OVMS3-idf/components/soc/esp32s2beta/rtc_init.c

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2019-04-03 09:08:02 +00:00
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// 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_reg.h"
#include "soc/gpio_reg.h"
#include "soc/spi_mem_reg.h"
#include "i2c_rtc_clk.h"
/* Various delays to be programmed into power control state machines */
#define RTC_CNTL_XTL_BUF_WAIT_SLP 2
#define RTC_CNTL_PLL_BUF_WAIT_SLP 2
#define RTC_CNTL_CK8M_WAIT_SLP 4
#define OTHER_BLOCKS_POWERUP 1
#define OTHER_BLOCKS_WAIT 1
#define ROM_RAM_POWERUP_CYCLES OTHER_BLOCKS_POWERUP
#define ROM_RAM_WAIT_CYCLES OTHER_BLOCKS_WAIT
#define WIFI_POWERUP_CYCLES OTHER_BLOCKS_POWERUP
#define WIFI_WAIT_CYCLES OTHER_BLOCKS_WAIT
#define RTC_POWERUP_CYCLES OTHER_BLOCKS_POWERUP
#define RTC_WAIT_CYCLES OTHER_BLOCKS_WAIT
#define DG_WRAP_POWERUP_CYCLES OTHER_BLOCKS_POWERUP
#define DG_WRAP_WAIT_CYCLES OTHER_BLOCKS_WAIT
#define RTC_MEM_POWERUP_CYCLES OTHER_BLOCKS_POWERUP
#define RTC_MEM_WAIT_CYCLES OTHER_BLOCKS_WAIT
#ifndef CONFIG_HARDWARE_IS_FPGA
void rtc_init(rtc_config_t cfg)
{
CLEAR_PERI_REG_MASK(RTC_CNTL_ANA_CONF_REG, RTC_CNTL_PVTMON_PU);
REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_PLL_BUF_WAIT, cfg.pll_wait);
REG_SET_FIELD(RTC_CNTL_TIMER1_REG, RTC_CNTL_XTL_BUF_WAIT, cfg.xtal_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
REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_POWERUP_TIMER, WIFI_POWERUP_CYCLES);
REG_SET_FIELD(RTC_CNTL_TIMER3_REG, RTC_CNTL_WIFI_WAIT_TIMER, WIFI_WAIT_CYCLES);
// set rtc peri timer
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_POWERUP_TIMER, RTC_POWERUP_CYCLES);
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_WAIT_TIMER, RTC_WAIT_CYCLES);
// set digital wrap timer
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_POWERUP_TIMER, DG_WRAP_POWERUP_CYCLES);
REG_SET_FIELD(RTC_CNTL_TIMER4_REG, RTC_CNTL_DG_WRAP_WAIT_TIMER, DG_WRAP_WAIT_CYCLES);
// set rtc memory timer
REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_POWERUP_TIMER, RTC_MEM_POWERUP_CYCLES);
REG_SET_FIELD(RTC_CNTL_TIMER5_REG, RTC_CNTL_RTCMEM_WAIT_TIMER, RTC_MEM_WAIT_CYCLES);
SET_PERI_REG_MASK(RTC_CNTL_BIAS_CONF_REG,
RTC_CNTL_DEC_HEARTBEAT_WIDTH | RTC_CNTL_INC_HEARTBEAT_PERIOD);
/* 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
CLEAR_PERI_REG_MASK(DPORT_PRO_CACHE_MMU_POWER_CTRL_REG, DPORT_PRO_CACHE_MMU_MEM_FORCE_ON);
//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
CLEAR_PERI_REG_MASK(DPORT_PRO_DCACHE_TAG_POWER_CTRL_REG, DPORT_PRO_DCACHE_TAG_MEM_FORCE_ON);
CLEAR_PERI_REG_MASK(DPORT_PRO_ICACHE_TAG_POWER_CTRL_REG, DPORT_PRO_ICACHE_TAG_MEM_FORCE_ON);
//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);
}
// cancel BIAS force pu
// CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_CORE_FORCE_PU);
// CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_I2C_FORCE_PU);
CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_FORCE_NOSLEEP);
// bias follow 8M
// SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_CORE_FOLW_8M);
// SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_I2C_FOLW_8M);
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_SLEEP_FOLW_8M);
// 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);
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SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BB_I2C_FORCE_PU);
}
//cancel RTC REG force PU
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PWC_FORCE_PU);
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);
}
//cancel digital pu force
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_MEM_FORCE_PU);
/* 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
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if (cfg.cpu_waiti_clk_gate){
CLEAR_PERI_REG_MASK(DPORT_CPU_PER_CONF_REG, DPORT_CPU_WAIT_MODE_FORCE_ON);
}
else{
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*/
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#ifdef CONFIG_CHIP_IS_ESP32
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PAD_FORCE_UNHOLD);
CLEAR_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PAD_FORCE_NOISO);
#endif
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);
#ifdef CONFIG_CHIP_IS_ESP32
SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_PAD_AUTOHOLD_EN);
SET_PERI_REG_MASK(RTC_CNTL_PWC_REG, RTC_CNTL_DG_PAD_AUTOHOLD_EN);
#endif
}
}
#endif
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rtc_vddsdio_config_t rtc_vddsdio_get_config(void)
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{
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;
}
// TODO: rtc_vddsdio_get_config: implement efuse part for esp32s2beta - IDF-749
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#if 0
uint32_t efuse_reg = REG_READ(EFUSE_BLK0_RDATA4_REG);
if (efuse_reg & EFUSE_RD_SDIO_FORCE) {
// Get configuration from EFUSE
result.force = 0;
result.enable = (efuse_reg & EFUSE_RD_XPD_SDIO_REG_M) >> EFUSE_RD_XPD_SDIO_REG_S;
result.tieh = (efuse_reg & EFUSE_RD_SDIO_TIEH_M) >> EFUSE_RD_SDIO_TIEH_S;
//DREFH/M/L eFuse are used for EFUSE_ADC_VREF instead. Therefore tuning
//will only be available on older chips that don't have EFUSE_ADC_VREF
if(REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG ,EFUSE_RD_BLK3_PART_RESERVE) == 0){
//BLK3_PART_RESERVE indicates the presence of EFUSE_ADC_VREF
// in this case, DREFH/M/L are also set from EFUSE
result.drefh = (efuse_reg & EFUSE_RD_SDIO_DREFH_M) >> EFUSE_RD_SDIO_DREFH_S;
result.drefm = (efuse_reg & EFUSE_RD_SDIO_DREFM_M) >> EFUSE_RD_SDIO_DREFM_S;
result.drefl = (efuse_reg & EFUSE_RD_SDIO_DREFL_M) >> EFUSE_RD_SDIO_DREFL_S;
}
return result;
}
#endif
// Otherwise, VDD_SDIO is controlled by bootstrapping pin
uint32_t strap_reg = REG_READ(GPIO_STRAP_REG);
result.force = 0;
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);
}