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flash: stm32l4/g4: force load option bytes after write

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After writing option bytes, force them to be loaded. Failing to perform
this step means the values are never applied and not actually written
to non-volatile memory.

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2025-01-05 11:37:08 +10:00 committed by Benjamin Cabé
parent 59b1bb2059
commit a5643a4664
2 changed files with 8 additions and 2 deletions
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5
drivers/flash/flash_stm32g4x.c
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@ -285,7 +285,10 @@ int flash_stm32_option_bytes_write(const struct device *dev, uint32_t mask,
return rc;
}
return 0;
/* Force the option byte loading */
regs->CR |= FLASH_CR_OBL_LAUNCH;
return flash_stm32_wait_flash_idle(dev);
}
uint32_t flash_stm32_option_bytes_read(const struct device *dev)

5
drivers/flash/flash_stm32l4x.c
View file

@ -276,7 +276,10 @@ int flash_stm32_option_bytes_write(const struct device *dev, uint32_t mask,
return rc;
}
return 0;
/* Force the option byte loading */
regs->CR |= FLASH_CR_OBL_LAUNCH;
return flash_stm32_wait_flash_idle(dev);
}
uint32_t flash_stm32_option_bytes_read(const struct device *dev)