Re: [PATCH v6 5/6] arm64: dts: qcom: sm8450: Add opp table support to PCIe

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On 2/10/2024 2:44 AM, Konrad Dybcio wrote:
On 2.02.2024 08:33, Viresh Kumar wrote:
On 01-02-24, 15:45, Konrad Dybcio wrote:
I'm lukewarm on this.

A *lot* of hardware has more complex requirements than "x MBps at y MHz",
especially when performance counters come into the picture for dynamic
bw management.

OPP tables can't really handle this properly.

There was a similar concern for voltages earlier on and we added the capability
of adjusting the voltage for OPPs in the OPP core. Maybe something similar can
be done here ?

I really don't think it's fitting.. At any moment the device may require any
bandwidth value between 0 and MAX_BW_PER_LINK_GEN * LINK_WIDTH..

Konrad
Viresh & konrad can you both come to conclusion on this.

- Krishna Chaitanya.




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