Hi Jigar
there is no support for that chip in i.mx nxp official bsps, one can follow
standard steps, add driver:
[PATCH 0/3] rtc: Add pcf85263 — Linux Device Tree
follow general linux documentation:
The Userspace I/O HOWTO — The Linux Kernel documentation
linux - Userspace vs kernel space driver - Stack Overflow
Best regards
igor
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