forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
158 lines
5.0 KiB
158 lines
5.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* OMAP3 thermal driver. |
|
* |
|
* Copyright (C) 2011-2012 Texas Instruments Inc. |
|
* Copyright (C) 2014 Pavel Machek <[email protected]> |
|
* |
|
* Note |
|
* http://www.ti.com/lit/er/sprz278f/sprz278f.pdf "Advisory |
|
* 3.1.1.186 MMC OCP Clock Not Gated When Thermal Sensor Is Used" |
|
* |
|
* Also TI says: |
|
* Just be careful when you try to make thermal policy like decisions |
|
* based on this sensor. Placement of the sensor w.r.t the actual logic |
|
* generating heat has to be a factor as well. If you are just looking |
|
* for an approximation temperature (thermometerish kind), you might be |
|
* ok with this. I am not sure we'd find any TI data around this.. just a |
|
* heads up. |
|
*/ |
|
|
|
#include "ti-thermal.h" |
|
#include "ti-bandgap.h" |
|
|
|
/* |
|
* OMAP34XX has one instance of thermal sensor for MPU |
|
* need to describe the individual bit fields |
|
*/ |
|
static struct temp_sensor_registers |
|
omap34xx_mpu_temp_sensor_registers = { |
|
.temp_sensor_ctrl = 0, |
|
.bgap_soc_mask = BIT(8), |
|
.bgap_eocz_mask = BIT(7), |
|
.bgap_dtemp_mask = 0x7f, |
|
|
|
.bgap_mode_ctrl = 0, |
|
.mode_ctrl_mask = BIT(9), |
|
}; |
|
|
|
/* Thresholds and limits for OMAP34XX MPU temperature sensor */ |
|
static struct temp_sensor_data omap34xx_mpu_temp_sensor_data = { |
|
.min_freq = 32768, |
|
.max_freq = 32768, |
|
}; |
|
|
|
/* |
|
* Temperature values in milli degree celsius |
|
*/ |
|
static const int |
|
omap34xx_adc_to_temp[128] = { |
|
-40000, -40000, -40000, -40000, -40000, -39000, -38000, -36000, |
|
-34000, -32000, -31000, -29000, -28000, -26000, -25000, -24000, |
|
-22000, -21000, -19000, -18000, -17000, -15000, -14000, -12000, |
|
-11000, -9000, -8000, -7000, -5000, -4000, -2000, -1000, 0000, |
|
1000, 3000, 4000, 5000, 7000, 8000, 10000, 11000, 13000, 14000, |
|
15000, 17000, 18000, 20000, 21000, 22000, 24000, 25000, 27000, |
|
28000, 30000, 31000, 32000, 34000, 35000, 37000, 38000, 39000, |
|
41000, 42000, 44000, 45000, 47000, 48000, 49000, 51000, 52000, |
|
53000, 55000, 56000, 58000, 59000, 60000, 62000, 63000, 65000, |
|
66000, 67000, 69000, 70000, 72000, 73000, 74000, 76000, 77000, |
|
79000, 80000, 81000, 83000, 84000, 85000, 87000, 88000, 89000, |
|
91000, 92000, 94000, 95000, 96000, 98000, 99000, 100000, |
|
102000, 103000, 105000, 106000, 107000, 109000, 110000, 111000, |
|
113000, 114000, 116000, 117000, 118000, 120000, 121000, 122000, |
|
124000, 124000, 125000, 125000, 125000, 125000, 125000 |
|
}; |
|
|
|
/* OMAP34XX data */ |
|
const struct ti_bandgap_data omap34xx_data = { |
|
.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE, |
|
.fclock_name = "ts_fck", |
|
.div_ck_name = "ts_fck", |
|
.conv_table = omap34xx_adc_to_temp, |
|
.adc_start_val = 0, |
|
.adc_end_val = 127, |
|
.expose_sensor = ti_thermal_expose_sensor, |
|
.remove_sensor = ti_thermal_remove_sensor, |
|
|
|
.sensors = { |
|
{ |
|
.registers = &omap34xx_mpu_temp_sensor_registers, |
|
.ts_data = &omap34xx_mpu_temp_sensor_data, |
|
.domain = "cpu", |
|
.slope_pcb = 0, |
|
.constant_pcb = 20000, |
|
.register_cooling = NULL, |
|
.unregister_cooling = NULL, |
|
}, |
|
}, |
|
.sensor_count = 1, |
|
}; |
|
|
|
/* |
|
* OMAP36XX has one instance of thermal sensor for MPU |
|
* need to describe the individual bit fields |
|
*/ |
|
static struct temp_sensor_registers |
|
omap36xx_mpu_temp_sensor_registers = { |
|
.temp_sensor_ctrl = 0, |
|
.bgap_soc_mask = BIT(9), |
|
.bgap_eocz_mask = BIT(8), |
|
.bgap_dtemp_mask = 0xFF, |
|
|
|
.bgap_mode_ctrl = 0, |
|
.mode_ctrl_mask = BIT(10), |
|
}; |
|
|
|
/* Thresholds and limits for OMAP36XX MPU temperature sensor */ |
|
static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = { |
|
.min_freq = 32768, |
|
.max_freq = 32768, |
|
}; |
|
|
|
/* |
|
* Temperature values in milli degree celsius |
|
*/ |
|
static const int |
|
omap36xx_adc_to_temp[128] = { |
|
-40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000, |
|
-40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000, |
|
-32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500, |
|
-17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500, |
|
-1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500, |
|
15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000, |
|
32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000, |
|
47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000, |
|
62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000, |
|
78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000, |
|
93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000, |
|
109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000, |
|
123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000, |
|
125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000, |
|
125000, 125000, 125000, 125000, 125000, 125000, 125000 |
|
}; |
|
|
|
/* OMAP36XX data */ |
|
const struct ti_bandgap_data omap36xx_data = { |
|
.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE, |
|
.fclock_name = "ts_fck", |
|
.div_ck_name = "ts_fck", |
|
.conv_table = omap36xx_adc_to_temp, |
|
.adc_start_val = 0, |
|
.adc_end_val = 127, |
|
.expose_sensor = ti_thermal_expose_sensor, |
|
.remove_sensor = ti_thermal_remove_sensor, |
|
|
|
.sensors = { |
|
{ |
|
.registers = &omap36xx_mpu_temp_sensor_registers, |
|
.ts_data = &omap36xx_mpu_temp_sensor_data, |
|
.domain = "cpu", |
|
.slope_pcb = 0, |
|
.constant_pcb = 20000, |
|
.register_cooling = NULL, |
|
.unregister_cooling = NULL, |
|
}, |
|
}, |
|
.sensor_count = 1, |
|
};
|
|
|