1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * OMAP4xxx bandgap registers, bitfields and temperature definitions
4 *
5 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
6 * Contact:
7 * Eduardo Valentin <eduardo.valentin@ti.com>
8 */
9#ifndef __OMAP4XXX_BANDGAP_H
10#define __OMAP4XXX_BANDGAP_H
11
12/**
13 * *** OMAP4430 ***
14 *
15 * Below, in sequence, are the Register definitions,
16 * the bitfields and the temperature definitions for OMAP4430.
17 */
18
19/**
20 * OMAP4430 register definitions
21 *
22 * Registers are defined as offsets. The offsets are
23 * relative to FUSE_OPP_BGAP on 4430.
24 */
25
26/* OMAP4430.FUSE_OPP_BGAP */
27#define OMAP4430_FUSE_OPP_BGAP 0x0
28
29/* OMAP4430.TEMP_SENSOR */
30#define OMAP4430_TEMP_SENSOR_CTRL_OFFSET 0xCC
31
32/**
33 * Register and bit definitions for OMAP4430
34 *
35 * All the macros bellow define the required bits for
36 * controlling temperature on OMAP4430. Bit defines are
37 * grouped by register.
38 */
39
40/* OMAP4430.TEMP_SENSOR bits */
41#define OMAP4430_BGAP_TEMPSOFF_MASK BIT(12)
42#define OMAP4430_BGAP_TSHUT_MASK BIT(11)
43#define OMAP4430_CONTINUOUS_MODE_MASK BIT(10)
44#define OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK BIT(9)
45#define OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK BIT(8)
46#define OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK (0xff << 0)
47
48/**
49 * Temperature limits and thresholds for OMAP4430
50 *
51 * All the macros bellow are definitions for handling the
52 * ADC conversions and representation of temperature limits
53 * and thresholds for OMAP4430.
54 */
55
56/*
57 * ADC conversion table limits. Ignore values outside the TRM listed
58 * range to avoid bogus thermal shutdowns. See omap4430 TRM chapter
59 * "18.4.10.2.3 ADC Codes Versus Temperature".
60 */
61#define OMAP4430_ADC_START_VALUE 13
62#define OMAP4430_ADC_END_VALUE 107
63/* bandgap clock limits (no control on 4430) */
64#define OMAP4430_MAX_FREQ 32768
65#define OMAP4430_MIN_FREQ 32768
66
67/**
68 * *** OMAP4460 *** Applicable for OMAP4470
69 *
70 * Below, in sequence, are the Register definitions,
71 * the bitfields and the temperature definitions for OMAP4460.
72 */
73
74/**
75 * OMAP4460 register definitions
76 *
77 * Registers are defined as offsets. The offsets are
78 * relative to FUSE_OPP_BGAP on 4460.
79 */
80
81/* OMAP4460.FUSE_OPP_BGAP */
82#define OMAP4460_FUSE_OPP_BGAP 0x0
83
84/* OMAP4460.TEMP_SENSOR */
85#define OMAP4460_TEMP_SENSOR_CTRL_OFFSET 0xCC
86
87/* OMAP4460.BANDGAP_CTRL */
88#define OMAP4460_BGAP_CTRL_OFFSET 0x118
89
90/* OMAP4460.BANDGAP_COUNTER */
91#define OMAP4460_BGAP_COUNTER_OFFSET 0x11C
92
93/* OMAP4460.BANDGAP_THRESHOLD */
94#define OMAP4460_BGAP_THRESHOLD_OFFSET 0x120
95
96/* OMAP4460.TSHUT_THRESHOLD */
97#define OMAP4460_BGAP_TSHUT_OFFSET 0x124
98
99/* OMAP4460.BANDGAP_STATUS */
100#define OMAP4460_BGAP_STATUS_OFFSET 0x128
101
102/**
103 * Register bitfields for OMAP4460
104 *
105 * All the macros bellow define the required bits for
106 * controlling temperature on OMAP4460. Bit defines are
107 * grouped by register.
108 */
109/* OMAP4460.TEMP_SENSOR bits */
110#define OMAP4460_BGAP_TEMPSOFF_MASK BIT(13)
111#define OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK BIT(11)
112#define OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK BIT(10)
113#define OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK (0x3ff << 0)
114
115/* OMAP4460.BANDGAP_CTRL bits */
116#define OMAP4460_CONTINUOUS_MODE_MASK BIT(31)
117#define OMAP4460_MASK_HOT_MASK BIT(1)
118#define OMAP4460_MASK_COLD_MASK BIT(0)
119
120/* OMAP4460.BANDGAP_COUNTER bits */
121#define OMAP4460_COUNTER_MASK (0xffffff << 0)
122
123/* OMAP4460.BANDGAP_THRESHOLD bits */
124#define OMAP4460_T_HOT_MASK (0x3ff << 16)
125#define OMAP4460_T_COLD_MASK (0x3ff << 0)
126
127/* OMAP4460.TSHUT_THRESHOLD bits */
128#define OMAP4460_TSHUT_HOT_MASK (0x3ff << 16)
129#define OMAP4460_TSHUT_COLD_MASK (0x3ff << 0)
130
131/* OMAP4460.BANDGAP_STATUS bits */
132#define OMAP4460_HOT_FLAG_MASK BIT(1)
133#define OMAP4460_COLD_FLAG_MASK BIT(0)
134
135/**
136 * Temperature limits and thresholds for OMAP4460
137 *
138 * All the macros bellow are definitions for handling the
139 * ADC conversions and representation of temperature limits
140 * and thresholds for OMAP4460.
141 */
142
143/* ADC conversion table limits */
144#define OMAP4460_ADC_START_VALUE 530
145#define OMAP4460_ADC_END_VALUE 932
146/* bandgap clock limits */
147#define OMAP4460_MAX_FREQ 1500000
148#define OMAP4460_MIN_FREQ 1000000
149/* interrupts thresholds */
150#define OMAP4460_TSHUT_HOT 900 /* 122 deg C */
151#define OMAP4460_TSHUT_COLD 895 /* 100 deg C */
152#define OMAP4460_T_HOT 800 /* 73 deg C */
153#define OMAP4460_T_COLD 795 /* 71 deg C */
154
155#endif /* __OMAP4XXX_BANDGAP_H */
156

source code of linux/drivers/thermal/ti-soc-thermal/omap4xxx-bandgap.h