[Freedreno] [PATCH 2/2] arm64: dts: sdm845: Support GPU/GMU

[viresh.kumar@linaro.org (Viresh Kumar)]

On 08-03-18, 13:14, Jordan Crouse wrote:
> It seems to me that performance_state has a direct relationship with genpd
> which is good for CPU votes but in this case, we're just passing along raw data
> to an independent microcontroller. The 'qcom,arc-level' is used to construct
> the actual values that the GMU will program into the RPMh. Since these are

The "genpd" here is created specially for this RPM. The performance-state thing
is designed to solve this very specific problem of qualcomm SoCs and there is no
way we are going to add another property for this now.

> informational (from the CPU perspective) rather than functional I feel like
> that using performance_state for this would be as hacky as using opp-microvolt
> or something else.

There is some WIP stuff here Rajendra is testing currently.

ssh://git at git.linaro.org/people/viresh.kumar/mylinux.git opp/genpd/qcom

Please have a talk with Rajendra who can help you understand on how this can be
used for GPUs.

-- 
viresh