yes, so with uboot you can program SJC_DISABLE like this :
=> fuse prog 1 3 0x200000
And for enable Secure JTAG check the fuse Map in the reference manual at the address 0x470[23:22]
So, for find the fuse bit, word and bank,
1st, you need to find in the fuse map what you search, after you have the address (for example 0x470[23;22])
2nd, with the address you can find in the OCOTP memory map which word and bank correspond for your address (for example 470 correspond to Value of OTP Bank1 Word3)
3rd, use Uboot : => fuse prog <bank> <word> <bit address>
For example, for SJC_DISABLE it's 0x470
so 470 --> bank 1 word 3
bit 21 -> 1 : 0x200000 (1000000000000000000000)
so you have your command : => fuse prog 1 3 0x200000
Hope I was clear
I work on the imx8m Nano, but you can do a request for your board : Security Reference Manual for i.MX 8M Mini Applications Processor (nxp.com)
For answer to your question I think it's the same fuse so, yes 0x470[23:22] (JTAG_SMODE) it's for imx8m mini too.
But before burning fuse, when you will have this document check in the Fuse Map for your board, it's more safe.