Hi Alexandre, On Wednesday 22 April 2015 01:26:15 Alexandre Belloni wrote: > On 14/04/2015 at 11:11:51 +0200, Juergen Borleis wrote : > > 2nd try, this time with a cover letter... m( > > > > The built-in RTC unit on some i.MX SoCs isn't an RTC only. It is also a > > tamper monitor unit which can keep some keys. When it does its tamper > > detection job > > Does it have more functions? I would say that it also holds some keys > but I don't have a handy Freescale representative to contact ;)
Yes it can hold some keys and will delete them if it detects a security violation via its tamper detection feature. > I'm fine getting that unlocking done in the RTC driver but maybe in the > future, it will be necessary to handle that in an MFD driver when adding > support for the other functions. This change set just makes the RTC work again. Observation was, *sometimes* and *somehow* this unit tends to lock even if no of these tamper detection features were enabled nor the externals signals (to detect these security violations) were used. Regards, Juergen -- Pengutronix e.K. | Juergen Borleis | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
