/* Driver bits for PSRAM chips (at the moment only the ESP-PSRAM32 chip). */ // Copyright 2013-2017 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 "sdkconfig.h" #include "string.h" #include "esp_attr.h" #include "esp_err.h" #include "esp_types.h" #include "esp_log.h" #include "spiram_psram.h" #include "esp32/rom/ets_sys.h" #include "esp32/rom/spi_flash.h" #include "esp32/rom/gpio.h" #include "esp32/rom/cache.h" #include "esp32/rom/efuse.h" #include "soc/dport_reg.h" #include "soc/efuse_periph.h" #include "soc/spi_caps.h" #include "driver/gpio.h" #include "driver/spi_common.h" #include "driver/periph_ctrl.h" #include "bootloader_common.h" #if CONFIG_ESP32_SPIRAM_SUPPORT #include "soc/rtc.h" //Commands for PSRAM chip #define PSRAM_READ 0x03 #define PSRAM_FAST_READ 0x0B #define PSRAM_FAST_READ_DUMMY 0x3 #define PSRAM_FAST_READ_QUAD 0xEB #define PSRAM_FAST_READ_QUAD_DUMMY 0x5 #define PSRAM_WRITE 0x02 #define PSRAM_QUAD_WRITE 0x38 #define PSRAM_ENTER_QMODE 0x35 #define PSRAM_EXIT_QMODE 0xF5 #define PSRAM_RESET_EN 0x66 #define PSRAM_RESET 0x99 #define PSRAM_SET_BURST_LEN 0xC0 #define PSRAM_DEVICE_ID 0x9F typedef enum { PSRAM_CLK_MODE_NORM = 0, /*!< Normal SPI mode */ PSRAM_CLK_MODE_DCLK = 1, /*!< Two extra clock cycles after CS is set high level */ } psram_clk_mode_t; #define PSRAM_ID_KGD_M 0xff #define PSRAM_ID_KGD_S 8 #define PSRAM_ID_KGD 0x5d #define PSRAM_ID_EID_M 0xff #define PSRAM_ID_EID_S 16 // Use the [7:5](bit7~bit5) of EID to distinguish the psram size: // // BIT7 | BIT6 | BIT5 | SIZE(MBIT) // ------------------------------------- // 0 | 0 | 0 | 16 // 0 | 0 | 1 | 32 // 0 | 1 | 0 | 64 #define PSRAM_EID_SIZE_M 0x07 #define PSRAM_EID_SIZE_S 5 typedef enum { PSRAM_EID_SIZE_16MBITS = 0, PSRAM_EID_SIZE_32MBITS = 1, PSRAM_EID_SIZE_64MBITS = 2, } psram_eid_size_t; #define PSRAM_KGD(id) (((id) >> PSRAM_ID_KGD_S) & PSRAM_ID_KGD_M) #define PSRAM_EID(id) (((id) >> PSRAM_ID_EID_S) & PSRAM_ID_EID_M) #define PSRAM_SIZE_ID(id) ((PSRAM_EID(id) >> PSRAM_EID_SIZE_S) & PSRAM_EID_SIZE_M) #define PSRAM_IS_VALID(id) (PSRAM_KGD(id) == PSRAM_ID_KGD) // For the old version 32Mbit psram, using the spicial driver */ #define PSRAM_IS_32MBIT_VER0(id) (PSRAM_EID(id) == 0x20) #define PSRAM_IS_64MBIT_TRIAL(id) (PSRAM_EID(id) == 0x26) // IO-pins for PSRAM. // WARNING: PSRAM shares all but the CS and CLK pins with the flash, so these defines // hardcode the flash pins as well, making this code incompatible with either a setup // that has the flash on non-standard pins or ESP32s with built-in flash. #define PSRAM_SPIQ_SD0_IO 7 #define PSRAM_SPID_SD1_IO 8 #define PSRAM_SPIWP_SD3_IO 10 #define PSRAM_SPIHD_SD2_IO 9 #define FLASH_HSPI_CLK_IO 14 #define FLASH_HSPI_CS_IO 15 #define PSRAM_HSPI_SPIQ_SD0_IO 12 #define PSRAM_HSPI_SPID_SD1_IO 13 #define PSRAM_HSPI_SPIWP_SD3_IO 2 #define PSRAM_HSPI_SPIHD_SD2_IO 4 // PSRAM clock and cs IO should be configured based on hardware design. // For ESP32-WROVER or ESP32-WROVER-B module, the clock IO is IO17, the cs IO is IO16, // they are the default value for these two configs. #define D0WD_PSRAM_CLK_IO CONFIG_D0WD_PSRAM_CLK_IO // Default value is 17 #define D0WD_PSRAM_CS_IO CONFIG_D0WD_PSRAM_CS_IO // Default value is 16 #define D2WD_PSRAM_CLK_IO CONFIG_D2WD_PSRAM_CLK_IO // Default value is 9 #define D2WD_PSRAM_CS_IO CONFIG_D2WD_PSRAM_CS_IO // Default value is 10 // For ESP32-PICO chip, the psram share clock with flash. The flash clock pin is fixed, which is IO6. #define PICO_PSRAM_CLK_IO 6 #define PICO_PSRAM_CS_IO CONFIG_PICO_PSRAM_CS_IO // Default value is 10 typedef struct { uint8_t flash_clk_io; uint8_t flash_cs_io; uint8_t psram_clk_io; uint8_t psram_cs_io; uint8_t psram_spiq_sd0_io; uint8_t psram_spid_sd1_io; uint8_t psram_spiwp_sd3_io; uint8_t psram_spihd_sd2_io; } psram_io_t; #define PSRAM_INTERNAL_IO_28 28 #define PSRAM_INTERNAL_IO_29 29 #define PSRAM_IO_MATRIX_DUMMY_40M ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_40M #define PSRAM_IO_MATRIX_DUMMY_80M ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_80M #define _SPI_CACHE_PORT 0 #define _SPI_FLASH_PORT 1 #define _SPI_80M_CLK_DIV 1 #define _SPI_40M_CLK_DIV 2 //For 4MB PSRAM, we need one more SPI host, select which one to use by kconfig #ifdef CONFIG_SPIRAM_OCCUPY_HSPI_HOST #define PSRAM_SPI_MODULE PERIPH_HSPI_MODULE #define PSRAM_SPI_HOST HSPI_HOST #define PSRAM_CLK_SIGNAL HSPICLK_OUT_IDX #define PSRAM_SPI_NUM PSRAM_SPI_2 #define PSRAM_SPICLKEN DPORT_SPI2_CLK_EN #elif defined CONFIG_SPIRAM_OCCUPY_VSPI_HOST #define PSRAM_SPI_MODULE PERIPH_VSPI_MODULE #define PSRAM_SPI_HOST VSPI_HOST #define PSRAM_CLK_SIGNAL VSPICLK_OUT_IDX #define PSRAM_SPI_NUM PSRAM_SPI_3 #define PSRAM_SPICLKEN DPORT_SPI3_CLK_EN #else //set to SPI avoid HSPI and VSPI being used #define PSRAM_SPI_MODULE PERIPH_SPI_MODULE #define PSRAM_SPI_HOST SPI_HOST #define PSRAM_CLK_SIGNAL SPICLK_OUT_IDX #define PSRAM_SPI_NUM PSRAM_SPI_1 #define PSRAM_SPICLKEN DPORT_SPI01_CLK_EN #endif static const char* TAG = "psram"; typedef enum { PSRAM_SPI_1 = 0x1, PSRAM_SPI_2, PSRAM_SPI_3, PSRAM_SPI_MAX , } psram_spi_num_t; static psram_cache_mode_t s_psram_mode = PSRAM_CACHE_MAX; static psram_clk_mode_t s_clk_mode = PSRAM_CLK_MODE_DCLK; static uint32_t s_psram_id = 0; /* dummy_len_plus values defined in ROM for SPI flash configuration */ extern uint8_t g_rom_spiflash_dummy_len_plus[]; static int extra_dummy = 0; typedef enum { PSRAM_CMD_QPI, PSRAM_CMD_SPI, } psram_cmd_mode_t; typedef struct { uint16_t cmd; /*!< Command value */ uint16_t cmdBitLen; /*!< Command byte length*/ uint32_t *addr; /*!< Point to address value*/ uint16_t addrBitLen; /*!< Address byte length*/ uint32_t *txData; /*!< Point to send data buffer*/ uint16_t txDataBitLen; /*!< Send data byte length.*/ uint32_t *rxData; /*!< Point to recevie data buffer*/ uint16_t rxDataBitLen; /*!< Recevie Data byte length.*/ uint32_t dummyBitLen; } psram_cmd_t; static void IRAM_ATTR psram_cache_init(psram_cache_mode_t psram_cache_mode, psram_vaddr_mode_t vaddrmode); static void psram_clear_spi_fifo(psram_spi_num_t spi_num) { int i; for (i = 0; i < 16; i++) { WRITE_PERI_REG(SPI_W0_REG(spi_num)+i*4, 0); } } //set basic SPI write mode static void psram_set_basic_write_mode(psram_spi_num_t spi_num) { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QIO); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DIO); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QUAD); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DUAL); } //set QPI write mode static void psram_set_qio_write_mode(psram_spi_num_t spi_num) { SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QIO); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DIO); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QUAD); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DUAL); } //set QPI read mode static void psram_set_qio_read_mode(psram_spi_num_t spi_num) { SET_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QIO); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QUAD); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DUAL); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DIO); } //set SPI read mode static void psram_set_basic_read_mode(psram_spi_num_t spi_num) { CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QIO); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QUAD); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DUAL); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DIO); } //start sending cmd/addr and optionally, receiving data static void IRAM_ATTR psram_cmd_recv_start(psram_spi_num_t spi_num, uint32_t* pRxData, uint16_t rxByteLen, psram_cmd_mode_t cmd_mode) { //get cs1 CLEAR_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS1_DIS_M); SET_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS0_DIS_M); uint32_t mode_backup = (READ_PERI_REG(SPI_USER_REG(spi_num)) >> SPI_FWRITE_DUAL_S) & 0xf; uint32_t rd_mode_backup = READ_PERI_REG(SPI_CTRL_REG(spi_num)) & (SPI_FREAD_DIO_M | SPI_FREAD_DUAL_M | SPI_FREAD_QUAD_M | SPI_FREAD_QIO_M); if (cmd_mode == PSRAM_CMD_SPI) { psram_set_basic_write_mode(spi_num); psram_set_basic_read_mode(spi_num); } else if (cmd_mode == PSRAM_CMD_QPI) { psram_set_qio_write_mode(spi_num); psram_set_qio_read_mode(spi_num); } //Wait for SPI0 to idle while ( READ_PERI_REG(SPI_EXT2_REG(0)) != 0); DPORT_SET_PERI_REG_MASK(DPORT_HOST_INF_SEL_REG, 1 << 14); // Start send data SET_PERI_REG_MASK(SPI_CMD_REG(spi_num), SPI_USR); while ((READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR)); DPORT_CLEAR_PERI_REG_MASK(DPORT_HOST_INF_SEL_REG, 1 << 14); //recover spi mode SET_PERI_REG_BITS(SPI_USER_REG(spi_num), (pRxData?SPI_FWRITE_DUAL_M:0xf), mode_backup, SPI_FWRITE_DUAL_S); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), (SPI_FREAD_DIO_M|SPI_FREAD_DUAL_M|SPI_FREAD_QUAD_M|SPI_FREAD_QIO_M)); SET_PERI_REG_MASK(SPI_CTRL_REG(spi_num), rd_mode_backup); //return cs to cs0 SET_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS1_DIS_M); CLEAR_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS0_DIS_M); if (pRxData) { int idx = 0; // Read data out do { *pRxData++ = READ_PERI_REG(SPI_W0_REG(spi_num) + (idx << 2)); } while (++idx < ((rxByteLen / 4) + ((rxByteLen % 4) ? 1 : 0))); } } static uint32_t backup_usr[3]; static uint32_t backup_usr1[3]; static uint32_t backup_usr2[3]; //setup spi command/addr/data/dummy in user mode static int psram_cmd_config(psram_spi_num_t spi_num, psram_cmd_t* pInData) { while (READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR); backup_usr[spi_num]=READ_PERI_REG(SPI_USER_REG(spi_num)); backup_usr1[spi_num]=READ_PERI_REG(SPI_USER1_REG(spi_num)); backup_usr2[spi_num]=READ_PERI_REG(SPI_USER2_REG(spi_num)); // Set command by user. if (pInData->cmdBitLen != 0) { // Max command length 16 bits. SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_BITLEN, pInData->cmdBitLen - 1, SPI_USR_COMMAND_BITLEN_S); // Enable command SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_COMMAND); // Load command,bit15-0 is cmd value. SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_VALUE, pInData->cmd, SPI_USR_COMMAND_VALUE_S); } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_COMMAND); SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_BITLEN, 0, SPI_USR_COMMAND_BITLEN_S); } // Set Address by user. if (pInData->addrBitLen != 0) { SET_PERI_REG_BITS(SPI_USER1_REG(spi_num), SPI_USR_ADDR_BITLEN, (pInData->addrBitLen - 1), SPI_USR_ADDR_BITLEN_S); // Enable address SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_ADDR); // Set address WRITE_PERI_REG(SPI_ADDR_REG(spi_num), *pInData->addr); } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_ADDR); SET_PERI_REG_BITS(SPI_USER1_REG(spi_num), SPI_USR_ADDR_BITLEN, 0, SPI_USR_ADDR_BITLEN_S); } // Set data by user. uint32_t* p_tx_val = pInData->txData; if (pInData->txDataBitLen != 0) { // Enable MOSI SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MOSI); // Load send buffer int len = (pInData->txDataBitLen + 31) / 32; if (p_tx_val != NULL) { memcpy((void*)SPI_W0_REG(spi_num), p_tx_val, len * 4); } // Set data send buffer length.Max data length 64 bytes. SET_PERI_REG_BITS(SPI_MOSI_DLEN_REG(spi_num), SPI_USR_MOSI_DBITLEN, (pInData->txDataBitLen - 1), SPI_USR_MOSI_DBITLEN_S); } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MOSI); SET_PERI_REG_BITS(SPI_MOSI_DLEN_REG(spi_num), SPI_USR_MOSI_DBITLEN, 0, SPI_USR_MOSI_DBITLEN_S); } // Set rx data by user. if (pInData->rxDataBitLen != 0) { // Enable MOSI SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MISO); // Set data send buffer length.Max data length 64 bytes. SET_PERI_REG_BITS(SPI_MISO_DLEN_REG(spi_num), SPI_USR_MISO_DBITLEN, (pInData->rxDataBitLen - 1), SPI_USR_MISO_DBITLEN_S); } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MISO); SET_PERI_REG_BITS(SPI_MISO_DLEN_REG(spi_num), SPI_USR_MISO_DBITLEN, 0, SPI_USR_MISO_DBITLEN_S); } if (pInData->dummyBitLen != 0) { SET_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_DUMMY); // dummy en SET_PERI_REG_BITS(SPI_USER1_REG(PSRAM_SPI_1), SPI_USR_DUMMY_CYCLELEN_V, pInData->dummyBitLen - 1, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_DUMMY); // dummy en SET_PERI_REG_BITS(SPI_USER1_REG(PSRAM_SPI_1), SPI_USR_DUMMY_CYCLELEN_V, 0, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY } return 0; } static void psram_cmd_end(int spi_num) { while (READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR); WRITE_PERI_REG(SPI_USER_REG(spi_num), backup_usr[spi_num]); WRITE_PERI_REG(SPI_USER1_REG(spi_num), backup_usr1[spi_num]); WRITE_PERI_REG(SPI_USER2_REG(spi_num), backup_usr2[spi_num]); } //exit QPI mode(set back to SPI mode) static void psram_disable_qio_mode(psram_spi_num_t spi_num) { psram_cmd_t ps_cmd; uint32_t cmd_exit_qpi; cmd_exit_qpi = PSRAM_EXIT_QMODE; ps_cmd.txDataBitLen = 8; if (s_clk_mode == PSRAM_CLK_MODE_DCLK) { switch (s_psram_mode) { case PSRAM_CACHE_F80M_S80M: break; case PSRAM_CACHE_F80M_S40M: case PSRAM_CACHE_F40M_S40M: default: cmd_exit_qpi = PSRAM_EXIT_QMODE << 8; ps_cmd.txDataBitLen = 16; break; } } ps_cmd.txData = &cmd_exit_qpi; ps_cmd.cmd = 0; ps_cmd.cmdBitLen = 0; ps_cmd.addr = 0; ps_cmd.addrBitLen = 0; ps_cmd.rxData = NULL; ps_cmd.rxDataBitLen = 0; ps_cmd.dummyBitLen = 0; psram_cmd_config(spi_num, &ps_cmd); psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_QPI); psram_cmd_end(spi_num); } //read psram id static void psram_read_id(uint32_t* dev_id) { psram_spi_num_t spi_num = PSRAM_SPI_1; psram_disable_qio_mode(spi_num); uint32_t dummy_bits = 0 + extra_dummy; psram_cmd_t ps_cmd; uint32_t addr = 0; ps_cmd.addrBitLen = 3 * 8; ps_cmd.cmd = PSRAM_DEVICE_ID; ps_cmd.cmdBitLen = 8; if (s_clk_mode == PSRAM_CLK_MODE_DCLK) { switch (s_psram_mode) { case PSRAM_CACHE_F80M_S80M: break; case PSRAM_CACHE_F80M_S40M: case PSRAM_CACHE_F40M_S40M: default: ps_cmd.cmdBitLen = 2; //this two bits is used to delay 2 clock cycle ps_cmd.cmd = 0; addr = (PSRAM_DEVICE_ID << 24) | 0; ps_cmd.addrBitLen = 4 * 8; break; } } ps_cmd.addr = &addr; ps_cmd.txDataBitLen = 0; ps_cmd.txData = NULL; ps_cmd.rxDataBitLen = 4 * 8; ps_cmd.rxData = dev_id; ps_cmd.dummyBitLen = dummy_bits; psram_cmd_config(spi_num, &ps_cmd); psram_clear_spi_fifo(spi_num); psram_cmd_recv_start(spi_num, ps_cmd.rxData, ps_cmd.rxDataBitLen / 8, PSRAM_CMD_SPI); psram_cmd_end(spi_num); } //enter QPI mode static esp_err_t IRAM_ATTR psram_enable_qio_mode(psram_spi_num_t spi_num) { psram_cmd_t ps_cmd; uint32_t addr = (PSRAM_ENTER_QMODE << 24) | 0; ps_cmd.cmdBitLen = 0; if (s_clk_mode == PSRAM_CLK_MODE_DCLK) { switch (s_psram_mode) { case PSRAM_CACHE_F80M_S80M: break; case PSRAM_CACHE_F80M_S40M: case PSRAM_CACHE_F40M_S40M: default: ps_cmd.cmdBitLen = 2; break; } } ps_cmd.cmd = 0; ps_cmd.addr = &addr; ps_cmd.addrBitLen = 8; ps_cmd.txData = NULL; ps_cmd.txDataBitLen = 0; ps_cmd.rxData = NULL; ps_cmd.rxDataBitLen = 0; ps_cmd.dummyBitLen = 0; psram_cmd_config(spi_num, &ps_cmd); psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI); psram_cmd_end(spi_num); return ESP_OK; } void psram_set_cs_timing(psram_spi_num_t spi_num, psram_clk_mode_t clk_mode) { if (clk_mode == PSRAM_CLK_MODE_NORM) { SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CS_HOLD_M | SPI_CS_SETUP_M); // Set cs time. SET_PERI_REG_BITS(SPI_CTRL2_REG(spi_num), SPI_HOLD_TIME_V, 1, SPI_HOLD_TIME_S); SET_PERI_REG_BITS(SPI_CTRL2_REG(spi_num), SPI_SETUP_TIME_V, 0, SPI_SETUP_TIME_S); } else { CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CS_HOLD_M | SPI_CS_SETUP_M); } } //spi param init for psram void IRAM_ATTR psram_spi_init(psram_spi_num_t spi_num, psram_cache_mode_t mode) { CLEAR_PERI_REG_MASK(SPI_SLAVE_REG(spi_num), SPI_TRANS_DONE << 5); // SPI_CPOL & SPI_CPHA CLEAR_PERI_REG_MASK(SPI_PIN_REG(spi_num), SPI_CK_IDLE_EDGE); CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CK_OUT_EDGE); // SPI bit order CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_WR_BIT_ORDER); CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_RD_BIT_ORDER); // SPI bit order CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_DOUTDIN); // May be not must to do. WRITE_PERI_REG(SPI_USER1_REG(spi_num), 0); // SPI mode type CLEAR_PERI_REG_MASK(SPI_SLAVE_REG(spi_num), SPI_SLAVE_MODE); memset((void*)SPI_W0_REG(spi_num), 0, 16 * 4); psram_set_cs_timing(spi_num, s_clk_mode); } //psram gpio init , different working frequency we have different solutions static void IRAM_ATTR psram_gpio_config(psram_io_t *psram_io, psram_cache_mode_t mode) { int spi_cache_dummy = 0; uint32_t rd_mode_reg = READ_PERI_REG(SPI_CTRL_REG(0)); if (rd_mode_reg & SPI_FREAD_QIO_M) { spi_cache_dummy = SPI0_R_QIO_DUMMY_CYCLELEN; } else if (rd_mode_reg & SPI_FREAD_DIO_M) { spi_cache_dummy = SPI0_R_DIO_DUMMY_CYCLELEN; SET_PERI_REG_BITS(SPI_USER1_REG(0), SPI_USR_ADDR_BITLEN_V, SPI0_R_DIO_ADDR_BITSLEN, SPI_USR_ADDR_BITLEN_S); } else if (rd_mode_reg & (SPI_FREAD_QUAD_M | SPI_FREAD_DUAL_M)) { spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN; } else { spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN; } switch (mode) { case PSRAM_CACHE_F80M_S40M: extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M; g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_80M; g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_40M; SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_CACHE_PORT); esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_FLASH_PORT); //set drive ability for clock SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 2, FUN_DRV_S); break; case PSRAM_CACHE_F80M_S80M: extra_dummy = PSRAM_IO_MATRIX_DUMMY_80M; g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_80M; g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_80M; SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_CACHE_PORT); esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_FLASH_PORT); //set drive ability for clock SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 3, FUN_DRV_S); break; case PSRAM_CACHE_F40M_S40M: extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M; g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_40M; g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_40M; SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_40M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_CACHE_PORT); esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_FLASH_PORT); //set drive ability for clock SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 2, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 2, FUN_DRV_S); break; default: break; } SET_PERI_REG_MASK(SPI_USER_REG(0), SPI_USR_DUMMY); // dummy enable // In bootloader, all the signals are already configured, // We keep the following code in case the bootloader is some older version. gpio_matrix_out(psram_io->flash_cs_io, SPICS0_OUT_IDX, 0, 0); gpio_matrix_out(psram_io->psram_cs_io, SPICS1_OUT_IDX, 0, 0); gpio_matrix_out(psram_io->psram_spiq_sd0_io, SPIQ_OUT_IDX, 0, 0); gpio_matrix_in(psram_io->psram_spiq_sd0_io, SPIQ_IN_IDX, 0); gpio_matrix_out(psram_io->psram_spid_sd1_io, SPID_OUT_IDX, 0, 0); gpio_matrix_in(psram_io->psram_spid_sd1_io, SPID_IN_IDX, 0); gpio_matrix_out(psram_io->psram_spiwp_sd3_io, SPIWP_OUT_IDX, 0, 0); gpio_matrix_in(psram_io->psram_spiwp_sd3_io, SPIWP_IN_IDX, 0); gpio_matrix_out(psram_io->psram_spihd_sd2_io, SPIHD_OUT_IDX, 0, 0); gpio_matrix_in(psram_io->psram_spihd_sd2_io, SPIHD_IN_IDX, 0); //select pin function gpio if ((psram_io->flash_clk_io == SPI_IOMUX_PIN_NUM_CLK) && (psram_io->flash_clk_io != psram_io->psram_clk_io)) { //flash clock signal should come from IO MUX. PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUNC_SD_CLK_SPICLK); } else { //flash clock signal should come from GPIO matrix. PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], PIN_FUNC_GPIO); } PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->flash_cs_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_cs_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_spiq_sd0_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_spid_sd1_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_spihd_sd2_io], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[psram_io->psram_spiwp_sd3_io], PIN_FUNC_GPIO); uint32_t flash_id = g_rom_flashchip.device_id; if (flash_id == FLASH_ID_GD25LQ32C) { // Set drive ability for 1.8v flash in 80Mhz. SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_cs_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_cs_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spiq_sd0_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spid_sd1_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spihd_sd2_io], FUN_DRV_V, 3, FUN_DRV_S); SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spiwp_sd3_io], FUN_DRV_V, 3, FUN_DRV_S); } } psram_size_t psram_get_size(void) { if ((PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_64MBITS) || PSRAM_IS_64MBIT_TRIAL(s_psram_id)) { return PSRAM_SIZE_64MBITS; } else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_32MBITS) { return PSRAM_SIZE_32MBITS; } else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_16MBITS) { return PSRAM_SIZE_16MBITS; } else { return PSRAM_SIZE_MAX; } } /* * Psram mode init will overwrite original flash speed mode, so that it is possible to change psram and flash speed after OTA. * Flash read mode(QIO/QOUT/DIO/DOUT) will not be changed in app bin. It is decided by bootloader, OTA can not change this mode. */ esp_err_t IRAM_ATTR psram_enable(psram_cache_mode_t mode, psram_vaddr_mode_t vaddrmode) //psram init { psram_io_t psram_io={0}; uint32_t chip_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG); uint32_t pkg_ver = chip_ver & 0x7; if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5) { ESP_EARLY_LOGI(TAG, "This chip is ESP32-D2WD"); rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config(); if (cfg.tieh != RTC_VDDSDIO_TIEH_1_8V) { ESP_EARLY_LOGE(TAG, "VDDSDIO is not 1.8V"); return ESP_FAIL; } psram_io.psram_clk_io = D2WD_PSRAM_CLK_IO; psram_io.psram_cs_io = D2WD_PSRAM_CS_IO; } else if ((pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2) || (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4)) { ESP_EARLY_LOGI(TAG, "This chip is ESP32-PICO"); rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config(); if (cfg.tieh != RTC_VDDSDIO_TIEH_3_3V) { ESP_EARLY_LOGE(TAG, "VDDSDIO is not 3.3V"); return ESP_FAIL; } s_clk_mode = PSRAM_CLK_MODE_NORM; psram_io.psram_clk_io = PICO_PSRAM_CLK_IO; psram_io.psram_cs_io = PICO_PSRAM_CS_IO; } else if ((pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D0WDQ6) || (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D0WDQ5)){ ESP_EARLY_LOGI(TAG, "This chip is ESP32-D0WD"); psram_io.psram_clk_io = D0WD_PSRAM_CLK_IO; psram_io.psram_cs_io = D0WD_PSRAM_CS_IO; } else { ESP_EARLY_LOGE(TAG, "Not a valid or known package id: %d", pkg_ver); abort(); } const uint32_t spiconfig = ets_efuse_get_spiconfig(); if (spiconfig == EFUSE_SPICONFIG_SPI_DEFAULTS) { psram_io.flash_clk_io = SPI_IOMUX_PIN_NUM_CLK; psram_io.flash_cs_io = SPI_IOMUX_PIN_NUM_CS; psram_io.psram_spiq_sd0_io = PSRAM_SPIQ_SD0_IO; psram_io.psram_spid_sd1_io = PSRAM_SPID_SD1_IO; psram_io.psram_spiwp_sd3_io = PSRAM_SPIWP_SD3_IO; psram_io.psram_spihd_sd2_io = PSRAM_SPIHD_SD2_IO; } else if (spiconfig == EFUSE_SPICONFIG_HSPI_DEFAULTS) { psram_io.flash_clk_io = FLASH_HSPI_CLK_IO; psram_io.flash_cs_io = FLASH_HSPI_CS_IO; psram_io.psram_spiq_sd0_io = PSRAM_HSPI_SPIQ_SD0_IO; psram_io.psram_spid_sd1_io = PSRAM_HSPI_SPID_SD1_IO; psram_io.psram_spiwp_sd3_io = PSRAM_HSPI_SPIWP_SD3_IO; psram_io.psram_spihd_sd2_io = PSRAM_HSPI_SPIHD_SD2_IO; } else { psram_io.flash_clk_io = EFUSE_SPICONFIG_RET_SPICLK(spiconfig); psram_io.flash_cs_io = EFUSE_SPICONFIG_RET_SPICS0(spiconfig); psram_io.psram_spiq_sd0_io = EFUSE_SPICONFIG_RET_SPIQ(spiconfig); psram_io.psram_spid_sd1_io = EFUSE_SPICONFIG_RET_SPID(spiconfig); psram_io.psram_spihd_sd2_io = EFUSE_SPICONFIG_RET_SPIHD(spiconfig); // If flash mode is set to QIO or QOUT, the WP pin is equal the value configured in bootloader. // If flash mode is set to DIO or DOUT, the WP pin should config it via menuconfig. #if CONFIG_ESPTOOLPY_FLASHMODE_QIO || CONFIG_FLASHMODE_QOUT psram_io.psram_spiwp_sd3_io = CONFIG_BOOTLOADER_SPI_WP_PIN; #else psram_io.psram_spiwp_sd3_io = CONFIG_SPIRAM_SPIWP_SD3_PIN; #endif } assert(mode < PSRAM_CACHE_MAX && "we don't support any other mode for now."); s_psram_mode = mode; WRITE_PERI_REG(SPI_EXT3_REG(0), 0x1); CLEAR_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_PREP_HOLD_M); psram_spi_init(PSRAM_SPI_1, mode); switch (mode) { case PSRAM_CACHE_F80M_S80M: gpio_matrix_out(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0); break; case PSRAM_CACHE_F80M_S40M: case PSRAM_CACHE_F40M_S40M: default: if (s_clk_mode == PSRAM_CLK_MODE_DCLK) { /* We need to delay CLK to the PSRAM with respect to the clock signal as output by the SPI peripheral. We do this by routing it signal to signal 224/225, which are used as a loopback; the extra run through the GPIO matrix causes the delay. We use GPIO20 (which is not in any package but has pad logic in silicon) as a temporary pad for this. So the signal path is: SPI CLK --> GPIO28 --> signal224(in then out) --> internal GPIO29 --> signal225(in then out) --> GPIO17(PSRAM CLK) */ gpio_matrix_out(PSRAM_INTERNAL_IO_28, SPICLK_OUT_IDX, 0, 0); gpio_matrix_in(PSRAM_INTERNAL_IO_28, SIG_IN_FUNC224_IDX, 0); gpio_matrix_out(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC224_IDX, 0, 0); gpio_matrix_in(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC225_IDX, 0); gpio_matrix_out(psram_io.psram_clk_io, SIG_IN_FUNC225_IDX, 0, 0); } else { gpio_matrix_out(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0); } break; } // Rise VDDSIO for 1.8V psram. bootloader_common_vddsdio_configure(); // GPIO related settings psram_gpio_config(&psram_io, mode); psram_read_id(&s_psram_id); if (!PSRAM_IS_VALID(s_psram_id)) { return ESP_FAIL; } if (PSRAM_IS_32MBIT_VER0(s_psram_id)) { s_clk_mode = PSRAM_CLK_MODE_DCLK; if (mode == PSRAM_CACHE_F80M_S80M) { /* note: If the third mode(80Mhz+80Mhz) is enabled for 32MBit 1V8 psram, one of HSPI/VSPI port will be occupied by the system (according to kconfig). Application code should never touch HSPI/VSPI hardware in this case. We try to stop applications from doing this using the drivers by claiming the port for ourselves */ periph_module_enable(PSRAM_SPI_MODULE); bool r=spicommon_periph_claim(PSRAM_SPI_HOST, "psram"); if (!r) { return ESP_ERR_INVALID_STATE; } gpio_matrix_out(psram_io.psram_clk_io, PSRAM_CLK_SIGNAL, 0, 0); //use spi3 clock,but use spi1 data/cs wires //We get a solid 80MHz clock from SPI3 by setting it up, starting a transaction, waiting until it //is in progress, then cutting the clock (but not the reset!) to that peripheral. WRITE_PERI_REG(SPI_ADDR_REG(PSRAM_SPI_NUM), 32 << 24); SET_PERI_REG_MASK(SPI_CMD_REG(PSRAM_SPI_NUM), SPI_FLASH_READ_M); uint32_t spi_status; while (1) { spi_status = READ_PERI_REG(SPI_EXT2_REG(PSRAM_SPI_NUM)); if (spi_status != 0 && spi_status != 1) { DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, PSRAM_SPICLKEN); break; } } } } else { // For other psram, we don't need any extra clock cycles after cs get back to high level s_clk_mode = PSRAM_CLK_MODE_NORM; gpio_matrix_out(PSRAM_INTERNAL_IO_28, SIG_GPIO_OUT_IDX, 0, 0); gpio_matrix_out(PSRAM_INTERNAL_IO_29, SIG_GPIO_OUT_IDX, 0, 0); gpio_matrix_out(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0); } // Update cs timing according to psram driving method. psram_set_cs_timing(PSRAM_SPI_1, s_clk_mode); psram_set_cs_timing(_SPI_CACHE_PORT, s_clk_mode); psram_enable_qio_mode(PSRAM_SPI_1); psram_cache_init(mode, vaddrmode); return ESP_OK; } //register initialization for sram cache params and r/w commands static void IRAM_ATTR psram_cache_init(psram_cache_mode_t psram_cache_mode, psram_vaddr_mode_t vaddrmode) { switch (psram_cache_mode) { case PSRAM_CACHE_F80M_S80M: CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk,80+40; CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div , ONLY IF SPI/SRAM@ DIFFERENT SPEED,JUST FOR SPI0. FLASH DIV 2+SRAM DIV4 break; case PSRAM_CACHE_F80M_S40M: CLEAR_PERI_REG_MASK(SPI_CLOCK_REG(0), SPI_CLK_EQU_SYSCLK_M); SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKDIV_PRE_V, 0, SPI_CLKDIV_PRE_S); SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_N, 1, SPI_CLKCNT_N_S); SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_H, 0, SPI_CLKCNT_H_S); SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_L, 1, SPI_CLKCNT_L_S); SET_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div , ONLY IF SPI/SRAM@ DIFFERENT SPEED,JUST FOR SPI0. break; case PSRAM_CACHE_F40M_S40M: default: CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div break; } CLEAR_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_SRAM_DIO_M); //disable dio mode for cache command SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_SRAM_QIO_M); //enable qio mode for cache command SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_CACHE_SRAM_USR_RCMD_M); //enable cache read command SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_CACHE_SRAM_USR_WCMD_M); //enable cache write command SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_ADDR_BITLEN_V, 23, SPI_SRAM_ADDR_BITLEN_S); //write address for cache command. SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_RD_SRAM_DUMMY_M); //enable cache read dummy //config sram cache r/w command SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 7, SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_S); SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_VALUE_V, PSRAM_FAST_READ_QUAD, SPI_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0xEB SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_BITLEN, 7, SPI_CACHE_SRAM_USR_WR_CMD_BITLEN_S); SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_VALUE, PSRAM_QUAD_WRITE, SPI_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38 SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_DUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy, SPI_SRAM_DUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy; 80m--+2dummy switch (psram_cache_mode) { case PSRAM_CACHE_F80M_S80M: //in this mode , no delay is needed break; case PSRAM_CACHE_F80M_S40M: //if sram is @40M, need 2 cycles of delay case PSRAM_CACHE_F40M_S40M: default: if (s_clk_mode == PSRAM_CLK_MODE_DCLK) { SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 15, SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_S); //read command length, 2 bytes(1byte for delay),sending in qio mode in cache SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_VALUE_V, ((PSRAM_FAST_READ_QUAD) << 8), SPI_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0xEB, read command value,(0x00 for delay,0xeb for cmd) SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_BITLEN, 15, SPI_CACHE_SRAM_USR_WR_CMD_BITLEN_S); //write command length,2 bytes(1byte for delay,send in qio mode in cache) SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_VALUE, ((PSRAM_QUAD_WRITE) << 8), SPI_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38, write command value,(0x00 for delay) SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_DUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy, SPI_SRAM_DUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy; 80m--+2dummy } break; } DPORT_CLEAR_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_HL|DPORT_PRO_DRAM_SPLIT); DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_HL|DPORT_APP_DRAM_SPLIT); if (vaddrmode == PSRAM_VADDR_MODE_LOWHIGH) { DPORT_SET_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_HL); DPORT_SET_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_HL); } else if (vaddrmode == PSRAM_VADDR_MODE_EVENODD) { DPORT_SET_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_SPLIT); DPORT_SET_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_SPLIT); } DPORT_CLEAR_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MASK_DRAM1|DPORT_PRO_CACHE_MASK_OPSDRAM); //use Dram1 to visit ext sram. //cache page mode : 1 -->16k 4 -->2k 0-->32k,(accord with the settings in cache_sram_mmu_set) DPORT_SET_PERI_REG_BITS(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CMMU_SRAM_PAGE_MODE, 0, DPORT_PRO_CMMU_SRAM_PAGE_MODE_S); DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CACHE_MASK_DRAM1|DPORT_APP_CACHE_MASK_OPSDRAM); //use Dram1 to visit ext sram. //cache page mode : 1 -->16k 4 -->2k 0-->32k,(accord with the settings in cache_sram_mmu_set) DPORT_SET_PERI_REG_BITS(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CMMU_SRAM_PAGE_MODE, 0, DPORT_APP_CMMU_SRAM_PAGE_MODE_S); CLEAR_PERI_REG_MASK(SPI_PIN_REG(0), SPI_CS1_DIS_M); //ENABLE SPI0 CS1 TO PSRAM(CS0--FLASH; CS1--SRAM) } #endif // CONFIG_ESP32_SPIRAM_SUPPORT