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drivers: flash: stm32 qspi flash driver with unprotect command 

Add the write_unprotect command to the stm32 qspi flash driver
to un protect flash before any write operation to the external quad-NOR

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2024-06-27 09:50:38 +02:00 committed by Alberto Escolar
parent 76740ae1d1
commit ff34d575bc
1 changed files with 28 additions and 0 deletions
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28
drivers/flash/flash_stm32_qspi.c
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@ -352,6 +352,27 @@ static int qspi_read_jedec_id(const struct device *dev, uint8_t *id)
} }
#endif /* CONFIG_FLASH_JESD216_API */ #endif /* CONFIG_FLASH_JESD216_API */
static int qspi_write_unprotect(const struct device *dev)
{
int ret = 0;
QSPI_CommandTypeDef cmd_unprotect = {
.Instruction = SPI_NOR_CMD_ULBPR,
.InstructionMode = QSPI_INSTRUCTION_1_LINE,
};
if (IS_ENABLED(DT_INST_PROP(0, requires_ulbpr))) {
ret = qspi_send_cmd(dev, &cmd_write_en);
if (ret != 0) {
return ret;
}
ret = qspi_send_cmd(dev, &cmd_unprotect);
}
return ret;
}
/* /*
* Read Serial Flash Discovery Parameter * Read Serial Flash Discovery Parameter
*/ */
@ -1498,6 +1519,13 @@ static int flash_stm32_qspi_init(const struct device *dev)
} }
#endif /* CONFIG_FLASH_PAGE_LAYOUT */ #endif /* CONFIG_FLASH_PAGE_LAYOUT */
ret = qspi_write_unprotect(dev);
if (ret != 0) {
LOG_ERR("write unprotect failed: %d", ret);
return -ENODEV;
}
LOG_DBG("Write Un-protected");
#ifdef CONFIG_STM32_MEMMAP #ifdef CONFIG_STM32_MEMMAP
#if DT_PROP(DT_NODELABEL(quadspi), dual_flash) && defined(QUADSPI_CR_DFM) #if DT_PROP(DT_NODELABEL(quadspi), dual_flash) && defined(QUADSPI_CR_DFM)
/* /*