1 /*
2 * OMAP SoC specific OPP Data helpers
3 *
4 * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/
5 * Nishanth Menon
6 * Kevin Hilman
7 * Copyright (C) 2010 Nokia Corporation.
8 * Eduardo Valentin
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
15 * kind, whether express or implied; without even the implied warranty
16 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19 #ifndef __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H
20 #define __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H
21
22 #include "omap_hwmod.h"
23
24 #include "voltage.h"
25
26 /*
27 * *BIG FAT WARNING*:
28 * USE the following ONLY in opp data initialization common to an SoC.
29 * DO NOT USE these in board files/pm core etc.
30 */
31
32 /**
33 * struct omap_opp_def - OMAP OPP Definition
34 * @hwmod_name: Name of the hwmod for this domain
35 * @freq: Frequency in hertz corresponding to this OPP
36 * @u_volt: Nominal voltage in microvolts corresponding to this OPP
37 * @default_available: True/false - is this OPP available by default
38 *
39 * OMAP SOCs have a standard set of tuples consisting of frequency and voltage
40 * pairs that the device will support per voltage domain. This is called
41 * Operating Points or OPP. The actual definitions of OMAP Operating Points
42 * varies over silicon within the same family of devices. For a specific
43 * domain, you can have a set of {frequency, voltage} pairs and this is denoted
44 * by an array of omap_opp_def. As the kernel boots and more information is
45 * available, a set of these are activated based on the precise nature of
46 * device the kernel boots up on. It is interesting to remember that each IP
47 * which belongs to a voltage domain may define their own set of OPPs on top
48 * of this - but this is handled by the appropriate driver.
49 */
50 struct omap_opp_def {
51 char *hwmod_name;
52
53 unsigned long freq;
54 unsigned long u_volt;
55
56 bool default_available;
57 };
58
59 /*
60 * Initialization wrapper used to define an OPP for OMAP variants.
61 */
62 #define OPP_INITIALIZER(_hwmod_name, _enabled, _freq, _uv) \
63 { \
64 .hwmod_name = _hwmod_name, \
65 .default_available = _enabled, \
66 .freq = _freq, \
67 .u_volt = _uv, \
68 }
69
70 /*
71 * Initialization wrapper used to define SmartReflex process data
72 * XXX Is this needed? Just use C99 initializers in data files?
73 */
74 #define VOLT_DATA_DEFINE(_v_nom, _efuse_offs, _errminlimit, _errgain) \
75 { \
76 .volt_nominal = _v_nom, \
77 .sr_efuse_offs = _efuse_offs, \
78 .sr_errminlimit = _errminlimit, \
79 .vp_errgain = _errgain \
80 }
81
82 /* Use this to initialize the default table */
83 extern int __init omap_init_opp_table(struct omap_opp_def *opp_def,
84 u32 opp_def_size);
85
86
87 extern struct omap_volt_data omap34xx_vddmpu_volt_data[];
88 extern struct omap_volt_data omap34xx_vddcore_volt_data[];
89 extern struct omap_volt_data omap36xx_vddmpu_volt_data[];
90 extern struct omap_volt_data omap36xx_vddcore_volt_data[];
91
92 extern struct omap_volt_data omap443x_vdd_mpu_volt_data[];
93 extern struct omap_volt_data omap443x_vdd_iva_volt_data[];
94 extern struct omap_volt_data omap443x_vdd_core_volt_data[];
95 extern struct omap_volt_data omap446x_vdd_mpu_volt_data[];
96 extern struct omap_volt_data omap446x_vdd_iva_volt_data[];
97 extern struct omap_volt_data omap446x_vdd_core_volt_data[];
98
99 #endif /* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */