OCOTP_SW_STICKY modification

Kazuma_Sasaki — Tue, 02 Oct 2018 05:38:57 GMT

I would like to set the FIELD_RETURN_LOCK bit at OCOTP_SW_STICKY register.

When I set the FIELD_RETURN_LOCK in U-BOOT phase, it is able to set to 1.

But, when I set the FIELD_RETURN_LOCK in Linux phase, it is not able to set to 1.

Why I am not able to write the OCOTP_SW_STICKY register at linux phase?

BSP version = L4.1.15_2.0.0_ga

Board = SABRE-AI

(1) case of U-BOOT

=> md.l 0x21bc050 1
021bc050: 00000018 ....
=> mw.l 0x21bc050 0x00000004
=> md.l 0x21bc050 1
021bc050: 0000001c ....

(2) case of Linux

root@imx6qdlsolo:~# /unit_tests/memtool -32 0x21bc050 1
Reading 0x1 count starting at address 0x021BC050

0x021BC050: 00000018

root@imx6qdlsolo:~# /unit_tests/memtool -32 0x21bc050=0x00000004
Writing 32-bit value 0x4 to address 0x021BC050

root@imx6qdlsolo:~# /unit_tests/memtool -32 0x21bc050 1
Reading 0x1 count starting at address 0x021BC050

0x021BC050: 00000018

Best Regards,

Kazuma Sasaki.

Re: OCOTP_SW_STICKY modification

Kazuma_Sasaki — Tue, 09 Oct 2018 15:09:38 GMT

Hi technical support team,

Do you have any update?

Best Regards,

Kazuma Sasaki.