summaryrefslogtreecommitdiffstats
path: root/arch/arm/include/asm/arch-davinci/hardware.h
blob: 21b20763a88defc10a83aa19c9ac5a10d72b4e20 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
/*
 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
 *
 * Based on:
 *
 * -------------------------------------------------------------------------
 *
 *  linux/include/asm-arm/arch-davinci/hardware.h
 *
 *  Copyright (C) 2006 Texas Instruments.
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H

#include <config.h>
#include <asm/sizes.h>

#define	REG(addr)	(*(volatile unsigned int *)(addr))
#define REG_P(addr)	((volatile unsigned int *)(addr))

typedef volatile unsigned int	dv_reg;
typedef volatile unsigned int *	dv_reg_p;

/*
 * Base register addresses
 *
 * NOTE:  some of these DM6446-specific addresses DO NOT WORK
 * on other DaVinci chips.  Double check them before you try
 * using the addresses ... or PSC module identifiers, etc.
 */
#ifndef CONFIG_SOC_DA8XX

#define DAVINCI_DMA_3PCC_BASE			(0x01c00000)
#define DAVINCI_DMA_3PTC0_BASE			(0x01c10000)
#define DAVINCI_DMA_3PTC1_BASE			(0x01c10400)
#define DAVINCI_UART0_BASE			(0x01c20000)
#define DAVINCI_UART1_BASE			(0x01c20400)
#define DAVINCI_I2C_BASE			(0x01c21000)
#define DAVINCI_TIMER0_BASE			(0x01c21400)
#define DAVINCI_TIMER1_BASE			(0x01c21800)
#define DAVINCI_WDOG_BASE			(0x01c21c00)
#define DAVINCI_PWM0_BASE			(0x01c22000)
#define DAVINCI_PWM1_BASE			(0x01c22400)
#define DAVINCI_PWM2_BASE			(0x01c22800)
#define DAVINCI_SYSTEM_MODULE_BASE		(0x01c40000)
#define DAVINCI_PLL_CNTRL0_BASE			(0x01c40800)
#define DAVINCI_PLL_CNTRL1_BASE			(0x01c40c00)
#define DAVINCI_PWR_SLEEP_CNTRL_BASE		(0x01c41000)
#define DAVINCI_ARM_INTC_BASE			(0x01c48000)
#define DAVINCI_USB_OTG_BASE			(0x01c64000)
#define DAVINCI_CFC_ATA_BASE			(0x01c66000)
#define DAVINCI_SPI_BASE			(0x01c66800)
#define DAVINCI_GPIO_BASE			(0x01c67000)
#define DAVINCI_VPSS_REGS_BASE			(0x01c70000)
#if !defined(CONFIG_SOC_DM646X)
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	(0x02000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE	(0x04000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE	(0x06000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE	(0x08000000)
#endif
#define DAVINCI_DDR_BASE			(0x80000000)

#ifdef CONFIG_SOC_DM644X
#define DAVINCI_UART2_BASE			0x01c20800
#define DAVINCI_UHPI_BASE			0x01c67800
#define DAVINCI_EMAC_CNTRL_REGS_BASE		0x01c80000
#define DAVINCI_EMAC_WRAPPER_CNTRL_REGS_BASE	0x01c81000
#define DAVINCI_EMAC_WRAPPER_RAM_BASE		0x01c82000
#define DAVINCI_MDIO_CNTRL_REGS_BASE		0x01c84000
#define DAVINCI_IMCOP_BASE			0x01cc0000
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x01e00000
#define DAVINCI_VLYNQ_BASE			0x01e01000
#define DAVINCI_ASP_BASE			0x01e02000
#define DAVINCI_MMC_SD_BASE			0x01e10000
#define DAVINCI_MS_BASE				0x01e20000
#define DAVINCI_VLYNQ_REMOTE_BASE		0x0c000000

#elif defined(CONFIG_SOC_DM355)
#define DAVINCI_MMC_SD1_BASE			0x01e00000
#define DAVINCI_ASP0_BASE			0x01e02000
#define DAVINCI_ASP1_BASE			0x01e04000
#define DAVINCI_UART2_BASE			0x01e06000
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x01e10000
#define DAVINCI_MMC_SD0_BASE			0x01e11000

#elif defined(CONFIG_SOC_DM365)
#define DAVINCI_MMC_SD1_BASE			0x01d00000
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x01d10000
#define DAVINCI_MMC_SD0_BASE			0x01d11000

#elif defined(CONFIG_SOC_DM646X)
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x20008000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x42000000
#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE	0x44000000
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE	0x46000000
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE	0x48000000

#endif

#else /* CONFIG_SOC_DA8XX */

#define DAVINCI_UART0_BASE			0x01c42000
#define DAVINCI_UART1_BASE			0x01d0c000
#define DAVINCI_UART2_BASE			0x01d0d000
#define DAVINCI_I2C0_BASE			0x01c22000
#define DAVINCI_I2C1_BASE			0x01e28000
#define DAVINCI_TIMER0_BASE			0x01c20000
#define DAVINCI_TIMER1_BASE			0x01c21000
#define DAVINCI_WDOG_BASE			0x01c21000
#define DAVINCI_PLL_CNTRL0_BASE			0x01c11000
#define DAVINCI_PSC0_BASE			0x01c10000
#define DAVINCI_PSC1_BASE			0x01e27000
#define DAVINCI_SPI0_BASE			0x01c41000
#define DAVINCI_USB_OTG_BASE			0x01e00000
#define DAVINCI_SPI1_BASE			(cpu_is_da830() ? \
						0x01e12000 : 0x01f0e000)
#define DAVINCI_GPIO_BASE			0x01e26000
#define DAVINCI_EMAC_CNTRL_REGS_BASE		0x01e23000
#define DAVINCI_EMAC_WRAPPER_CNTRL_REGS_BASE	0x01e22000
#define DAVINCI_EMAC_WRAPPER_RAM_BASE		0x01e20000
#define DAVINCI_MDIO_CNTRL_REGS_BASE		0x01e24000
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x68000000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x40000000
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE	0x60000000
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE	0x62000000
#define DAVINCI_ASYNC_EMIF_DATA_CE4_BASE	0x64000000
#define DAVINCI_ASYNC_EMIF_DATA_CE5_BASE	0x66000000
#define DAVINCI_DDR_EMIF_CTRL_BASE		0xb0000000
#define DAVINCI_DDR_EMIF_DATA_BASE		0xc0000000
#define DAVINCI_INTC_BASE			0xfffee000
#define DAVINCI_BOOTCFG_BASE			0x01c14000
#define JTAG_ID_REG                            (DAVINCI_BOOTCFG_BASE + 0x18)

#endif /* CONFIG_SOC_DA8XX */

/* Power and Sleep Controller (PSC) Domains */
#define DAVINCI_GPSC_ARMDOMAIN		0
#define DAVINCI_GPSC_DSPDOMAIN		1

#ifndef CONFIG_SOC_DA8XX

#define DAVINCI_LPSC_VPSSMSTR		0
#define DAVINCI_LPSC_VPSSSLV		1
#define DAVINCI_LPSC_TPCC		2
#define DAVINCI_LPSC_TPTC0		3
#define DAVINCI_LPSC_TPTC1		4
#define DAVINCI_LPSC_EMAC		5
#define DAVINCI_LPSC_EMAC_WRAPPER	6
#define DAVINCI_LPSC_MDIO		7
#define DAVINCI_LPSC_IEEE1394		8
#define DAVINCI_LPSC_USB		9
#define DAVINCI_LPSC_ATA		10
#define DAVINCI_LPSC_VLYNQ		11
#define DAVINCI_LPSC_UHPI		12
#define DAVINCI_LPSC_DDR_EMIF		13
#define DAVINCI_LPSC_AEMIF		14
#define DAVINCI_LPSC_MMC_SD		15
#define DAVINCI_LPSC_MEMSTICK		16
#define DAVINCI_LPSC_McBSP		17
#define DAVINCI_LPSC_I2C		18
#define DAVINCI_LPSC_UART0		19
#define DAVINCI_LPSC_UART1		20
#define DAVINCI_LPSC_UART2		21
#define DAVINCI_LPSC_SPI		22
#define DAVINCI_LPSC_PWM0		23
#define DAVINCI_LPSC_PWM1		24
#define DAVINCI_LPSC_PWM2		25
#define DAVINCI_LPSC_GPIO		26
#define DAVINCI_LPSC_TIMER0		27
#define DAVINCI_LPSC_TIMER1		28
#define DAVINCI_LPSC_TIMER2		29
#define DAVINCI_LPSC_SYSTEM_SUBSYS	30
#define DAVINCI_LPSC_ARM		31
#define DAVINCI_LPSC_SCR2		32
#define DAVINCI_LPSC_SCR3		33
#define DAVINCI_LPSC_SCR4		34
#define DAVINCI_LPSC_CROSSBAR		35
#define DAVINCI_LPSC_CFG27		36
#define DAVINCI_LPSC_CFG3		37
#define DAVINCI_LPSC_CFG5		38
#define DAVINCI_LPSC_GEM		39
#define DAVINCI_LPSC_IMCOP		40

#define DAVINCI_DM646X_LPSC_EMAC	14
#define DAVINCI_DM646X_LPSC_UART0	26
#define DAVINCI_DM646X_LPSC_I2C		31

#else /* CONFIG_SOC_DA8XX */

enum davinci_lpsc_ids {
	DAVINCI_LPSC_TPCC = 0,
	DAVINCI_LPSC_TPTC0,
	DAVINCI_LPSC_TPTC1,
	DAVINCI_LPSC_AEMIF,
	DAVINCI_LPSC_SPI0,
	DAVINCI_LPSC_MMC_SD,
	DAVINCI_LPSC_AINTC,
	DAVINCI_LPSC_ARM_RAM_ROM,
	DAVINCI_LPSC_SECCTL_KEYMGR,
	DAVINCI_LPSC_UART0,
	DAVINCI_LPSC_SCR0,
	DAVINCI_LPSC_SCR1,
	DAVINCI_LPSC_SCR2,
	DAVINCI_LPSC_DMAX,
	DAVINCI_LPSC_ARM,
	DAVINCI_LPSC_GEM,
	/* for LPSCs in PSC1, offset from 32 for differentiation */
	DAVINCI_LPSC_PSC1_BASE = 32,
	DAVINCI_LPSC_USB11,
	DAVINCI_LPSC_USB20,
	DAVINCI_LPSC_GPIO,
	DAVINCI_LPSC_UHPI,
	DAVINCI_LPSC_EMAC,
	DAVINCI_LPSC_DDR_EMIF,
	DAVINCI_LPSC_McASP0,
	DAVINCI_LPSC_McASP1,
	DAVINCI_LPSC_McASP2,
	DAVINCI_LPSC_SPI1,
	DAVINCI_LPSC_I2C1,
	DAVINCI_LPSC_UART1,
	DAVINCI_LPSC_UART2,
	DAVINCI_LPSC_LCDC,
	DAVINCI_LPSC_ePWM,
	DAVINCI_LPSC_eCAP,
	DAVINCI_LPSC_eQEP,
	DAVINCI_LPSC_SCR_P0,
	DAVINCI_LPSC_SCR_P1,
	DAVINCI_LPSC_CR_P3,
	DAVINCI_LPSC_L3_CBA_RAM
};

#endif /* CONFIG_SOC_DA8XX */

void lpsc_on(unsigned int id);
void dsp_on(void);

void davinci_enable_uart0(void);
void davinci_enable_emac(void);
void davinci_enable_i2c(void);
void davinci_errata_workarounds(void);

#ifndef CONFIG_SOC_DA8XX

/* Some PSC defines */
#define PSC_CHP_SHRTSW			(0x01c40038)
#define PSC_GBLCTL			(0x01c41010)
#define PSC_EPCPR			(0x01c41070)
#define PSC_EPCCR			(0x01c41078)
#define PSC_PTCMD			(0x01c41120)
#define PSC_PTSTAT			(0x01c41128)
#define PSC_PDSTAT			(0x01c41200)
#define PSC_PDSTAT1			(0x01c41204)
#define PSC_PDCTL			(0x01c41300)
#define PSC_PDCTL1			(0x01c41304)

#define PSC_MDCTL_BASE			(0x01c41a00)
#define PSC_MDSTAT_BASE			(0x01c41800)

#define VDD3P3V_PWDN			(0x01c40048)
#define UART0_PWREMU_MGMT		(0x01c20030)

#define PSC_SILVER_BULLET		(0x01c41a20)

#else /* CONFIG_SOC_DA8XX */

#define PSC_PSC0_MODULE_ID_CNT		16
#define PSC_PSC1_MODULE_ID_CNT		32

struct davinci_psc_regs {
	dv_reg	revid;
	dv_reg	rsvd0[71];
	dv_reg	ptcmd;
	dv_reg	rsvd1;
	dv_reg	ptstat;
	dv_reg	rsvd2[437];
	union {
		struct {
			dv_reg	mdstat[PSC_PSC0_MODULE_ID_CNT];
			dv_reg	rsvd3[112];
			dv_reg	mdctl[PSC_PSC0_MODULE_ID_CNT];
		} psc0;
		struct {
			dv_reg	mdstat[PSC_PSC1_MODULE_ID_CNT];
			dv_reg	rsvd3[96];
			dv_reg	mdctl[PSC_PSC1_MODULE_ID_CNT];
		} psc1;
	};
};

#define davinci_psc0_regs ((struct davinci_psc_regs *)DAVINCI_PSC0_BASE)
#define davinci_psc1_regs ((struct davinci_psc_regs *)DAVINCI_PSC1_BASE)

#endif /* CONFIG_SOC_DA8XX */

#ifndef CONFIG_SOC_DA8XX

/* Miscellania... */
#define VBPR				(0x20000020)

/* NOTE:  system control modules are *highly* chip-specific, both
 * as to register content (e.g. for muxing) and which registers exist.
 */
#define PINMUX0				0x01c40000
#define PINMUX1				0x01c40004
#define PINMUX2				0x01c40008
#define PINMUX3				0x01c4000c
#define PINMUX4				0x01c40010

#else /* CONFIG_SOC_DA8XX */

struct davinci_pllc_regs {
	dv_reg	revid;
	dv_reg	rsvd1[56];
	dv_reg	rstype;
	dv_reg	rsvd2[6];
	dv_reg	pllctl;
	dv_reg	ocsel;
	dv_reg	rsvd3[2];
	dv_reg	pllm;
	dv_reg	prediv;
	dv_reg	plldiv1;
	dv_reg	plldiv2;
	dv_reg	plldiv3;
	dv_reg	oscdiv;
	dv_reg	postdiv;
	dv_reg	rsvd4[3];
	dv_reg	pllcmd;
	dv_reg	pllstat;
	dv_reg	alnctl;
	dv_reg	dchange;
	dv_reg	cken;
	dv_reg	ckstat;
	dv_reg	systat;
	dv_reg	rsvd5[3];
	dv_reg	plldiv4;
	dv_reg	plldiv5;
	dv_reg	plldiv6;
	dv_reg	plldiv7;
	dv_reg	rsvd6[32];
	dv_reg	emucnt0;
	dv_reg	emucnt1;
};

#define davinci_pllc_regs ((struct davinci_pllc_regs *)DAVINCI_PLL_CNTRL0_BASE)
#define DAVINCI_PLLC_DIV_MASK	0x1f

#define ASYNC3          get_async3_src()
#define PLL1_SYSCLK2		((1 << 16) | 0x2)
#define DAVINCI_SPI1_CLKID  (cpu_is_da830() ? 2 : ASYNC3)
/* Clock IDs */
enum davinci_clk_ids {
	DAVINCI_SPI0_CLKID = 2,
	DAVINCI_UART2_CLKID = 2,
	DAVINCI_MDIO_CLKID = 4,
	DAVINCI_ARM_CLKID = 6,
	DAVINCI_PLLM_CLKID = 0xff,
	DAVINCI_PLLC_CLKID = 0x100,
	DAVINCI_AUXCLK_CLKID = 0x101
};

int clk_get(enum davinci_clk_ids id);

/* Boot config */
struct davinci_syscfg_regs {
	dv_reg	revid;
	dv_reg	rsvd[71];
	dv_reg	pinmux[20];
	dv_reg	suspsrc;
	dv_reg	chipsig;
	dv_reg	chipsig_clr;
	dv_reg	cfgchip0;
	dv_reg	cfgchip1;
	dv_reg	cfgchip2;
	dv_reg	cfgchip3;
	dv_reg	cfgchip4;
};

#define davinci_syscfg_regs \
	((struct davinci_syscfg_regs *)DAVINCI_BOOTCFG_BASE)

/* Emulation suspend bits */
#define DAVINCI_SYSCFG_SUSPSRC_EMAC		(1 << 5)
#define DAVINCI_SYSCFG_SUSPSRC_I2C		(1 << 16)
#define DAVINCI_SYSCFG_SUSPSRC_SPI0		(1 << 21)
#define DAVINCI_SYSCFG_SUSPSRC_SPI1		(1 << 22)
#define DAVINCI_SYSCFG_SUSPSRC_UART2		(1 << 20)
#define DAVINCI_SYSCFG_SUSPSRC_TIMER0		(1 << 27)

/* Interrupt controller */
struct davinci_aintc_regs {
	dv_reg	revid;
	dv_reg	cr;
	dv_reg	dummy0[2];
	dv_reg	ger;
	dv_reg	dummy1[219];
	dv_reg	ecr1;
	dv_reg	ecr2;
	dv_reg	ecr3;
	dv_reg	dummy2[1117];
	dv_reg	hier;
};

#define davinci_aintc_regs ((struct davinci_aintc_regs *)DAVINCI_INTC_BASE)

struct davinci_uart_ctrl_regs {
	dv_reg	revid1;
	dv_reg	revid2;
	dv_reg	pwremu_mgmt;
	dv_reg	mdr;
};

#define DAVINCI_UART_CTRL_BASE 0x28
#define DAVINCI_UART0_CTRL_ADDR (DAVINCI_UART0_BASE + DAVINCI_UART_CTRL_BASE)
#define DAVINCI_UART1_CTRL_ADDR (DAVINCI_UART1_BASE + DAVINCI_UART_CTRL_BASE)
#define DAVINCI_UART2_CTRL_ADDR (DAVINCI_UART2_BASE + DAVINCI_UART_CTRL_BASE)

#define davinci_uart0_ctrl_regs \
	((struct davinci_uart_ctrl_regs *)DAVINCI_UART0_CTRL_ADDR)
#define davinci_uart1_ctrl_regs \
	((struct davinci_uart_ctrl_regs *)DAVINCI_UART1_CTRL_ADDR)
#define davinci_uart2_ctrl_regs \
	((struct davinci_uart_ctrl_regs *)DAVINCI_UART2_CTRL_ADDR)

/* UART PWREMU_MGMT definitions */
#define DAVINCI_UART_PWREMU_MGMT_FREE	(1 << 0)
#define DAVINCI_UART_PWREMU_MGMT_URRST	(1 << 13)
#define DAVINCI_UART_PWREMU_MGMT_UTRST	(1 << 14)

static inline int cpu_is_da830(void)
{
	unsigned int jtag_id	= REG(JTAG_ID_REG);
	unsigned short part_no	= (jtag_id >> 12) & 0xffff;

	return ((part_no == 0xb7df) ? 1 : 0);
}
static inline int cpu_is_da850(void)
{
	unsigned int jtag_id    = REG(JTAG_ID_REG);
	unsigned short part_no  = (jtag_id >> 12) & 0xffff;

	return ((part_no == 0xb7d1) ? 1 : 0);
}

static inline int get_async3_src(void)
{
	return (REG(&davinci_syscfg_regs->cfgchip3) & 0x10) ?
			PLL1_SYSCLK2 : 2;
}

#endif /* CONFIG_SOC_DA8XX */

#endif /* __ASM_ARCH_HARDWARE_H */