blob: da66bde41b5fc9f1aea7692bc2b0a2d778b87fee [file] [log] [blame]
Tom Rini4549e782018-05-06 18:27:01 -04001// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
Patrick Delaunaya6151912018-03-12 10:46:15 +01002/*
3 * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
Patrick Delaunaya6151912018-03-12 10:46:15 +01004 */
5
6#include <common.h>
7#include <clk-uclass.h>
8#include <div64.h>
9#include <dm.h>
10#include <regmap.h>
11#include <spl.h>
12#include <syscon.h>
Simon Glass10453152019-11-14 12:57:30 -070013#include <time.h>
Simon Glass2189d5f2019-11-14 12:57:20 -070014#include <vsprintf.h>
Patrick Delaunaya6151912018-03-12 10:46:15 +010015#include <linux/io.h>
Patrick Delaunay266fa4d2018-03-12 10:46:16 +010016#include <linux/iopoll.h>
Patrick Delaunaya6151912018-03-12 10:46:15 +010017#include <dt-bindings/clock/stm32mp1-clks.h>
Patrick Delaunay266fa4d2018-03-12 10:46:16 +010018#include <dt-bindings/clock/stm32mp1-clksrc.h>
19
Patrick Delaunay4de076e2019-07-30 19:16:55 +020020DECLARE_GLOBAL_DATA_PTR;
21
Patrick Delaunayabf26782019-02-12 11:44:39 +010022#ifndef CONFIG_STM32MP1_TRUSTED
Patrick Delaunay266fa4d2018-03-12 10:46:16 +010023#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
24/* activate clock tree initialization in the driver */
25#define STM32MP1_CLOCK_TREE_INIT
26#endif
Patrick Delaunayabf26782019-02-12 11:44:39 +010027#endif
Patrick Delaunaya6151912018-03-12 10:46:15 +010028
29#define MAX_HSI_HZ 64000000
30
Patrick Delaunay266fa4d2018-03-12 10:46:16 +010031/* TIMEOUT */
32#define TIMEOUT_200MS 200000
33#define TIMEOUT_1S 1000000
34
Patrick Delaunay938e0e32018-03-20 11:41:25 +010035/* STGEN registers */
36#define STGENC_CNTCR 0x00
37#define STGENC_CNTSR 0x04
38#define STGENC_CNTCVL 0x08
39#define STGENC_CNTCVU 0x0C
40#define STGENC_CNTFID0 0x20
41
42#define STGENC_CNTCR_EN BIT(0)
43
Patrick Delaunaya6151912018-03-12 10:46:15 +010044/* RCC registers */
45#define RCC_OCENSETR 0x0C
46#define RCC_OCENCLRR 0x10
47#define RCC_HSICFGR 0x18
48#define RCC_MPCKSELR 0x20
49#define RCC_ASSCKSELR 0x24
50#define RCC_RCK12SELR 0x28
51#define RCC_MPCKDIVR 0x2C
52#define RCC_AXIDIVR 0x30
53#define RCC_APB4DIVR 0x3C
54#define RCC_APB5DIVR 0x40
55#define RCC_RTCDIVR 0x44
56#define RCC_MSSCKSELR 0x48
57#define RCC_PLL1CR 0x80
58#define RCC_PLL1CFGR1 0x84
59#define RCC_PLL1CFGR2 0x88
60#define RCC_PLL1FRACR 0x8C
61#define RCC_PLL1CSGR 0x90
62#define RCC_PLL2CR 0x94
63#define RCC_PLL2CFGR1 0x98
64#define RCC_PLL2CFGR2 0x9C
65#define RCC_PLL2FRACR 0xA0
66#define RCC_PLL2CSGR 0xA4
67#define RCC_I2C46CKSELR 0xC0
68#define RCC_CPERCKSELR 0xD0
69#define RCC_STGENCKSELR 0xD4
70#define RCC_DDRITFCR 0xD8
71#define RCC_BDCR 0x140
72#define RCC_RDLSICR 0x144
73#define RCC_MP_APB4ENSETR 0x200
74#define RCC_MP_APB5ENSETR 0x208
75#define RCC_MP_AHB5ENSETR 0x210
76#define RCC_MP_AHB6ENSETR 0x218
77#define RCC_OCRDYR 0x808
78#define RCC_DBGCFGR 0x80C
79#define RCC_RCK3SELR 0x820
80#define RCC_RCK4SELR 0x824
81#define RCC_MCUDIVR 0x830
82#define RCC_APB1DIVR 0x834
83#define RCC_APB2DIVR 0x838
84#define RCC_APB3DIVR 0x83C
85#define RCC_PLL3CR 0x880
86#define RCC_PLL3CFGR1 0x884
87#define RCC_PLL3CFGR2 0x888
88#define RCC_PLL3FRACR 0x88C
89#define RCC_PLL3CSGR 0x890
90#define RCC_PLL4CR 0x894
91#define RCC_PLL4CFGR1 0x898
92#define RCC_PLL4CFGR2 0x89C
93#define RCC_PLL4FRACR 0x8A0
94#define RCC_PLL4CSGR 0x8A4
95#define RCC_I2C12CKSELR 0x8C0
96#define RCC_I2C35CKSELR 0x8C4
Patrice Chotard248278d2019-04-30 18:08:27 +020097#define RCC_SPI2S1CKSELR 0x8D8
Patrick Delaunaya6151912018-03-12 10:46:15 +010098#define RCC_UART6CKSELR 0x8E4
99#define RCC_UART24CKSELR 0x8E8
100#define RCC_UART35CKSELR 0x8EC
101#define RCC_UART78CKSELR 0x8F0
102#define RCC_SDMMC12CKSELR 0x8F4
103#define RCC_SDMMC3CKSELR 0x8F8
104#define RCC_ETHCKSELR 0x8FC
105#define RCC_QSPICKSELR 0x900
106#define RCC_FMCCKSELR 0x904
107#define RCC_USBCKSELR 0x91C
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200108#define RCC_DSICKSELR 0x924
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200109#define RCC_ADCCKSELR 0x928
Patrick Delaunaya6151912018-03-12 10:46:15 +0100110#define RCC_MP_APB1ENSETR 0xA00
111#define RCC_MP_APB2ENSETR 0XA08
Fabrice Gasnierf198bba2018-04-26 17:00:47 +0200112#define RCC_MP_APB3ENSETR 0xA10
Patrick Delaunaya6151912018-03-12 10:46:15 +0100113#define RCC_MP_AHB2ENSETR 0xA18
Benjamin Gaignard283bcd92018-11-27 13:49:51 +0100114#define RCC_MP_AHB3ENSETR 0xA20
Patrick Delaunaya6151912018-03-12 10:46:15 +0100115#define RCC_MP_AHB4ENSETR 0xA28
116
117/* used for most of SELR register */
118#define RCC_SELR_SRC_MASK GENMASK(2, 0)
119#define RCC_SELR_SRCRDY BIT(31)
120
121/* Values of RCC_MPCKSELR register */
122#define RCC_MPCKSELR_HSI 0
123#define RCC_MPCKSELR_HSE 1
124#define RCC_MPCKSELR_PLL 2
125#define RCC_MPCKSELR_PLL_MPUDIV 3
126
127/* Values of RCC_ASSCKSELR register */
128#define RCC_ASSCKSELR_HSI 0
129#define RCC_ASSCKSELR_HSE 1
130#define RCC_ASSCKSELR_PLL 2
131
132/* Values of RCC_MSSCKSELR register */
133#define RCC_MSSCKSELR_HSI 0
134#define RCC_MSSCKSELR_HSE 1
135#define RCC_MSSCKSELR_CSI 2
136#define RCC_MSSCKSELR_PLL 3
137
138/* Values of RCC_CPERCKSELR register */
139#define RCC_CPERCKSELR_HSI 0
140#define RCC_CPERCKSELR_CSI 1
141#define RCC_CPERCKSELR_HSE 2
142
143/* used for most of DIVR register : max div for RTC */
144#define RCC_DIVR_DIV_MASK GENMASK(5, 0)
145#define RCC_DIVR_DIVRDY BIT(31)
146
147/* Masks for specific DIVR registers */
148#define RCC_APBXDIV_MASK GENMASK(2, 0)
149#define RCC_MPUDIV_MASK GENMASK(2, 0)
150#define RCC_AXIDIV_MASK GENMASK(2, 0)
151#define RCC_MCUDIV_MASK GENMASK(3, 0)
152
153/* offset between RCC_MP_xxxENSETR and RCC_MP_xxxENCLRR registers */
154#define RCC_MP_ENCLRR_OFFSET 4
155
156/* Fields of RCC_BDCR register */
157#define RCC_BDCR_LSEON BIT(0)
158#define RCC_BDCR_LSEBYP BIT(1)
159#define RCC_BDCR_LSERDY BIT(2)
Patrick Delaunayd2194152018-07-16 10:41:46 +0200160#define RCC_BDCR_DIGBYP BIT(3)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100161#define RCC_BDCR_LSEDRV_MASK GENMASK(5, 4)
162#define RCC_BDCR_LSEDRV_SHIFT 4
163#define RCC_BDCR_LSECSSON BIT(8)
164#define RCC_BDCR_RTCCKEN BIT(20)
165#define RCC_BDCR_RTCSRC_MASK GENMASK(17, 16)
166#define RCC_BDCR_RTCSRC_SHIFT 16
167
168/* Fields of RCC_RDLSICR register */
169#define RCC_RDLSICR_LSION BIT(0)
170#define RCC_RDLSICR_LSIRDY BIT(1)
171
172/* used for ALL PLLNCR registers */
173#define RCC_PLLNCR_PLLON BIT(0)
174#define RCC_PLLNCR_PLLRDY BIT(1)
Patrick Delaunaybbd108a2019-01-30 13:07:06 +0100175#define RCC_PLLNCR_SSCG_CTRL BIT(2)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100176#define RCC_PLLNCR_DIVPEN BIT(4)
177#define RCC_PLLNCR_DIVQEN BIT(5)
178#define RCC_PLLNCR_DIVREN BIT(6)
179#define RCC_PLLNCR_DIVEN_SHIFT 4
180
181/* used for ALL PLLNCFGR1 registers */
182#define RCC_PLLNCFGR1_DIVM_SHIFT 16
183#define RCC_PLLNCFGR1_DIVM_MASK GENMASK(21, 16)
184#define RCC_PLLNCFGR1_DIVN_SHIFT 0
185#define RCC_PLLNCFGR1_DIVN_MASK GENMASK(8, 0)
186/* only for PLL3 and PLL4 */
187#define RCC_PLLNCFGR1_IFRGE_SHIFT 24
188#define RCC_PLLNCFGR1_IFRGE_MASK GENMASK(25, 24)
189
Patrick Delaunayc2fa5dc2018-07-16 10:41:41 +0200190/* used for ALL PLLNCFGR2 registers , using stm32mp1_div_id */
191#define RCC_PLLNCFGR2_SHIFT(div_id) ((div_id) * 8)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100192#define RCC_PLLNCFGR2_DIVX_MASK GENMASK(6, 0)
Patrick Delaunayc2fa5dc2018-07-16 10:41:41 +0200193#define RCC_PLLNCFGR2_DIVP_SHIFT RCC_PLLNCFGR2_SHIFT(_DIV_P)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100194#define RCC_PLLNCFGR2_DIVP_MASK GENMASK(6, 0)
Patrick Delaunayc2fa5dc2018-07-16 10:41:41 +0200195#define RCC_PLLNCFGR2_DIVQ_SHIFT RCC_PLLNCFGR2_SHIFT(_DIV_Q)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100196#define RCC_PLLNCFGR2_DIVQ_MASK GENMASK(14, 8)
Patrick Delaunayc2fa5dc2018-07-16 10:41:41 +0200197#define RCC_PLLNCFGR2_DIVR_SHIFT RCC_PLLNCFGR2_SHIFT(_DIV_R)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100198#define RCC_PLLNCFGR2_DIVR_MASK GENMASK(22, 16)
199
200/* used for ALL PLLNFRACR registers */
201#define RCC_PLLNFRACR_FRACV_SHIFT 3
202#define RCC_PLLNFRACR_FRACV_MASK GENMASK(15, 3)
203#define RCC_PLLNFRACR_FRACLE BIT(16)
204
205/* used for ALL PLLNCSGR registers */
206#define RCC_PLLNCSGR_INC_STEP_SHIFT 16
207#define RCC_PLLNCSGR_INC_STEP_MASK GENMASK(30, 16)
208#define RCC_PLLNCSGR_MOD_PER_SHIFT 0
209#define RCC_PLLNCSGR_MOD_PER_MASK GENMASK(12, 0)
210#define RCC_PLLNCSGR_SSCG_MODE_SHIFT 15
211#define RCC_PLLNCSGR_SSCG_MODE_MASK BIT(15)
212
213/* used for RCC_OCENSETR and RCC_OCENCLRR registers */
214#define RCC_OCENR_HSION BIT(0)
215#define RCC_OCENR_CSION BIT(4)
Patrick Delaunayd2194152018-07-16 10:41:46 +0200216#define RCC_OCENR_DIGBYP BIT(7)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100217#define RCC_OCENR_HSEON BIT(8)
218#define RCC_OCENR_HSEBYP BIT(10)
219#define RCC_OCENR_HSECSSON BIT(11)
220
221/* Fields of RCC_OCRDYR register */
222#define RCC_OCRDYR_HSIRDY BIT(0)
223#define RCC_OCRDYR_HSIDIVRDY BIT(2)
224#define RCC_OCRDYR_CSIRDY BIT(4)
225#define RCC_OCRDYR_HSERDY BIT(8)
226
227/* Fields of DDRITFCR register */
228#define RCC_DDRITFCR_DDRCKMOD_MASK GENMASK(22, 20)
229#define RCC_DDRITFCR_DDRCKMOD_SHIFT 20
230#define RCC_DDRITFCR_DDRCKMOD_SSR 0
231
232/* Fields of RCC_HSICFGR register */
233#define RCC_HSICFGR_HSIDIV_MASK GENMASK(1, 0)
234
235/* used for MCO related operations */
236#define RCC_MCOCFG_MCOON BIT(12)
237#define RCC_MCOCFG_MCODIV_MASK GENMASK(7, 4)
238#define RCC_MCOCFG_MCODIV_SHIFT 4
239#define RCC_MCOCFG_MCOSRC_MASK GENMASK(2, 0)
240
241enum stm32mp1_parent_id {
242/*
243 * _HSI, _HSE, _CSI, _LSI, _LSE should not be moved
244 * they are used as index in osc[] as entry point
245 */
246 _HSI,
247 _HSE,
248 _CSI,
249 _LSI,
250 _LSE,
251 _I2S_CKIN,
Patrick Delaunaya6151912018-03-12 10:46:15 +0100252 NB_OSC,
253
254/* other parent source */
255 _HSI_KER = NB_OSC,
256 _HSE_KER,
257 _HSE_KER_DIV2,
258 _CSI_KER,
259 _PLL1_P,
260 _PLL1_Q,
261 _PLL1_R,
262 _PLL2_P,
263 _PLL2_Q,
264 _PLL2_R,
265 _PLL3_P,
266 _PLL3_Q,
267 _PLL3_R,
268 _PLL4_P,
269 _PLL4_Q,
270 _PLL4_R,
271 _ACLK,
272 _PCLK1,
273 _PCLK2,
274 _PCLK3,
275 _PCLK4,
276 _PCLK5,
277 _HCLK6,
278 _HCLK2,
279 _CK_PER,
280 _CK_MPU,
281 _CK_MCU,
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200282 _DSI_PHY,
Patrick Delaunay86617dd2019-01-30 13:07:00 +0100283 _USB_PHY_48,
Patrick Delaunaya6151912018-03-12 10:46:15 +0100284 _PARENT_NB,
285 _UNKNOWN_ID = 0xff,
286};
287
288enum stm32mp1_parent_sel {
289 _I2C12_SEL,
290 _I2C35_SEL,
291 _I2C46_SEL,
292 _UART6_SEL,
293 _UART24_SEL,
294 _UART35_SEL,
295 _UART78_SEL,
296 _SDMMC12_SEL,
297 _SDMMC3_SEL,
298 _ETH_SEL,
299 _QSPI_SEL,
300 _FMC_SEL,
301 _USBPHY_SEL,
302 _USBO_SEL,
303 _STGEN_SEL,
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200304 _DSI_SEL,
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200305 _ADC12_SEL,
Patrice Chotard248278d2019-04-30 18:08:27 +0200306 _SPI1_SEL,
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200307 _RTC_SEL,
Patrick Delaunaya6151912018-03-12 10:46:15 +0100308 _PARENT_SEL_NB,
309 _UNKNOWN_SEL = 0xff,
310};
311
312enum stm32mp1_pll_id {
313 _PLL1,
314 _PLL2,
315 _PLL3,
316 _PLL4,
317 _PLL_NB
318};
319
320enum stm32mp1_div_id {
321 _DIV_P,
322 _DIV_Q,
323 _DIV_R,
324 _DIV_NB,
325};
326
327enum stm32mp1_clksrc_id {
328 CLKSRC_MPU,
329 CLKSRC_AXI,
330 CLKSRC_MCU,
331 CLKSRC_PLL12,
332 CLKSRC_PLL3,
333 CLKSRC_PLL4,
334 CLKSRC_RTC,
335 CLKSRC_MCO1,
336 CLKSRC_MCO2,
337 CLKSRC_NB
338};
339
340enum stm32mp1_clkdiv_id {
341 CLKDIV_MPU,
342 CLKDIV_AXI,
343 CLKDIV_MCU,
344 CLKDIV_APB1,
345 CLKDIV_APB2,
346 CLKDIV_APB3,
347 CLKDIV_APB4,
348 CLKDIV_APB5,
349 CLKDIV_RTC,
350 CLKDIV_MCO1,
351 CLKDIV_MCO2,
352 CLKDIV_NB
353};
354
355enum stm32mp1_pllcfg {
356 PLLCFG_M,
357 PLLCFG_N,
358 PLLCFG_P,
359 PLLCFG_Q,
360 PLLCFG_R,
361 PLLCFG_O,
362 PLLCFG_NB
363};
364
365enum stm32mp1_pllcsg {
366 PLLCSG_MOD_PER,
367 PLLCSG_INC_STEP,
368 PLLCSG_SSCG_MODE,
369 PLLCSG_NB
370};
371
372enum stm32mp1_plltype {
373 PLL_800,
374 PLL_1600,
375 PLL_TYPE_NB
376};
377
378struct stm32mp1_pll {
379 u8 refclk_min;
380 u8 refclk_max;
381 u8 divn_max;
382};
383
384struct stm32mp1_clk_gate {
385 u16 offset;
386 u8 bit;
387 u8 index;
388 u8 set_clr;
389 u8 sel;
390 u8 fixed;
391};
392
393struct stm32mp1_clk_sel {
394 u16 offset;
395 u8 src;
396 u8 msk;
397 u8 nb_parent;
398 const u8 *parent;
399};
400
401#define REFCLK_SIZE 4
402struct stm32mp1_clk_pll {
403 enum stm32mp1_plltype plltype;
404 u16 rckxselr;
405 u16 pllxcfgr1;
406 u16 pllxcfgr2;
407 u16 pllxfracr;
408 u16 pllxcr;
409 u16 pllxcsgr;
410 u8 refclk[REFCLK_SIZE];
411};
412
413struct stm32mp1_clk_data {
414 const struct stm32mp1_clk_gate *gate;
415 const struct stm32mp1_clk_sel *sel;
416 const struct stm32mp1_clk_pll *pll;
417 const int nb_gate;
418};
419
420struct stm32mp1_clk_priv {
421 fdt_addr_t base;
422 const struct stm32mp1_clk_data *data;
423 ulong osc[NB_OSC];
424 struct udevice *osc_dev[NB_OSC];
425};
426
427#define STM32MP1_CLK(off, b, idx, s) \
428 { \
429 .offset = (off), \
430 .bit = (b), \
431 .index = (idx), \
432 .set_clr = 0, \
433 .sel = (s), \
434 .fixed = _UNKNOWN_ID, \
435 }
436
437#define STM32MP1_CLK_F(off, b, idx, f) \
438 { \
439 .offset = (off), \
440 .bit = (b), \
441 .index = (idx), \
442 .set_clr = 0, \
443 .sel = _UNKNOWN_SEL, \
444 .fixed = (f), \
445 }
446
447#define STM32MP1_CLK_SET_CLR(off, b, idx, s) \
448 { \
449 .offset = (off), \
450 .bit = (b), \
451 .index = (idx), \
452 .set_clr = 1, \
453 .sel = (s), \
454 .fixed = _UNKNOWN_ID, \
455 }
456
457#define STM32MP1_CLK_SET_CLR_F(off, b, idx, f) \
458 { \
459 .offset = (off), \
460 .bit = (b), \
461 .index = (idx), \
462 .set_clr = 1, \
463 .sel = _UNKNOWN_SEL, \
464 .fixed = (f), \
465 }
466
467#define STM32MP1_CLK_PARENT(idx, off, s, m, p) \
468 [(idx)] = { \
469 .offset = (off), \
470 .src = (s), \
471 .msk = (m), \
472 .parent = (p), \
473 .nb_parent = ARRAY_SIZE((p)) \
474 }
475
476#define STM32MP1_CLK_PLL(idx, type, off1, off2, off3, off4, off5, off6,\
477 p1, p2, p3, p4) \
478 [(idx)] = { \
479 .plltype = (type), \
480 .rckxselr = (off1), \
481 .pllxcfgr1 = (off2), \
482 .pllxcfgr2 = (off3), \
483 .pllxfracr = (off4), \
484 .pllxcr = (off5), \
485 .pllxcsgr = (off6), \
486 .refclk[0] = (p1), \
487 .refclk[1] = (p2), \
488 .refclk[2] = (p3), \
489 .refclk[3] = (p4), \
490 }
491
492static const u8 stm32mp1_clks[][2] = {
493 {CK_PER, _CK_PER},
494 {CK_MPU, _CK_MPU},
495 {CK_AXI, _ACLK},
496 {CK_MCU, _CK_MCU},
497 {CK_HSE, _HSE},
498 {CK_CSI, _CSI},
499 {CK_LSI, _LSI},
500 {CK_LSE, _LSE},
501 {CK_HSI, _HSI},
502 {CK_HSE_DIV2, _HSE_KER_DIV2},
503};
504
505static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = {
506 STM32MP1_CLK(RCC_DDRITFCR, 0, DDRC1, _UNKNOWN_SEL),
507 STM32MP1_CLK(RCC_DDRITFCR, 1, DDRC1LP, _UNKNOWN_SEL),
508 STM32MP1_CLK(RCC_DDRITFCR, 2, DDRC2, _UNKNOWN_SEL),
509 STM32MP1_CLK(RCC_DDRITFCR, 3, DDRC2LP, _UNKNOWN_SEL),
510 STM32MP1_CLK_F(RCC_DDRITFCR, 4, DDRPHYC, _PLL2_R),
511 STM32MP1_CLK(RCC_DDRITFCR, 5, DDRPHYCLP, _UNKNOWN_SEL),
512 STM32MP1_CLK(RCC_DDRITFCR, 6, DDRCAPB, _UNKNOWN_SEL),
513 STM32MP1_CLK(RCC_DDRITFCR, 7, DDRCAPBLP, _UNKNOWN_SEL),
514 STM32MP1_CLK(RCC_DDRITFCR, 8, AXIDCG, _UNKNOWN_SEL),
515 STM32MP1_CLK(RCC_DDRITFCR, 9, DDRPHYCAPB, _UNKNOWN_SEL),
516 STM32MP1_CLK(RCC_DDRITFCR, 10, DDRPHYCAPBLP, _UNKNOWN_SEL),
517
518 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 14, USART2_K, _UART24_SEL),
519 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 15, USART3_K, _UART35_SEL),
520 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 16, UART4_K, _UART24_SEL),
521 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 17, UART5_K, _UART35_SEL),
522 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 18, UART7_K, _UART78_SEL),
523 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 19, UART8_K, _UART78_SEL),
524 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 21, I2C1_K, _I2C12_SEL),
525 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 22, I2C2_K, _I2C12_SEL),
526 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 23, I2C3_K, _I2C35_SEL),
527 STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 24, I2C5_K, _I2C35_SEL),
528
Patrice Chotard248278d2019-04-30 18:08:27 +0200529 STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 8, SPI1_K, _SPI1_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100530 STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 13, USART6_K, _UART6_SEL),
531
Fabrice Gasnierf198bba2018-04-26 17:00:47 +0200532 STM32MP1_CLK_SET_CLR_F(RCC_MP_APB3ENSETR, 13, VREF, _PCLK3),
533
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200534 STM32MP1_CLK_SET_CLR_F(RCC_MP_APB4ENSETR, 0, LTDC_PX, _PLL4_Q),
535 STM32MP1_CLK_SET_CLR_F(RCC_MP_APB4ENSETR, 4, DSI_PX, _PLL4_Q),
536 STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 4, DSI_K, _DSI_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100537 STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 8, DDRPERFM, _UNKNOWN_SEL),
538 STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 15, IWDG2, _UNKNOWN_SEL),
539 STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 16, USBPHY_K, _USBPHY_SEL),
540
541 STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 2, I2C4_K, _I2C46_SEL),
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200542 STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 8, RTCAPB, _PCLK5),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100543 STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 20, STGEN_K, _STGEN_SEL),
544
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200545 STM32MP1_CLK_SET_CLR_F(RCC_MP_AHB2ENSETR, 5, ADC12, _HCLK2),
546 STM32MP1_CLK_SET_CLR(RCC_MP_AHB2ENSETR, 5, ADC12_K, _ADC12_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100547 STM32MP1_CLK_SET_CLR(RCC_MP_AHB2ENSETR, 8, USBO_K, _USBO_SEL),
548 STM32MP1_CLK_SET_CLR(RCC_MP_AHB2ENSETR, 16, SDMMC3_K, _SDMMC3_SEL),
549
Benjamin Gaignard283bcd92018-11-27 13:49:51 +0100550 STM32MP1_CLK_SET_CLR(RCC_MP_AHB3ENSETR, 11, HSEM, _UNKNOWN_SEL),
Patrick Delaunayd661f612019-01-30 13:07:01 +0100551 STM32MP1_CLK_SET_CLR(RCC_MP_AHB3ENSETR, 12, IPCC, _UNKNOWN_SEL),
Benjamin Gaignard283bcd92018-11-27 13:49:51 +0100552
Patrick Delaunaya6151912018-03-12 10:46:15 +0100553 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 0, GPIOA, _UNKNOWN_SEL),
554 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 1, GPIOB, _UNKNOWN_SEL),
555 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 2, GPIOC, _UNKNOWN_SEL),
556 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 3, GPIOD, _UNKNOWN_SEL),
557 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 4, GPIOE, _UNKNOWN_SEL),
558 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 5, GPIOF, _UNKNOWN_SEL),
559 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 6, GPIOG, _UNKNOWN_SEL),
560 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 7, GPIOH, _UNKNOWN_SEL),
561 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 8, GPIOI, _UNKNOWN_SEL),
562 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 9, GPIOJ, _UNKNOWN_SEL),
563 STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 10, GPIOK, _UNKNOWN_SEL),
564
565 STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 0, GPIOZ, _UNKNOWN_SEL),
Sughosh Ganu82ebf0f2019-12-28 23:58:28 +0530566 STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 6, RNG1_K, _UNKNOWN_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100567
Patrick Delaunayf6ccdda2019-05-17 15:08:42 +0200568 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 7, ETHCK_K, _ETH_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100569 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 8, ETHTX, _UNKNOWN_SEL),
570 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 9, ETHRX, _UNKNOWN_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100571 STM32MP1_CLK_SET_CLR_F(RCC_MP_AHB6ENSETR, 10, ETHMAC, _ACLK),
572 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 12, FMC_K, _FMC_SEL),
573 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 14, QSPI_K, _QSPI_SEL),
574 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 16, SDMMC1_K, _SDMMC12_SEL),
575 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 17, SDMMC2_K, _SDMMC12_SEL),
576 STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 24, USBH, _UNKNOWN_SEL),
577
578 STM32MP1_CLK(RCC_DBGCFGR, 8, CK_DBG, _UNKNOWN_SEL),
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200579
580 STM32MP1_CLK(RCC_BDCR, 20, RTC, _RTC_SEL),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100581};
582
583static const u8 i2c12_parents[] = {_PCLK1, _PLL4_R, _HSI_KER, _CSI_KER};
584static const u8 i2c35_parents[] = {_PCLK1, _PLL4_R, _HSI_KER, _CSI_KER};
585static const u8 i2c46_parents[] = {_PCLK5, _PLL3_Q, _HSI_KER, _CSI_KER};
586static const u8 uart6_parents[] = {_PCLK2, _PLL4_Q, _HSI_KER, _CSI_KER,
587 _HSE_KER};
588static const u8 uart24_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
589 _HSE_KER};
590static const u8 uart35_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
591 _HSE_KER};
592static const u8 uart78_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
593 _HSE_KER};
594static const u8 sdmmc12_parents[] = {_HCLK6, _PLL3_R, _PLL4_P, _HSI_KER};
595static const u8 sdmmc3_parents[] = {_HCLK2, _PLL3_R, _PLL4_P, _HSI_KER};
596static const u8 eth_parents[] = {_PLL4_P, _PLL3_Q};
597static const u8 qspi_parents[] = {_ACLK, _PLL3_R, _PLL4_P, _CK_PER};
598static const u8 fmc_parents[] = {_ACLK, _PLL3_R, _PLL4_P, _CK_PER};
599static const u8 usbphy_parents[] = {_HSE_KER, _PLL4_R, _HSE_KER_DIV2};
600static const u8 usbo_parents[] = {_PLL4_R, _USB_PHY_48};
601static const u8 stgen_parents[] = {_HSI_KER, _HSE_KER};
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200602static const u8 dsi_parents[] = {_DSI_PHY, _PLL4_P};
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200603static const u8 adc_parents[] = {_PLL4_R, _CK_PER, _PLL3_Q};
Patrice Chotard248278d2019-04-30 18:08:27 +0200604static const u8 spi_parents[] = {_PLL4_P, _PLL3_Q, _I2S_CKIN, _CK_PER,
605 _PLL3_R};
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200606static const u8 rtc_parents[] = {_UNKNOWN_ID, _LSE, _LSI, _HSE};
Patrick Delaunaya6151912018-03-12 10:46:15 +0100607
608static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = {
609 STM32MP1_CLK_PARENT(_I2C12_SEL, RCC_I2C12CKSELR, 0, 0x7, i2c12_parents),
610 STM32MP1_CLK_PARENT(_I2C35_SEL, RCC_I2C35CKSELR, 0, 0x7, i2c35_parents),
611 STM32MP1_CLK_PARENT(_I2C46_SEL, RCC_I2C46CKSELR, 0, 0x7, i2c46_parents),
612 STM32MP1_CLK_PARENT(_UART6_SEL, RCC_UART6CKSELR, 0, 0x7, uart6_parents),
613 STM32MP1_CLK_PARENT(_UART24_SEL, RCC_UART24CKSELR, 0, 0x7,
614 uart24_parents),
615 STM32MP1_CLK_PARENT(_UART35_SEL, RCC_UART35CKSELR, 0, 0x7,
616 uart35_parents),
617 STM32MP1_CLK_PARENT(_UART78_SEL, RCC_UART78CKSELR, 0, 0x7,
618 uart78_parents),
619 STM32MP1_CLK_PARENT(_SDMMC12_SEL, RCC_SDMMC12CKSELR, 0, 0x7,
620 sdmmc12_parents),
621 STM32MP1_CLK_PARENT(_SDMMC3_SEL, RCC_SDMMC3CKSELR, 0, 0x7,
622 sdmmc3_parents),
623 STM32MP1_CLK_PARENT(_ETH_SEL, RCC_ETHCKSELR, 0, 0x3, eth_parents),
624 STM32MP1_CLK_PARENT(_QSPI_SEL, RCC_QSPICKSELR, 0, 0xf, qspi_parents),
625 STM32MP1_CLK_PARENT(_FMC_SEL, RCC_FMCCKSELR, 0, 0xf, fmc_parents),
626 STM32MP1_CLK_PARENT(_USBPHY_SEL, RCC_USBCKSELR, 0, 0x3, usbphy_parents),
627 STM32MP1_CLK_PARENT(_USBO_SEL, RCC_USBCKSELR, 4, 0x1, usbo_parents),
628 STM32MP1_CLK_PARENT(_STGEN_SEL, RCC_STGENCKSELR, 0, 0x3, stgen_parents),
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200629 STM32MP1_CLK_PARENT(_DSI_SEL, RCC_DSICKSELR, 0, 0x1, dsi_parents),
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200630 STM32MP1_CLK_PARENT(_ADC12_SEL, RCC_ADCCKSELR, 0, 0x1, adc_parents),
Patrice Chotard248278d2019-04-30 18:08:27 +0200631 STM32MP1_CLK_PARENT(_SPI1_SEL, RCC_SPI2S1CKSELR, 0, 0x7, spi_parents),
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200632 STM32MP1_CLK_PARENT(_RTC_SEL, RCC_BDCR, RCC_BDCR_RTCSRC_SHIFT,
633 (RCC_BDCR_RTCSRC_MASK >> RCC_BDCR_RTCSRC_SHIFT),
634 rtc_parents),
Patrick Delaunaya6151912018-03-12 10:46:15 +0100635};
636
637#ifdef STM32MP1_CLOCK_TREE_INIT
638/* define characteristic of PLL according type */
639#define DIVN_MIN 24
640static const struct stm32mp1_pll stm32mp1_pll[PLL_TYPE_NB] = {
641 [PLL_800] = {
642 .refclk_min = 4,
643 .refclk_max = 16,
644 .divn_max = 99,
645 },
646 [PLL_1600] = {
647 .refclk_min = 8,
648 .refclk_max = 16,
649 .divn_max = 199,
650 },
651};
652#endif /* STM32MP1_CLOCK_TREE_INIT */
653
654static const struct stm32mp1_clk_pll stm32mp1_clk_pll[_PLL_NB] = {
655 STM32MP1_CLK_PLL(_PLL1, PLL_1600,
656 RCC_RCK12SELR, RCC_PLL1CFGR1, RCC_PLL1CFGR2,
657 RCC_PLL1FRACR, RCC_PLL1CR, RCC_PLL1CSGR,
658 _HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
659 STM32MP1_CLK_PLL(_PLL2, PLL_1600,
660 RCC_RCK12SELR, RCC_PLL2CFGR1, RCC_PLL2CFGR2,
661 RCC_PLL2FRACR, RCC_PLL2CR, RCC_PLL2CSGR,
662 _HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
663 STM32MP1_CLK_PLL(_PLL3, PLL_800,
664 RCC_RCK3SELR, RCC_PLL3CFGR1, RCC_PLL3CFGR2,
665 RCC_PLL3FRACR, RCC_PLL3CR, RCC_PLL3CSGR,
666 _HSI, _HSE, _CSI, _UNKNOWN_ID),
667 STM32MP1_CLK_PLL(_PLL4, PLL_800,
668 RCC_RCK4SELR, RCC_PLL4CFGR1, RCC_PLL4CFGR2,
669 RCC_PLL4FRACR, RCC_PLL4CR, RCC_PLL4CSGR,
670 _HSI, _HSE, _CSI, _I2S_CKIN),
671};
672
673/* Prescaler table lookups for clock computation */
674/* div = /1 /2 /4 /8 / 16 /64 /128 /512 */
675static const u8 stm32mp1_mcu_div[16] = {
676 0, 1, 2, 3, 4, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9
677};
678
679/* div = /1 /2 /4 /8 /16 : same divider for pmu and apbx*/
680#define stm32mp1_mpu_div stm32mp1_mpu_apbx_div
681#define stm32mp1_apbx_div stm32mp1_mpu_apbx_div
682static const u8 stm32mp1_mpu_apbx_div[8] = {
683 0, 1, 2, 3, 4, 4, 4, 4
684};
685
686/* div = /1 /2 /3 /4 */
687static const u8 stm32mp1_axi_div[8] = {
688 1, 2, 3, 4, 4, 4, 4, 4
689};
690
Patrick Delaunay8d6310a2019-01-30 13:07:04 +0100691static const __maybe_unused
692char * const stm32mp1_clk_parent_name[_PARENT_NB] = {
Patrick Delaunaya6151912018-03-12 10:46:15 +0100693 [_HSI] = "HSI",
694 [_HSE] = "HSE",
695 [_CSI] = "CSI",
696 [_LSI] = "LSI",
697 [_LSE] = "LSE",
698 [_I2S_CKIN] = "I2S_CKIN",
699 [_HSI_KER] = "HSI_KER",
700 [_HSE_KER] = "HSE_KER",
701 [_HSE_KER_DIV2] = "HSE_KER_DIV2",
702 [_CSI_KER] = "CSI_KER",
703 [_PLL1_P] = "PLL1_P",
704 [_PLL1_Q] = "PLL1_Q",
705 [_PLL1_R] = "PLL1_R",
706 [_PLL2_P] = "PLL2_P",
707 [_PLL2_Q] = "PLL2_Q",
708 [_PLL2_R] = "PLL2_R",
709 [_PLL3_P] = "PLL3_P",
710 [_PLL3_Q] = "PLL3_Q",
711 [_PLL3_R] = "PLL3_R",
712 [_PLL4_P] = "PLL4_P",
713 [_PLL4_Q] = "PLL4_Q",
714 [_PLL4_R] = "PLL4_R",
715 [_ACLK] = "ACLK",
716 [_PCLK1] = "PCLK1",
717 [_PCLK2] = "PCLK2",
718 [_PCLK3] = "PCLK3",
719 [_PCLK4] = "PCLK4",
720 [_PCLK5] = "PCLK5",
721 [_HCLK6] = "KCLK6",
722 [_HCLK2] = "HCLK2",
723 [_CK_PER] = "CK_PER",
724 [_CK_MPU] = "CK_MPU",
725 [_CK_MCU] = "CK_MCU",
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200726 [_USB_PHY_48] = "USB_PHY_48",
727 [_DSI_PHY] = "DSI_PHY_PLL",
Patrick Delaunaya6151912018-03-12 10:46:15 +0100728};
729
Patrick Delaunay8d6310a2019-01-30 13:07:04 +0100730static const __maybe_unused
731char * const stm32mp1_clk_parent_sel_name[_PARENT_SEL_NB] = {
Patrick Delaunaya6151912018-03-12 10:46:15 +0100732 [_I2C12_SEL] = "I2C12",
733 [_I2C35_SEL] = "I2C35",
734 [_I2C46_SEL] = "I2C46",
735 [_UART6_SEL] = "UART6",
736 [_UART24_SEL] = "UART24",
737 [_UART35_SEL] = "UART35",
738 [_UART78_SEL] = "UART78",
739 [_SDMMC12_SEL] = "SDMMC12",
740 [_SDMMC3_SEL] = "SDMMC3",
741 [_ETH_SEL] = "ETH",
742 [_QSPI_SEL] = "QSPI",
743 [_FMC_SEL] = "FMC",
744 [_USBPHY_SEL] = "USBPHY",
745 [_USBO_SEL] = "USBO",
Patrick Delaunay88fa34d2018-07-16 10:41:43 +0200746 [_STGEN_SEL] = "STGEN",
747 [_DSI_SEL] = "DSI",
Patrick Delaunay5b25eb92018-07-16 10:41:45 +0200748 [_ADC12_SEL] = "ADC12",
Patrice Chotard248278d2019-04-30 18:08:27 +0200749 [_SPI1_SEL] = "SPI1",
Patrick Delaunayfd7fe1b2019-07-11 12:03:37 +0200750 [_RTC_SEL] = "RTC",
Patrick Delaunaya6151912018-03-12 10:46:15 +0100751};
Patrick Delaunaya6151912018-03-12 10:46:15 +0100752
753static const struct stm32mp1_clk_data stm32mp1_data = {
754 .gate = stm32mp1_clk_gate,
755 .sel = stm32mp1_clk_sel,
756 .pll = stm32mp1_clk_pll,
757 .nb_gate = ARRAY_SIZE(stm32mp1_clk_gate),
758};
759
760static ulong stm32mp1_clk_get_fixed(struct stm32mp1_clk_priv *priv, int idx)
761{
762 if (idx >= NB_OSC) {
763 debug("%s: clk id %d not found\n", __func__, idx);
764 return 0;
765 }
766
Patrick Delaunaya6151912018-03-12 10:46:15 +0100767 return priv->osc[idx];
768}
769
770static int stm32mp1_clk_get_id(struct stm32mp1_clk_priv *priv, unsigned long id)
771{
772 const struct stm32mp1_clk_gate *gate = priv->data->gate;
773 int i, nb_clks = priv->data->nb_gate;
774
775 for (i = 0; i < nb_clks; i++) {
776 if (gate[i].index == id)
777 break;
778 }
779
780 if (i == nb_clks) {
781 printf("%s: clk id %d not found\n", __func__, (u32)id);
782 return -EINVAL;
783 }
784
785 return i;
786}
787
788static int stm32mp1_clk_get_sel(struct stm32mp1_clk_priv *priv,
789 int i)
790{
791 const struct stm32mp1_clk_gate *gate = priv->data->gate;
792
793 if (gate[i].sel > _PARENT_SEL_NB) {
794 printf("%s: parents for clk id %d not found\n",
795 __func__, i);
796 return -EINVAL;
797 }
798
799 return gate[i].sel;
800}
801
802static int stm32mp1_clk_get_fixed_parent(struct stm32mp1_clk_priv *priv,
803 int i)
804{
805 const struct stm32mp1_clk_gate *gate = priv->data->gate;
806
807 if (gate[i].fixed == _UNKNOWN_ID)
808 return -ENOENT;
809
810 return gate[i].fixed;
811}
812
813static int stm32mp1_clk_get_parent(struct stm32mp1_clk_priv *priv,
814 unsigned long id)
815{
816 const struct stm32mp1_clk_sel *sel = priv->data->sel;
817 int i;
818 int s, p;
Patrick Delaunay67d74ce2019-06-21 15:26:48 +0200819 unsigned int idx;
Patrick Delaunaya6151912018-03-12 10:46:15 +0100820
Patrick Delaunay67d74ce2019-06-21 15:26:48 +0200821 for (idx = 0; idx < ARRAY_SIZE(stm32mp1_clks); idx++)
822 if (stm32mp1_clks[idx][0] == id)
823 return stm32mp1_clks[idx][1];
Patrick Delaunaya6151912018-03-12 10:46:15 +0100824
825 i = stm32mp1_clk_get_id(priv, id);
826 if (i < 0)
827 return i;
828
829 p = stm32mp1_clk_get_fixed_parent(priv, i);
830 if (p >= 0 && p < _PARENT_NB)
831 return p;
832
833 s = stm32mp1_clk_get_sel(priv, i);
834 if (s < 0)
835 return s;
836
837 p = (readl(priv->base + sel[s].offset) >> sel[s].src) & sel[s].msk;
838
839 if (p < sel[s].nb_parent) {
840#ifdef DEBUG
841 debug("%s: %s clock is the parent %s of clk id %d\n", __func__,
842 stm32mp1_clk_parent_name[sel[s].parent[p]],
843 stm32mp1_clk_parent_sel_name[s],
844 (u32)id);
845#endif
846 return sel[s].parent[p];
847 }
848
849 pr_err("%s: no parents defined for clk id %d\n",
850 __func__, (u32)id);
851
852 return -EINVAL;
853}
854
Patrick Delaunay61105032018-07-16 10:41:42 +0200855static ulong pll_get_fref_ck(struct stm32mp1_clk_priv *priv,
856 int pll_id)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100857{
858 const struct stm32mp1_clk_pll *pll = priv->data->pll;
Patrick Delaunay61105032018-07-16 10:41:42 +0200859 u32 selr;
860 int src;
861 ulong refclk;
Patrick Delaunaya6151912018-03-12 10:46:15 +0100862
Patrick Delaunay61105032018-07-16 10:41:42 +0200863 /* Get current refclk */
Patrick Delaunaya6151912018-03-12 10:46:15 +0100864 selr = readl(priv->base + pll[pll_id].rckxselr);
Patrick Delaunay61105032018-07-16 10:41:42 +0200865 src = selr & RCC_SELR_SRC_MASK;
Patrick Delaunaya6151912018-03-12 10:46:15 +0100866
Patrick Delaunay61105032018-07-16 10:41:42 +0200867 refclk = stm32mp1_clk_get_fixed(priv, pll[pll_id].refclk[src]);
Patrick Delaunay61105032018-07-16 10:41:42 +0200868
869 return refclk;
870}
871
872/*
873 * pll_get_fvco() : return the VCO or (VCO / 2) frequency for the requested PLL
874 * - PLL1 & PLL2 => return VCO / 2 with Fpll_y_ck = FVCO / 2 * (DIVy + 1)
875 * - PLL3 & PLL4 => return VCO with Fpll_y_ck = FVCO / (DIVy + 1)
876 * => in all the case Fpll_y_ck = pll_get_fvco() / (DIVy + 1)
877 */
878static ulong pll_get_fvco(struct stm32mp1_clk_priv *priv,
879 int pll_id)
880{
881 const struct stm32mp1_clk_pll *pll = priv->data->pll;
882 int divm, divn;
883 ulong refclk, fvco;
884 u32 cfgr1, fracr;
885
886 cfgr1 = readl(priv->base + pll[pll_id].pllxcfgr1);
887 fracr = readl(priv->base + pll[pll_id].pllxfracr);
Patrick Delaunaya6151912018-03-12 10:46:15 +0100888
889 divm = (cfgr1 & (RCC_PLLNCFGR1_DIVM_MASK)) >> RCC_PLLNCFGR1_DIVM_SHIFT;
890 divn = cfgr1 & RCC_PLLNCFGR1_DIVN_MASK;
Patrick Delaunaya6151912018-03-12 10:46:15 +0100891
Patrick Delaunay61105032018-07-16 10:41:42 +0200892 refclk = pll_get_fref_ck(priv, pll_id);
Patrick Delaunaya6151912018-03-12 10:46:15 +0100893
Patrick Delaunay61105032018-07-16 10:41:42 +0200894 /* with FRACV :
895 * Fvco = Fck_ref * ((DIVN + 1) + FRACV / 2^13) / (DIVM + 1)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100896 * without FRACV
Patrick Delaunay61105032018-07-16 10:41:42 +0200897 * Fvco = Fck_ref * ((DIVN + 1) / (DIVM + 1)
Patrick Delaunaya6151912018-03-12 10:46:15 +0100898 */
899 if (fracr & RCC_PLLNFRACR_FRACLE) {
900 u32 fracv = (fracr & RCC_PLLNFRACR_FRACV_MASK)
901 >> RCC_PLLNFRACR_FRACV_SHIFT;
Patrick Delaunay61105032018-07-16 10:41:42 +0200902 fvco = (ulong)lldiv((unsigned long long)refclk *
Patrick Delaunaya6151912018-03-12 10:46:15 +0100903 (((divn + 1) << 13) + fracv),
Patrick Delaunay61105032018-07-16 10:41:42 +0200904 ((unsigned long long)(divm + 1)) << 13);
Patrick Delaunaya6151912018-03-12 10:46:15 +0100905 } else {
Patrick Delaunay61105032018-07-16 10:41:42 +0200906 fvco = (ulong)(refclk * (divn + 1) / (divm + 1));
Patrick Delaunaya6151912018-03-12 10:46:15 +0100907 }
Patrick Delaunay61105032018-07-16 10:41:42 +0200908
909 return fvco;
910}
911
912static ulong stm32mp1_read_pll_freq(struct stm32mp1_clk_priv *priv,
913 int pll_id, int div_id)
914{
915 const struct stm32mp1_clk_pll *pll = priv->data->pll;
916 int divy;
917 ulong dfout;
918 u32 cfgr2;
919
Patrick Delaunay61105032018-07-16 10:41:42 +0200920 if (div_id >= _DIV_NB)
921 return 0;
922
923 cfgr2 = readl(priv->base + pll[pll_id].pllxcfgr2);
924 divy = (cfgr2 >> RCC_PLLNCFGR2_SHIFT(div_id)) & RCC_PLLNCFGR2_DIVX_MASK;
925
Patrick Delaunay61105032018-07-16 10:41:42 +0200926 dfout = pll_get_fvco(priv, pll_id) / (divy + 1);
Patrick Delaunaya6151912018-03-12 10:46:15 +0100927
928 return dfout;
929}
930
931static ulong stm32mp1_clk_get(struct stm32mp1_clk_priv *priv, int p)
932{
933 u32 reg;
934 ulong clock = 0;
935
936 switch (p) {
937 case _CK_MPU:
938 /* MPU sub system */
939 reg = readl(priv->base + RCC_MPCKSELR);
940 switch (reg & RCC_SELR_SRC_MASK) {
941 case RCC_MPCKSELR_HSI:
942 clock = stm32mp1_clk_get_fixed(priv, _HSI);
943 break;
944 case RCC_MPCKSELR_HSE:
945 clock = stm32mp1_clk_get_fixed(priv, _HSE);
946 break;
947 case RCC_MPCKSELR_PLL:
948 case RCC_MPCKSELR_PLL_MPUDIV:
949 clock = stm32mp1_read_pll_freq(priv, _PLL1, _DIV_P);
950 if (p == RCC_MPCKSELR_PLL_MPUDIV) {
951 reg = readl(priv->base + RCC_MPCKDIVR);
952 clock /= stm32mp1_mpu_div[reg &
953 RCC_MPUDIV_MASK];
954 }
955 break;
956 }
957 break;
958 /* AXI sub system */
959 case _ACLK:
960 case _HCLK2:
961 case _HCLK6:
962 case _PCLK4:
963 case _PCLK5:
964 reg = readl(priv->base + RCC_ASSCKSELR);
965 switch (reg & RCC_SELR_SRC_MASK) {
966 case RCC_ASSCKSELR_HSI:
967 clock = stm32mp1_clk_get_fixed(priv, _HSI);
968 break;
969 case RCC_ASSCKSELR_HSE:
970 clock = stm32mp1_clk_get_fixed(priv, _HSE);
971 break;
972 case RCC_ASSCKSELR_PLL:
973 clock = stm32mp1_read_pll_freq(priv, _PLL2, _DIV_P);
974 break;
975 }
976
977 /* System clock divider */
978 reg = readl(priv->base + RCC_AXIDIVR);
979 clock /= stm32mp1_axi_div[reg & RCC_AXIDIV_MASK];
980
981 switch (p) {
982 case _PCLK4:
983 reg = readl(priv->base + RCC_APB4DIVR);
984 clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
985 break;
986 case _PCLK5:
987 reg = readl(priv->base + RCC_APB5DIVR);
988 clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
989 break;
990 default:
991 break;
992 }
993 break;
994 /* MCU sub system */
995 case _CK_MCU:
996 case _PCLK1:
997 case _PCLK2:
998 case _PCLK3:
999 reg = readl(priv->base + RCC_MSSCKSELR);
1000 switch (reg & RCC_SELR_SRC_MASK) {
1001 case RCC_MSSCKSELR_HSI:
1002 clock = stm32mp1_clk_get_fixed(priv, _HSI);
1003 break;
1004 case RCC_MSSCKSELR_HSE:
1005 clock = stm32mp1_clk_get_fixed(priv, _HSE);
1006 break;
1007 case RCC_MSSCKSELR_CSI:
1008 clock = stm32mp1_clk_get_fixed(priv, _CSI);
1009 break;
1010 case RCC_MSSCKSELR_PLL:
1011 clock = stm32mp1_read_pll_freq(priv, _PLL3, _DIV_P);
1012 break;
1013 }
1014
1015 /* MCU clock divider */
1016 reg = readl(priv->base + RCC_MCUDIVR);
1017 clock >>= stm32mp1_mcu_div[reg & RCC_MCUDIV_MASK];
1018
1019 switch (p) {
1020 case _PCLK1:
1021 reg = readl(priv->base + RCC_APB1DIVR);
1022 clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
1023 break;
1024 case _PCLK2:
1025 reg = readl(priv->base + RCC_APB2DIVR);
1026 clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
1027 break;
1028 case _PCLK3:
1029 reg = readl(priv->base + RCC_APB3DIVR);
1030 clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
1031 break;
1032 case _CK_MCU:
1033 default:
1034 break;
1035 }
1036 break;
1037 case _CK_PER:
1038 reg = readl(priv->base + RCC_CPERCKSELR);
1039 switch (reg & RCC_SELR_SRC_MASK) {
1040 case RCC_CPERCKSELR_HSI:
1041 clock = stm32mp1_clk_get_fixed(priv, _HSI);
1042 break;
1043 case RCC_CPERCKSELR_HSE:
1044 clock = stm32mp1_clk_get_fixed(priv, _HSE);
1045 break;
1046 case RCC_CPERCKSELR_CSI:
1047 clock = stm32mp1_clk_get_fixed(priv, _CSI);
1048 break;
1049 }
1050 break;
1051 case _HSI:
1052 case _HSI_KER:
1053 clock = stm32mp1_clk_get_fixed(priv, _HSI);
1054 break;
1055 case _CSI:
1056 case _CSI_KER:
1057 clock = stm32mp1_clk_get_fixed(priv, _CSI);
1058 break;
1059 case _HSE:
1060 case _HSE_KER:
1061 case _HSE_KER_DIV2:
1062 clock = stm32mp1_clk_get_fixed(priv, _HSE);
1063 if (p == _HSE_KER_DIV2)
1064 clock >>= 1;
1065 break;
1066 case _LSI:
1067 clock = stm32mp1_clk_get_fixed(priv, _LSI);
1068 break;
1069 case _LSE:
1070 clock = stm32mp1_clk_get_fixed(priv, _LSE);
1071 break;
1072 /* PLL */
1073 case _PLL1_P:
1074 case _PLL1_Q:
1075 case _PLL1_R:
1076 clock = stm32mp1_read_pll_freq(priv, _PLL1, p - _PLL1_P);
1077 break;
1078 case _PLL2_P:
1079 case _PLL2_Q:
1080 case _PLL2_R:
1081 clock = stm32mp1_read_pll_freq(priv, _PLL2, p - _PLL2_P);
1082 break;
1083 case _PLL3_P:
1084 case _PLL3_Q:
1085 case _PLL3_R:
1086 clock = stm32mp1_read_pll_freq(priv, _PLL3, p - _PLL3_P);
1087 break;
1088 case _PLL4_P:
1089 case _PLL4_Q:
1090 case _PLL4_R:
1091 clock = stm32mp1_read_pll_freq(priv, _PLL4, p - _PLL4_P);
1092 break;
1093 /* other */
1094 case _USB_PHY_48:
Patrick Delaunay86617dd2019-01-30 13:07:00 +01001095 clock = 48000000;
Patrick Delaunaya6151912018-03-12 10:46:15 +01001096 break;
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001097 case _DSI_PHY:
1098 {
1099 struct clk clk;
1100 struct udevice *dev = NULL;
Patrick Delaunaya6151912018-03-12 10:46:15 +01001101
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001102 if (!uclass_get_device_by_name(UCLASS_CLK, "ck_dsi_phy",
1103 &dev)) {
1104 if (clk_request(dev, &clk)) {
1105 pr_err("ck_dsi_phy request");
1106 } else {
1107 clk.id = 0;
1108 clock = clk_get_rate(&clk);
1109 }
1110 }
1111 break;
1112 }
Patrick Delaunaya6151912018-03-12 10:46:15 +01001113 default:
1114 break;
1115 }
1116
1117 debug("%s(%d) clock = %lx : %ld kHz\n",
1118 __func__, p, clock, clock / 1000);
1119
1120 return clock;
1121}
1122
1123static int stm32mp1_clk_enable(struct clk *clk)
1124{
1125 struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
1126 const struct stm32mp1_clk_gate *gate = priv->data->gate;
1127 int i = stm32mp1_clk_get_id(priv, clk->id);
1128
1129 if (i < 0)
1130 return i;
1131
1132 if (gate[i].set_clr)
1133 writel(BIT(gate[i].bit), priv->base + gate[i].offset);
1134 else
1135 setbits_le32(priv->base + gate[i].offset, BIT(gate[i].bit));
1136
1137 debug("%s: id clock %d has been enabled\n", __func__, (u32)clk->id);
1138
1139 return 0;
1140}
1141
1142static int stm32mp1_clk_disable(struct clk *clk)
1143{
1144 struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
1145 const struct stm32mp1_clk_gate *gate = priv->data->gate;
1146 int i = stm32mp1_clk_get_id(priv, clk->id);
1147
1148 if (i < 0)
1149 return i;
1150
1151 if (gate[i].set_clr)
1152 writel(BIT(gate[i].bit),
1153 priv->base + gate[i].offset
1154 + RCC_MP_ENCLRR_OFFSET);
1155 else
1156 clrbits_le32(priv->base + gate[i].offset, BIT(gate[i].bit));
1157
1158 debug("%s: id clock %d has been disabled\n", __func__, (u32)clk->id);
1159
1160 return 0;
1161}
1162
1163static ulong stm32mp1_clk_get_rate(struct clk *clk)
1164{
1165 struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
1166 int p = stm32mp1_clk_get_parent(priv, clk->id);
1167 ulong rate;
1168
1169 if (p < 0)
1170 return 0;
1171
1172 rate = stm32mp1_clk_get(priv, p);
1173
1174#ifdef DEBUG
1175 debug("%s: computed rate for id clock %d is %d (parent is %s)\n",
1176 __func__, (u32)clk->id, (u32)rate, stm32mp1_clk_parent_name[p]);
1177#endif
1178 return rate;
1179}
1180
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001181#ifdef STM32MP1_CLOCK_TREE_INIT
1182static void stm32mp1_ls_osc_set(int enable, fdt_addr_t rcc, u32 offset,
1183 u32 mask_on)
1184{
1185 u32 address = rcc + offset;
1186
1187 if (enable)
1188 setbits_le32(address, mask_on);
1189 else
1190 clrbits_le32(address, mask_on);
1191}
1192
1193static void stm32mp1_hs_ocs_set(int enable, fdt_addr_t rcc, u32 mask_on)
1194{
Patrick Delaunay63201282019-01-30 13:07:02 +01001195 writel(mask_on, rcc + (enable ? RCC_OCENSETR : RCC_OCENCLRR));
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001196}
1197
1198static int stm32mp1_osc_wait(int enable, fdt_addr_t rcc, u32 offset,
1199 u32 mask_rdy)
1200{
1201 u32 mask_test = 0;
1202 u32 address = rcc + offset;
1203 u32 val;
1204 int ret;
1205
1206 if (enable)
1207 mask_test = mask_rdy;
1208
1209 ret = readl_poll_timeout(address, val,
1210 (val & mask_rdy) == mask_test,
1211 TIMEOUT_1S);
1212
1213 if (ret)
1214 pr_err("OSC %x @ %x timeout for enable=%d : 0x%x\n",
1215 mask_rdy, address, enable, readl(address));
1216
1217 return ret;
1218}
1219
Patrick Delaunayd2194152018-07-16 10:41:46 +02001220static void stm32mp1_lse_enable(fdt_addr_t rcc, int bypass, int digbyp,
1221 int lsedrv)
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001222{
1223 u32 value;
1224
Patrick Delaunayd2194152018-07-16 10:41:46 +02001225 if (digbyp)
1226 setbits_le32(rcc + RCC_BDCR, RCC_BDCR_DIGBYP);
1227
1228 if (bypass || digbyp)
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001229 setbits_le32(rcc + RCC_BDCR, RCC_BDCR_LSEBYP);
1230
1231 /*
1232 * warning: not recommended to switch directly from "high drive"
1233 * to "medium low drive", and vice-versa.
1234 */
1235 value = (readl(rcc + RCC_BDCR) & RCC_BDCR_LSEDRV_MASK)
1236 >> RCC_BDCR_LSEDRV_SHIFT;
1237
1238 while (value != lsedrv) {
1239 if (value > lsedrv)
1240 value--;
1241 else
1242 value++;
1243
1244 clrsetbits_le32(rcc + RCC_BDCR,
1245 RCC_BDCR_LSEDRV_MASK,
1246 value << RCC_BDCR_LSEDRV_SHIFT);
1247 }
1248
1249 stm32mp1_ls_osc_set(1, rcc, RCC_BDCR, RCC_BDCR_LSEON);
1250}
1251
1252static void stm32mp1_lse_wait(fdt_addr_t rcc)
1253{
1254 stm32mp1_osc_wait(1, rcc, RCC_BDCR, RCC_BDCR_LSERDY);
1255}
1256
1257static void stm32mp1_lsi_set(fdt_addr_t rcc, int enable)
1258{
1259 stm32mp1_ls_osc_set(enable, rcc, RCC_RDLSICR, RCC_RDLSICR_LSION);
1260 stm32mp1_osc_wait(enable, rcc, RCC_RDLSICR, RCC_RDLSICR_LSIRDY);
1261}
1262
Patrick Delaunayd2194152018-07-16 10:41:46 +02001263static void stm32mp1_hse_enable(fdt_addr_t rcc, int bypass, int digbyp, int css)
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001264{
Patrick Delaunayd2194152018-07-16 10:41:46 +02001265 if (digbyp)
Patrick Delaunay63201282019-01-30 13:07:02 +01001266 writel(RCC_OCENR_DIGBYP, rcc + RCC_OCENSETR);
Patrick Delaunayd2194152018-07-16 10:41:46 +02001267 if (bypass || digbyp)
Patrick Delaunay63201282019-01-30 13:07:02 +01001268 writel(RCC_OCENR_HSEBYP, rcc + RCC_OCENSETR);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001269
1270 stm32mp1_hs_ocs_set(1, rcc, RCC_OCENR_HSEON);
1271 stm32mp1_osc_wait(1, rcc, RCC_OCRDYR, RCC_OCRDYR_HSERDY);
1272
1273 if (css)
Patrick Delaunay63201282019-01-30 13:07:02 +01001274 writel(RCC_OCENR_HSECSSON, rcc + RCC_OCENSETR);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001275}
1276
1277static void stm32mp1_csi_set(fdt_addr_t rcc, int enable)
1278{
Patrick Delaunay63201282019-01-30 13:07:02 +01001279 stm32mp1_hs_ocs_set(enable, rcc, RCC_OCENR_CSION);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001280 stm32mp1_osc_wait(enable, rcc, RCC_OCRDYR, RCC_OCRDYR_CSIRDY);
1281}
1282
1283static void stm32mp1_hsi_set(fdt_addr_t rcc, int enable)
1284{
1285 stm32mp1_hs_ocs_set(enable, rcc, RCC_OCENR_HSION);
1286 stm32mp1_osc_wait(enable, rcc, RCC_OCRDYR, RCC_OCRDYR_HSIRDY);
1287}
1288
1289static int stm32mp1_set_hsidiv(fdt_addr_t rcc, u8 hsidiv)
1290{
1291 u32 address = rcc + RCC_OCRDYR;
1292 u32 val;
1293 int ret;
1294
1295 clrsetbits_le32(rcc + RCC_HSICFGR,
1296 RCC_HSICFGR_HSIDIV_MASK,
1297 RCC_HSICFGR_HSIDIV_MASK & hsidiv);
1298
1299 ret = readl_poll_timeout(address, val,
1300 val & RCC_OCRDYR_HSIDIVRDY,
1301 TIMEOUT_200MS);
1302 if (ret)
1303 pr_err("HSIDIV failed @ 0x%x: 0x%x\n",
1304 address, readl(address));
1305
1306 return ret;
1307}
1308
1309static int stm32mp1_hsidiv(fdt_addr_t rcc, ulong hsifreq)
1310{
1311 u8 hsidiv;
1312 u32 hsidivfreq = MAX_HSI_HZ;
1313
1314 for (hsidiv = 0; hsidiv < 4; hsidiv++,
1315 hsidivfreq = hsidivfreq / 2)
1316 if (hsidivfreq == hsifreq)
1317 break;
1318
1319 if (hsidiv == 4) {
1320 pr_err("clk-hsi frequency invalid");
1321 return -1;
1322 }
1323
1324 if (hsidiv > 0)
1325 return stm32mp1_set_hsidiv(rcc, hsidiv);
1326
1327 return 0;
1328}
1329
1330static void pll_start(struct stm32mp1_clk_priv *priv, int pll_id)
1331{
1332 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1333
Patrick Delaunaybbd108a2019-01-30 13:07:06 +01001334 clrsetbits_le32(priv->base + pll[pll_id].pllxcr,
1335 RCC_PLLNCR_DIVPEN | RCC_PLLNCR_DIVQEN |
1336 RCC_PLLNCR_DIVREN,
1337 RCC_PLLNCR_PLLON);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001338}
1339
1340static int pll_output(struct stm32mp1_clk_priv *priv, int pll_id, int output)
1341{
1342 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1343 u32 pllxcr = priv->base + pll[pll_id].pllxcr;
1344 u32 val;
1345 int ret;
1346
1347 ret = readl_poll_timeout(pllxcr, val, val & RCC_PLLNCR_PLLRDY,
1348 TIMEOUT_200MS);
1349
1350 if (ret) {
1351 pr_err("PLL%d start failed @ 0x%x: 0x%x\n",
1352 pll_id, pllxcr, readl(pllxcr));
1353 return ret;
1354 }
1355
1356 /* start the requested output */
1357 setbits_le32(pllxcr, output << RCC_PLLNCR_DIVEN_SHIFT);
1358
1359 return 0;
1360}
1361
1362static int pll_stop(struct stm32mp1_clk_priv *priv, int pll_id)
1363{
1364 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1365 u32 pllxcr = priv->base + pll[pll_id].pllxcr;
1366 u32 val;
1367
1368 /* stop all output */
1369 clrbits_le32(pllxcr,
1370 RCC_PLLNCR_DIVPEN | RCC_PLLNCR_DIVQEN | RCC_PLLNCR_DIVREN);
1371
1372 /* stop PLL */
1373 clrbits_le32(pllxcr, RCC_PLLNCR_PLLON);
1374
1375 /* wait PLL stopped */
1376 return readl_poll_timeout(pllxcr, val, (val & RCC_PLLNCR_PLLRDY) == 0,
1377 TIMEOUT_200MS);
1378}
1379
1380static void pll_config_output(struct stm32mp1_clk_priv *priv,
1381 int pll_id, u32 *pllcfg)
1382{
1383 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1384 fdt_addr_t rcc = priv->base;
1385 u32 value;
1386
1387 value = (pllcfg[PLLCFG_P] << RCC_PLLNCFGR2_DIVP_SHIFT)
1388 & RCC_PLLNCFGR2_DIVP_MASK;
1389 value |= (pllcfg[PLLCFG_Q] << RCC_PLLNCFGR2_DIVQ_SHIFT)
1390 & RCC_PLLNCFGR2_DIVQ_MASK;
1391 value |= (pllcfg[PLLCFG_R] << RCC_PLLNCFGR2_DIVR_SHIFT)
1392 & RCC_PLLNCFGR2_DIVR_MASK;
1393 writel(value, rcc + pll[pll_id].pllxcfgr2);
1394}
1395
1396static int pll_config(struct stm32mp1_clk_priv *priv, int pll_id,
1397 u32 *pllcfg, u32 fracv)
1398{
1399 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1400 fdt_addr_t rcc = priv->base;
1401 enum stm32mp1_plltype type = pll[pll_id].plltype;
1402 int src;
1403 ulong refclk;
1404 u8 ifrge = 0;
1405 u32 value;
1406
1407 src = readl(priv->base + pll[pll_id].rckxselr) & RCC_SELR_SRC_MASK;
1408
1409 refclk = stm32mp1_clk_get_fixed(priv, pll[pll_id].refclk[src]) /
1410 (pllcfg[PLLCFG_M] + 1);
1411
1412 if (refclk < (stm32mp1_pll[type].refclk_min * 1000000) ||
1413 refclk > (stm32mp1_pll[type].refclk_max * 1000000)) {
1414 debug("invalid refclk = %x\n", (u32)refclk);
1415 return -EINVAL;
1416 }
1417 if (type == PLL_800 && refclk >= 8000000)
1418 ifrge = 1;
1419
1420 value = (pllcfg[PLLCFG_N] << RCC_PLLNCFGR1_DIVN_SHIFT)
1421 & RCC_PLLNCFGR1_DIVN_MASK;
1422 value |= (pllcfg[PLLCFG_M] << RCC_PLLNCFGR1_DIVM_SHIFT)
1423 & RCC_PLLNCFGR1_DIVM_MASK;
1424 value |= (ifrge << RCC_PLLNCFGR1_IFRGE_SHIFT)
1425 & RCC_PLLNCFGR1_IFRGE_MASK;
1426 writel(value, rcc + pll[pll_id].pllxcfgr1);
1427
1428 /* fractional configuration: load sigma-delta modulator (SDM) */
1429
1430 /* Write into FRACV the new fractional value , and FRACLE to 0 */
1431 writel(fracv << RCC_PLLNFRACR_FRACV_SHIFT,
1432 rcc + pll[pll_id].pllxfracr);
1433
1434 /* Write FRACLE to 1 : FRACV value is loaded into the SDM */
1435 setbits_le32(rcc + pll[pll_id].pllxfracr,
1436 RCC_PLLNFRACR_FRACLE);
1437
1438 pll_config_output(priv, pll_id, pllcfg);
1439
1440 return 0;
1441}
1442
1443static void pll_csg(struct stm32mp1_clk_priv *priv, int pll_id, u32 *csg)
1444{
1445 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1446 u32 pllxcsg;
1447
1448 pllxcsg = ((csg[PLLCSG_MOD_PER] << RCC_PLLNCSGR_MOD_PER_SHIFT) &
1449 RCC_PLLNCSGR_MOD_PER_MASK) |
1450 ((csg[PLLCSG_INC_STEP] << RCC_PLLNCSGR_INC_STEP_SHIFT) &
1451 RCC_PLLNCSGR_INC_STEP_MASK) |
1452 ((csg[PLLCSG_SSCG_MODE] << RCC_PLLNCSGR_SSCG_MODE_SHIFT) &
1453 RCC_PLLNCSGR_SSCG_MODE_MASK);
1454
1455 writel(pllxcsg, priv->base + pll[pll_id].pllxcsgr);
Patrick Delaunaybbd108a2019-01-30 13:07:06 +01001456
1457 setbits_le32(priv->base + pll[pll_id].pllxcr, RCC_PLLNCR_SSCG_CTRL);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001458}
1459
Patrick Delaunayc3e828b2019-04-18 17:32:48 +02001460static __maybe_unused int pll_set_rate(struct udevice *dev,
1461 int pll_id,
1462 int div_id,
1463 unsigned long clk_rate)
1464{
1465 struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
1466 unsigned int pllcfg[PLLCFG_NB];
1467 ofnode plloff;
1468 char name[12];
1469 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1470 enum stm32mp1_plltype type = pll[pll_id].plltype;
1471 int divm, divn, divy;
1472 int ret;
1473 ulong fck_ref;
1474 u32 fracv;
1475 u64 value;
1476
1477 if (div_id > _DIV_NB)
1478 return -EINVAL;
1479
1480 sprintf(name, "st,pll@%d", pll_id);
1481 plloff = dev_read_subnode(dev, name);
1482 if (!ofnode_valid(plloff))
1483 return -FDT_ERR_NOTFOUND;
1484
1485 ret = ofnode_read_u32_array(plloff, "cfg",
1486 pllcfg, PLLCFG_NB);
1487 if (ret < 0)
1488 return -FDT_ERR_NOTFOUND;
1489
1490 fck_ref = pll_get_fref_ck(priv, pll_id);
1491
1492 divm = pllcfg[PLLCFG_M];
1493 /* select output divider = 0: for _DIV_P, 1:_DIV_Q 2:_DIV_R */
1494 divy = pllcfg[PLLCFG_P + div_id];
1495
1496 /* For: PLL1 & PLL2 => VCO is * 2 but ck_pll_y is also / 2
1497 * So same final result than PLL2 et 4
1498 * with FRACV
1499 * Fck_pll_y = Fck_ref * ((DIVN + 1) + FRACV / 2^13)
1500 * / (DIVy + 1) * (DIVM + 1)
1501 * value = (DIVN + 1) * 2^13 + FRACV / 2^13
1502 * = Fck_pll_y (DIVy + 1) * (DIVM + 1) * 2^13 / Fck_ref
1503 */
1504 value = ((u64)clk_rate * (divy + 1) * (divm + 1)) << 13;
1505 value = lldiv(value, fck_ref);
1506
1507 divn = (value >> 13) - 1;
1508 if (divn < DIVN_MIN ||
1509 divn > stm32mp1_pll[type].divn_max) {
1510 pr_err("divn invalid = %d", divn);
1511 return -EINVAL;
1512 }
1513 fracv = value - ((divn + 1) << 13);
1514 pllcfg[PLLCFG_N] = divn;
1515
1516 /* reconfigure PLL */
1517 pll_stop(priv, pll_id);
1518 pll_config(priv, pll_id, pllcfg, fracv);
1519 pll_start(priv, pll_id);
1520 pll_output(priv, pll_id, pllcfg[PLLCFG_O]);
1521
1522 return 0;
1523}
1524
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001525static int set_clksrc(struct stm32mp1_clk_priv *priv, unsigned int clksrc)
1526{
1527 u32 address = priv->base + (clksrc >> 4);
1528 u32 val;
1529 int ret;
1530
1531 clrsetbits_le32(address, RCC_SELR_SRC_MASK, clksrc & RCC_SELR_SRC_MASK);
1532 ret = readl_poll_timeout(address, val, val & RCC_SELR_SRCRDY,
1533 TIMEOUT_200MS);
1534 if (ret)
1535 pr_err("CLKSRC %x start failed @ 0x%x: 0x%x\n",
1536 clksrc, address, readl(address));
1537
1538 return ret;
1539}
1540
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001541static void stgen_config(struct stm32mp1_clk_priv *priv)
1542{
1543 int p;
1544 u32 stgenc, cntfid0;
1545 ulong rate;
1546
Patrick Delaunaydfda7d42019-07-05 17:20:11 +02001547 stgenc = STM32_STGEN_BASE;
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001548 cntfid0 = readl(stgenc + STGENC_CNTFID0);
1549 p = stm32mp1_clk_get_parent(priv, STGEN_K);
1550 rate = stm32mp1_clk_get(priv, p);
1551
1552 if (cntfid0 != rate) {
Patrick Delaunayf3a23c22019-01-30 13:07:03 +01001553 u64 counter;
1554
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001555 pr_debug("System Generic Counter (STGEN) update\n");
1556 clrbits_le32(stgenc + STGENC_CNTCR, STGENC_CNTCR_EN);
Patrick Delaunayf3a23c22019-01-30 13:07:03 +01001557 counter = (u64)readl(stgenc + STGENC_CNTCVL);
1558 counter |= ((u64)(readl(stgenc + STGENC_CNTCVU))) << 32;
1559 counter = lldiv(counter * (u64)rate, cntfid0);
1560 writel((u32)counter, stgenc + STGENC_CNTCVL);
1561 writel((u32)(counter >> 32), stgenc + STGENC_CNTCVU);
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001562 writel(rate, stgenc + STGENC_CNTFID0);
1563 setbits_le32(stgenc + STGENC_CNTCR, STGENC_CNTCR_EN);
1564
1565 __asm__ volatile("mcr p15, 0, %0, c14, c0, 0" : : "r" (rate));
1566
1567 /* need to update gd->arch.timer_rate_hz with new frequency */
1568 timer_init();
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001569 }
1570}
1571
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001572static int set_clkdiv(unsigned int clkdiv, u32 address)
1573{
1574 u32 val;
1575 int ret;
1576
1577 clrsetbits_le32(address, RCC_DIVR_DIV_MASK, clkdiv & RCC_DIVR_DIV_MASK);
1578 ret = readl_poll_timeout(address, val, val & RCC_DIVR_DIVRDY,
1579 TIMEOUT_200MS);
1580 if (ret)
1581 pr_err("CLKDIV %x start failed @ 0x%x: 0x%x\n",
1582 clkdiv, address, readl(address));
1583
1584 return ret;
1585}
1586
1587static void stm32mp1_mco_csg(struct stm32mp1_clk_priv *priv,
1588 u32 clksrc, u32 clkdiv)
1589{
1590 u32 address = priv->base + (clksrc >> 4);
1591
1592 /*
1593 * binding clksrc : bit15-4 offset
1594 * bit3: disable
1595 * bit2-0: MCOSEL[2:0]
1596 */
1597 if (clksrc & 0x8) {
1598 clrbits_le32(address, RCC_MCOCFG_MCOON);
1599 } else {
1600 clrsetbits_le32(address,
1601 RCC_MCOCFG_MCOSRC_MASK,
1602 clksrc & RCC_MCOCFG_MCOSRC_MASK);
1603 clrsetbits_le32(address,
1604 RCC_MCOCFG_MCODIV_MASK,
1605 clkdiv << RCC_MCOCFG_MCODIV_SHIFT);
1606 setbits_le32(address, RCC_MCOCFG_MCOON);
1607 }
1608}
1609
1610static void set_rtcsrc(struct stm32mp1_clk_priv *priv,
1611 unsigned int clksrc,
1612 int lse_css)
1613{
1614 u32 address = priv->base + RCC_BDCR;
1615
1616 if (readl(address) & RCC_BDCR_RTCCKEN)
1617 goto skip_rtc;
1618
1619 if (clksrc == CLK_RTC_DISABLED)
1620 goto skip_rtc;
1621
1622 clrsetbits_le32(address,
1623 RCC_BDCR_RTCSRC_MASK,
1624 clksrc << RCC_BDCR_RTCSRC_SHIFT);
1625
1626 setbits_le32(address, RCC_BDCR_RTCCKEN);
1627
1628skip_rtc:
1629 if (lse_css)
1630 setbits_le32(address, RCC_BDCR_LSECSSON);
1631}
1632
1633static void pkcs_config(struct stm32mp1_clk_priv *priv, u32 pkcs)
1634{
1635 u32 address = priv->base + ((pkcs >> 4) & 0xFFF);
1636 u32 value = pkcs & 0xF;
1637 u32 mask = 0xF;
1638
1639 if (pkcs & BIT(31)) {
1640 mask <<= 4;
1641 value <<= 4;
1642 }
1643 clrsetbits_le32(address, mask, value);
1644}
1645
1646static int stm32mp1_clktree(struct udevice *dev)
1647{
1648 struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
1649 fdt_addr_t rcc = priv->base;
1650 unsigned int clksrc[CLKSRC_NB];
1651 unsigned int clkdiv[CLKDIV_NB];
1652 unsigned int pllcfg[_PLL_NB][PLLCFG_NB];
1653 ofnode plloff[_PLL_NB];
1654 int ret;
1655 int i, len;
1656 int lse_css = 0;
1657 const u32 *pkcs_cell;
1658
1659 /* check mandatory field */
1660 ret = dev_read_u32_array(dev, "st,clksrc", clksrc, CLKSRC_NB);
1661 if (ret < 0) {
1662 debug("field st,clksrc invalid: error %d\n", ret);
1663 return -FDT_ERR_NOTFOUND;
1664 }
1665
1666 ret = dev_read_u32_array(dev, "st,clkdiv", clkdiv, CLKDIV_NB);
1667 if (ret < 0) {
1668 debug("field st,clkdiv invalid: error %d\n", ret);
1669 return -FDT_ERR_NOTFOUND;
1670 }
1671
1672 /* check mandatory field in each pll */
1673 for (i = 0; i < _PLL_NB; i++) {
1674 char name[12];
1675
1676 sprintf(name, "st,pll@%d", i);
1677 plloff[i] = dev_read_subnode(dev, name);
1678 if (!ofnode_valid(plloff[i]))
1679 continue;
1680 ret = ofnode_read_u32_array(plloff[i], "cfg",
1681 pllcfg[i], PLLCFG_NB);
1682 if (ret < 0) {
1683 debug("field cfg invalid: error %d\n", ret);
1684 return -FDT_ERR_NOTFOUND;
1685 }
1686 }
1687
1688 debug("configuration MCO\n");
1689 stm32mp1_mco_csg(priv, clksrc[CLKSRC_MCO1], clkdiv[CLKDIV_MCO1]);
1690 stm32mp1_mco_csg(priv, clksrc[CLKSRC_MCO2], clkdiv[CLKDIV_MCO2]);
1691
1692 debug("switch ON osillator\n");
1693 /*
1694 * switch ON oscillator found in device-tree,
1695 * HSI already ON after bootrom
1696 */
1697 if (priv->osc[_LSI])
1698 stm32mp1_lsi_set(rcc, 1);
1699
1700 if (priv->osc[_LSE]) {
Patrick Delaunayd2194152018-07-16 10:41:46 +02001701 int bypass, digbyp, lsedrv;
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001702 struct udevice *dev = priv->osc_dev[_LSE];
1703
1704 bypass = dev_read_bool(dev, "st,bypass");
Patrick Delaunayd2194152018-07-16 10:41:46 +02001705 digbyp = dev_read_bool(dev, "st,digbypass");
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001706 lse_css = dev_read_bool(dev, "st,css");
1707 lsedrv = dev_read_u32_default(dev, "st,drive",
1708 LSEDRV_MEDIUM_HIGH);
1709
Patrick Delaunayd2194152018-07-16 10:41:46 +02001710 stm32mp1_lse_enable(rcc, bypass, digbyp, lsedrv);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001711 }
1712
1713 if (priv->osc[_HSE]) {
Patrick Delaunayd2194152018-07-16 10:41:46 +02001714 int bypass, digbyp, css;
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001715 struct udevice *dev = priv->osc_dev[_HSE];
1716
1717 bypass = dev_read_bool(dev, "st,bypass");
Patrick Delaunayd2194152018-07-16 10:41:46 +02001718 digbyp = dev_read_bool(dev, "st,digbypass");
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001719 css = dev_read_bool(dev, "st,css");
1720
Patrick Delaunayd2194152018-07-16 10:41:46 +02001721 stm32mp1_hse_enable(rcc, bypass, digbyp, css);
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001722 }
1723 /* CSI is mandatory for automatic I/O compensation (SYSCFG_CMPCR)
1724 * => switch on CSI even if node is not present in device tree
1725 */
1726 stm32mp1_csi_set(rcc, 1);
1727
1728 /* come back to HSI */
1729 debug("come back to HSI\n");
1730 set_clksrc(priv, CLK_MPU_HSI);
1731 set_clksrc(priv, CLK_AXI_HSI);
1732 set_clksrc(priv, CLK_MCU_HSI);
1733
1734 debug("pll stop\n");
1735 for (i = 0; i < _PLL_NB; i++)
1736 pll_stop(priv, i);
1737
1738 /* configure HSIDIV */
1739 debug("configure HSIDIV\n");
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001740 if (priv->osc[_HSI]) {
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001741 stm32mp1_hsidiv(rcc, priv->osc[_HSI]);
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001742 stgen_config(priv);
1743 }
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001744
1745 /* select DIV */
1746 debug("select DIV\n");
1747 /* no ready bit when MPUSRC != CLK_MPU_PLL1P_DIV, MPUDIV is disabled */
1748 writel(clkdiv[CLKDIV_MPU] & RCC_DIVR_DIV_MASK, rcc + RCC_MPCKDIVR);
1749 set_clkdiv(clkdiv[CLKDIV_AXI], rcc + RCC_AXIDIVR);
1750 set_clkdiv(clkdiv[CLKDIV_APB4], rcc + RCC_APB4DIVR);
1751 set_clkdiv(clkdiv[CLKDIV_APB5], rcc + RCC_APB5DIVR);
1752 set_clkdiv(clkdiv[CLKDIV_MCU], rcc + RCC_MCUDIVR);
1753 set_clkdiv(clkdiv[CLKDIV_APB1], rcc + RCC_APB1DIVR);
1754 set_clkdiv(clkdiv[CLKDIV_APB2], rcc + RCC_APB2DIVR);
1755 set_clkdiv(clkdiv[CLKDIV_APB3], rcc + RCC_APB3DIVR);
1756
1757 /* no ready bit for RTC */
1758 writel(clkdiv[CLKDIV_RTC] & RCC_DIVR_DIV_MASK, rcc + RCC_RTCDIVR);
1759
1760 /* configure PLLs source */
1761 debug("configure PLLs source\n");
1762 set_clksrc(priv, clksrc[CLKSRC_PLL12]);
1763 set_clksrc(priv, clksrc[CLKSRC_PLL3]);
1764 set_clksrc(priv, clksrc[CLKSRC_PLL4]);
1765
1766 /* configure and start PLLs */
1767 debug("configure PLLs\n");
1768 for (i = 0; i < _PLL_NB; i++) {
1769 u32 fracv;
1770 u32 csg[PLLCSG_NB];
1771
1772 debug("configure PLL %d @ %d\n", i,
1773 ofnode_to_offset(plloff[i]));
1774 if (!ofnode_valid(plloff[i]))
1775 continue;
1776
1777 fracv = ofnode_read_u32_default(plloff[i], "frac", 0);
1778 pll_config(priv, i, pllcfg[i], fracv);
1779 ret = ofnode_read_u32_array(plloff[i], "csg", csg, PLLCSG_NB);
1780 if (!ret) {
1781 pll_csg(priv, i, csg);
1782 } else if (ret != -FDT_ERR_NOTFOUND) {
1783 debug("invalid csg node for pll@%d res=%d\n", i, ret);
1784 return ret;
1785 }
1786 pll_start(priv, i);
1787 }
1788
1789 /* wait and start PLLs ouptut when ready */
1790 for (i = 0; i < _PLL_NB; i++) {
1791 if (!ofnode_valid(plloff[i]))
1792 continue;
1793 debug("output PLL %d\n", i);
1794 pll_output(priv, i, pllcfg[i][PLLCFG_O]);
1795 }
1796
1797 /* wait LSE ready before to use it */
1798 if (priv->osc[_LSE])
1799 stm32mp1_lse_wait(rcc);
1800
1801 /* configure with expected clock source */
1802 debug("CLKSRC\n");
1803 set_clksrc(priv, clksrc[CLKSRC_MPU]);
1804 set_clksrc(priv, clksrc[CLKSRC_AXI]);
1805 set_clksrc(priv, clksrc[CLKSRC_MCU]);
1806 set_rtcsrc(priv, clksrc[CLKSRC_RTC], lse_css);
1807
1808 /* configure PKCK */
1809 debug("PKCK\n");
1810 pkcs_cell = dev_read_prop(dev, "st,pkcs", &len);
1811 if (pkcs_cell) {
1812 bool ckper_disabled = false;
1813
1814 for (i = 0; i < len / sizeof(u32); i++) {
1815 u32 pkcs = (u32)fdt32_to_cpu(pkcs_cell[i]);
1816
1817 if (pkcs == CLK_CKPER_DISABLED) {
1818 ckper_disabled = true;
1819 continue;
1820 }
1821 pkcs_config(priv, pkcs);
1822 }
1823 /* CKPER is source for some peripheral clock
1824 * (FMC-NAND / QPSI-NOR) and switching source is allowed
1825 * only if previous clock is still ON
1826 * => deactivated CKPER only after switching clock
1827 */
1828 if (ckper_disabled)
1829 pkcs_config(priv, CLK_CKPER_DISABLED);
1830 }
1831
Patrick Delaunay938e0e32018-03-20 11:41:25 +01001832 /* STGEN clock source can change with CLK_STGEN_XXX */
1833 stgen_config(priv);
1834
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01001835 debug("oscillator off\n");
1836 /* switch OFF HSI if not found in device-tree */
1837 if (!priv->osc[_HSI])
1838 stm32mp1_hsi_set(rcc, 0);
1839
1840 /* Software Self-Refresh mode (SSR) during DDR initilialization */
1841 clrsetbits_le32(priv->base + RCC_DDRITFCR,
1842 RCC_DDRITFCR_DDRCKMOD_MASK,
1843 RCC_DDRITFCR_DDRCKMOD_SSR <<
1844 RCC_DDRITFCR_DDRCKMOD_SHIFT);
1845
1846 return 0;
1847}
1848#endif /* STM32MP1_CLOCK_TREE_INIT */
1849
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001850static int pll_set_output_rate(struct udevice *dev,
1851 int pll_id,
1852 int div_id,
1853 unsigned long clk_rate)
1854{
1855 struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
1856 const struct stm32mp1_clk_pll *pll = priv->data->pll;
1857 u32 pllxcr = priv->base + pll[pll_id].pllxcr;
1858 int div;
1859 ulong fvco;
1860
1861 if (div_id > _DIV_NB)
1862 return -EINVAL;
1863
1864 fvco = pll_get_fvco(priv, pll_id);
1865
1866 if (fvco <= clk_rate)
1867 div = 1;
1868 else
1869 div = DIV_ROUND_UP(fvco, clk_rate);
1870
1871 if (div > 128)
1872 div = 128;
1873
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001874 /* stop the requested output */
1875 clrbits_le32(pllxcr, 0x1 << div_id << RCC_PLLNCR_DIVEN_SHIFT);
1876 /* change divider */
1877 clrsetbits_le32(priv->base + pll[pll_id].pllxcfgr2,
1878 RCC_PLLNCFGR2_DIVX_MASK << RCC_PLLNCFGR2_SHIFT(div_id),
1879 (div - 1) << RCC_PLLNCFGR2_SHIFT(div_id));
1880 /* start the requested output */
1881 setbits_le32(pllxcr, 0x1 << div_id << RCC_PLLNCR_DIVEN_SHIFT);
1882
1883 return 0;
1884}
1885
1886static ulong stm32mp1_clk_set_rate(struct clk *clk, unsigned long clk_rate)
1887{
1888 struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
1889 int p;
1890
1891 switch (clk->id) {
Patrick Delaunayc3e828b2019-04-18 17:32:48 +02001892#if defined(STM32MP1_CLOCK_TREE_INIT) && \
1893 defined(CONFIG_STM32MP1_DDR_INTERACTIVE)
1894 case DDRPHYC:
1895 break;
1896#endif
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001897 case LTDC_PX:
1898 case DSI_PX:
1899 break;
1900 default:
1901 pr_err("not supported");
1902 return -EINVAL;
1903 }
1904
1905 p = stm32mp1_clk_get_parent(priv, clk->id);
Patrick Delaunay7879a7d2019-07-30 19:16:54 +02001906#ifdef DEBUG
1907 debug("%s: parent = %d:%s\n", __func__, p, stm32mp1_clk_parent_name[p]);
1908#endif
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001909 if (p < 0)
1910 return -EINVAL;
1911
1912 switch (p) {
Patrick Delaunayc3e828b2019-04-18 17:32:48 +02001913#if defined(STM32MP1_CLOCK_TREE_INIT) && \
1914 defined(CONFIG_STM32MP1_DDR_INTERACTIVE)
1915 case _PLL2_R: /* DDRPHYC */
1916 {
1917 /* only for change DDR clock in interactive mode */
1918 ulong result;
1919
1920 set_clksrc(priv, CLK_AXI_HSI);
1921 result = pll_set_rate(clk->dev, _PLL2, _DIV_R, clk_rate);
1922 set_clksrc(priv, CLK_AXI_PLL2P);
1923 return result;
1924 }
1925#endif
Patrick Delaunay7879a7d2019-07-30 19:16:54 +02001926
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02001927 case _PLL4_Q:
1928 /* for LTDC_PX and DSI_PX case */
1929 return pll_set_output_rate(clk->dev, _PLL4, _DIV_Q, clk_rate);
1930 }
1931
1932 return -EINVAL;
1933}
1934
Patrick Delaunaya6151912018-03-12 10:46:15 +01001935static void stm32mp1_osc_clk_init(const char *name,
1936 struct stm32mp1_clk_priv *priv,
1937 int index)
1938{
1939 struct clk clk;
1940 struct udevice *dev = NULL;
1941
1942 priv->osc[index] = 0;
1943 clk.id = 0;
1944 if (!uclass_get_device_by_name(UCLASS_CLK, name, &dev)) {
1945 if (clk_request(dev, &clk))
1946 pr_err("%s request", name);
1947 else
1948 priv->osc[index] = clk_get_rate(&clk);
1949 }
1950 priv->osc_dev[index] = dev;
1951}
1952
1953static void stm32mp1_osc_init(struct udevice *dev)
1954{
1955 struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
1956 int i;
1957 const char *name[NB_OSC] = {
1958 [_LSI] = "clk-lsi",
1959 [_LSE] = "clk-lse",
1960 [_HSI] = "clk-hsi",
1961 [_HSE] = "clk-hse",
1962 [_CSI] = "clk-csi",
1963 [_I2S_CKIN] = "i2s_ckin",
Patrick Delaunay86617dd2019-01-30 13:07:00 +01001964 };
Patrick Delaunaya6151912018-03-12 10:46:15 +01001965
1966 for (i = 0; i < NB_OSC; i++) {
1967 stm32mp1_osc_clk_init(name[i], priv, i);
1968 debug("%d: %s => %x\n", i, name[i], (u32)priv->osc[i]);
1969 }
1970}
1971
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01001972static void __maybe_unused stm32mp1_clk_dump(struct stm32mp1_clk_priv *priv)
1973{
1974 char buf[32];
1975 int i, s, p;
1976
1977 printf("Clocks:\n");
1978 for (i = 0; i < _PARENT_NB; i++) {
1979 printf("- %s : %s MHz\n",
1980 stm32mp1_clk_parent_name[i],
1981 strmhz(buf, stm32mp1_clk_get(priv, i)));
1982 }
1983 printf("Source Clocks:\n");
1984 for (i = 0; i < _PARENT_SEL_NB; i++) {
1985 p = (readl(priv->base + priv->data->sel[i].offset) >>
1986 priv->data->sel[i].src) & priv->data->sel[i].msk;
1987 if (p < priv->data->sel[i].nb_parent) {
1988 s = priv->data->sel[i].parent[p];
1989 printf("- %s(%d) => parent %s(%d)\n",
1990 stm32mp1_clk_parent_sel_name[i], i,
1991 stm32mp1_clk_parent_name[s], s);
1992 } else {
1993 printf("- %s(%d) => parent index %d is invalid\n",
1994 stm32mp1_clk_parent_sel_name[i], i, p);
1995 }
1996 }
1997}
1998
1999#ifdef CONFIG_CMD_CLK
2000int soc_clk_dump(void)
2001{
2002 struct udevice *dev;
2003 struct stm32mp1_clk_priv *priv;
2004 int ret;
2005
2006 ret = uclass_get_device_by_driver(UCLASS_CLK,
2007 DM_GET_DRIVER(stm32mp1_clock),
2008 &dev);
2009 if (ret)
2010 return ret;
2011
2012 priv = dev_get_priv(dev);
2013
2014 stm32mp1_clk_dump(priv);
2015
2016 return 0;
2017}
2018#endif
2019
Patrick Delaunaya6151912018-03-12 10:46:15 +01002020static int stm32mp1_clk_probe(struct udevice *dev)
2021{
2022 int result = 0;
2023 struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
2024
2025 priv->base = dev_read_addr(dev->parent);
2026 if (priv->base == FDT_ADDR_T_NONE)
2027 return -EINVAL;
2028
2029 priv->data = (void *)&stm32mp1_data;
2030
2031 if (!priv->data->gate || !priv->data->sel ||
2032 !priv->data->pll)
2033 return -EINVAL;
2034
2035 stm32mp1_osc_init(dev);
2036
Patrick Delaunay266fa4d2018-03-12 10:46:16 +01002037#ifdef STM32MP1_CLOCK_TREE_INIT
2038 /* clock tree init is done only one time, before relocation */
2039 if (!(gd->flags & GD_FLG_RELOC))
2040 result = stm32mp1_clktree(dev);
2041#endif
2042
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01002043#ifndef CONFIG_SPL_BUILD
2044#if defined(DEBUG)
2045 /* display debug information for probe after relocation */
2046 if (gd->flags & GD_FLG_RELOC)
2047 stm32mp1_clk_dump(priv);
2048#endif
2049
Patrick Delaunay4de076e2019-07-30 19:16:55 +02002050 gd->cpu_clk = stm32mp1_clk_get(priv, _CK_MPU);
2051 gd->bus_clk = stm32mp1_clk_get(priv, _ACLK);
2052 /* DDRPHYC father */
2053 gd->mem_clk = stm32mp1_clk_get(priv, _PLL2_R);
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01002054#if defined(CONFIG_DISPLAY_CPUINFO)
2055 if (gd->flags & GD_FLG_RELOC) {
2056 char buf[32];
2057
2058 printf("Clocks:\n");
Patrick Delaunay4de076e2019-07-30 19:16:55 +02002059 printf("- MPU : %s MHz\n", strmhz(buf, gd->cpu_clk));
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01002060 printf("- MCU : %s MHz\n",
2061 strmhz(buf, stm32mp1_clk_get(priv, _CK_MCU)));
Patrick Delaunay4de076e2019-07-30 19:16:55 +02002062 printf("- AXI : %s MHz\n", strmhz(buf, gd->bus_clk));
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01002063 printf("- PER : %s MHz\n",
2064 strmhz(buf, stm32mp1_clk_get(priv, _CK_PER)));
Patrick Delaunay4de076e2019-07-30 19:16:55 +02002065 printf("- DDR : %s MHz\n", strmhz(buf, gd->mem_clk));
Patrick Delaunay8d6310a2019-01-30 13:07:04 +01002066 }
2067#endif /* CONFIG_DISPLAY_CPUINFO */
2068#endif
2069
Patrick Delaunaya6151912018-03-12 10:46:15 +01002070 return result;
2071}
2072
2073static const struct clk_ops stm32mp1_clk_ops = {
2074 .enable = stm32mp1_clk_enable,
2075 .disable = stm32mp1_clk_disable,
2076 .get_rate = stm32mp1_clk_get_rate,
Patrick Delaunay88fa34d2018-07-16 10:41:43 +02002077 .set_rate = stm32mp1_clk_set_rate,
Patrick Delaunaya6151912018-03-12 10:46:15 +01002078};
2079
Patrick Delaunaya6151912018-03-12 10:46:15 +01002080U_BOOT_DRIVER(stm32mp1_clock) = {
2081 .name = "stm32mp1_clk",
2082 .id = UCLASS_CLK,
Patrick Delaunaya6151912018-03-12 10:46:15 +01002083 .ops = &stm32mp1_clk_ops,
2084 .priv_auto_alloc_size = sizeof(struct stm32mp1_clk_priv),
2085 .probe = stm32mp1_clk_probe,
2086};