I would like to enable the FIELD_RETURN_LOCK bit in OCOTP_SW_STICKY register.
IMX6DQ6SDLSRM described it is set to always enable for protecting FIELD_RETURN fuse.
But, When I check OCOTP_SW_STICKY register, FIELD_RETURN_LOCK bit is always 0b.
I think that FIELD_RETURN_LOCK is disabling at my test environment.
How do I set to FIELD_RETURN_LOCK to 1b = enable?
My test environment :
Board SABRE-AI CPU2
BSP Linux 4.1.15_2.0.0_ga
My test result :
(1) OCOTP_SW_STICKY register read from U-boot prompt.
=> md.l 0x21bC050 1
(2) Add below line to DCD table in U-boot source code. I could not get any log from debug console after this modification.
DATA 4 0x021bc050 0x00000004