1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * SPEAr3xx machines clock framework source file
4 *
5 * Copyright (C) 2012 ST Microelectronics
6 * Viresh Kumar <vireshk@kernel.org>
7 */
8
9#include <linux/clk.h>
10#include <linux/clkdev.h>
11#include <linux/clk/spear.h>
12#include <linux/err.h>
13#include <linux/io.h>
14#include <linux/of.h>
15#include <linux/spinlock_types.h>
16#include "clk.h"
17
18static DEFINE_SPINLOCK(_lock);
19
20#define PLL1_CTR (misc_base + 0x008)
21#define PLL1_FRQ (misc_base + 0x00C)
22#define PLL2_CTR (misc_base + 0x014)
23#define PLL2_FRQ (misc_base + 0x018)
24#define PLL_CLK_CFG (misc_base + 0x020)
25 /* PLL_CLK_CFG register masks */
26 #define MCTR_CLK_SHIFT 28
27 #define MCTR_CLK_MASK 3
28
29#define CORE_CLK_CFG (misc_base + 0x024)
30 /* CORE CLK CFG register masks */
31 #define GEN_SYNTH2_3_CLK_SHIFT 18
32 #define GEN_SYNTH2_3_CLK_MASK 1
33
34 #define HCLK_RATIO_SHIFT 10
35 #define HCLK_RATIO_MASK 2
36 #define PCLK_RATIO_SHIFT 8
37 #define PCLK_RATIO_MASK 2
38
39#define PERIP_CLK_CFG (misc_base + 0x028)
40 /* PERIP_CLK_CFG register masks */
41 #define UART_CLK_SHIFT 4
42 #define UART_CLK_MASK 1
43 #define FIRDA_CLK_SHIFT 5
44 #define FIRDA_CLK_MASK 2
45 #define GPT0_CLK_SHIFT 8
46 #define GPT1_CLK_SHIFT 11
47 #define GPT2_CLK_SHIFT 12
48 #define GPT_CLK_MASK 1
49
50#define PERIP1_CLK_ENB (misc_base + 0x02C)
51 /* PERIP1_CLK_ENB register masks */
52 #define UART_CLK_ENB 3
53 #define SSP_CLK_ENB 5
54 #define I2C_CLK_ENB 7
55 #define JPEG_CLK_ENB 8
56 #define FIRDA_CLK_ENB 10
57 #define GPT1_CLK_ENB 11
58 #define GPT2_CLK_ENB 12
59 #define ADC_CLK_ENB 15
60 #define RTC_CLK_ENB 17
61 #define GPIO_CLK_ENB 18
62 #define DMA_CLK_ENB 19
63 #define SMI_CLK_ENB 21
64 #define GMAC_CLK_ENB 23
65 #define USBD_CLK_ENB 24
66 #define USBH_CLK_ENB 25
67 #define C3_CLK_ENB 31
68
69#define RAS_CLK_ENB (misc_base + 0x034)
70 #define RAS_AHB_CLK_ENB 0
71 #define RAS_PLL1_CLK_ENB 1
72 #define RAS_APB_CLK_ENB 2
73 #define RAS_32K_CLK_ENB 3
74 #define RAS_24M_CLK_ENB 4
75 #define RAS_48M_CLK_ENB 5
76 #define RAS_PLL2_CLK_ENB 7
77 #define RAS_SYNT0_CLK_ENB 8
78 #define RAS_SYNT1_CLK_ENB 9
79 #define RAS_SYNT2_CLK_ENB 10
80 #define RAS_SYNT3_CLK_ENB 11
81
82#define PRSC0_CLK_CFG (misc_base + 0x044)
83#define PRSC1_CLK_CFG (misc_base + 0x048)
84#define PRSC2_CLK_CFG (misc_base + 0x04C)
85#define AMEM_CLK_CFG (misc_base + 0x050)
86 #define AMEM_CLK_ENB 0
87
88#define CLCD_CLK_SYNT (misc_base + 0x05C)
89#define FIRDA_CLK_SYNT (misc_base + 0x060)
90#define UART_CLK_SYNT (misc_base + 0x064)
91#define GMAC_CLK_SYNT (misc_base + 0x068)
92#define GEN0_CLK_SYNT (misc_base + 0x06C)
93#define GEN1_CLK_SYNT (misc_base + 0x070)
94#define GEN2_CLK_SYNT (misc_base + 0x074)
95#define GEN3_CLK_SYNT (misc_base + 0x078)
96
97/* pll rate configuration table, in ascending order of rates */
98static struct pll_rate_tbl pll_rtbl[] = {
99 {.mode = 0, .m = 0x53, .n = 0x0C, .p = 0x1}, /* vco 332 & pll 166 MHz */
100 {.mode = 0, .m = 0x85, .n = 0x0C, .p = 0x1}, /* vco 532 & pll 266 MHz */
101 {.mode = 0, .m = 0xA6, .n = 0x0C, .p = 0x1}, /* vco 664 & pll 332 MHz */
102};
103
104/* aux rate configuration table, in ascending order of rates */
105static struct aux_rate_tbl aux_rtbl[] = {
106 /* For PLL1 = 332 MHz */
107 {.xscale = 1, .yscale = 81, .eq = 0}, /* 2.049 MHz */
108 {.xscale = 1, .yscale = 59, .eq = 0}, /* 2.822 MHz */
109 {.xscale = 2, .yscale = 81, .eq = 0}, /* 4.098 MHz */
110 {.xscale = 3, .yscale = 89, .eq = 0}, /* 5.644 MHz */
111 {.xscale = 4, .yscale = 81, .eq = 0}, /* 8.197 MHz */
112 {.xscale = 4, .yscale = 59, .eq = 0}, /* 11.254 MHz */
113 {.xscale = 2, .yscale = 27, .eq = 0}, /* 12.296 MHz */
114 {.xscale = 2, .yscale = 8, .eq = 0}, /* 41.5 MHz */
115 {.xscale = 2, .yscale = 4, .eq = 0}, /* 83 MHz */
116 {.xscale = 1, .yscale = 2, .eq = 1}, /* 166 MHz */
117};
118
119/* gpt rate configuration table, in ascending order of rates */
120static struct gpt_rate_tbl gpt_rtbl[] = {
121 /* For pll1 = 332 MHz */
122 {.mscale = 4, .nscale = 0}, /* 41.5 MHz */
123 {.mscale = 2, .nscale = 0}, /* 55.3 MHz */
124 {.mscale = 1, .nscale = 0}, /* 83 MHz */
125};
126
127/* clock parents */
128static const char *uart0_parents[] = { "pll3_clk", "uart_syn_gclk", };
129static const char *firda_parents[] = { "pll3_clk", "firda_syn_gclk",
130};
131static const char *gpt0_parents[] = { "pll3_clk", "gpt0_syn_clk", };
132static const char *gpt1_parents[] = { "pll3_clk", "gpt1_syn_clk", };
133static const char *gpt2_parents[] = { "pll3_clk", "gpt2_syn_clk", };
134static const char *gen2_3_parents[] = { "pll1_clk", "pll2_clk", };
135static const char *ddr_parents[] = { "ahb_clk", "ahbmult2_clk", "none",
136 "pll2_clk", };
137
138#ifdef CONFIG_MACH_SPEAR300
139static void __init spear300_clk_init(void)
140{
141 struct clk *clk;
142
143 clk = clk_register_fixed_factor(NULL, "clcd_clk", "ras_pll3_clk", 0,
144 1, 1);
145 clk_register_clkdev(clk, NULL, "60000000.clcd");
146
147 clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
148 1);
149 clk_register_clkdev(clk, NULL, "94000000.flash");
150
151 clk = clk_register_fixed_factor(NULL, "sdhci_clk", "ras_ahb_clk", 0, 1,
152 1);
153 clk_register_clkdev(clk, NULL, "70000000.sdhci");
154
155 clk = clk_register_fixed_factor(NULL, "gpio1_clk", "ras_apb_clk", 0, 1,
156 1);
157 clk_register_clkdev(clk, NULL, "a9000000.gpio");
158
159 clk = clk_register_fixed_factor(NULL, "kbd_clk", "ras_apb_clk", 0, 1,
160 1);
161 clk_register_clkdev(clk, NULL, "a0000000.kbd");
162}
163#else
164static inline void spear300_clk_init(void) { }
165#endif
166
167/* array of all spear 310 clock lookups */
168#ifdef CONFIG_MACH_SPEAR310
169static void __init spear310_clk_init(void)
170{
171 struct clk *clk;
172
173 clk = clk_register_fixed_factor(NULL, "emi_clk", "ras_ahb_clk", 0, 1,
174 1);
175 clk_register_clkdev(clk, "emi", NULL);
176
177 clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
178 1);
179 clk_register_clkdev(clk, NULL, "44000000.flash");
180
181 clk = clk_register_fixed_factor(NULL, "tdm_clk", "ras_ahb_clk", 0, 1,
182 1);
183 clk_register_clkdev(clk, NULL, "tdm");
184
185 clk = clk_register_fixed_factor(NULL, "uart1_clk", "ras_apb_clk", 0, 1,
186 1);
187 clk_register_clkdev(clk, NULL, "b2000000.serial");
188
189 clk = clk_register_fixed_factor(NULL, "uart2_clk", "ras_apb_clk", 0, 1,
190 1);
191 clk_register_clkdev(clk, NULL, "b2080000.serial");
192
193 clk = clk_register_fixed_factor(NULL, "uart3_clk", "ras_apb_clk", 0, 1,
194 1);
195 clk_register_clkdev(clk, NULL, "b2100000.serial");
196
197 clk = clk_register_fixed_factor(NULL, "uart4_clk", "ras_apb_clk", 0, 1,
198 1);
199 clk_register_clkdev(clk, NULL, "b2180000.serial");
200
201 clk = clk_register_fixed_factor(NULL, "uart5_clk", "ras_apb_clk", 0, 1,
202 1);
203 clk_register_clkdev(clk, NULL, "b2200000.serial");
204}
205#else
206static inline void spear310_clk_init(void) { }
207#endif
208
209/* array of all spear 320 clock lookups */
210#ifdef CONFIG_MACH_SPEAR320
211
212#define SPEAR320_CONTROL_REG (soc_config_base + 0x0010)
213#define SPEAR320_EXT_CTRL_REG (soc_config_base + 0x0018)
214
215 #define SPEAR320_UARTX_PCLK_MASK 0x1
216 #define SPEAR320_UART2_PCLK_SHIFT 8
217 #define SPEAR320_UART3_PCLK_SHIFT 9
218 #define SPEAR320_UART4_PCLK_SHIFT 10
219 #define SPEAR320_UART5_PCLK_SHIFT 11
220 #define SPEAR320_UART6_PCLK_SHIFT 12
221 #define SPEAR320_RS485_PCLK_SHIFT 13
222 #define SMII_PCLK_SHIFT 18
223 #define SMII_PCLK_MASK 2
224 #define SMII_PCLK_VAL_PAD 0x0
225 #define SMII_PCLK_VAL_PLL2 0x1
226 #define SMII_PCLK_VAL_SYNTH0 0x2
227 #define SDHCI_PCLK_SHIFT 15
228 #define SDHCI_PCLK_MASK 1
229 #define SDHCI_PCLK_VAL_48M 0x0
230 #define SDHCI_PCLK_VAL_SYNTH3 0x1
231 #define I2S_REF_PCLK_SHIFT 8
232 #define I2S_REF_PCLK_MASK 1
233 #define I2S_REF_PCLK_SYNTH_VAL 0x1
234 #define I2S_REF_PCLK_PLL2_VAL 0x0
235 #define UART1_PCLK_SHIFT 6
236 #define UART1_PCLK_MASK 1
237 #define SPEAR320_UARTX_PCLK_VAL_SYNTH1 0x0
238 #define SPEAR320_UARTX_PCLK_VAL_APB 0x1
239
240static const char *i2s_ref_parents[] = { "ras_pll2_clk", "ras_syn2_gclk", };
241static const char *sdhci_parents[] = { "ras_pll3_clk", "ras_syn3_gclk", };
242static const char *smii0_parents[] = { "smii_125m_pad", "ras_pll2_clk",
243 "ras_syn0_gclk", };
244static const char *uartx_parents[] = { "ras_syn1_gclk", "ras_apb_clk", };
245
246static void __init spear320_clk_init(void __iomem *soc_config_base,
247 struct clk *ras_apb_clk)
248{
249 struct clk *clk;
250
251 clk = clk_register_fixed_rate(NULL, "smii_125m_pad_clk", NULL,
252 0, 125000000);
253 clk_register_clkdev(clk, "smii_125m_pad", NULL);
254
255 clk = clk_register_fixed_factor(NULL, "clcd_clk", "ras_pll3_clk", 0,
256 1, 1);
257 clk_register_clkdev(clk, NULL, "90000000.clcd");
258
259 clk = clk_register_fixed_factor(NULL, "emi_clk", "ras_ahb_clk", 0, 1,
260 1);
261 clk_register_clkdev(clk, "emi", NULL);
262
263 clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
264 1);
265 clk_register_clkdev(clk, NULL, "4c000000.flash");
266
267 clk = clk_register_fixed_factor(NULL, "i2c1_clk", "ras_ahb_clk", 0, 1,
268 1);
269 clk_register_clkdev(clk, NULL, "a7000000.i2c");
270
271 clk = clk_register_fixed_factor(NULL, "pwm_clk", "ras_ahb_clk", 0, 1,
272 1);
273 clk_register_clkdev(clk, NULL, "a8000000.pwm");
274
275 clk = clk_register_fixed_factor(NULL, "ssp1_clk", "ras_ahb_clk", 0, 1,
276 1);
277 clk_register_clkdev(clk, NULL, "a5000000.spi");
278
279 clk = clk_register_fixed_factor(NULL, "ssp2_clk", "ras_ahb_clk", 0, 1,
280 1);
281 clk_register_clkdev(clk, NULL, "a6000000.spi");
282
283 clk = clk_register_fixed_factor(NULL, "can0_clk", "ras_apb_clk", 0, 1,
284 1);
285 clk_register_clkdev(clk, NULL, "c_can_platform.0");
286
287 clk = clk_register_fixed_factor(NULL, "can1_clk", "ras_apb_clk", 0, 1,
288 1);
289 clk_register_clkdev(clk, NULL, "c_can_platform.1");
290
291 clk = clk_register_fixed_factor(NULL, "i2s_clk", "ras_apb_clk", 0, 1,
292 1);
293 clk_register_clkdev(clk, NULL, "a9400000.i2s");
294
295 clk = clk_register_mux(NULL, "i2s_ref_clk", i2s_ref_parents,
296 ARRAY_SIZE(i2s_ref_parents),
297 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
298 SPEAR320_CONTROL_REG, I2S_REF_PCLK_SHIFT,
299 I2S_REF_PCLK_MASK, 0, &_lock);
300 clk_register_clkdev(clk, "i2s_ref_clk", NULL);
301
302 clk = clk_register_fixed_factor(NULL, "i2s_sclk", "i2s_ref_clk",
303 CLK_SET_RATE_PARENT, 1,
304 4);
305 clk_register_clkdev(clk, "i2s_sclk", NULL);
306
307 clk = clk_register_fixed_factor(NULL, "macb1_clk", "ras_apb_clk", 0, 1,
308 1);
309 clk_register_clkdev(clk, "hclk", "aa000000.eth");
310
311 clk = clk_register_fixed_factor(NULL, "macb2_clk", "ras_apb_clk", 0, 1,
312 1);
313 clk_register_clkdev(clk, "hclk", "ab000000.eth");
314
315 clk = clk_register_mux(NULL, "rs485_clk", uartx_parents,
316 ARRAY_SIZE(uartx_parents),
317 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
318 SPEAR320_EXT_CTRL_REG, SPEAR320_RS485_PCLK_SHIFT,
319 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
320 clk_register_clkdev(clk, NULL, "a9300000.serial");
321
322 clk = clk_register_mux(NULL, "sdhci_clk", sdhci_parents,
323 ARRAY_SIZE(sdhci_parents),
324 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
325 SPEAR320_CONTROL_REG, SDHCI_PCLK_SHIFT, SDHCI_PCLK_MASK,
326 0, &_lock);
327 clk_register_clkdev(clk, NULL, "70000000.sdhci");
328
329 clk = clk_register_mux(NULL, "smii_pclk", smii0_parents,
330 ARRAY_SIZE(smii0_parents), CLK_SET_RATE_NO_REPARENT,
331 SPEAR320_CONTROL_REG, SMII_PCLK_SHIFT, SMII_PCLK_MASK,
332 0, &_lock);
333 clk_register_clkdev(clk, NULL, "smii_pclk");
334
335 clk = clk_register_fixed_factor(NULL, "smii_clk", "smii_pclk", 0, 1, 1);
336 clk_register_clkdev(clk, NULL, "smii");
337
338 clk = clk_register_mux(NULL, "uart1_clk", uartx_parents,
339 ARRAY_SIZE(uartx_parents),
340 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
341 SPEAR320_CONTROL_REG, UART1_PCLK_SHIFT, UART1_PCLK_MASK,
342 0, &_lock);
343 clk_register_clkdev(clk, NULL, "a3000000.serial");
344 /* Enforce ras_apb_clk */
345 clk_set_parent(clk, ras_apb_clk);
346
347 clk = clk_register_mux(NULL, "uart2_clk", uartx_parents,
348 ARRAY_SIZE(uartx_parents),
349 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
350 SPEAR320_EXT_CTRL_REG, SPEAR320_UART2_PCLK_SHIFT,
351 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
352 clk_register_clkdev(clk, NULL, "a4000000.serial");
353 /* Enforce ras_apb_clk */
354 clk_set_parent(clk, ras_apb_clk);
355
356 clk = clk_register_mux(NULL, "uart3_clk", uartx_parents,
357 ARRAY_SIZE(uartx_parents),
358 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
359 SPEAR320_EXT_CTRL_REG, SPEAR320_UART3_PCLK_SHIFT,
360 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
361 clk_register_clkdev(clk, NULL, "a9100000.serial");
362
363 clk = clk_register_mux(NULL, "uart4_clk", uartx_parents,
364 ARRAY_SIZE(uartx_parents),
365 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
366 SPEAR320_EXT_CTRL_REG, SPEAR320_UART4_PCLK_SHIFT,
367 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
368 clk_register_clkdev(clk, NULL, "a9200000.serial");
369
370 clk = clk_register_mux(NULL, "uart5_clk", uartx_parents,
371 ARRAY_SIZE(uartx_parents),
372 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
373 SPEAR320_EXT_CTRL_REG, SPEAR320_UART5_PCLK_SHIFT,
374 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
375 clk_register_clkdev(clk, NULL, "60000000.serial");
376
377 clk = clk_register_mux(NULL, "uart6_clk", uartx_parents,
378 ARRAY_SIZE(uartx_parents),
379 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
380 SPEAR320_EXT_CTRL_REG, SPEAR320_UART6_PCLK_SHIFT,
381 SPEAR320_UARTX_PCLK_MASK, 0, &_lock);
382 clk_register_clkdev(clk, NULL, "60100000.serial");
383}
384#else
385static inline void spear320_clk_init(void __iomem *sb, struct clk *rc) { }
386#endif
387
388void __init spear3xx_clk_init(void __iomem *misc_base, void __iomem *soc_config_base)
389{
390 struct clk *clk, *clk1, *ras_apb_clk;
391
392 clk = clk_register_fixed_rate(NULL, name: "osc_32k_clk", NULL, flags: 0, fixed_rate: 32000);
393 clk_register_clkdev(clk, "osc_32k_clk", NULL);
394
395 clk = clk_register_fixed_rate(NULL, name: "osc_24m_clk", NULL, flags: 0, fixed_rate: 24000000);
396 clk_register_clkdev(clk, "osc_24m_clk", NULL);
397
398 /* clock derived from 32 KHz osc clk */
399 clk = clk_register_gate(NULL, name: "rtc-spear", parent_name: "osc_32k_clk", flags: 0,
400 PERIP1_CLK_ENB, RTC_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
401 clk_register_clkdev(clk, NULL, "fc900000.rtc");
402
403 /* clock derived from 24 MHz osc clk */
404 clk = clk_register_fixed_rate(NULL, name: "pll3_clk", parent_name: "osc_24m_clk", flags: 0,
405 fixed_rate: 48000000);
406 clk_register_clkdev(clk, "pll3_clk", NULL);
407
408 clk = clk_register_fixed_factor(NULL, name: "wdt_clk", parent_name: "osc_24m_clk", flags: 0, mult: 1,
409 div: 1);
410 clk_register_clkdev(clk, NULL, "fc880000.wdt");
411
412 clk = clk_register_vco_pll(vco_name: "vco1_clk", pll_name: "pll1_clk", NULL,
413 parent_name: "osc_24m_clk", flags: 0, PLL1_CTR, PLL1_FRQ, rtbl: pll_rtbl,
414 ARRAY_SIZE(pll_rtbl), lock: &_lock, pll_clk: &clk1, NULL);
415 clk_register_clkdev(clk, "vco1_clk", NULL);
416 clk_register_clkdev(clk1, "pll1_clk", NULL);
417
418 clk = clk_register_vco_pll(vco_name: "vco2_clk", pll_name: "pll2_clk", NULL,
419 parent_name: "osc_24m_clk", flags: 0, PLL2_CTR, PLL2_FRQ, rtbl: pll_rtbl,
420 ARRAY_SIZE(pll_rtbl), lock: &_lock, pll_clk: &clk1, NULL);
421 clk_register_clkdev(clk, "vco2_clk", NULL);
422 clk_register_clkdev(clk1, "pll2_clk", NULL);
423
424 /* clock derived from pll1 clk */
425 clk = clk_register_fixed_factor(NULL, name: "cpu_clk", parent_name: "pll1_clk",
426 CLK_SET_RATE_PARENT, mult: 1, div: 1);
427 clk_register_clkdev(clk, "cpu_clk", NULL);
428
429 clk = clk_register_divider(NULL, "ahb_clk", "pll1_clk",
430 CLK_SET_RATE_PARENT, CORE_CLK_CFG, HCLK_RATIO_SHIFT,
431 HCLK_RATIO_MASK, 0, &_lock);
432 clk_register_clkdev(clk, "ahb_clk", NULL);
433
434 clk = clk_register_aux(aux_name: "uart_syn_clk", gate_name: "uart_syn_gclk", parent_name: "pll1_clk", flags: 0,
435 UART_CLK_SYNT, NULL, rtbl: aux_rtbl, ARRAY_SIZE(aux_rtbl),
436 lock: &_lock, gate_clk: &clk1);
437 clk_register_clkdev(clk, "uart_syn_clk", NULL);
438 clk_register_clkdev(clk1, "uart_syn_gclk", NULL);
439
440 clk = clk_register_mux(NULL, "uart0_mclk", uart0_parents,
441 ARRAY_SIZE(uart0_parents),
442 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
443 PERIP_CLK_CFG, UART_CLK_SHIFT, UART_CLK_MASK, 0,
444 &_lock);
445 clk_register_clkdev(clk, "uart0_mclk", NULL);
446
447 clk = clk_register_gate(NULL, name: "uart0", parent_name: "uart0_mclk",
448 CLK_SET_RATE_PARENT, PERIP1_CLK_ENB, UART_CLK_ENB, clk_gate_flags: 0,
449 lock: &_lock);
450 clk_register_clkdev(clk, NULL, "d0000000.serial");
451
452 clk = clk_register_aux(aux_name: "firda_syn_clk", gate_name: "firda_syn_gclk", parent_name: "pll1_clk", flags: 0,
453 FIRDA_CLK_SYNT, NULL, rtbl: aux_rtbl, ARRAY_SIZE(aux_rtbl),
454 lock: &_lock, gate_clk: &clk1);
455 clk_register_clkdev(clk, "firda_syn_clk", NULL);
456 clk_register_clkdev(clk1, "firda_syn_gclk", NULL);
457
458 clk = clk_register_mux(NULL, "firda_mclk", firda_parents,
459 ARRAY_SIZE(firda_parents),
460 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
461 PERIP_CLK_CFG, FIRDA_CLK_SHIFT, FIRDA_CLK_MASK, 0,
462 &_lock);
463 clk_register_clkdev(clk, "firda_mclk", NULL);
464
465 clk = clk_register_gate(NULL, name: "firda_clk", parent_name: "firda_mclk",
466 CLK_SET_RATE_PARENT, PERIP1_CLK_ENB, FIRDA_CLK_ENB, clk_gate_flags: 0,
467 lock: &_lock);
468 clk_register_clkdev(clk, NULL, "firda");
469
470 /* gpt clocks */
471 clk_register_gpt(name: "gpt0_syn_clk", parent_name: "pll1_clk", flags: 0, PRSC0_CLK_CFG, rtbl: gpt_rtbl,
472 ARRAY_SIZE(gpt_rtbl), lock: &_lock);
473 clk = clk_register_mux(NULL, "gpt0_clk", gpt0_parents,
474 ARRAY_SIZE(gpt0_parents),
475 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
476 PERIP_CLK_CFG, GPT0_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
477 clk_register_clkdev(clk, NULL, "gpt0");
478
479 clk_register_gpt(name: "gpt1_syn_clk", parent_name: "pll1_clk", flags: 0, PRSC1_CLK_CFG, rtbl: gpt_rtbl,
480 ARRAY_SIZE(gpt_rtbl), lock: &_lock);
481 clk = clk_register_mux(NULL, "gpt1_mclk", gpt1_parents,
482 ARRAY_SIZE(gpt1_parents),
483 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
484 PERIP_CLK_CFG, GPT1_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
485 clk_register_clkdev(clk, "gpt1_mclk", NULL);
486 clk = clk_register_gate(NULL, name: "gpt1_clk", parent_name: "gpt1_mclk",
487 CLK_SET_RATE_PARENT, PERIP1_CLK_ENB, GPT1_CLK_ENB, clk_gate_flags: 0,
488 lock: &_lock);
489 clk_register_clkdev(clk, NULL, "gpt1");
490
491 clk_register_gpt(name: "gpt2_syn_clk", parent_name: "pll1_clk", flags: 0, PRSC2_CLK_CFG, rtbl: gpt_rtbl,
492 ARRAY_SIZE(gpt_rtbl), lock: &_lock);
493 clk = clk_register_mux(NULL, "gpt2_mclk", gpt2_parents,
494 ARRAY_SIZE(gpt2_parents),
495 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
496 PERIP_CLK_CFG, GPT2_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
497 clk_register_clkdev(clk, "gpt2_mclk", NULL);
498 clk = clk_register_gate(NULL, name: "gpt2_clk", parent_name: "gpt2_mclk",
499 CLK_SET_RATE_PARENT, PERIP1_CLK_ENB, GPT2_CLK_ENB, clk_gate_flags: 0,
500 lock: &_lock);
501 clk_register_clkdev(clk, NULL, "gpt2");
502
503 /* general synths clocks */
504 clk = clk_register_aux(aux_name: "gen0_syn_clk", gate_name: "gen0_syn_gclk", parent_name: "pll1_clk",
505 flags: 0, GEN0_CLK_SYNT, NULL, rtbl: aux_rtbl, ARRAY_SIZE(aux_rtbl),
506 lock: &_lock, gate_clk: &clk1);
507 clk_register_clkdev(clk, "gen0_syn_clk", NULL);
508 clk_register_clkdev(clk1, "gen0_syn_gclk", NULL);
509
510 clk = clk_register_aux(aux_name: "gen1_syn_clk", gate_name: "gen1_syn_gclk", parent_name: "pll1_clk",
511 flags: 0, GEN1_CLK_SYNT, NULL, rtbl: aux_rtbl, ARRAY_SIZE(aux_rtbl),
512 lock: &_lock, gate_clk: &clk1);
513 clk_register_clkdev(clk, "gen1_syn_clk", NULL);
514 clk_register_clkdev(clk1, "gen1_syn_gclk", NULL);
515
516 clk = clk_register_mux(NULL, "gen2_3_par_clk", gen2_3_parents,
517 ARRAY_SIZE(gen2_3_parents), CLK_SET_RATE_NO_REPARENT,
518 CORE_CLK_CFG, GEN_SYNTH2_3_CLK_SHIFT,
519 GEN_SYNTH2_3_CLK_MASK, 0, &_lock);
520 clk_register_clkdev(clk, "gen2_3_par_clk", NULL);
521
522 clk = clk_register_aux(aux_name: "gen2_syn_clk", gate_name: "gen2_syn_gclk",
523 parent_name: "gen2_3_par_clk", flags: 0, GEN2_CLK_SYNT, NULL, rtbl: aux_rtbl,
524 ARRAY_SIZE(aux_rtbl), lock: &_lock, gate_clk: &clk1);
525 clk_register_clkdev(clk, "gen2_syn_clk", NULL);
526 clk_register_clkdev(clk1, "gen2_syn_gclk", NULL);
527
528 clk = clk_register_aux(aux_name: "gen3_syn_clk", gate_name: "gen3_syn_gclk",
529 parent_name: "gen2_3_par_clk", flags: 0, GEN3_CLK_SYNT, NULL, rtbl: aux_rtbl,
530 ARRAY_SIZE(aux_rtbl), lock: &_lock, gate_clk: &clk1);
531 clk_register_clkdev(clk, "gen3_syn_clk", NULL);
532 clk_register_clkdev(clk1, "gen3_syn_gclk", NULL);
533
534 /* clock derived from pll3 clk */
535 clk = clk_register_gate(NULL, name: "usbh_clk", parent_name: "pll3_clk", flags: 0, PERIP1_CLK_ENB,
536 USBH_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
537 clk_register_clkdev(clk, NULL, "e1800000.ehci");
538 clk_register_clkdev(clk, NULL, "e1900000.ohci");
539 clk_register_clkdev(clk, NULL, "e2100000.ohci");
540
541 clk = clk_register_fixed_factor(NULL, name: "usbh.0_clk", parent_name: "usbh_clk", flags: 0, mult: 1,
542 div: 1);
543 clk_register_clkdev(clk, "usbh.0_clk", NULL);
544
545 clk = clk_register_fixed_factor(NULL, name: "usbh.1_clk", parent_name: "usbh_clk", flags: 0, mult: 1,
546 div: 1);
547 clk_register_clkdev(clk, "usbh.1_clk", NULL);
548
549 clk = clk_register_gate(NULL, name: "usbd_clk", parent_name: "pll3_clk", flags: 0, PERIP1_CLK_ENB,
550 USBD_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
551 clk_register_clkdev(clk, NULL, "e1100000.usbd");
552
553 /* clock derived from ahb clk */
554 clk = clk_register_fixed_factor(NULL, name: "ahbmult2_clk", parent_name: "ahb_clk", flags: 0, mult: 2,
555 div: 1);
556 clk_register_clkdev(clk, "ahbmult2_clk", NULL);
557
558 clk = clk_register_mux(NULL, "ddr_clk", ddr_parents,
559 ARRAY_SIZE(ddr_parents), CLK_SET_RATE_NO_REPARENT,
560 PLL_CLK_CFG, MCTR_CLK_SHIFT, MCTR_CLK_MASK, 0, &_lock);
561 clk_register_clkdev(clk, "ddr_clk", NULL);
562
563 clk = clk_register_divider(NULL, "apb_clk", "ahb_clk",
564 CLK_SET_RATE_PARENT, CORE_CLK_CFG, PCLK_RATIO_SHIFT,
565 PCLK_RATIO_MASK, 0, &_lock);
566 clk_register_clkdev(clk, "apb_clk", NULL);
567
568 clk = clk_register_gate(NULL, name: "amem_clk", parent_name: "ahb_clk", flags: 0, AMEM_CLK_CFG,
569 AMEM_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
570 clk_register_clkdev(clk, "amem_clk", NULL);
571
572 clk = clk_register_gate(NULL, name: "c3_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
573 C3_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
574 clk_register_clkdev(clk, NULL, "c3_clk");
575
576 clk = clk_register_gate(NULL, name: "dma_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
577 DMA_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
578 clk_register_clkdev(clk, NULL, "fc400000.dma");
579
580 clk = clk_register_gate(NULL, name: "gmac_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
581 GMAC_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
582 clk_register_clkdev(clk, NULL, "e0800000.eth");
583
584 clk = clk_register_gate(NULL, name: "i2c0_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
585 I2C_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
586 clk_register_clkdev(clk, NULL, "d0180000.i2c");
587
588 clk = clk_register_gate(NULL, name: "jpeg_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
589 JPEG_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
590 clk_register_clkdev(clk, NULL, "jpeg");
591
592 clk = clk_register_gate(NULL, name: "smi_clk", parent_name: "ahb_clk", flags: 0, PERIP1_CLK_ENB,
593 SMI_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
594 clk_register_clkdev(clk, NULL, "fc000000.flash");
595
596 /* clock derived from apb clk */
597 clk = clk_register_gate(NULL, name: "adc_clk", parent_name: "apb_clk", flags: 0, PERIP1_CLK_ENB,
598 ADC_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
599 clk_register_clkdev(clk, NULL, "d0080000.adc");
600
601 clk = clk_register_gate(NULL, name: "gpio0_clk", parent_name: "apb_clk", flags: 0, PERIP1_CLK_ENB,
602 GPIO_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
603 clk_register_clkdev(clk, NULL, "fc980000.gpio");
604
605 clk = clk_register_gate(NULL, name: "ssp0_clk", parent_name: "apb_clk", flags: 0, PERIP1_CLK_ENB,
606 SSP_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
607 clk_register_clkdev(clk, NULL, "d0100000.spi");
608
609 /* RAS clk enable */
610 clk = clk_register_gate(NULL, name: "ras_ahb_clk", parent_name: "ahb_clk", flags: 0, RAS_CLK_ENB,
611 RAS_AHB_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
612 clk_register_clkdev(clk, "ras_ahb_clk", NULL);
613
614 clk = clk_register_gate(NULL, name: "ras_apb_clk", parent_name: "apb_clk", flags: 0, RAS_CLK_ENB,
615 RAS_APB_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
616 clk_register_clkdev(clk, "ras_apb_clk", NULL);
617 ras_apb_clk = clk;
618
619 clk = clk_register_gate(NULL, name: "ras_32k_clk", parent_name: "osc_32k_clk", flags: 0,
620 RAS_CLK_ENB, RAS_32K_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
621 clk_register_clkdev(clk, "ras_32k_clk", NULL);
622
623 clk = clk_register_gate(NULL, name: "ras_24m_clk", parent_name: "osc_24m_clk", flags: 0,
624 RAS_CLK_ENB, RAS_24M_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
625 clk_register_clkdev(clk, "ras_24m_clk", NULL);
626
627 clk = clk_register_gate(NULL, name: "ras_pll1_clk", parent_name: "pll1_clk", flags: 0,
628 RAS_CLK_ENB, RAS_PLL1_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
629 clk_register_clkdev(clk, "ras_pll1_clk", NULL);
630
631 clk = clk_register_gate(NULL, name: "ras_pll2_clk", parent_name: "pll2_clk", flags: 0,
632 RAS_CLK_ENB, RAS_PLL2_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
633 clk_register_clkdev(clk, "ras_pll2_clk", NULL);
634
635 clk = clk_register_gate(NULL, name: "ras_pll3_clk", parent_name: "pll3_clk", flags: 0,
636 RAS_CLK_ENB, RAS_48M_CLK_ENB, clk_gate_flags: 0, lock: &_lock);
637 clk_register_clkdev(clk, "ras_pll3_clk", NULL);
638
639 clk = clk_register_gate(NULL, name: "ras_syn0_gclk", parent_name: "gen0_syn_gclk",
640 CLK_SET_RATE_PARENT, RAS_CLK_ENB, RAS_SYNT0_CLK_ENB, clk_gate_flags: 0,
641 lock: &_lock);
642 clk_register_clkdev(clk, "ras_syn0_gclk", NULL);
643
644 clk = clk_register_gate(NULL, name: "ras_syn1_gclk", parent_name: "gen1_syn_gclk",
645 CLK_SET_RATE_PARENT, RAS_CLK_ENB, RAS_SYNT1_CLK_ENB, clk_gate_flags: 0,
646 lock: &_lock);
647 clk_register_clkdev(clk, "ras_syn1_gclk", NULL);
648
649 clk = clk_register_gate(NULL, name: "ras_syn2_gclk", parent_name: "gen2_syn_gclk",
650 CLK_SET_RATE_PARENT, RAS_CLK_ENB, RAS_SYNT2_CLK_ENB, clk_gate_flags: 0,
651 lock: &_lock);
652 clk_register_clkdev(clk, "ras_syn2_gclk", NULL);
653
654 clk = clk_register_gate(NULL, name: "ras_syn3_gclk", parent_name: "gen3_syn_gclk",
655 CLK_SET_RATE_PARENT, RAS_CLK_ENB, RAS_SYNT3_CLK_ENB, clk_gate_flags: 0,
656 lock: &_lock);
657 clk_register_clkdev(clk, "ras_syn3_gclk", NULL);
658
659 if (of_machine_is_compatible(compat: "st,spear300"))
660 spear300_clk_init();
661 else if (of_machine_is_compatible(compat: "st,spear310"))
662 spear310_clk_init();
663 else if (of_machine_is_compatible(compat: "st,spear320"))
664 spear320_clk_init(sb: soc_config_base, rc: ras_apb_clk);
665}
666

source code of linux/drivers/clk/spear/spear3xx_clock.c