Hi MyungJin
for RTC one can look at Chapter 57 Secure Non-Volatile Storage (SNVS)
PMU -sect.50.7 PMU Memory Map/Register Definition IMX6DQRM
GIC is described in Chapter 4 Configuring the GIC Driver iMX6_Firmware_Guide.pdf
included in i.MX 6Series Platform SDK
Best regards
igor
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