i.MX6ULL always disable SNVS_TAMPER?

[enginlee]

Hi,

My product uses i.MX6ULL (MCIMX6Y1DVM05AB) and I found TAMPER_PIN_DISABLE[1:0] is already written to 11b which means "disabled". Is that correct?

# cat /sys/fsl_otp/HW_OCOTP_CFG2
0x79f100f5

# cat /sys/fsl_otp/HW_OCOTP_CFG2
0x79f100ca

Thanks,

-Engin

[weidong_sun · Accepted solution]

Hi enginlee,

Yes, it is disabled.

Tamper function is used for POS, it is enabled in i.MX6UL ,whose part number includes G2, for example:

MCIMX6G2DVM05AA(B/C/D)

MCIMX6G2DVK05AA(B/C/D)

these part numbers are designed for POS.

Hope these information is helpful for you.

Have a nice day!

B.R,

weidong