[PATCH 1/2] arm64: dts: juno: add GPU subsystem

Robin Murphy robin.murphy at arm.com
Tue Oct 1 12:45:30 UTC 2019

On 01/10/2019 09:59, Sudeep Holla wrote:
> On Mon, Sep 30, 2019 at 12:46:33PM -0500, Rob Herring wrote:
>> On Mon, Sep 30, 2019 at 10:25 AM Robin Murphy <robin.murphy at arm.com> wrote:
>>> Since we now have bindings for Mali Midgard GPUs, let's use them to
>>> describe Juno's GPU subsystem, if only because we can. Juno sports a
>>> Mali-T624 integrated behind an MMU-400 (as a gesture towards
>>> virtualisation), in their own dedicated power domain with DVFS
>>> controlled by the SCP.
>>> CC: Liviu Dudau <liviu.dudau at arm.com>
>>> CC: Sudeep Holla <sudeep.holla at arm.com>
>>> CC: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
>>> Signed-off-by: Robin Murphy <robin.murphy at arm.com>
>>> ---
>>>   .../bindings/gpu/arm,mali-midgard.yaml        |  5 +++-
>>>   arch/arm64/boot/dts/arm/juno-base.dtsi        | 27 +++++++++++++++++++
>>>   2 files changed, 31 insertions(+), 1 deletion(-)
>> Reviewed-by: Rob Herring <robh at kernel.org>
> If you plan to take it along with driver change,
> Acked-by: Sudeep Holla <sudeep.holla at arm.com>
> If not, please let us know. I can take it for v5.5

The driver change is debatable and not strictly necessary, so it 
probably makes more sense to take this one through the VExpress tree on 
its own. I wouldn't suggest flipping the status to "enabled" just yet, 
but it seems worth putting the basic description in place as a 
jumping-off point for folks to hack on (e.g. it's another 'interesting' 
case for devfreq OPP stuff).


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