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2016-02-08nvmem: NXP LPC18xx EEPROM memory NVMEM driverAriel D'Alessandro1-0/+330
This commit adds support for NXP LPC18xx EEPROM memory found in NXP LPC185x/3x and LPC435x/3x/2x/1x devices. EEPROM size is 16384 bytes and it can be entirely read and written/erased with 1 word (4 bytes) granularity. The last page (128 bytes) contains the EEPROM initialization data and is not writable. Erase/program time is less than 3ms. The EEPROM device requires a ~1500 kHz clock (min 800 kHz, max 1600 kHz) that is generated dividing the system bus clock by the division factor, contained in the divider register (minus 1 encoded). EEPROM will be kept in Power Down mode except during read/write calls. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>