2017-12-19 17:14 GMT+01:00 Bartosz Golaszewski <brgl@xxxxxxxx>: > 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. > > This series adds support for the write-protect pin split into two > parts. The first patch extends the relevant binding document, while > the second modifies the at24 code to pull the write-protect GPIO > low (if present) during write operations. > > Bartosz Golaszewski (2): > dt-bindings: at24: new optional property - write-protect-gpios > eeprom: at24: add support for the write-protect pin > > Documentation/devicetree/bindings/eeprom/at24.txt | 4 ++++ > drivers/misc/eeprom/at24.c | 12 ++++++++++++ > 2 files changed, 16 insertions(+) > > -- > 2.15.1 > Superseded by v2. Thanks, Bartosz -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
