1*fd307a4aSJiri PrchalWhat: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/fram 2*fd307a4aSJiri PrchalDate: June 2021 3*fd307a4aSJiri PrchalKernelVersion: 5.14 4*fd307a4aSJiri PrchalContact: Jiri Prchal <jiri.prchal@aksignal.cz> 5*fd307a4aSJiri PrchalDescription: 6*fd307a4aSJiri Prchal Contains the FRAM binary data. Same as EEPROM, just another file 7*fd307a4aSJiri Prchal name to indicate that it employs ferroelectric process. 8*fd307a4aSJiri Prchal It performs write operations at bus speed - no write delays. 9*fd307a4aSJiri Prchal 10*fd307a4aSJiri PrchalWhat: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/sernum 11*fd307a4aSJiri PrchalDate: May 2021 12*fd307a4aSJiri PrchalKernelVersion: 5.14 13*fd307a4aSJiri PrchalContact: Jiri Prchal <jiri.prchal@aksignal.cz> 14*fd307a4aSJiri PrchalDescription: 15*fd307a4aSJiri Prchal Contains the serial number of the Cypress FRAM (FM25VN) if it is 16*fd307a4aSJiri Prchal present. It will be displayed as a 8 byte hex string, as read 17*fd307a4aSJiri Prchal from the device. 18*fd307a4aSJiri Prchal 19*fd307a4aSJiri Prchal This is a read-only attribute. 20