From: Marco Felsch <m.felsch@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org,
Johannes Schneider <johannes.schneider@leica-geosystems.com>
Subject: Re: [PATCH master] i.MX: HAB: fix i.MX8MP field-return fuse
Date: Mon, 10 Mar 2025 14:51:54 +0100 [thread overview]
Message-ID: <20250310135154.bw6awpkjydcf32zp@pengutronix.de> (raw)
In-Reply-To: <2770e761-a192-437f-bc82-128519c04d18@pengutronix.de>
On 25-03-10, Ahmad Fatoum wrote:
> Hello Marco,
>
> On 3/10/25 12:36, Marco Felsch wrote:
> > Current tests showed that fusing just the single field-return bit(0) on
> > i.MX8MP SoCs brick the device.
>
> So such a device is bricked permanently with no way to upload
> a bootloader again to fuse the remainder of the bits?
Yes, as written here [3], the device isnow in "device asserts security
violation" state, what ever this means but maybe: "I refuse to power
up".
[3] https://lore.kernel.org/all/a9ebece9-4ab6-4bca-bebe-985e0bf95278@oss.nxp.com/
> Interesting thing to not document :/
Took us 2 devices to figure it out :/ We also don't know why NXP doesn't
care and don't update the (S)TRM since the v1 of [3] is 9months old.
Regards,
Marco
next prev parent reply other threads:[~2025-03-10 15:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-10 11:36 Marco Felsch
2025-03-10 13:31 ` Ahmad Fatoum
2025-03-10 13:51 ` Marco Felsch [this message]
2025-03-10 16:36 ` SCHNEIDER Johannes
2025-03-12 10:22 ` Sascha Hauer
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