Re: [PATCH 01/35] dt-bindings: qcom,pdc: Tighten reg to single APSS DRV region

[Dmitry Baryshkov]

On Mon, Apr 13, 2026 at 10:23:59AM +0200, Konrad Dybcio wrote:
> On 4/11/26 4:32 PM, Dmitry Baryshkov wrote:
> > On Sat, Apr 11, 2026 at 12:10:38AM +0530, Mukesh Ojha wrote:
> >> The PDC has multiple DRV regions, each sized 0x10000, where each region
> >> serves a specific client in the system. Linux only needs access to the
> > 
> > Nit: there are other OS than Linux. Would you rather point out that
> > other DRV regions are to be used by ... what?
> 
> TZ, HYP, HLOS, CPUCP..

=> commit message

> 
> I'm wondering if we can make use of the HYP one on e.g. Glymur, to
> parallelize accesses (and whether that would bring any practical
> benefit).
> 
> In the RPMH architecture, each "client" has their own (GPU, AOP, DISP,
> etc.). Then, each one of those clients may have an associates RSC
> (Resource State Coordinator) and/or anyOf BCM ("interconnect"), VRM
> ("regulator"), ARC ("RPMHPD") voting interfaces

At least the RSC should be visible to the OS. We don't use it (now), but
we probably will at some point (at least the DISP_RSC) if I understand
it correctly.

> 
> Konrad

-- 
With best wishes
Dmitry