On 12/01/2016 05:04 PM, Stephen Warren wrote:
> On 12/01/2016 07:15 AM, Ralf Ramsauer wrote:
>> I observed that touching MMIO regions of Tegra devices with its
>> corresponding clock gate deactivated immediately freezes the whole
>> system. No kernel panic, nothing.
>> I tested this behavior with a small kernel module, find it attached. A
>> few seconds after loading this module, the whole device freezes. Tested
>> this on a TK1 and TX1.
> Unfortunately, this is indeed the way the HW works.
That's no good news :(
Do you know if this applies to the whole Tegra architecture or only to
>> What is the actual expected behavior on ARM(64) when touching ungated
>> MMIO regions? Is it specified somewhere?
> I don't believe the ARM architecture specifies behaviour in this case,
> or if it does, defines it as implementation defined, which means that
> pretty much any behaviour is valid.
I tested the same scenario on another ARM64 board (LeMaker HiKey), which
did (fortunately) not freeze.
You received this message because you are subscribed to the Google Groups
To unsubscribe from this group and stop receiving emails from it, send an email
For more options, visit https://groups.google.com/d/optout.