xref: /linux/drivers/clk/pxa/clk-pxa3xx.c (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Marvell PXA3xxx family clocks
4  *
5  * Copyright (C) 2014 Robert Jarzmik
6  *
7  * Heavily inspired from former arch/arm/mach-pxa/pxa3xx.c
8  *
9  * For non-devicetree platforms. Once pxa is fully converted to devicetree, this
10  * should go away.
11  */
12 #include <linux/io.h>
13 #include <linux/clk.h>
14 #include <linux/clk-provider.h>
15 #include <linux/clkdev.h>
16 #include <linux/of.h>
17 #include <linux/soc/pxa/cpu.h>
18 #include <linux/soc/pxa/smemc.h>
19 #include <linux/clk/pxa.h>
20 
21 #include <dt-bindings/clock/pxa-clock.h>
22 #include "clk-pxa.h"
23 
24 #define KHz 1000
25 #define MHz (1000 * 1000)
26 
27 #define ACCR			(0x0000)	/* Application Subsystem Clock Configuration Register */
28 #define ACSR			(0x0004)	/* Application Subsystem Clock Status Register */
29 #define AICSR			(0x0008)	/* Application Subsystem Interrupt Control/Status Register */
30 #define CKENA			(0x000C)	/* A Clock Enable Register */
31 #define CKENB			(0x0010)	/* B Clock Enable Register */
32 #define CKENC			(0x0024)	/* C Clock Enable Register */
33 #define AC97_DIV		(0x0014)	/* AC97 clock divisor value register */
34 
35 #define ACCR_XPDIS		(1 << 31)	/* Core PLL Output Disable */
36 #define ACCR_SPDIS		(1 << 30)	/* System PLL Output Disable */
37 #define ACCR_D0CS		(1 << 26)	/* D0 Mode Clock Select */
38 #define ACCR_PCCE		(1 << 11)	/* Power Mode Change Clock Enable */
39 #define ACCR_DDR_D0CS		(1 << 7)	/* DDR SDRAM clock frequency in D0CS (PXA31x only) */
40 
41 #define ACCR_SMCFS_MASK		(0x7 << 23)	/* Static Memory Controller Frequency Select */
42 #define ACCR_SFLFS_MASK		(0x3 << 18)	/* Frequency Select for Internal Memory Controller */
43 #define ACCR_XSPCLK_MASK	(0x3 << 16)	/* Core Frequency during Frequency Change */
44 #define ACCR_HSS_MASK		(0x3 << 14)	/* System Bus-Clock Frequency Select */
45 #define ACCR_DMCFS_MASK		(0x3 << 12)	/* Dynamic Memory Controller Clock Frequency Select */
46 #define ACCR_XN_MASK		(0x7 << 8)	/* Core PLL Turbo-Mode-to-Run-Mode Ratio */
47 #define ACCR_XL_MASK		(0x1f)		/* Core PLL Run-Mode-to-Oscillator Ratio */
48 
49 #define ACCR_SMCFS(x)		(((x) & 0x7) << 23)
50 #define ACCR_SFLFS(x)		(((x) & 0x3) << 18)
51 #define ACCR_XSPCLK(x)		(((x) & 0x3) << 16)
52 #define ACCR_HSS(x)		(((x) & 0x3) << 14)
53 #define ACCR_DMCFS(x)		(((x) & 0x3) << 12)
54 #define ACCR_XN(x)		(((x) & 0x7) << 8)
55 #define ACCR_XL(x)		((x) & 0x1f)
56 
57 /*
58  * Clock Enable Bit
59  */
60 #define CKEN_LCD	1	/* < LCD Clock Enable */
61 #define CKEN_USBH	2	/* < USB host clock enable */
62 #define CKEN_CAMERA	3	/* < Camera interface clock enable */
63 #define CKEN_NAND	4	/* < NAND Flash Controller Clock Enable */
64 #define CKEN_USB2	6	/* < USB 2.0 client clock enable. */
65 #define CKEN_DMC	8	/* < Dynamic Memory Controller clock enable */
66 #define CKEN_SMC	9	/* < Static Memory Controller clock enable */
67 #define CKEN_ISC	10	/* < Internal SRAM Controller clock enable */
68 #define CKEN_BOOT	11	/* < Boot rom clock enable */
69 #define CKEN_MMC1	12	/* < MMC1 Clock enable */
70 #define CKEN_MMC2	13	/* < MMC2 clock enable */
71 #define CKEN_KEYPAD	14	/* < Keypand Controller Clock Enable */
72 #define CKEN_CIR	15	/* < Consumer IR Clock Enable */
73 #define CKEN_USIM0	17	/* < USIM[0] Clock Enable */
74 #define CKEN_USIM1	18	/* < USIM[1] Clock Enable */
75 #define CKEN_TPM	19	/* < TPM clock enable */
76 #define CKEN_UDC	20	/* < UDC clock enable */
77 #define CKEN_BTUART	21	/* < BTUART clock enable */
78 #define CKEN_FFUART	22	/* < FFUART clock enable */
79 #define CKEN_STUART	23	/* < STUART clock enable */
80 #define CKEN_AC97	24	/* < AC97 clock enable */
81 #define CKEN_TOUCH	25	/* < Touch screen Interface Clock Enable */
82 #define CKEN_SSP1	26	/* < SSP1 clock enable */
83 #define CKEN_SSP2	27	/* < SSP2 clock enable */
84 #define CKEN_SSP3	28	/* < SSP3 clock enable */
85 #define CKEN_SSP4	29	/* < SSP4 clock enable */
86 #define CKEN_MSL0	30	/* < MSL0 clock enable */
87 #define CKEN_PWM0	32	/* < PWM[0] clock enable */
88 #define CKEN_PWM1	33	/* < PWM[1] clock enable */
89 #define CKEN_I2C	36	/* < I2C clock enable */
90 #define CKEN_INTC	38	/* < Interrupt controller clock enable */
91 #define CKEN_GPIO	39	/* < GPIO clock enable */
92 #define CKEN_1WIRE	40	/* < 1-wire clock enable */
93 #define CKEN_HSIO2	41	/* < HSIO2 clock enable */
94 #define CKEN_MINI_IM	48	/* < Mini-IM */
95 #define CKEN_MINI_LCD	49	/* < Mini LCD */
96 
97 #define CKEN_MMC3	5	/* < MMC3 Clock Enable */
98 #define CKEN_MVED	43	/* < MVED clock enable */
99 
100 /* Note: GCU clock enable bit differs on PXA300/PXA310 and PXA320 */
101 #define CKEN_PXA300_GCU		42	/* Graphics controller clock enable */
102 #define CKEN_PXA320_GCU		7	/* Graphics controller clock enable */
103 
104 
105 enum {
106 	PXA_CORE_60Mhz = 0,
107 	PXA_CORE_RUN,
108 	PXA_CORE_TURBO,
109 };
110 
111 enum {
112 	PXA_BUS_60Mhz = 0,
113 	PXA_BUS_HSS,
114 };
115 
116 /* crystal frequency to HSIO bus frequency multiplier (HSS) */
117 static unsigned char hss_mult[4] = { 8, 12, 16, 24 };
118 
119 /* crystal frequency to static memory controller multiplier (SMCFS) */
120 static unsigned int smcfs_mult[8] = { 6, 0, 8, 0, 0, 16, };
121 static const char * const get_freq_khz[] = {
122 	"core", "ring_osc_60mhz", "run", "cpll", "system_bus"
123 };
124 
125 static void __iomem *clk_regs;
126 
127 /*
128  * Get the clock frequency as reflected by ACSR and the turbo flag.
129  * We assume these values have been applied via a fcs.
130  * If info is not 0 we also display the current settings.
131  */
pxa3xx_get_clk_frequency_khz(int info)132 unsigned int pxa3xx_get_clk_frequency_khz(int info)
133 {
134 	struct clk *clk;
135 	unsigned long clks[5];
136 	int i;
137 
138 	for (i = 0; i < 5; i++) {
139 		clk = clk_get(NULL, get_freq_khz[i]);
140 		if (IS_ERR(clk)) {
141 			clks[i] = 0;
142 		} else {
143 			clks[i] = clk_get_rate(clk);
144 			clk_put(clk);
145 		}
146 	}
147 	if (info) {
148 		pr_info("RO Mode clock: %ld.%02ldMHz\n",
149 			clks[1] / 1000000, (clks[0] % 1000000) / 10000);
150 		pr_info("Run Mode clock: %ld.%02ldMHz\n",
151 			clks[2] / 1000000, (clks[1] % 1000000) / 10000);
152 		pr_info("Turbo Mode clock: %ld.%02ldMHz\n",
153 			clks[3] / 1000000, (clks[2] % 1000000) / 10000);
154 		pr_info("System bus clock: %ld.%02ldMHz\n",
155 			clks[4] / 1000000, (clks[4] % 1000000) / 10000);
156 	}
157 	return (unsigned int)clks[0] / KHz;
158 }
159 
pxa3xx_clk_update_accr(u32 disable,u32 enable,u32 xclkcfg,u32 mask)160 void pxa3xx_clk_update_accr(u32 disable, u32 enable, u32 xclkcfg, u32 mask)
161 {
162 	u32 accr = readl(clk_regs + ACCR);
163 
164 	accr &= ~disable;
165 	accr |= enable;
166 
167 	writel(accr, clk_regs + ACCR);
168 	if (xclkcfg)
169 		__asm__("mcr p14, 0, %0, c6, c0, 0\n" : : "r"(xclkcfg));
170 
171 	while ((readl(clk_regs + ACSR) & mask) != (accr & mask))
172 		cpu_relax();
173 }
174 
clk_pxa3xx_ac97_get_rate(struct clk_hw * hw,unsigned long parent_rate)175 static unsigned long clk_pxa3xx_ac97_get_rate(struct clk_hw *hw,
176 					     unsigned long parent_rate)
177 {
178 	unsigned long ac97_div, rate;
179 
180 	ac97_div = readl(clk_regs + AC97_DIV);
181 
182 	/* This may loose precision for some rates but won't for the
183 	 * standard 24.576MHz.
184 	 */
185 	rate = parent_rate / 2;
186 	rate /= ((ac97_div >> 12) & 0x7fff);
187 	rate *= (ac97_div & 0xfff);
188 
189 	return rate;
190 }
191 PARENTS(clk_pxa3xx_ac97) = { "spll_624mhz" };
192 RATE_RO_OPS(clk_pxa3xx_ac97, "ac97");
193 
clk_pxa3xx_smemc_get_rate(struct clk_hw * hw,unsigned long parent_rate)194 static unsigned long clk_pxa3xx_smemc_get_rate(struct clk_hw *hw,
195 					      unsigned long parent_rate)
196 {
197 	unsigned long acsr = readl(clk_regs + ACSR);
198 
199 	return (parent_rate / 48)  * smcfs_mult[(acsr >> 23) & 0x7] /
200 		pxa3xx_smemc_get_memclkdiv();
201 
202 }
203 PARENTS(clk_pxa3xx_smemc) = { "spll_624mhz" };
204 RATE_RO_OPS(clk_pxa3xx_smemc, "smemc");
205 
pxa3xx_is_ring_osc_forced(void)206 static bool pxa3xx_is_ring_osc_forced(void)
207 {
208 	unsigned long acsr = readl(clk_regs + ACSR);
209 
210 	return acsr & ACCR_D0CS;
211 }
212 
213 PARENTS(pxa3xx_pbus) = { "ring_osc_60mhz", "spll_624mhz" };
214 PARENTS(pxa3xx_32Khz_bus) = { "osc_32_768khz", "osc_32_768khz" };
215 PARENTS(pxa3xx_13MHz_bus) = { "osc_13mhz", "osc_13mhz" };
216 PARENTS(pxa3xx_ac97_bus) = { "ring_osc_60mhz", "ac97" };
217 PARENTS(pxa3xx_sbus) = { "ring_osc_60mhz", "system_bus" };
218 PARENTS(pxa3xx_smemcbus) = { "ring_osc_60mhz", "smemc" };
219 
220 #define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? CKENB : CKENA)
221 #define PXA3XX_CKEN(dev_id, con_id, parents, mult_lp, div_lp, mult_hp,	\
222 		    div_hp, bit, is_lp, flags)				\
223 	PXA_CKEN(dev_id, con_id, bit, parents, mult_lp, div_lp,		\
224 		 mult_hp, div_hp, is_lp,  CKEN_AB(bit),			\
225 		 (CKEN_ ## bit % 32), flags)
226 #define PXA3XX_PBUS_CKEN(dev_id, con_id, bit, mult_lp, div_lp,		\
227 			 mult_hp, div_hp, delay)			\
228 	PXA3XX_CKEN(dev_id, con_id, pxa3xx_pbus_parents, mult_lp,	\
229 		    div_lp, mult_hp, div_hp, bit, pxa3xx_is_ring_osc_forced, 0)
230 #define PXA3XX_CKEN_1RATE(dev_id, con_id, bit, parents)			\
231 	PXA_CKEN_1RATE(dev_id, con_id, bit, parents,			\
232 		       CKEN_AB(bit), (CKEN_ ## bit % 32), 0)
233 
234 static struct desc_clk_cken pxa3xx_clocks[] __initdata = {
235 	PXA3XX_PBUS_CKEN("pxa2xx-uart.0", NULL, FFUART, 1, 4, 1, 42, 1),
236 	PXA3XX_PBUS_CKEN("pxa2xx-uart.1", NULL, BTUART, 1, 4, 1, 42, 1),
237 	PXA3XX_PBUS_CKEN("pxa2xx-uart.2", NULL, STUART, 1, 4, 1, 42, 1),
238 	PXA3XX_PBUS_CKEN("pxa2xx-i2c.0", NULL, I2C, 2, 5, 1, 19, 0),
239 	PXA3XX_PBUS_CKEN("pxa27x-udc", NULL, UDC, 1, 4, 1, 13, 5),
240 	PXA3XX_PBUS_CKEN("pxa27x-ohci", NULL, USBH, 1, 4, 1, 13, 0),
241 	PXA3XX_PBUS_CKEN("pxa3xx-u2d", NULL, USB2, 1, 4, 1, 13, 0),
242 	PXA3XX_PBUS_CKEN("pxa27x-pwm.0", NULL, PWM0, 1, 6, 1, 48, 0),
243 	PXA3XX_PBUS_CKEN("pxa27x-pwm.1", NULL, PWM1, 1, 6, 1, 48, 0),
244 	PXA3XX_PBUS_CKEN("pxa2xx-mci.0", NULL, MMC1, 1, 4, 1, 24, 0),
245 	PXA3XX_PBUS_CKEN("pxa2xx-mci.1", NULL, MMC2, 1, 4, 1, 24, 0),
246 	PXA3XX_PBUS_CKEN("pxa2xx-mci.2", NULL, MMC3, 1, 4, 1, 24, 0),
247 
248 	PXA3XX_CKEN_1RATE("pxa27x-keypad", NULL, KEYPAD,
249 			  pxa3xx_32Khz_bus_parents),
250 	PXA3XX_CKEN_1RATE("pxa3xx-ssp.0", NULL, SSP1, pxa3xx_13MHz_bus_parents),
251 	PXA3XX_CKEN_1RATE("pxa3xx-ssp.1", NULL, SSP2, pxa3xx_13MHz_bus_parents),
252 	PXA3XX_CKEN_1RATE("pxa3xx-ssp.2", NULL, SSP3, pxa3xx_13MHz_bus_parents),
253 	PXA3XX_CKEN_1RATE("pxa3xx-ssp.3", NULL, SSP4, pxa3xx_13MHz_bus_parents),
254 
255 	PXA3XX_CKEN(NULL, "AC97CLK", pxa3xx_ac97_bus_parents, 1, 4, 1, 1, AC97,
256 		    pxa3xx_is_ring_osc_forced, 0),
257 	PXA3XX_CKEN(NULL, "CAMCLK", pxa3xx_sbus_parents, 1, 2, 1, 1, CAMERA,
258 		    pxa3xx_is_ring_osc_forced, 0),
259 	PXA3XX_CKEN("pxa2xx-fb", NULL, pxa3xx_sbus_parents, 1, 1, 1, 1, LCD,
260 		    pxa3xx_is_ring_osc_forced, 0),
261 	PXA3XX_CKEN("pxa2xx-pcmcia", NULL, pxa3xx_smemcbus_parents, 1, 4,
262 		    1, 1, SMC, pxa3xx_is_ring_osc_forced, CLK_IGNORE_UNUSED),
263 };
264 
265 static struct desc_clk_cken pxa300_310_clocks[] __initdata = {
266 
267 	PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA300_GCU, 1, 1, 1, 1, 0),
268 	PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 4, 0),
269 	PXA3XX_CKEN_1RATE("pxa3xx-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents),
270 };
271 
272 static struct desc_clk_cken pxa320_clocks[] __initdata = {
273 	PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 6, 0),
274 	PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA320_GCU, 1, 1, 1, 1, 0),
275 	PXA3XX_CKEN_1RATE("pxa3xx-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents),
276 };
277 
278 static struct desc_clk_cken pxa93x_clocks[] __initdata = {
279 
280 	PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA300_GCU, 1, 1, 1, 1, 0),
281 	PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 4, 0),
282 	PXA3XX_CKEN_1RATE("pxa93x-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents),
283 };
284 
clk_pxa3xx_system_bus_get_rate(struct clk_hw * hw,unsigned long parent_rate)285 static unsigned long clk_pxa3xx_system_bus_get_rate(struct clk_hw *hw,
286 					    unsigned long parent_rate)
287 {
288 	unsigned long acsr = readl(clk_regs + ACSR);
289 	unsigned int hss = (acsr >> 14) & 0x3;
290 
291 	if (pxa3xx_is_ring_osc_forced())
292 		return parent_rate;
293 	return parent_rate / 48 * hss_mult[hss];
294 }
295 
clk_pxa3xx_system_bus_get_parent(struct clk_hw * hw)296 static u8 clk_pxa3xx_system_bus_get_parent(struct clk_hw *hw)
297 {
298 	if (pxa3xx_is_ring_osc_forced())
299 		return PXA_BUS_60Mhz;
300 	else
301 		return PXA_BUS_HSS;
302 }
303 
304 PARENTS(clk_pxa3xx_system_bus) = { "ring_osc_60mhz", "spll_624mhz" };
305 MUX_RO_RATE_RO_OPS(clk_pxa3xx_system_bus, "system_bus");
306 
clk_pxa3xx_core_get_rate(struct clk_hw * hw,unsigned long parent_rate)307 static unsigned long clk_pxa3xx_core_get_rate(struct clk_hw *hw,
308 					      unsigned long parent_rate)
309 {
310 	return parent_rate;
311 }
312 
clk_pxa3xx_core_get_parent(struct clk_hw * hw)313 static u8 clk_pxa3xx_core_get_parent(struct clk_hw *hw)
314 {
315 	unsigned long xclkcfg;
316 	unsigned int t;
317 
318 	if (pxa3xx_is_ring_osc_forced())
319 		return PXA_CORE_60Mhz;
320 
321 	/* Read XCLKCFG register turbo bit */
322 	__asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg));
323 	t = xclkcfg & 0x1;
324 
325 	if (t)
326 		return PXA_CORE_TURBO;
327 	return PXA_CORE_RUN;
328 }
329 PARENTS(clk_pxa3xx_core) = { "ring_osc_60mhz", "run", "cpll" };
330 MUX_RO_RATE_RO_OPS(clk_pxa3xx_core, "core");
331 
clk_pxa3xx_run_get_rate(struct clk_hw * hw,unsigned long parent_rate)332 static unsigned long clk_pxa3xx_run_get_rate(struct clk_hw *hw,
333 					     unsigned long parent_rate)
334 {
335 	unsigned long acsr = readl(clk_regs + ACSR);
336 	unsigned int xn = (acsr & ACCR_XN_MASK) >> 8;
337 	unsigned int t, xclkcfg;
338 
339 	/* Read XCLKCFG register turbo bit */
340 	__asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg));
341 	t = xclkcfg & 0x1;
342 
343 	return t ? (parent_rate / xn) * 2 : parent_rate;
344 }
345 PARENTS(clk_pxa3xx_run) = { "cpll" };
346 RATE_RO_OPS(clk_pxa3xx_run, "run");
347 
clk_pxa3xx_cpll_get_rate(struct clk_hw * hw,unsigned long parent_rate)348 static unsigned long clk_pxa3xx_cpll_get_rate(struct clk_hw *hw,
349 	unsigned long parent_rate)
350 {
351 	unsigned long acsr = readl(clk_regs + ACSR);
352 	unsigned int xn = (acsr & ACCR_XN_MASK) >> 8;
353 	unsigned int xl = acsr & ACCR_XL_MASK;
354 	unsigned int t, xclkcfg;
355 
356 	/* Read XCLKCFG register turbo bit */
357 	__asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg));
358 	t = xclkcfg & 0x1;
359 
360 	pr_info("RJK: parent_rate=%lu, xl=%u, xn=%u\n", parent_rate, xl, xn);
361 	return t ? parent_rate * xl * xn : parent_rate * xl;
362 }
363 PARENTS(clk_pxa3xx_cpll) = { "osc_13mhz" };
364 RATE_RO_OPS(clk_pxa3xx_cpll, "cpll");
365 
pxa3xx_register_core(void)366 static void __init pxa3xx_register_core(void)
367 {
368 	clk_register_clk_pxa3xx_cpll();
369 	clk_register_clk_pxa3xx_run();
370 
371 	clkdev_pxa_register(CLK_CORE, "core", NULL,
372 			    clk_register_clk_pxa3xx_core());
373 }
374 
pxa3xx_register_plls(void)375 static void __init pxa3xx_register_plls(void)
376 {
377 	clk_register_fixed_rate(NULL, "osc_13mhz", NULL,
378 				CLK_GET_RATE_NOCACHE,
379 				13 * MHz);
380 	clkdev_pxa_register(CLK_OSC32k768, "osc_32_768khz", NULL,
381 			    clk_register_fixed_rate(NULL, "osc_32_768khz", NULL,
382 						    CLK_GET_RATE_NOCACHE,
383 						    32768));
384 	clk_register_fixed_rate(NULL, "ring_osc_120mhz", NULL,
385 				CLK_GET_RATE_NOCACHE,
386 				120 * MHz);
387 	clk_register_fixed_rate(NULL, "clk_dummy", NULL, 0, 0);
388 	clk_register_fixed_factor(NULL, "spll_624mhz", "osc_13mhz", 0, 48, 1);
389 	clk_register_fixed_factor(NULL, "ring_osc_60mhz", "ring_osc_120mhz",
390 				  0, 1, 2);
391 }
392 
393 #define DUMMY_CLK(_con_id, _dev_id, _parent) \
394 	{ .con_id = _con_id, .dev_id = _dev_id, .parent = _parent }
395 struct dummy_clk {
396 	const char *con_id;
397 	const char *dev_id;
398 	const char *parent;
399 };
400 static struct dummy_clk dummy_clks[] __initdata = {
401 	DUMMY_CLK(NULL, "pxa93x-gpio", "osc_13mhz"),
402 	DUMMY_CLK(NULL, "sa1100-rtc", "osc_32_768khz"),
403 	DUMMY_CLK("UARTCLK", "pxa2xx-ir", "STUART"),
404 	DUMMY_CLK(NULL, "pxa3xx-pwri2c.1", "osc_13mhz"),
405 };
406 
pxa3xx_dummy_clocks_init(void)407 static void __init pxa3xx_dummy_clocks_init(void)
408 {
409 	struct clk *clk;
410 	struct dummy_clk *d;
411 	const char *name;
412 	int i;
413 
414 	for (i = 0; i < ARRAY_SIZE(dummy_clks); i++) {
415 		d = &dummy_clks[i];
416 		name = d->dev_id ? d->dev_id : d->con_id;
417 		clk = clk_register_fixed_factor(NULL, name, d->parent, 0, 1, 1);
418 		clk_register_clkdev(clk, d->con_id, d->dev_id);
419 	}
420 }
421 
pxa3xx_base_clocks_init(void __iomem * oscc_reg)422 static void __init pxa3xx_base_clocks_init(void __iomem *oscc_reg)
423 {
424 	struct clk *clk;
425 
426 	pxa3xx_register_plls();
427 	pxa3xx_register_core();
428 	clk_register_clk_pxa3xx_system_bus();
429 	clk_register_clk_pxa3xx_ac97();
430 	clk_register_clk_pxa3xx_smemc();
431 	clk = clk_register_gate(NULL, "CLK_POUT",
432 				"osc_13mhz", 0, oscc_reg, 11, 0, NULL);
433 	clk_register_clkdev(clk, "CLK_POUT", NULL);
434 	clkdev_pxa_register(CLK_OSTIMER, "OSTIMER0", NULL,
435 			    clk_register_fixed_factor(NULL, "os-timer0",
436 						      "osc_13mhz", 0, 1, 4));
437 }
438 
pxa3xx_clocks_init(void __iomem * regs,void __iomem * oscc_reg)439 int __init pxa3xx_clocks_init(void __iomem *regs, void __iomem *oscc_reg)
440 {
441 	int ret;
442 
443 	clk_regs = regs;
444 	pxa3xx_base_clocks_init(oscc_reg);
445 	pxa3xx_dummy_clocks_init();
446 	ret = clk_pxa_cken_init(pxa3xx_clocks, ARRAY_SIZE(pxa3xx_clocks), regs);
447 	if (ret)
448 		return ret;
449 	if (cpu_is_pxa320())
450 		return clk_pxa_cken_init(pxa320_clocks,
451 					 ARRAY_SIZE(pxa320_clocks), regs);
452 	if (cpu_is_pxa300() || cpu_is_pxa310())
453 		return clk_pxa_cken_init(pxa300_310_clocks,
454 					 ARRAY_SIZE(pxa300_310_clocks), regs);
455 	return clk_pxa_cken_init(pxa93x_clocks, ARRAY_SIZE(pxa93x_clocks), regs);
456 }
457 
pxa3xx_dt_clocks_init(struct device_node * np)458 static void __init pxa3xx_dt_clocks_init(struct device_node *np)
459 {
460 	pxa3xx_clocks_init(ioremap(0x41340000, 0x10), ioremap(0x41350000, 4));
461 	clk_pxa_dt_common_init(np);
462 }
463 CLK_OF_DECLARE(pxa_clks, "marvell,pxa300-clocks", pxa3xx_dt_clocks_init);
464