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esp-idf/components/esp32s2beta/spiram_psram.c
Wangjialin fad639f0d4 feature(psram): update psram initialization. 
1. use spi functions in rom
2. remove unnecessary GPIO configurations.
3. remove unnecessary dummy settings.
4. enable dummy out function
5. flash and psram have independent timing setting registers.
6. no need to set 1.9v for LDO in 80Mhz
7. set IO driver ability to 1 by default.
8. no need to use GPIO matrix on esp32s2, IO MUX is recommended
9. enable spi clock mode and IO mode settings
2020-01-16 17:41:31 +08:00

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/*
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 "esp32s2beta/rom/ets_sys.h"
#include "esp32s2beta/rom/spi_flash.h"
#include "esp32s2beta/rom/opi_flash.h"
#include "esp32s2beta/rom/gpio.h"
#include "esp32s2beta/rom/cache.h"
#include "esp32s2beta/rom/efuse.h"
#include "soc/dport_reg.h"
#include "soc/efuse_periph.h"
#include "soc/spi_caps.h"
#include "soc/io_mux_reg.h"
#include "soc/apb_ctrl_reg.h"
#include "soc/gpio_sig_map.h"
#include "soc/efuse_reg.h"
#include "soc/soc.h"
#include "driver/gpio.h"
#include "driver/spi_common_internal.h"
#include "driver/spi_common.h"
#include "driver/periph_ctrl.h"
#include "bootloader_common.h"
#if CONFIG_SPIRAM
#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
// ID
#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
#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 FLASH_CLK_IO SPI_CLK_GPIO_NUM
#define FLASH_CS_IO SPI_CS0_GPIO_NUM
// PSRAM clock and cs IO should be configured based on hardware design.
#define PSRAM_CLK_IO CONFIG_DEFAULT_PSRAM_CLK_IO // Default value is 30
#define PSRAM_CS_IO CONFIG_DEFAULT_PSRAM_CS_IO // Default value is 26
#define PSRAM_SPIQ_SD0_IO SPI_Q_GPIO_NUM
#define PSRAM_SPID_SD1_IO SPI_D_GPIO_NUM
#define PSRAM_SPIWP_SD3_IO SPI_WP_GPIO_NUM
#define PSRAM_SPIHD_SD2_IO SPI_HD_GPIO_NUM
#define CS_PSRAM_SEL SPI_MEM_CS1_DIS_M
#define CS_FLASH_SEL SPI_MEM_CS0_DIS_M
#define PSRAM_IO_MATRIX_DUMMY_20M 0
#define PSRAM_IO_MATRIX_DUMMY_40M 0
#define PSRAM_IO_MATRIX_DUMMY_80M 0
#define _SPI_CACHE_PORT 0
#define _SPI_FLASH_PORT 1
#define _SPI_80M_CLK_DIV 1
#define _SPI_40M_CLK_DIV 2
#define _SPI_20M_CLK_DIV 4
typedef enum {
PSRAM_CLK_MODE_NORM = 0, /*!< Normal SPI mode */
PSRAM_CLK_MODE_A1C, /*!< ONE extra clock cycles after CS is set high level */
PSRAM_CLK_MODE_A2C, /*!< Two extra clock cycles after CS is set high level */
PSRAM_CLK_MODE_ALON, /*!< clock always on */
PSRAM_CLK_MODE_MAX,
} psram_clk_mode_t;
typedef enum {
PSRAM_EID_SIZE_16MBITS = 0,
PSRAM_EID_SIZE_32MBITS = 1,
PSRAM_EID_SIZE_64MBITS = 2,
} psram_eid_size_t;
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_IO_CONF_DEFAULT() { \
.flash_clk_io = FLASH_CLK_IO, \
.flash_cs_io = FLASH_CS_IO, \
.psram_clk_io = PSRAM_CLK_IO, \
.psram_cs_io = PSRAM_CS_IO, \
.psram_spiq_sd0_io = PSRAM_SPIQ_SD0_IO, \
.psram_spid_sd1_io = PSRAM_SPID_SD1_IO, \
.psram_spiwp_sd3_io = PSRAM_SPIWP_SD3_IO, \
.psram_spihd_sd2_io = PSRAM_SPIHD_SD2_IO, \
}
//static const char* TAG = "psram";
typedef enum {
PSRAM_SPI_1 = 0x1,
/* PSRAM_SPI_2, */
/* PSRAM_SPI_3, */
PSRAM_SPI_MAX ,
} psram_spi_num_t;
typedef enum {
PSRAM_CMD_QPI,
PSRAM_CMD_SPI,
} psram_cmd_mode_t;
typedef esp_rom_spi_cmd_t psram_cmd_t;
static uint32_t s_psram_id = 0;
static void IRAM_ATTR psram_cache_init(psram_cache_mode_t psram_cache_mode, psram_vaddr_mode_t vaddrmode);
extern void esp_rom_spi_set_op_mode(int spi_num, esp_rom_spiflash_read_mode_t mode);
static void psram_set_op_mode(int spi_num, psram_cmd_mode_t mode)
{
if (mode == PSRAM_CMD_QPI) {
esp_rom_spi_set_op_mode(spi_num, ESP_ROM_SPIFLASH_QIO_MODE);
SET_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FCMD_QUAD_M);
} else if (mode == PSRAM_CMD_SPI) {
esp_rom_spi_set_op_mode(spi_num, ESP_ROM_SPIFLASH_SLOWRD_MODE);
}
}
static void _psram_exec_cmd(int spi_num,
uint32_t cmd, int cmd_bit_len,
uint32_t addr, int addr_bit_len,
int dummy_bits,
uint8_t* mosi_data, int mosi_bit_len,
uint8_t* miso_data, int miso_bit_len)
{
esp_rom_spi_cmd_t conf;
uint32_t _addr = addr;
conf.addr = &_addr;
conf.addrBitLen = addr_bit_len;
conf.cmd = cmd;
conf.cmdBitLen = cmd_bit_len;
conf.dummyBitLen = dummy_bits; // There is a hardware approach on chip723
conf.txData = (uint32_t*) mosi_data;
conf.txDataBitLen = mosi_bit_len;
conf.rxData = (uint32_t*) miso_data;
conf.rxDataBitLen = miso_bit_len;
esp_rom_spi_cmd_config(spi_num, &conf);
}
void psram_exec_cmd(int spi_num, psram_cmd_mode_t mode,
uint32_t cmd, int cmd_bit_len,
uint32_t addr, int addr_bit_len,
int dummy_bits,
uint8_t* mosi_data, int mosi_bit_len,
uint8_t* miso_data, int miso_bit_len,
uint32_t cs_mask,
bool is_write_erase_operation)
{
uint32_t backup_usr = READ_PERI_REG(SPI_MEM_USER_REG(spi_num));
uint32_t backup_usr1 = READ_PERI_REG(SPI_MEM_USER1_REG(spi_num));
uint32_t backup_usr2 = READ_PERI_REG(SPI_MEM_USER2_REG(spi_num));
uint32_t backup_ctrl = READ_PERI_REG(SPI_MEM_CTRL_REG(spi_num));
psram_set_op_mode(spi_num, mode);
_psram_exec_cmd(spi_num, cmd, cmd_bit_len, addr, addr_bit_len,
dummy_bits, mosi_data, mosi_bit_len, miso_data, miso_bit_len);
esp_rom_spi_cmd_start(spi_num, miso_data, miso_bit_len / 8, cs_mask, is_write_erase_operation);
WRITE_PERI_REG(SPI_MEM_USER_REG(spi_num), backup_usr);
WRITE_PERI_REG(SPI_MEM_USER1_REG(spi_num), backup_usr1);
WRITE_PERI_REG(SPI_MEM_USER2_REG(spi_num), backup_usr2);
WRITE_PERI_REG(SPI_MEM_CTRL_REG(spi_num), backup_ctrl);
}
//exit QPI mode(set back to SPI mode)
static void psram_disable_qio_mode(int spi_num)
{
psram_exec_cmd(spi_num, PSRAM_CMD_QPI,
PSRAM_EXIT_QMODE, 8, /* command and command bit len*/
0, 0, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
NULL, 0, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
}
//switch psram burst length(32 bytes or 1024 bytes)
//datasheet says it should be 1024 bytes by default
static void psram_set_wrap_burst_length(int spi_num, psram_cmd_mode_t mode)
{
psram_exec_cmd(spi_num, mode,
PSRAM_SET_BURST_LEN, 8, /* command and command bit len*/
0, 0, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
NULL, 0, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
}
//send reset command to psram, in spi mode
static void psram_reset_mode(int spi_num)
{
psram_exec_cmd(spi_num, PSRAM_CMD_SPI,
PSRAM_RESET_EN, 8, /* command and command bit len*/
0, 0, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
NULL, 0, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
psram_exec_cmd(spi_num, PSRAM_CMD_SPI,
PSRAM_RESET, 8, /* command and command bit len*/
0, 0, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
NULL, 0, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
}
esp_err_t psram_enable_wrap(uint32_t wrap_size)
{
static int current_wrap_size = 0;
if (current_wrap_size == wrap_size) {
return ESP_OK;
}
switch (wrap_size) {
case 32:
case 0:
psram_set_wrap_burst_length(PSRAM_SPI_1, PSRAM_CMD_QPI);
current_wrap_size = wrap_size;
return ESP_OK;
case 16:
case 64:
default:
return ESP_FAIL;
}
}
bool psram_support_wrap_size(uint32_t wrap_size)
{
switch (wrap_size) {
case 0:
case 32:
return true;
case 16:
case 64:
default:
return false;
}
}
//read psram id
static void psram_read_id(uint32_t* dev_id)
{
int spi_num = PSRAM_SPI_1;
psram_disable_qio_mode(spi_num);
psram_exec_cmd(spi_num, PSRAM_CMD_SPI,
PSRAM_DEVICE_ID, 8, /* command and command bit len*/
0, 24, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
(uint8_t*) dev_id, 24, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
}
//enter QPI mode
static void IRAM_ATTR psram_enable_qio_mode(int spi_num)
{
psram_exec_cmd(spi_num, PSRAM_CMD_SPI,
PSRAM_ENTER_QMODE, 8, /* command and command bit len*/
0, 0, /* address and address bit len*/
0, /* dummy bit len */
NULL, 0, /* tx data and tx bit len*/
NULL, 0, /* rx data and rx bit len*/
CS_PSRAM_SEL, /* cs bit mask*/
false); /* whether is program/erase operation */
}
static void psram_set_spi1_cmd_cs_timing(psram_clk_mode_t clk_mode)
{
if (clk_mode == PSRAM_CLK_MODE_NORM) {
// SPI1 Flash Operation port
SET_PERI_REG_BITS(SPI_MEM_CTRL2_REG(_SPI_FLASH_PORT), SPI_MEM_CS_HOLD_TIME_V, 1, SPI_MEM_CS_HOLD_TIME_S);
SET_PERI_REG_BITS(SPI_MEM_CTRL2_REG(_SPI_FLASH_PORT), SPI_MEM_CS_SETUP_TIME_V, 0, SPI_MEM_CS_SETUP_TIME_S);
SET_PERI_REG_MASK(SPI_MEM_USER_REG(_SPI_FLASH_PORT), SPI_MEM_CS_HOLD_M | SPI_MEM_CS_SETUP_M);
} else {
SET_PERI_REG_MASK(SPI_MEM_USER_REG(_SPI_FLASH_PORT), SPI_MEM_CS_HOLD_M | SPI_MEM_CS_SETUP_M);
}
}
static void psram_set_spi0_cache_cs_timing(psram_clk_mode_t clk_mode)
{
if (clk_mode == PSRAM_CLK_MODE_NORM) {
// SPI0 SRAM Cache port
SET_PERI_REG_BITS(SPI_MEM_SPI_SMEM_AC_REG(_SPI_CACHE_PORT), SPI_MEM_SPI_SMEM_CS_HOLD_TIME_V, 1, SPI_MEM_SPI_SMEM_CS_HOLD_TIME_S);
SET_PERI_REG_BITS(SPI_MEM_SPI_SMEM_AC_REG(_SPI_CACHE_PORT), SPI_MEM_SPI_SMEM_CS_SETUP_TIME_V, 0, SPI_MEM_SPI_SMEM_CS_SETUP_TIME_S);
SET_PERI_REG_MASK(SPI_MEM_SPI_SMEM_AC_REG(_SPI_CACHE_PORT), SPI_MEM_SPI_SMEM_CS_HOLD_M | SPI_MEM_SPI_SMEM_CS_SETUP_M);
// SPI0 Flash Cache port
SET_PERI_REG_BITS(SPI_MEM_CTRL2_REG(_SPI_CACHE_PORT), SPI_MEM_CS_HOLD_TIME_V, 0, SPI_MEM_CS_HOLD_TIME_S);
SET_PERI_REG_BITS(SPI_MEM_CTRL2_REG(_SPI_CACHE_PORT), SPI_MEM_CS_SETUP_TIME_V, 0, SPI_MEM_CS_SETUP_TIME_S);
SET_PERI_REG_MASK(SPI_MEM_USER_REG(_SPI_CACHE_PORT), SPI_MEM_CS_HOLD_M | SPI_MEM_CS_SETUP_M);
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(_SPI_CACHE_PORT), SPI_CS_HOLD_M | SPI_CS_SETUP_M);
}
}
//psram gpio init , different working frequency we have different solutions
static void IRAM_ATTR psram_gpio_config(psram_cache_mode_t mode)
{
psram_io_t psram_io = PSRAM_IO_CONF_DEFAULT();
const uint32_t spiconfig = ets_efuse_get_spiconfig();
if (spiconfig == EFUSE_SPICONFIG_SPI_DEFAULTS) {
/* FLASH pins(except wp / hd) are all configured via IO_MUX in rom. */
} else {
// FLASH pins are all configured via GPIO matrix in ROM.
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);
psram_io.psram_spiwp_sd3_io = ets_efuse_get_wp_pad();
}
#if CONFIG_ESPTOOLPY_FLASHMODE_QIO || CONFIG_FLASHMODE_QOUT
// WP/HD already configured in bootloader.
psram_io.psram_spiwp_sd3_io = (psram_io.psram_spiwp_sd3_io <= MAX_PAD_GPIO_NUM ? psram_io.psram_spiwp_sd3_io : CONFIG_BOOTLOADER_SPI_WP_PIN);
#else
psram_io.psram_spiwp_sd3_io = (psram_io.psram_spiwp_sd3_io <= MAX_PAD_GPIO_NUM ? psram_io.psram_spiwp_sd3_io : CONFIG_SPIRAM_SPIWP_SD3_PIN);
esp_rom_spiflash_select_qio_pins(psram_io.psram_spiwp_sd3_io, spiconfig);
#endif
}
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;
}
return PSRAM_SIZE_MAX;
}
//used in UT only
bool psram_is_32mbit_ver0(void)
{
return PSRAM_IS_32MBIT_VER0(s_psram_id);
}
static void psram_set_clk_mode(int spi_num, psram_clk_mode_t clk_mode)
{
if (spi_num == _SPI_CACHE_PORT) {
REG_SET_FIELD(SPI_MEM_SRAM_CMD_REG(0), SPI_MEM_SCLK_MODE, clk_mode);
} else if (spi_num == _SPI_FLASH_PORT) {
REG_SET_FIELD(SPI_MEM_CTRL1_REG(1), SPI_MEM_CLK_MODE, clk_mode);
}
}
/*
* 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
{
assert(mode < PSRAM_CACHE_MAX && "we don't support any other mode for now.");
// GPIO related settings
psram_gpio_config(mode);
/* SPI1: set spi1 clk mode, in order to send commands on SPI1 */
/* SPI1: set cs timing(hold time) in order to send commands on SPI1 */
psram_set_clk_mode(_SPI_FLASH_PORT, PSRAM_CLK_MODE_A1C);
psram_set_spi1_cmd_cs_timing(PSRAM_CLK_MODE_A1C);
psram_read_id(&s_psram_id);
if (!PSRAM_IS_VALID(s_psram_id)) {
return ESP_FAIL;
}
psram_clk_mode_t clk_mode = PSRAM_CLK_MODE_MAX;
if (psram_is_32mbit_ver0()) {
clk_mode = PSRAM_CLK_MODE_A1C;
// SPI1: keep clock mode and cs timing for spi1
} else {
// For other psram, we don't need any extra clock cycles after cs get back to high level
clk_mode = PSRAM_CLK_MODE_NORM;
// SPI1: set clock mode and cs timing to normal mode
psram_set_clk_mode(_SPI_FLASH_PORT, PSRAM_CLK_MODE_NORM);
psram_set_spi1_cmd_cs_timing(PSRAM_CLK_MODE_NORM);
}
/* SPI1: send psram reset command */
/* SPI1: send QPI enable command */
psram_reset_mode(PSRAM_SPI_1);
psram_enable_qio_mode(PSRAM_SPI_1);
// after sending commands, set spi1 clock mode and cs timing to normal mode.
// since all the operations are sent via SPI0 Cache
/* SPI1: set clock mode to normal mode. */
/* SPI1: set cs timing to normal */
psram_set_clk_mode(_SPI_FLASH_PORT, PSRAM_CLK_MODE_NORM);
psram_set_spi1_cmd_cs_timing(PSRAM_CLK_MODE_NORM);
/* SPI0: set spi0 clock mode */
/* SPI0: set spi0 flash/cache cs timing */
psram_set_clk_mode(_SPI_CACHE_PORT, clk_mode);
psram_set_spi0_cache_cs_timing(clk_mode);
// SPI0: init SPI commands for Cache
psram_cache_init(mode, vaddrmode);
return ESP_OK;
}
static void IRAM_ATTR psram_clock_set(int spi_num, int8_t freqdiv)
{
uint32_t freqbits;
if (1 >= freqdiv) {
WRITE_PERI_REG(SPI_MEM_SRAM_CLK_REG(spi_num), SPI_MEM_SCLK_EQU_SYSCLK);
} else {
freqbits = (((freqdiv-1)<<SPI_MEM_SCLKCNT_N_S)) | (((freqdiv/2-1)<<SPI_MEM_SCLKCNT_H_S)) | ((freqdiv-1)<<SPI_MEM_SCLKCNT_L_S);
WRITE_PERI_REG(SPI_MEM_SRAM_CLK_REG(spi_num), freqbits);
}
}
//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)
{
int extra_dummy = 0;
switch (psram_cache_mode) {
case PSRAM_CACHE_S80M:
psram_clock_set(0, 1);
extra_dummy = PSRAM_IO_MATRIX_DUMMY_80M;
break;
case PSRAM_CACHE_S40M:
psram_clock_set(0, 2);
extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M;
break;
case PSRAM_CACHE_S26M:
psram_clock_set(0, 3);
extra_dummy = PSRAM_IO_MATRIX_DUMMY_20M;
break;
case PSRAM_CACHE_S20M:
psram_clock_set(0, 4);
extra_dummy = PSRAM_IO_MATRIX_DUMMY_20M;
break;
default:
psram_clock_set(0, 2);
break;
}
CLEAR_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_SRAM_DIO_M); //disable dio mode for cache command
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_SRAM_QIO_M); //enable qio mode for cache command
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_CACHE_SRAM_USR_RCMD_M); //enable cache read command
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_CACHE_SRAM_USR_WCMD_M); //enable cache write command
SET_PERI_REG_BITS(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_SRAM_ADDR_BITLEN_V, 23, SPI_MEM_SRAM_ADDR_BITLEN_S); //write address for cache command.
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_RD_SRAM_DUMMY_M); //enable cache read dummy
//config sram cache r/w command
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN, 7,
SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE, PSRAM_QUAD_WRITE,
SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 7,
SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_V, PSRAM_FAST_READ_QUAD,
SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0x0b
SET_PERI_REG_BITS(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_SRAM_RDUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy,
SPI_MEM_SRAM_RDUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy,80m--+2dummy
#if !CONFIG_FREERTOS_UNICORE
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);
}
#endif
Cache_Resume_DCache(0);
CLEAR_PERI_REG_MASK(SPI_MEM_MISC_REG(0), SPI_MEM_CS1_DIS_M); //ENABLE SPI0 CS1 TO PSRAM(CS0--FLASH; CS1--SRAM)
}
#endif // CONFIG_SPIRAM
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