sysclk;
1174         if (clk)
1175                 of_clk_add_provider(node, of_clk_src_simple_get, clk);
1176 }
1177
1178 #define PLL_KILL BIT(31)
1179
1180 static void __init create_one_pll(struct clockgen *cg, int idx)
1181 {
1182         u32 __iomem *reg;
1183         u32 mult;
1184         struct clockgen_pll *pll = &cg->pll[idx];
1185         const char *input = "cg-sysclk";
1186         int i;
1187
1188         if (!(cg->info.pll_mask & (1 << idx)))
1189                 return;
1190
1191         if (cg->coreclk && idx != PLATFORM_PLL) {
1192                 if (IS_ERR(cg->coreclk))
1193                         return;
1194
1195                 input = "cg-coreclk";
1196         }
1197
1198         if (cg->info.flags & CG_VER3) {
1199                 switch (idx) {
1200                 case PLATFORM_PLL:
1201                         reg = cg->regs + 0x60080;
1202                         break;
1203                 case CGA_PLL1:
1204                         reg = cg->regs + 0x80;
1205                         break;
1206                 case CGA_PLL2:
1207                         reg = cg->regs + 0xa0;
1208                         break;
1209                 case CGB_PLL1:
1210                         reg = cg->regs + 0x10080;
1211                         break;
1212                 case CGB_PLL2:
1213                         reg = cg->regs + 0x100a0;
1214                         break;
1215                 default:
1216                         WARN_ONCE(1, "index %d\n", idx);
1217                         return;
1218                 }
1219         } else {
1220                 if (idx == PLATFORM_PLL)
1221                         reg = cg->regs + 0xc00;
1222                 else
1223                         reg = cg->regs + 0x800 + 0x20 * (idx - 1);
1224         }
1225
1226         /* Get the multiple of PLL */
1227         mult = cg_in(cg, reg);
1228
1229         /* Check if this PLL is disabled */
1230         if (mult & PLL_KILL) {
1231                 pr_debug("%s(): pll %p disabled\n", __func__, reg);
1232                 return;
1233         }
1234
1235         if ((cg->info.flags & CG_VER3) ||
1236             ((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL))
1237                 mult = (mult & GENMASK(8, 1)) >> 1;
1238         else
1239                 mult = (mult & GENMASK(6, 1)) >> 1;
1240
1241         for (i = 0; i < ARRAY_SIZE(pll->div); i++) {
1242                 struct clk *clk;
1243                 int ret;
1244
1245                 /*
1246                  * For platform PLL, there are MAX_PLL_DIV divider clocks.
1247                  * For core PLL, there are 4 divider clocks at most.
1248                  */
1249                 if (idx != PLATFORM_PLL && i >= 4)
1250                         break;
1251
1252                 snprintf(pll->div[i].name, sizeof(pll->div[i].name),
1253                          "cg-pll%d-div%d", idx, i + 1);
1254
1255                 clk = clk_register_fixed_factor(NULL,
1256                                 pll->div[i].name, input, 0, mult, i + 1);
1257                 if (IS_ERR(clk)) {
1258                         pr_err("%s: %s: register failed %ld\n",
1259                                __func__, pll->div[i].name, PTR_ERR(clk));
1260                         continue;
1261                 }
1262
1263                 pll->div[i].clk = clk;
1264                 ret = clk_register_clkdev(clk, pll->div[i].name, NULL);
1265                 if (ret != 0)
1266                         pr_err("%s: %s: register to lookup table failed %d\n",
1267                                __func__, pll->div[i].name, ret);
1268
1269         }
1270 }
1271
1272 static void __init create_plls(struct clockgen *cg)
1273 {
1274         int i;
1275
1276         for (i = 0; i < ARRAY_SIZE(cg->pll); i++)
1277                 create_one_pll(cg, i);
1278 }
1279
1280 static void __init legacy_pll_init(struct device_node *np, int idx)
1281 {
1282         struct clockgen_pll *pll;
1283         struct clk_onecell_data *onecell_data;
1284         struct clk **subclks;
1285         int count, rc;
1286
1287         legacy_init_clockgen(np);
1288
1289         pll = &clockgen.pll[idx];
1290         count = of_property_count_strings(np, "clock-output-names");
1291
1292         BUILD_BUG_ON(ARRAY_SIZE(pll->div) < 4);
1293         subclks = kcalloc(4, sizeof(struct clk *), GFP_KERNEL);
1294         if (!subclks)
1295                 return;
1296
1297         onecell_data = kmalloc(sizeof(*onecell_data), GFP_KERNEL);
1298         if (!onecell_data)
1299                 goto err_clks;
1300
1301         if (count <= 3) {
1302                 subclks[0] = pll->div[0].clk;
1303                 subclks[1] = pll->div[1].clk;
1304                 subclks[2] = pll->div[3].clk;
1305         } else {
1306                 subclks[0] = pll->div[0].clk;
1307                 subclks[1] = pll->div[1].clk;
1308                 subclks[2] = pll->div[2].clk;
1309                 subclks[3] = pll->div[3].clk;
1310         }
1311
1312         onecell_data->clks = subclks;
1313         onecell_data->clk_num = count;
1314
1315         rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
1316         if (rc) {
1317                 pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
1318                        __func__, np, rc);
1319                 goto err_cell;
1320         }
1321
1322         return;
1323 err_cell:
1324         kfree(onecell_data);
1325 err_clks:
1326         kfree(subclks);
1327 }
1328
1329 /* Legacy node */
1330 static void __init pltfrm_pll_init(struct device_node *np)
1331 {
1332         legacy_pll_init(np, PLATFORM_PLL);
1333 }
1334
1335 /* Legacy node */
1336 static void __init core_pll_init(struct device_node *np)
1337 {
1338         struct resource res;
1339         int idx;
1340
1341         if (of_address_to_resource(np, 0, &res))
1342                 return;
1343
1344         if ((res.start & 0xfff) == 0xc00) {
1345                 /*
1346                  * ls1021a devtree labels the platform PLL
1347                  * with the core PLL compatible
1348                  */
1349                 pltfrm_pll_init(np);
1350         } else {
1351                 idx = (res.start & 0xf0) >> 5;
1352                 legacy_pll_init(np, CGA_PLL1 + idx);
1353         }
1354 }
1355
1356 static struct clk *clockgen_clk_get(struct of_phandle_args *clkspec, void *data)
1357 {
1358         struct clockgen *cg = data;
1359         struct clk *clk;
1360         struct clockgen_pll *pll;
1361         u32 type, idx;
1362
1363         if (clkspec->args_count < 2) {
1364                 pr_err("%s: insufficient phandle args\n", __func__);
1365                 return ERR_PTR(-EINVAL);
1366         }
1367
1368         type = clkspec->args[0];
1369         idx = clkspec->args[1];
1370
1371         switch (type) {
1372         case QORIQ_CLK_SYSCLK:
1373                 if (idx != 0)
1374                         goto bad_args;
1375                 clk = cg->sysclk;
1376                 break;
1377         case QORIQ_CLK_CMUX:
1378                 if (idx >= ARRAY_SIZE(cg->cmux))
1379                         goto bad_args;
1380                 clk = cg->cmux[idx];
1381                 break;
1382         case QORIQ_CLK_HWACCEL:
1383                 if (idx >= ARRAY_SIZE(cg->hwaccel))
1384                         goto bad_args;
1385                 clk = cg->hwaccel[idx];
1386                 break;
1387         case QORIQ_CLK_FMAN:
1388                 if (idx >= ARRAY_SIZE(cg->fman))
1389                         goto bad_args;
1390                 clk = cg->fman[idx];
1391                 break;
1392         case QORIQ_CLK_PLATFORM_PLL:
1393                 pll = &cg->pll[PLATFORM_PLL];
1394                 if (idx >= ARRAY_SIZE(pll->div))
1395                         goto bad_args;
1396                 clk = pll->div[idx].clk;
1397                 break;
1398         case QORIQ_CLK_CORECLK:
1399                 if (idx != 0)
1400                         goto bad_args;
1401                 clk = cg->coreclk;
1402                 if (IS_ERR(clk))
1403                         clk = NULL;
1404                 break;
1405         default:
1406                 goto bad_args;
1407         }
1408
1409         if (!clk)
1410                 return ERR_PTR(-ENOENT);
1411         return clk;
1412
1413 bad_args:
1414         pr_err("%s: Bad phandle args %u %u\n", __func__, type, idx);
1415         return ERR_PTR(-EINVAL);
1416 }
1417
1418 #ifdef CONFIG_PPC
1419 #include <asm/mpc85xx.h>
1420
1421 static const u32 a4510_svrs[] __initconst = {
1422         (SVR_P2040 << 8) | 0x10,        /* P2040 1.0 */
1423         (SVR_P2040 << 8) | 0x11,        /* P2040 1.1 */
1424         (SVR_P2041 << 8) | 0x10,        /* P2041 1.0 */
1425         (SVR_P2041 << 8) | 0x11,        /* P2041 1.1 */
1426         (SVR_P3041 << 8) | 0x10,        /* P3041 1.0 */
1427         (SVR_P3041 << 8) | 0x11,        /* P3041 1.1 */
1428         (SVR_P4040 << 8) | 0x20,        /* P4040 2.0 */
1429         (SVR_P4080 << 8) | 0x20,        /* P4080 2.0 */
1430         (SVR_P5010 << 8) | 0x10,        /* P5010 1.0 */
1431         (SVR_P5010 << 8) | 0x20,        /* P5010 2.0 */
1432         (SVR_P5020 << 8) | 0x10,        /* P5020 1.0 */
1433         (SVR_P5021 << 8) | 0x10,        /* P5021 1.0 */
1434         (SVR_P5040 << 8) | 0x10,        /* P5040 1.0 */
1435 };
1436
1437 #define SVR_SECURITY    0x80000 /* The Security (E) bit */
1438
1439 static bool __init has_erratum_a4510(void)
1440 {
1441         u32 svr = mfspr(SPRN_SVR);
1442         int i;
1443
1444         svr &= ~SVR_SECURITY;
1445
1446         for (i = 0; i < ARRAY_SIZE(a4510_svrs); i++) {
1447                 if (svr == a4510_svrs[i])
1448                         return true;
1449         }
1450
1451         return false;
1452 }
1453 #else
1454 static bool __init has_erratum_a4510(void)
1455 {
1456         return false;
1457 }
1458 #endif
1459
1460 static void __init _clockgen_init(struct device_node *np, bool legacy)
1461 {
1462         int i, ret;
1463         bool is_old_ls1021a = false;
1464
1465         /* May have already been called by a legacy probe */
1466         if (clockgen.node)
1467                 return;
1468
1469         clockgen.node = np;
1470         clockgen.regs = of_iomap(np, 0);
1471         if (!clockgen.regs &&
1472             of_device_is_compatible(of_root, "fsl,ls1021a")) {
1473                 /* Compatibility hack for old, broken device trees */
1474                 clockgen.regs = ioremap(0x1ee1000, 0x1000);
1475                 is_old_ls1021a = true;
1476         }
1477         if (!clockgen.regs) {
1478                 pr_err("%s(): %pOFn: of_iomap() failed\n", __func__, np);
1479                 return;
1480         }
1481
1482         for (i = 0; i < ARRAY_SIZE(chipinfo); i++) {
1483                 if (of_device_is_compatible(np, chipinfo[i].compat))
1484                         break;
1485                 if (is_old_ls1021a &&
1486                     !strcmp(chipinfo[i].compat, "fsl,ls1021a-clockgen"))
1487                         break;
1488         }
1489
1490         if (i == ARRAY_SIZE(chipinfo)) {
1491                 pr_err("%s: unknown clockgen node %pOF\n", __func__, np);
1492                 goto err;
1493         }
1494         clockgen.info = chipinfo[i];
1495
1496         if (clockgen.info.guts_compat) {
1497                 struct device_node *guts;
1498
1499                 guts = of_find_compatible_node(NULL, NULL,
1500                                                clockgen.info.guts_compat);
1501                 if (guts) {
1502                         clockgen.guts = of_iomap(guts, 0);
1503                         if (!clockgen.guts) {
1504                                 pr_err("%s: Couldn't map %pOF regs\n", __func__,
1505                                        guts);
1506                         }
1507                         of_node_put(guts);
1508                 }
1509
1510         }
1511
1512         if (has_erratum_a4510())
1513                 clockgen.info.flags |= CG_CMUX_GE_PLAT;
1514
1515         clockgen.sysclk = create_sysclk("cg-sysclk");
1516         clockgen.coreclk = create_coreclk("cg-coreclk");
1517         create_plls(&clockgen);
1518         create_muxes(&clockgen);
1519
1520         if (clockgen.info.init_periph)
1521                 clockgen.info.init_periph(&clockgen);
1522
1523         ret = of_clk_add_provider(np, clockgen_clk_get, &clockgen);
1524         if (ret) {
1525                 pr_err("%s: Couldn't register clk provider for node %pOFn: %d\n",
1526                        __func__, np, ret);
1527         }
1528
1529         /* Don't create cpufreq device for legacy clockgen blocks */
1530         add_cpufreq_dev = !legacy;
1531
1532         return;
1533 err:
1534         iounmap(clockgen.regs);
1535         clockgen.regs = NULL;
1536 }
1537
1538 static void __init clockgen_init(struct device_node *np)
1539 {
1540         _clockgen_init(np, false);
1541 }
1542
1543 static int __init clockgen_cpufreq_init(void)
1544 {
1545         struct platform_device *pdev;
1546
1547         if (add_cpufreq_dev) {
1548                 pdev = platform_device_register_simple("qoriq-cpufreq", -1,
1549                                 NULL, 0);
1550                 if (IS_ERR(pdev))
1551                         pr_err("Couldn't register qoriq-cpufreq err=%ld\n",
1552                                 PTR_ERR(pdev));
1553         }
1554         return 0;
1555 }
1556 device_initcall(clockgen_cpufreq_init);
1557
1558 CLK_OF_DECLARE(qoriq_clockgen_1, "fsl,qoriq-clockgen-1.0", clockgen_init);
1559 CLK_OF_DECLARE(qoriq_clockgen_2, "fsl,qoriq-clockgen-2.0", clockgen_init);
1560 CLK_OF_DECLARE(qoriq_clockgen_b4420, "fsl,b4420-clockgen", clockgen_init);
1561 CLK_OF_DECLARE(qoriq_clockgen_b4860, "fsl,b4860-clockgen", clockgen_init);
1562 CLK_OF_DECLARE(qoriq_clockgen_ls1012a, "fsl,ls1012a-clockgen", clockgen_init);
1563 CLK_OF_DECLARE(qoriq_clockgen_ls1021a, "fsl,ls1021a-clockgen", clockgen_init);
1564 CLK_OF_DECLARE(qoriq_clockgen_ls1028a, "fsl,ls1028a-clockgen", clockgen_init);
1565 CLK_OF_DECLARE(qoriq_clockgen_ls1043a, "fsl,ls1043a-clockgen", clockgen_init);
1566 CLK_OF_DECLARE(qoriq_clockgen_ls1046a, "fsl,ls1046a-clockgen", clockgen_init);
1567 CLK_OF_DECLARE(qoriq_clockgen_ls1088a, "fsl,ls1088a-clockgen", clockgen_init);
1568 CLK_OF_DECLARE(qoriq_clockgen_ls2080a, "fsl,ls2080a-clockgen", clockgen_init);
1569 CLK_OF_DECLARE(qoriq_clockgen_lx2160a, "fsl,lx2160a-clockgen", clockgen_init);
1570 CLK_OF_DECLARE(qoriq_clockgen_p2041, "fsl,p2041-clockgen", clockgen_init);
1571 CLK_OF_DECLARE(qoriq_clockgen_p3041, "fsl,p3041-clockgen", clockgen_init);
1572 CLK_OF_DECLARE(qoriq_clockgen_p4080, "fsl,p4080-clockgen", clockgen_init);
1573 CLK_OF_DECLARE(qoriq_clockgen_p5020, "fsl,p5020-clockgen", clockgen_init);
1574 CLK_OF_DECLARE(qoriq_clockgen_p5040, "fsl,p5040-clockgen", clockgen_init);
1575 CLK_OF_DECLARE(qoriq_clockgen_t1023, "fsl,t1023-clockgen", clockgen_init);
1576 CLK_OF_DECLARE(qoriq_clockgen_t1040, "fsl,t1040-clockgen", clockgen_init);
1577 CLK_OF_DECLARE(qoriq_clockgen_t2080, "fsl,t2080-clockgen", clockgen_init);
1578 CLK_OF_DECLARE(qoriq_clockgen_t4240, "fsl,t4240-clockgen", clockgen_init);
1579
1580 /* Legacy nodes */
1581 CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
1582 CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init);
1583 CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init);
1584 CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init);
1585 CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init);
1586 CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init);
1587 CLK_OF_DECLARE(qoriq_pltfrm_pll_1, "fsl,qoriq-platform-pll-1.0", pltfrm_pll_init);
1588 CLK_OF_DECLARE(qoriq_pltfrm_pll_2, "fsl,qoriq-platform-pll-2.0", pltfrm_pll_init);