blob: 36fc5bf830690ac8c0b49d55a23eb19b0635cf29 [file] [log] [blame]
/*
* Copyright 2021 Basalte bv
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT nxp_imx_flexspi_s27ks0641
#include <zephyr/logging/log.h>
#include <zephyr/sys/util.h>
#include "memc_mcux_flexspi.h"
/*
* NOTE: If CONFIG_FLASH_MCUX_FLEXSPI_XIP is selected, Any external functions
* called while interacting with the flexspi MUST be relocated to SRAM or ITCM
* at runtime, so that the chip does not access the flexspi to read program
* instructions while it is being written to
*/
#if defined(CONFIG_FLASH_MCUX_FLEXSPI_XIP) && (CONFIG_MEMC_LOG_LEVEL > 0)
#warning "Enabling memc driver logging and XIP mode simultaneously can cause \
read-while-write hazards. This configuration is not recommended."
#endif
LOG_MODULE_REGISTER(memc_flexspi_s27ks0641, CONFIG_MEMC_LOG_LEVEL);
enum {
READ_DATA,
WRITE_DATA,
READ_REG,
WRITE_REG,
};
struct memc_flexspi_s27ks0641_config {
flexspi_port_t port;
flexspi_device_config_t config;
};
/* Device variables used in critical sections should be in this structure */
struct memc_flexspi_s27ks0641_data {
const struct device *controller;
};
static const uint32_t memc_flexspi_s27ks0641_lut[][4] = {
/* Read Data */
[READ_DATA] = {
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_DDR, kFLEXSPI_8PAD, 0xA0,
kFLEXSPI_Command_RADDR_DDR, kFLEXSPI_8PAD, 0x18),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_CADDR_DDR, kFLEXSPI_8PAD, 0x10,
kFLEXSPI_Command_DUMMY_RWDS_DDR, kFLEXSPI_8PAD, 0x06),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_READ_DDR, kFLEXSPI_8PAD, 0x04,
kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0x00),
},
/* Write Data */
[WRITE_DATA] = {
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_DDR, kFLEXSPI_8PAD, 0x20,
kFLEXSPI_Command_RADDR_DDR, kFLEXSPI_8PAD, 0x18),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_CADDR_DDR, kFLEXSPI_8PAD, 0x10,
kFLEXSPI_Command_DUMMY_RWDS_DDR, kFLEXSPI_8PAD, 0x06),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_WRITE_DDR, kFLEXSPI_8PAD, 0x04,
kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0x00),
},
/* Read Register */
[READ_REG] = {
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_DDR, kFLEXSPI_8PAD, 0xE0,
kFLEXSPI_Command_RADDR_DDR, kFLEXSPI_8PAD, 0x18),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_CADDR_DDR, kFLEXSPI_8PAD, 0x10,
kFLEXSPI_Command_DUMMY_RWDS_DDR, kFLEXSPI_8PAD, 0x06),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_READ_DDR, kFLEXSPI_8PAD, 0x04,
kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0x00),
},
/* Write Register */
[WRITE_REG] = {
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_DDR, kFLEXSPI_8PAD, 0x60,
kFLEXSPI_Command_RADDR_DDR, kFLEXSPI_8PAD, 0x18),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_CADDR_DDR, kFLEXSPI_8PAD, 0x10,
kFLEXSPI_Command_DUMMY_RWDS_DDR, kFLEXSPI_8PAD, 0x06),
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_WRITE_DDR, kFLEXSPI_8PAD, 0x04,
kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0x00),
},
};
static int memc_flexspi_s27ks0641_get_vendor_id(const struct device *dev,
uint16_t *vendor_id)
{
const struct memc_flexspi_s27ks0641_config *config = dev->config;
struct memc_flexspi_s27ks0641_data *data = dev->data;
uint32_t buffer = 0;
int ret;
flexspi_transfer_t transfer = {
.deviceAddress = 0,
.port = config->port,
.cmdType = kFLEXSPI_Read,
.SeqNumber = 1,
.seqIndex = READ_REG,
.data = &buffer,
.dataSize = 4,
};
LOG_DBG("Reading id");
ret = memc_flexspi_transfer(data->controller, &transfer);
*vendor_id = buffer & 0xffff;
return ret;
}
static int memc_flexspi_s27ks0641_init(const struct device *dev)
{
const struct memc_flexspi_s27ks0641_config *config = dev->config;
struct memc_flexspi_s27ks0641_data *data = dev->data;
uint16_t vendor_id;
if (!device_is_ready(data->controller)) {
LOG_ERR("Controller device not ready");
return -ENODEV;
}
if (memc_flexspi_set_device_config(data->controller, &config->config,
(const uint32_t *) memc_flexspi_s27ks0641_lut,
sizeof(memc_flexspi_s27ks0641_lut) / MEMC_FLEXSPI_CMD_SIZE,
config->port)) {
LOG_ERR("Could not set device configuration");
return -EINVAL;
}
memc_flexspi_reset(data->controller);
if (memc_flexspi_s27ks0641_get_vendor_id(dev, &vendor_id)) {
LOG_ERR("Could not read vendor id");
return -EIO;
}
LOG_DBG("Vendor id: 0x%0x", vendor_id);
return 0;
}
#define CONCAT3(x, y, z) x ## y ## z
#define CS_INTERVAL_UNIT(unit) \
CONCAT3(kFLEXSPI_CsIntervalUnit, unit, SckCycle)
#define AHB_WRITE_WAIT_UNIT(unit) \
CONCAT3(kFLEXSPI_AhbWriteWaitUnit, unit, AhbCycle)
#define MEMC_FLEXSPI_DEVICE_CONFIG(n) \
{ \
.flexspiRootClk = MHZ(332), \
.isSck2Enabled = false, \
.flashSize = DT_INST_PROP(n, size) / 8 / KB(1), \
.CSIntervalUnit = \
CS_INTERVAL_UNIT( \
DT_INST_PROP(n, cs_interval_unit)), \
.CSInterval = DT_INST_PROP(n, cs_interval), \
.CSHoldTime = DT_INST_PROP(n, cs_hold_time), \
.CSSetupTime = DT_INST_PROP(n, cs_setup_time), \
.dataValidTime = DT_INST_PROP(n, data_valid_time), \
.columnspace = DT_INST_PROP(n, column_space), \
.enableWordAddress = DT_INST_PROP(n, word_addressable), \
.AWRSeqIndex = WRITE_DATA, \
.AWRSeqNumber = 1, \
.ARDSeqIndex = READ_DATA, \
.ARDSeqNumber = 1, \
.AHBWriteWaitUnit = \
AHB_WRITE_WAIT_UNIT( \
DT_INST_PROP(n, ahb_write_wait_unit)), \
.AHBWriteWaitInterval = \
DT_INST_PROP(n, ahb_write_wait_interval), \
.enableWriteMask = true, \
} \
#define MEMC_FLEXSPI_S27KS0641(n) \
static const struct memc_flexspi_s27ks0641_config \
memc_flexspi_s27ks0641_config_##n = { \
.port = DT_INST_REG_ADDR(n), \
.config = MEMC_FLEXSPI_DEVICE_CONFIG(n), \
}; \
\
static struct memc_flexspi_s27ks0641_data \
memc_flexspi_s27ks0641_data_##n = { \
.controller = DEVICE_DT_GET(DT_INST_BUS(n)), \
}; \
\
DEVICE_DT_INST_DEFINE(n, \
memc_flexspi_s27ks0641_init, \
NULL, \
&memc_flexspi_s27ks0641_data_##n, \
&memc_flexspi_s27ks0641_config_##n, \
POST_KERNEL, \
CONFIG_MEMC_INIT_PRIORITY, \
NULL);
DT_INST_FOREACH_STATUS_OKAY(MEMC_FLEXSPI_S27KS0641)