162306a36Sopenharmony_ciWhat: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/fram 262306a36Sopenharmony_ciDate: June 2021 362306a36Sopenharmony_ciKernelVersion: 5.14 462306a36Sopenharmony_ciContact: Jiri Prchal <jiri.prchal@aksignal.cz> 562306a36Sopenharmony_ciDescription: 662306a36Sopenharmony_ci Contains the FRAM binary data. Same as EEPROM, just another file 762306a36Sopenharmony_ci name to indicate that it employs ferroelectric process. 862306a36Sopenharmony_ci It performs write operations at bus speed - no write delays. 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciWhat: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/sernum 1162306a36Sopenharmony_ciDate: May 2021 1262306a36Sopenharmony_ciKernelVersion: 5.14 1362306a36Sopenharmony_ciContact: Jiri Prchal <jiri.prchal@aksignal.cz> 1462306a36Sopenharmony_ciDescription: 1562306a36Sopenharmony_ci Contains the serial number of the Cypress FRAM (FM25VN) if it is 1662306a36Sopenharmony_ci present. It will be displayed as a 8 byte hex string, as read 1762306a36Sopenharmony_ci from the device. 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci This is a read-only attribute. 20