The write-protect pin handling looks like a standard property that could benefit other users if available in the core nvmem framework. Instead of modifying all the drivers to check this pin, make the nvmem subsystem check if the write-protect GPIO being passed through the nvmem_config or defined in the device tree and pull it low whenever writing to the memory. This patchset: - adds support for the write-protect pin split into two parts. The first patch modifies modifies the relevant binding document, while the second modifies the nvmem code to pull the write-protect GPIO low (if present) during write operations. - removes support for the write-protect pin split into two parts. The first patch modifies the relevant binding document to remove the wp-gpio, while the second removes the relevant code in the at24 driver. Khouloud Touil (4): dt-bindings: nvmem: new optional property write-protect-gpios nvmem: add support for the write-protect pin dt-bindings: at24: remove the optional property write-protect-gpios eeprom: at24: remove the write-protect pin support .../devicetree/bindings/eeprom/at24.yaml | 6 ------ .../devicetree/bindings/nvmem/nvmem.yaml | 6 ++++++ drivers/misc/eeprom/at24.c | 9 --------- drivers/nvmem/core.c | 20 +++++++++++++++++-- drivers/nvmem/nvmem.h | 2 ++ include/linux/nvmem-provider.h | 3 +++ 6 files changed, 29 insertions(+), 17 deletions(-) -- 2.17.1
