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drivers: flash: stm32 ospi flash driver for stm32l4plus mcus

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Adaptation of the ospi nor flash driver for stm32l4 plus
where the peripheral is slighty different.
Configure the OSPIM peripheral for mcu embeddingthis peripheral
in front their octospi instances.
Add LOG for read access command like for write access.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2022-11-16 15:41:05 +01:00 • committed by Fabio Baltieri
commit acd582e456
1 changed files with 11 additions and 4 deletions
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15
drivers/flash/flash_stm32_ospi.c
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@ -196,6 +196,8 @@ static int ospi_read_access(const struct device *dev, OSPI_RegularCmdTypeDef *cm
struct flash_stm32_ospi_data *dev_data = dev->data;
HAL_StatusTypeDef hal_ret;
LOG_DBG("Instruction 0x%x", cmd->Instruction);
cmd->NbData = size;
dev_data->cmd_status = 0;
@ -1937,7 +1939,9 @@ static int flash_stm32_ospi_init(const struct device *dev)
dev_data->hospi.Init.ChipSelectHighTime = 2;
dev_data->hospi.Init.FreeRunningClock = HAL_OSPI_FREERUNCLK_DISABLE;
dev_data->hospi.Init.ClockMode = HAL_OSPI_CLOCK_MODE_0;
#if defined(OCTOSPI_DCR2_WRAPSIZE)
dev_data->hospi.Init.WrapSize = HAL_OSPI_WRAP_NOT_SUPPORTED;
#endif /* OCTOSPI_DCR2_WRAPSIZE */
dev_data->hospi.Init.SampleShifting = HAL_OSPI_SAMPLE_SHIFTING_NONE;
/* STR mode else Macronix for DTR mode */
if (dev_cfg->data_rate == OSPI_DTR_TRANSFER) {
@ -1949,14 +1953,16 @@ static int flash_stm32_ospi_init(const struct device *dev)
}
dev_data->hospi.Init.ChipSelectBoundary = 0;
dev_data->hospi.Init.DelayBlockBypass = HAL_OSPI_DELAY_BLOCK_USED;
#if defined(OCTOSPI_DCR4_REFRESH)
dev_data->hospi.Init.Refresh = 0;
#endif /* OCTOSPI_DCR4_REFRESH */
if (HAL_OSPI_Init(&dev_data->hospi) != HAL_OK) {
LOG_ERR("OSPI Init failed");
return -EIO;
}
#if defined(CONFIG_SOC_SERIES_STM32U5X)
#if defined(OCTOSPIM)
/* OCTOSPI I/O manager init Function */
OSPIM_CfgTypeDef ospi_mgr_cfg = {0};
@ -1973,15 +1979,15 @@ static int flash_stm32_ospi_init(const struct device *dev)
ospi_mgr_cfg.IOLowPort = HAL_OSPIM_IOPORT_2_LOW;
ospi_mgr_cfg.IOHighPort = HAL_OSPIM_IOPORT_2_HIGH;
}
#if defined(OCTOSPIM_CR_MUXEN)
ospi_mgr_cfg.Req2AckTime = 1;
#endif /* OCTOSPIM_CR_MUXEN */
if (HAL_OSPIM_Config(&dev_data->hospi, &ospi_mgr_cfg,
HAL_OSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) {
LOG_ERR("OSPI M config failed");
return -EIO;
}
#if defined(CONFIG_SOC_SERIES_STM32U5X)
/* OCTOSPI2 delay block init Function */
HAL_OSPI_DLYB_CfgTypeDef ospi_delay_block_cfg = {0};
@ -1992,6 +1998,7 @@ static int flash_stm32_ospi_init(const struct device *dev)
return -EIO;
}
#endif /* CONFIG_SOC_SERIES_STM32U5X */
#endif /* OCTOSPIM */
/* Reset NOR flash memory : still with the SPI/STR config for the NOR */
if (stm32_ospi_mem_reset(dev) != 0) {