1 /* 2 * OMAP4xxx bandgap registers, bitfields and temperature definitions 3 * 4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ 5 * Contact: 6 * Eduardo Valentin <eduardo.valentin@ti.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA 21 * 22 */ 23 #ifndef __OMAP4XXX_BANDGAP_H 24 #define __OMAP4XXX_BANDGAP_H 25 26 /** 27 * *** OMAP4430 *** 28 * 29 * Below, in sequence, are the Register definitions, 30 * the bitfields and the temperature definitions for OMAP4430. 31 */ 32 33 /** 34 * OMAP4430 register definitions 35 * 36 * Registers are defined as offsets. The offsets are 37 * relative to FUSE_OPP_BGAP on 4430. 38 */ 39 40 /* OMAP4430.FUSE_OPP_BGAP */ 41 #define OMAP4430_FUSE_OPP_BGAP 0x0 42 43 /* OMAP4430.TEMP_SENSOR */ 44 #define OMAP4430_TEMP_SENSOR_CTRL_OFFSET 0xCC 45 46 /** 47 * Register and bit definitions for OMAP4430 48 * 49 * All the macros bellow define the required bits for 50 * controlling temperature on OMAP4430. Bit defines are 51 * grouped by register. 52 */ 53 54 /* OMAP4430.TEMP_SENSOR bits */ 55 #define OMAP4430_BGAP_TEMPSOFF_MASK BIT(12) 56 #define OMAP4430_BGAP_TSHUT_MASK BIT(11) 57 #define OMAP4430_SINGLE_MODE_MASK BIT(10) 58 #define OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK BIT(9) 59 #define OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK BIT(8) 60 #define OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK (0xff << 0) 61 62 /** 63 * Temperature limits and thresholds for OMAP4430 64 * 65 * All the macros bellow are definitions for handling the 66 * ADC conversions and representation of temperature limits 67 * and thresholds for OMAP4430. 68 */ 69 70 /* 71 * ADC conversion table limits. Ignore values outside the TRM listed 72 * range to avoid bogus thermal shutdowns. See omap4430 TRM chapter 73 * "18.4.10.2.3 ADC Codes Versus Temperature". 74 */ 75 #define OMAP4430_ADC_START_VALUE 13 76 #define OMAP4430_ADC_END_VALUE 107 77 /* bandgap clock limits (no control on 4430) */ 78 #define OMAP4430_MAX_FREQ 32768 79 #define OMAP4430_MIN_FREQ 32768 80 /* sensor limits */ 81 #define OMAP4430_MIN_TEMP -40000 82 #define OMAP4430_MAX_TEMP 125000 83 #define OMAP4430_HYST_VAL 5000 84 85 /** 86 * *** OMAP4460 *** Applicable for OMAP4470 87 * 88 * Below, in sequence, are the Register definitions, 89 * the bitfields and the temperature definitions for OMAP4460. 90 */ 91 92 /** 93 * OMAP4460 register definitions 94 * 95 * Registers are defined as offsets. The offsets are 96 * relative to FUSE_OPP_BGAP on 4460. 97 */ 98 99 /* OMAP4460.FUSE_OPP_BGAP */ 100 #define OMAP4460_FUSE_OPP_BGAP 0x0 101 102 /* OMAP4460.TEMP_SENSOR */ 103 #define OMAP4460_TEMP_SENSOR_CTRL_OFFSET 0xCC 104 105 /* OMAP4460.BANDGAP_CTRL */ 106 #define OMAP4460_BGAP_CTRL_OFFSET 0x118 107 108 /* OMAP4460.BANDGAP_COUNTER */ 109 #define OMAP4460_BGAP_COUNTER_OFFSET 0x11C 110 111 /* OMAP4460.BANDGAP_THRESHOLD */ 112 #define OMAP4460_BGAP_THRESHOLD_OFFSET 0x120 113 114 /* OMAP4460.TSHUT_THRESHOLD */ 115 #define OMAP4460_BGAP_TSHUT_OFFSET 0x124 116 117 /* OMAP4460.BANDGAP_STATUS */ 118 #define OMAP4460_BGAP_STATUS_OFFSET 0x128 119 120 /** 121 * Register bitfields for OMAP4460 122 * 123 * All the macros bellow define the required bits for 124 * controlling temperature on OMAP4460. Bit defines are 125 * grouped by register. 126 */ 127 /* OMAP4460.TEMP_SENSOR bits */ 128 #define OMAP4460_BGAP_TEMPSOFF_MASK BIT(13) 129 #define OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK BIT(11) 130 #define OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK BIT(10) 131 #define OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK (0x3ff << 0) 132 133 /* OMAP4460.BANDGAP_CTRL bits */ 134 #define OMAP4460_SINGLE_MODE_MASK BIT(31) 135 #define OMAP4460_MASK_HOT_MASK BIT(1) 136 #define OMAP4460_MASK_COLD_MASK BIT(0) 137 138 /* OMAP4460.BANDGAP_COUNTER bits */ 139 #define OMAP4460_COUNTER_MASK (0xffffff << 0) 140 141 /* OMAP4460.BANDGAP_THRESHOLD bits */ 142 #define OMAP4460_T_HOT_MASK (0x3ff << 16) 143 #define OMAP4460_T_COLD_MASK (0x3ff << 0) 144 145 /* OMAP4460.TSHUT_THRESHOLD bits */ 146 #define OMAP4460_TSHUT_HOT_MASK (0x3ff << 16) 147 #define OMAP4460_TSHUT_COLD_MASK (0x3ff << 0) 148 149 /* OMAP4460.BANDGAP_STATUS bits */ 150 #define OMAP4460_CLEAN_STOP_MASK BIT(3) 151 #define OMAP4460_BGAP_ALERT_MASK BIT(2) 152 #define OMAP4460_HOT_FLAG_MASK BIT(1) 153 #define OMAP4460_COLD_FLAG_MASK BIT(0) 154 155 /** 156 * Temperature limits and thresholds for OMAP4460 157 * 158 * All the macros bellow are definitions for handling the 159 * ADC conversions and representation of temperature limits 160 * and thresholds for OMAP4460. 161 */ 162 163 /* ADC conversion table limits */ 164 #define OMAP4460_ADC_START_VALUE 530 165 #define OMAP4460_ADC_END_VALUE 932 166 /* bandgap clock limits */ 167 #define OMAP4460_MAX_FREQ 1500000 168 #define OMAP4460_MIN_FREQ 1000000 169 /* sensor limits */ 170 #define OMAP4460_MIN_TEMP -40000 171 #define OMAP4460_MAX_TEMP 123000 172 #define OMAP4460_HYST_VAL 5000 173 /* interrupts thresholds */ 174 #define OMAP4460_TSHUT_HOT 900 /* 122 deg C */ 175 #define OMAP4460_TSHUT_COLD 895 /* 100 deg C */ 176 #define OMAP4460_T_HOT 800 /* 73 deg C */ 177 #define OMAP4460_T_COLD 795 /* 71 deg C */ 178 179 #endif /* __OMAP4XXX_BANDGAP_H */ 180