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drivers: flash: fix hw write protect before sw

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This change sets write-protect pin disabled BEFORE SW write-protect disable
and  write-protect pin enabled AFTER SW write-protect enable.

Signed-off-by: J.P. Hutchins <jp@intercreate.io>
This commit is contained in:
J.P. Hutchins 2023-08-07 11:40:48 -07:00 • committed by Carles Cufí
commit d7313388c9
1 changed files with 8 additions and 2 deletions
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10
drivers/flash/spi_nor.c
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@ -848,8 +848,8 @@ static int spi_nor_write_protection_set(const struct device *dev,
int ret; int ret;
#if ANY_INST_HAS_WP_GPIOS #if ANY_INST_HAS_WP_GPIOS
if (DEV_CFG(dev)->wp) { if (DEV_CFG(dev)->wp && write_protect == false) {
gpio_pin_set_dt(DEV_CFG(dev)->wp, write_protect); gpio_pin_set_dt(DEV_CFG(dev)->wp, 0);
} }
#endif #endif
@ -862,6 +862,12 @@ static int spi_nor_write_protection_set(const struct device *dev,
ret = spi_nor_cmd_write(dev, SPI_NOR_CMD_ULBPR); ret = spi_nor_cmd_write(dev, SPI_NOR_CMD_ULBPR);
} }
#if ANY_INST_HAS_WP_GPIOS
if (DEV_CFG(dev)->wp && write_protect == true) {
gpio_pin_set_dt(DEV_CFG(dev)->wp, 1);
}
#endif
return ret; return ret;
} }