ti_prcm.h revision 239281 
1/*
2 * Copyright (c) 2010
3 *	Ben Gray <ben.r.gray@gmail.com>.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Ben Gray.
17 * 4. The name of the company nor the name of the author may be used to
18 *    endorse or promote products derived from this software without specific
19 *    prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY BEN GRAY ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL BEN GRAY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * $FreeBSD: head/sys/arm/ti/ti_prcm.h 239281 2012-08-15 06:31:32Z gonzo $
33 */
34
35
36/*
37 * Texas Instruments - OMAP3xxx series processors
38 *
39 * Reference:
40 *  OMAP35x Applications Processor
41 *   Technical Reference Manual
42 *  (omap35xx_techref.pdf)
43 */
44#ifndef _TI_PRCM_H_
45#define _TI_PRCM_H_
46
47typedef enum {
48
49	/* System clocks, typically you can only call ti_prcm_clk_get_source_freq()
50	 * on these clocks as they are enabled by default.
51	 */
52	SYS_CLK = 1,
53
54	/* The MPU (ARM) core clock */
55	MPU_CLK = 20,
56
57	/* MMC modules */
58	MMC0_CLK = 100,
59	MMC1_CLK,
60	MMC2_CLK,
61	MMC3_CLK,
62	MMC4_CLK,
63	MMC5_CLK,
64
65	/* I2C modules */
66	I2C0_CLK = 200,
67	I2C1_CLK,
68	I2C2_CLK,
69	I2C3_CLK,
70	I2C4_CLK,
71
72	/* USB module(s) */
73	USBTLL_CLK = 300,
74	USBHSHOST_CLK,
75	USBFSHOST_CLK,
76	USBP1_PHY_CLK,
77	USBP2_PHY_CLK,
78	USBP1_UTMI_CLK,
79	USBP2_UTMI_CLK,
80	USBP1_HSIC_CLK,
81	USBP2_HSIC_CLK,
82
83	/* UART modules */
84	UART1_CLK = 400,
85	UART2_CLK,
86	UART3_CLK,
87	UART4_CLK,
88
89	/* General purpose timer modules */
90	GPTIMER1_CLK = 500,
91	GPTIMER2_CLK,
92	GPTIMER3_CLK,
93	GPTIMER4_CLK,
94	GPTIMER5_CLK,
95	GPTIMER6_CLK,
96	GPTIMER7_CLK,
97	GPTIMER8_CLK,
98	GPTIMER9_CLK,
99	GPTIMER10_CLK,
100	GPTIMER11_CLK,
101	GPTIMER12_CLK,
102
103	/* McBSP module(s) */
104	MCBSP1_CLK = 600,
105	MCBSP2_CLK,
106	MCBSP3_CLK,
107	MCBSP4_CLK,
108	MCBSP5_CLK,
109
110	/* General purpose I/O modules */
111	GPIO0_CLK = 700,
112	GPIO1_CLK,
113	GPIO2_CLK,
114	GPIO3_CLK,
115	GPIO4_CLK,
116	GPIO5_CLK,
117	GPIO6_CLK,
118
119	/* sDMA module */
120	SDMA_CLK = 800,
121
122	/* DMTimer modules */
123	DMTIMER0_CLK = 900,
124	DMTIMER1_CLK,
125	DMTIMER2_CLK,
126	DMTIMER3_CLK,
127	DMTIMER4_CLK,
128	DMTIMER5_CLK,
129	DMTIMER6_CLK,
130	DMTIMER7_CLK,
131
132	/* CPSW modules */
133	CPSW_CLK = 1000,
134
135	/* Mentor USB modules */
136	MUSB0_CLK = 1100,
137
138	/* EDMA module */
139	EDMA_TPCC_CLK = 1200,
140	EDMA_TPTC0_CLK,
141	EDMA_TPTC1_CLK,
142	EDMA_TPTC2_CLK,
143
144	INVALID_CLK_IDENT
145
146} clk_ident_t;
147
148/*
149 *
150 */
151typedef enum {
152	SYSCLK_CLK,   /* System clock */
153	EXT_CLK,
154
155	F32KHZ_CLK,   /* 32KHz clock */
156	F48MHZ_CLK,   /* 48MHz clock */
157	F64MHZ_CLK,   /* 64MHz clock */
158	F96MHZ_CLK,   /* 96MHz clock */
159
160} clk_src_t;
161
162struct ti_clock_dev {
163	/* The profile of the timer */
164	clk_ident_t  id;
165
166	/* A bunch of callbacks associated with the clock device */
167	int (*clk_activate)(struct ti_clock_dev *clkdev);
168	int (*clk_deactivate)(struct ti_clock_dev *clkdev);
169	int (*clk_set_source)(struct ti_clock_dev *clkdev,
170	    clk_src_t clksrc);
171	int (*clk_accessible)(struct ti_clock_dev *clkdev);
172	int (*clk_get_source_freq)(struct ti_clock_dev *clkdev,
173	    unsigned int *freq);
174};
175
176int ti_prcm_clk_valid(clk_ident_t clk);
177int ti_prcm_clk_enable(clk_ident_t clk);
178int ti_prcm_clk_disable(clk_ident_t clk);
179int ti_prcm_clk_accessible(clk_ident_t clk);
180int ti_prcm_clk_disable_autoidle(clk_ident_t clk);
181int ti_prcm_clk_set_source(clk_ident_t clk, clk_src_t clksrc);
182int ti_prcm_clk_get_source_freq(clk_ident_t clk, unsigned int *freq);
183void ti_prcm_reset(void);
184
185#endif   /* _TI_PRCM_H_ */
186