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 <plat/omap_hwmod.h> 23 24 /* 25 * *BIG FAT WARNING*: 26 * USE the following ONLY in opp data initialization common to an SoC. 27 * DO NOT USE these in board files/pm core etc. 28 */ 29 30 /** 31 * struct omap_opp_def - OMAP OPP Definition 32 * @hwmod_name: Name of the hwmod for this domain 33 * @freq: Frequency in hertz corresponding to this OPP 34 * @u_volt: Nominal voltage in microvolts corresponding to this OPP 35 * @default_available: True/false - is this OPP available by default 36 * 37 * OMAP SOCs have a standard set of tuples consisting of frequency and voltage 38 * pairs that the device will support per voltage domain. This is called 39 * Operating Points or OPP. The actual definitions of OMAP Operating Points 40 * varies over silicon within the same family of devices. For a specific 41 * domain, you can have a set of {frequency, voltage} pairs and this is denoted 42 * by an array of omap_opp_def. As the kernel boots and more information is 43 * available, a set of these are activated based on the precise nature of 44 * device the kernel boots up on. It is interesting to remember that each IP 45 * which belongs to a voltage domain may define their own set of OPPs on top 46 * of this - but this is handled by the appropriate driver. 47 */ 48 struct omap_opp_def { 49 char *hwmod_name; 50 51 unsigned long freq; 52 unsigned long u_volt; 53 54 bool default_available; 55 }; 56 57 /* 58 * Initialization wrapper used to define an OPP for OMAP variants. 59 */ 60 #define OPP_INITIALIZER(_hwmod_name, _enabled, _freq, _uv) \ 61 { \ 62 .hwmod_name = _hwmod_name, \ 63 .default_available = _enabled, \ 64 .freq = _freq, \ 65 .u_volt = _uv, \ 66 } 67 68 /* Use this to initialize the default table */ 69 extern int __init omap_init_opp_table(struct omap_opp_def *opp_def, 70 u32 opp_def_size); 71 72 #endif /* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */ 73