In that case I incorrectly thought (like the other forum posters) it was like DDR5 on-die ECC. What you describe is better than DD5 on-die ECC. Is this error reporting supported by Linux? Is there some way I can do fault injection (e.g. undervolting the RAM) to check it's working?
Yes it’s on-die. Yes it has error reporting. Don’t spread fud. There isn’t a dedicated chip because there doesn’t need to be.
Broadcom BCM2712