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6ce261e87f
AT24 EEPROMs have a write-protect pin, which - when pulled high - inhibits writes to the upper quadrant of memory (although it has been observed that on some chips it disables writing to the entire memory range). On some boards, this pin is connected to a GPIO and pulled high by default, which forces the user to manually change its state before writing. On linux this means that we either need to hog the line all the time, or set the GPIO value before writing from outside of the at24 driver. Make the driver check if the write-protect GPIO was defined in the device tree and pull it low whenever writing to the EEPROM. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> |
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| .. | ||
| at24.c | ||
| at25.c | ||
| digsy_mtc_eeprom.c | ||
| eeprom_93cx6.c | ||
| eeprom_93xx46.c | ||
| eeprom.c | ||
| idt_89hpesx.c | ||
| Kconfig | ||
| Makefile | ||
| max6875.c | ||