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 */
100