esp-idf/components/soc/esp32s2beta/rtc_init.c

201 lines
9.6 KiB
C
Raw Normal View History

2019-12-26 02:25:24 -05:00
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
2019-04-03 05:08:02 -04:00
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include "soc/soc.h"
#include "soc/rtc.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/dport_reg.h"
#include "soc/efuse_periph.h"
2019-04-03 05:08:02 -04:00
#include "soc/gpio_reg.h"
#include "soc/spi_mem_reg.h"
2019-12-27 04:08:28 -05:00
#include "soc/extmem_reg.h"
2019-04-03 05:08:02 -04:00
#include "i2c_rtc_clk.h"
void rtc_init(rtc_config_t cfg)
{
CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG, RTC_CNTL_PVTMON_PU);
2019-08-08 08:22:43 -04:00
rtc_clk_set_xtal_wait();
2019-04-03 05:08:02 -04:00
REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_PLL_BUF_WAIT, cfg.pll_wait);
REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_CK8M_WAIT, cfg.ck8m_wait);
/* Moved from rtc sleep to rtc init to save sleep function running time */
// set shortest possible sleep time limit
REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_MIN_SLP_VAL, RTC_CNTL_MIN_SLP_VAL_MIN);
/* This power domian removed
* set rom&ram timer
* REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_ROM_RAM_POWERUP_TIMER, ROM_RAM_POWERUP_CYCLES);
* REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_ROM_RAM_WAIT_TIMER, ROM_RAM_WAIT_CYCLES);
*/
// set wifi timer
2019-12-27 04:08:28 -05:00
rtc_init_config_t rtc_init_cfg = RTC_INIT_CONFIG_DEFAULT();
REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_POWERUP_TIMER, rtc_init_cfg.wifi_powerup_cycles);
REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_WAIT_TIMER, rtc_init_cfg.wifi_wait_cycles);
2019-04-03 05:08:02 -04:00
// set rtc peri timer
2019-12-27 04:08:28 -05:00
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_POWERUP_TIMER, rtc_init_cfg.rtc_powerup_cycles);
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_WAIT_TIMER, rtc_init_cfg.rtc_wait_cycles);
2019-04-03 05:08:02 -04:00
// set digital wrap timer
2019-12-27 04:08:28 -05:00
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_POWERUP_TIMER, rtc_init_cfg.dg_wrap_powerup_cycles);
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_WAIT_TIMER, rtc_init_cfg.dg_wrap_wait_cycles);
2019-04-03 05:08:02 -04:00
// set rtc memory timer
2019-12-27 04:08:28 -05:00
REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_POWERUP_TIMER, rtc_init_cfg.rtc_mem_powerup_cycles);
REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_WAIT_TIMER, rtc_init_cfg.rtc_mem_wait_cycles);
2019-04-03 05:08:02 -04:00
SET_PERI_REG_MASK(RTC_CNTL_BIAS_CONF_REG,
2019-12-26 02:25:24 -05:00
RTC_CNTL_DEC_HEARTBEAT_WIDTH | RTC_CNTL_INC_HEARTBEAT_PERIOD);
2019-04-03 05:08:02 -04:00
/* Reset RTC bias to default value (needed if waking up from deep sleep) */
REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DBIAS_WAK, RTC_CNTL_DBIAS_1V10);
REG_SET_FIELD(RTC_CNTL_REG, RTC_CNTL_DBIAS_SLP, RTC_CNTL_DBIAS_1V10);
if (cfg.clkctl_init) {
//clear CMMU clock force on
2019-12-27 04:08:28 -05:00
CLEAR_PERI_REG_MASK(EXTMEM_PRO_CACHE_MMU_POWER_CTRL_REG, EXTMEM_PRO_CACHE_MMU_MEM_FORCE_ON);
2019-04-03 05:08:02 -04:00
//clear rom clock force on
REG_SET_FIELD(DPORT_ROM_CTRL_0_REG, DPORT_ROM_FO, 0);
//clear sram clock force on
REG_SET_FIELD(DPORT_SRAM_CTRL_0_REG, DPORT_SRAM_FO, 0);
//clear tag clock force on
2019-12-27 04:08:28 -05:00
CLEAR_PERI_REG_MASK(EXTMEM_PRO_DCACHE_TAG_POWER_CTRL_REG, EXTMEM_PRO_DCACHE_TAG_MEM_FORCE_ON);
CLEAR_PERI_REG_MASK(EXTMEM_PRO_ICACHE_TAG_POWER_CTRL_REG, EXTMEM_PRO_ICACHE_TAG_MEM_FORCE_ON);
2019-04-03 05:08:02 -04:00
//clear register clock force on
CLEAR_PERI_REG_MASK(SPI_MEM_CLOCK_GATE_REG(0), SPI_MEM_CLK_EN);
CLEAR_PERI_REG_MASK(SPI_MEM_CLOCK_GATE_REG(1), SPI_MEM_CLK_EN);
}
if (cfg.pwrctl_init) {
CLEAR_PERI_REG_MASK(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_CK8M_FORCE_PU);
//cancel xtal force pu if no need to force power up
//cannot cancel xtal force pu if pll is force power on
if (!(cfg.xtal_fpu | cfg.bbpll_fpu)) {
CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_XTL_FORCE_PU);
} else {
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_XTL_FORCE_PU);
}
// CLEAR APLL close
CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG, RTC_CNTL_PLLA_FORCE_PU);
SET_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG, RTC_CNTL_PLLA_FORCE_PD);
//cancel bbpll force pu if setting no force power up
if (!cfg.bbpll_fpu) {
CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BBPLL_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BBPLL_I2C_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BB_I2C_FORCE_PU);
} else {
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BBPLL_FORCE_PU);
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BBPLL_I2C_FORCE_PU);
2019-04-03 05:08:02 -04:00
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BB_I2C_FORCE_PU);
}
//cancel RTC REG force PU
2019-12-27 04:08:28 -05:00
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FORCE_PU);
2019-04-03 05:08:02 -04:00
CLEAR_PERI_REG_MASK(RTC_CNTL_REG, RTC_CNTL_REGULATOR_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_REG, RTC_CNTL_DBOOST_FORCE_PU);
//combine two rtc memory options
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_NOISO);
if (cfg.rtc_dboost_fpd) {
SET_PERI_REG_MASK(RTC_CNTL_REG, RTC_CNTL_DBOOST_FORCE_PD);
} else {
CLEAR_PERI_REG_MASK(RTC_CNTL_REG, RTC_CNTL_DBOOST_FORCE_PD);
}
2019-12-27 04:08:28 -05:00
//cancel sar i2c pd force
CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG,RTC_CNTL_SAR_I2C_FORCE_PD);
2019-04-03 05:08:02 -04:00
//cancel digital pu force
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_PU);
2019-12-27 04:08:28 -05:00
//cannel i2c_reset_protect pd force
CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG,RTC_CNTL_I2C_RESET_POR_FORCE_PD);
2019-04-03 05:08:02 -04:00
/* If this mask is enabled, all soc memories cannot enter power down mode */
/* We should control soc memory power down mode from RTC, so we will not touch this register any more */
CLEAR_PERI_REG_MASK(DPORT_MEM_PD_MASK_REG, DPORT_LSLP_MEM_PD_MASK);
/* If this pd_cfg is set to 1, all memory won't enter low power mode during light sleep */
/* If this pd_cfg is set to 0, all memory will enter low power mode during light sleep */
rtc_sleep_pd_config_t pd_cfg = RTC_SLEEP_PD_CONFIG_ALL(0);
rtc_sleep_pd(pd_cfg);
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_DG_WRAP_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_WIFI_FORCE_PU);
// ROM_RAM power domain is removed
// CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_PWC_REG, RTC_CNTL_CPU_ROM_RAM_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_WRAP_FORCE_NOISO);
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_WIFI_FORCE_NOISO);
// CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_CPU_ROM_RAM_FORCE_NOISO);
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_FORCE_NOISO);
//cancel digital PADS force no iso
2019-12-26 02:25:24 -05:00
if (cfg.cpu_waiti_clk_gate) {
2019-06-16 23:50:37 -04:00
CLEAR_PERI_REG_MASK(DPORT_CPU_PER_CONF_REG, DPORT_CPU_WAIT_MODE_FORCE_ON);
2019-12-26 02:25:24 -05:00
} else {
2019-06-16 23:50:37 -04:00
SET_PERI_REG_MASK(DPORT_CPU_PER_CONF_REG, DPORT_CPU_WAIT_MODE_FORCE_ON);
}
/*if DPORT_CPU_WAIT_MODE_FORCE_ON == 0 , the cpu clk will be closed when cpu enter WAITI mode*/
2019-04-03 05:08:02 -04:00
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_UNHOLD);
CLEAR_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_DG_PAD_FORCE_NOISO);
}
2019-12-26 02:25:24 -05:00
}
2019-04-03 05:08:02 -04:00
2019-08-11 22:06:07 -04:00
rtc_vddsdio_config_t rtc_vddsdio_get_config(void)
2019-04-03 05:08:02 -04:00
{
rtc_vddsdio_config_t result;
uint32_t sdio_conf_reg = REG_READ(RTC_CNTL_SDIO_CONF_REG);
result.drefh = (sdio_conf_reg & RTC_CNTL_DREFH_SDIO_M) >> RTC_CNTL_DREFH_SDIO_S;
result.drefm = (sdio_conf_reg & RTC_CNTL_DREFM_SDIO_M) >> RTC_CNTL_DREFM_SDIO_S;
result.drefl = (sdio_conf_reg & RTC_CNTL_DREFL_SDIO_M) >> RTC_CNTL_DREFL_SDIO_S;
if (sdio_conf_reg & RTC_CNTL_SDIO_FORCE) {
// Get configuration from RTC
result.force = 1;
result.enable = (sdio_conf_reg & RTC_CNTL_XPD_SDIO_REG_M) >> RTC_CNTL_XPD_SDIO_REG_S;
result.tieh = (sdio_conf_reg & RTC_CNTL_SDIO_TIEH_M) >> RTC_CNTL_SDIO_TIEH_S;
return result;
} else {
result.force = 0;
2019-04-03 05:08:02 -04:00
}
2019-12-26 02:25:24 -05:00
#if 0 // ToDo: re-enable the commented codes
uint32_t efuse_reg = REG_READ(EFUSE_RD_REPEAT_DATA1_REG);
if (efuse_reg & EFUSE_SDIO_FORCE) {
2019-04-03 05:08:02 -04:00
// Get configuration from EFUSE
result.enable = (efuse_reg & EFUSE_SDIO_XPD_M) >> EFUSE_SDIO_XPD_S;
result.tieh = (efuse_reg & EFUSE_SDIO_TIEH_M) >> EFUSE_SDIO_TIEH_S;
result.drefm = (efuse_reg & EFUSE_SDIO_DREFM_M) >> EFUSE_SDIO_DREFM_S;
result.drefl = (efuse_reg & EFUSE_SDIO_DREFL_M) >> EFUSE_SDIO_DREFL_S;
efuse_reg = REG_READ(EFUSE_RD_REPEAT_DATA0_REG);
result.drefh = (efuse_reg & EFUSE_SDIO_DREFH_M) >> EFUSE_SDIO_DREFH_S;
2019-04-03 05:08:02 -04:00
return result;
}
2019-12-26 02:25:24 -05:00
#endif
2019-04-03 05:08:02 -04:00
// Otherwise, VDD_SDIO is controlled by bootstrapping pin
uint32_t strap_reg = REG_READ(GPIO_STRAP_REG);
result.tieh = (strap_reg & BIT(5)) ? RTC_VDDSDIO_TIEH_1_8V : RTC_VDDSDIO_TIEH_3_3V;
result.enable = 1;
return result;
}
void rtc_vddsdio_set_config(rtc_vddsdio_config_t config)
{
uint32_t val = 0;
val |= (config.force << RTC_CNTL_SDIO_FORCE_S);
val |= (config.enable << RTC_CNTL_XPD_SDIO_REG_S);
val |= (config.drefh << RTC_CNTL_DREFH_SDIO_S);
val |= (config.drefm << RTC_CNTL_DREFM_SDIO_S);
val |= (config.drefl << RTC_CNTL_DREFL_SDIO_S);
val |= (config.tieh << RTC_CNTL_SDIO_TIEH_S);
val |= RTC_CNTL_SDIO_PD_EN;
REG_WRITE(RTC_CNTL_SDIO_CONF_REG, val);
}