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Code Issues Releases Activity

tmp451: Show correct temperature for T210B01

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The thermal measurement substrate transistor was changed in Mariko SoCs.
This ensures that it's properly offset by -12.5 °C.
This commit is contained in:
CTCaer 2021-01-14 17:58:23 +02:00
parent f6a3b2c9ac
commit 8fc5267110
3 changed files with 31 additions and 3 deletions
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6
bdk/soc/hw_init.c
View file

@ -42,6 +42,7 @@
#include <storage/nx_sd.h>
#include <storage/sdmmc.h>
#include <thermal/fan.h>
#include <thermal/tmp451.h>
#include <utils/util.h>
extern boot_cfg_t b_cfg;
@ -425,9 +426,10 @@ void hw_reinit_workaround(bool coreboot, u32 magic)
bpmp_clk_rate_set(BPMP_CLK_NORMAL);
#ifdef NYX
// Deinit touchscreen, 5V regulators and Joy-Con.
touch_power_off();
// Disable temperature sensor, touchscreen, 5V regulators and Joy-Con.
tmp451_end();
set_fan_duty(0);
touch_power_off();
jc_deinit();
regulator_5v_disable(REGULATOR_5V_ALL);
clock_disable_uart(UART_B);

24
bdk/thermal/tmp451.c
View file

@ -1,7 +1,7 @@
/*
* SOC/PCB Temperature driver for Nintendo Switch's TI TMP451
*
* Copyright (c) 2018 CTCaer
* Copyright (c) 2018-2020 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -16,7 +16,9 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <soc/hw_init.h>
#include <soc/i2c.h>
#include <soc/t210.h>
#include <thermal/tmp451.h>
u16 tmp451_get_soc_temp(bool intenger)
@ -56,6 +58,20 @@ void tmp451_init()
// Disable ALARM and Range to 0 - 127 oC.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CONFIG_REG, 0x80);
// Set remote sensor offsets based on SoC.
if (hw_get_chip_id() == GP_HIDREV_MAJOR_T210)
{
// Set offset to 0 oC for Erista.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TMP_OFH_REG, 0);
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TMP_OFL_REG, 0);
}
else
{
// Set offset to -12.5 oC for Mariko.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TMP_OFH_REG, 0xF3); // - 13 oC.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_SOC_TMP_OFL_REG, 0x80); // + 0.5 oC.
}
// Set conversion rate to 32/s and make a read to update the reg.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CNV_RATE_REG, 9);
tmp451_get_soc_temp(false);
@ -63,3 +79,9 @@ void tmp451_init()
// Set rate to every 4 seconds.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CNV_RATE_REG, 2);
}
void tmp451_end()
{
// Place into shutdown mode to conserve power.
i2c_send_byte(I2C_1, TMP451_I2C_ADDR, TMP451_CONFIG_REG, 0xC0);
}

4
bdk/thermal/tmp451.h
View file

@ -32,11 +32,15 @@
#define TMP451_SOC_TMP_DEC_REG 0x10
#define TMP451_PCB_TMP_DEC_REG 0x15
#define TMP451_SOC_TMP_OFH_REG 0x11
#define TMP451_SOC_TMP_OFL_REG 0x12
// If input is false, the return value is packed. MSByte is the integer in oC
// and the LSByte is the decimal point truncated to 2 decimal places.
// Otherwise it's an integer oC.
u16 tmp451_get_soc_temp(bool integer);
u16 tmp451_get_pcb_temp(bool integer);
void tmp451_init();
void tmp451_end();
#endif /* __TMP451_H_ */