Re: [PATCH 0/4] Make Armada 375 use the reference clock when possible

Ezequiel Garcia
2014-10-23T12:38:18Z

On 10/22/2014 11:08 AM, Andrew Lunn wrote:
>> You don't clearly state whether your patch series keep compatibility
>> with the 375 Z1 or not. And in fact, it doesn't keep compatibility with
>> Z1.
>
> Hi Thomas
>
> That answers my question. Thanks
>
>> I'm fine with that, but then it means we should officially declare
>> the Z1 support in mainline as dead, and get rid of the workarounds that
>> applied only to 375 Z1.
>
> A big ACK.
>
> How bad is it if you run these patches on a Z1? Is it worth adding a
> revision check and calling BUG()?
>

So, I just tried this on a Z1. Here's the result:

sleep 3 -> sleeps for 6 seconds

Configuring the watchdog for 3 seconds and:

echo "barf" > /dev/watchdog -> resets after 6 seconds

So using the 25 MHz reference clock is broken on Z1, but the point at
least boots; it will "just" keep track of time wrongly.
--
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
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