[RFC PATCH 11/13] arm64: tegra: Add SOR power-domain node

[Jon Hunter]

On 17/06/16 17:42, Thierry Reding wrote:
> * PGP Signed by an unknown key
> 
> On Fri, Jun 17, 2016 at 01:03:45PM +0100, Jon Hunter wrote:
>> Add node for SOR power-domain for Tegra210 and populate the SOR
>> power-domain phandle for SOR and DPAUX nodes that are dependent
>> on this power-domain.
>>
>> Please note that although neither the SOR or DPAUX drivers currently
>> support runtime power-management, by populating the power-domain node
>> the SOR power-domain will be turned on before probing SOR or DPAUX
>> devices and kept on while the devices are bound.
>>
>> Signed-off-by: Jon Hunter <jonathanh at nvidia.com>
>> ---
>>  arch/arm64/boot/dts/nvidia/tegra210.dtsi | 18 ++++++++++++++++++
>>  1 file changed, 18 insertions(+)
> 
> I've got patches queued in my drm-tegra tree to add support for runtime
> PM for the SOR driver. Will that in some way clash with this work if
> merged in parallel?

Yes I had seen those. I was wondering if I should include them here but
opted not too (as it was becoming a massive series). It should be fine
to enable RPM later, you just need to be aware that the partition could
turn off on a RPM put so you just need to ensure that any register
context is saved and restored.

By the way, one item I am not certain about is the relationship between
the HDMI device and the SOR device. If the HDMI is in the SOR partition
it should also have the SOR power-domain populated, but it just uses the
SOR, then the SOR driver should handle this.

Cheers
Jon

-- 
nvpublic