Messages in this thread | | | Date | Mon, 19 Feb 2024 15:58:34 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH v6 5/6] arm64: dts: qcom: sm8450: Add opp table support to PCIe |
| |
On 09-02-24, 22:14, 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..
Okay, I leave it up to you guys to decide on how you want to do it. I still believe getting the information via DT is the right thing, but maybe I still don't understand the problem fully.
Thanks.
-- viresh
| |