Hi Jiri, I have two Fujitsu different FRAMs running with the stock at25 driver. I set the page size equal to the device size (as FRAMs have no pages). Are you able to run your FRAM with the unmodified driver? I assume that getting the device geometry from the chip is vendor specific (in contrast to flash devices which have standard commands for this). I suppose that there is no much value getting vendor specific information from a chip. If the drivers knows the vendor, it should also know the chip (e.g. from the dt). regards Christian On Friday, 9 April 2021, 17:47:17 CEST, Jiri Prchal wrote: > Adds sopport for Cypress FRAMs. > > Jiri Prchal (3): > nvmem: eeprom: at25: add support for FRAM > nvmem: eeprom: at25: add support for FRAM > nvmem: eeprom: add documentation for FRAM > > .../devicetree/bindings/eeprom/at25.yaml | 12 +- > drivers/misc/eeprom/Kconfig | 5 +- > drivers/misc/eeprom/at25.c | 151 ++++++++++++++---- > drivers/nvmem/core.c | 4 + > include/linux/nvmem-provider.h | 1 + > 5 files changed, 139 insertions(+), 34 deletions(-) > >
