[GIT PULL] arm64: X-Gene platforms DTS changes queued for 4.9 - part1

[Olof Johansson]

On Thu, Sep 15, 2016 at 12:30 AM, Will Deacon <will.deacon at arm.com> wrote:
> On Wed, Sep 14, 2016 at 06:57:59PM -0700, Duc Dang wrote:
>> On Wed, Sep 14, 2016 at 7:59 AM, Arnd Bergmann <arnd at arndb.de> wrote:
>> > On Friday, September 2, 2016 11:46:31 AM CEST Duc Dang wrote:
>> >> Hi Arnd, Olof,
>> >>
>> >> This is the first part of DTS changes for X-Gene platforms targeted for 4.9.
>> >>
>> >> The changes include:
>> >> + X-Gene Soc PMU support patch set from Tai Nguyen (v10 reviewed by
>> >> Mark, DT binding document acked by Rob [1] and was suggested to merge
>> >> via am-soc tree by Will [2])
>> >> + Follow up patch to enable DT entry for SoC PMU on X-Gene v2
>> >> + Correct PCIe legacy interrupt mode to level-active high
>> >> + DTS entry for X-Gene hwmon (v4 acked by Guenter, DT binding document
>> >> and driver is in linux-next now [3])
>> >>
>> >> Regards,
>> >> Duc Dang.
>> >
>> > Sorry for the long delay, I've just now started looking at the dts changes
>> > for arm64. The changes to arch/arm64/boot/dts look fine, but I don't
>> > want to mix driver changes with dts changes, as we use separate
>> > branches for those.
>> >
>> > Please send this again as two pull requests, one for the dts changes, and
>> > one for the rest (pmu driver, binding and MAINTAINERS file). Please
>> > also include an explanation in the tag description about why this gets
>> > merged through arm-soc. I see that Will suggested doing it that way,
>> > but I don't see what the reason is. We normally don't touch that directory.
>> Hi Arnd,
>>
>> I am not clear about the reason either. Probably we don't have a
>> dedicated tree for SoC PMU?
>
> That's right, there isn't a dedicated tree for SoC PMUs. I tend to handle
> the architected PMUs (e.g. the ones in the CPUs), but other PMUs have
> been ad-hoc in the past. That said, Mark and I do tend to review PMU
> drivers, because the internal perf interface is pretty easy to get wrong.
>
> Arnd -- what would you like to see here? I could collect SoC PMU patches
> together and send you a pull request, or would you like me to take them via
> the arm64 tree? It's worth noting that we have PMU drivers under drivers/bus
> and drivers/hwtracing too, and I *think* arm-soc has handled those in the
> past.

We're fine taking the code, we just don't want the driver changes in
the same branch as the DTS changes.


-Olof