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CONFIG_RTC_DRV_AT91SAM9_GPBR: Backup Register Number

General informations

The Linux kernel configuration item CONFIG_RTC_DRV_AT91SAM9_GPBR:

Help text

This option is only relevant for legacy board support and won't be used when booting a DT board.

The RTC driver needs to use one of the General Purpose Backup Registers (GPBRs) as well as the RTT. You can choose which one will be used. The default of zero is normally OK to use, but on some systems other software needs to use that register.



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