Re: [PATCH] PCI: qcom: Use OPP only if the platform supports it

[Krzysztof Wilczyński]

Hello,

> With commit 5b6272e0efd5 ("PCI: qcom: Add OPP support to scale
> performance"), OPP was used to control the interconnect and power domains
> if the platform supported OPP. Also to maintain the backward compatibility
> with platforms not supporting OPP but just ICC, the above mentioned commit
> assumed that if ICC was not available on the platform, it would resort to
> OPP.
> 
> Unfortunately, some old platforms don't support either ICC or OPP. So on
> those platforms, resorting to OPP in the absence of ICC throws below errors
> from OPP core during suspend and resume:
> 
> qcom-pcie 1c08000.pcie: dev_pm_opp_set_opp: device opp doesn't exist
> qcom-pcie 1c08000.pcie: _find_key: OPP table not found (-19)
> 
> Also, it doesn't make sense to invoke the OPP APIs when OPP is not
> supported by the platform at all. So let's use a flag to identify whether
> OPP is supported by the platform or not and use it to control invoking the
> OPP APIs.

Applied to controller/qcom, thank you!

[1/1] PCI: qcom: Use OPP only if the platform supports it
      https://git.kernel.org/pci/pci/c/d0fa8ca89100

	Krzysztof