On 1/12/2024 10:20 PM, Bjorn Helgaas wrote:
On Fri, Jan 12, 2024 at 07:52:05PM +0530, Krishna chaitanya chundru wrote:
QCOM Resource Power Manager-hardened (RPMh) is a hardware block which
maintains hardware state of a regulator by performing max aggregation of
the requests made by all of the processors.
PCIe controller can operate on different RPMh performance state of power
domain based up on the speed of the link. And this performance state varies
from target to target.
It is manadate to scale the performance state based up on the PCIe speed
link operates so that SoC can run under optimum power conditions.
Add Operating Performance Points(OPP) support to vote for RPMh state based
upon GEN speed link is operating.
Thanks for this "OPP" expansion! Maybe "GEN" is unnecessary in this
sentence? And below, could be replaced with actual speeds?
ACK
OPP can handle ICC bw voting also, so move icc bw voting through opp
framework if opp entries are present.
s/opp/OPP/ to match
s/icc/ICC/ similarly (and perhaps expand once)
Also below in comments, etc.
ACK.
-Krishna Chaitanya.
In PCIe certain gen speeds like GEN1x2 & GEN2X1 or GEN3x2 & GEN4x1 use
same icc bw and has frequency, so use frequency based search to reduce
number of entries in the opp table.
Don't initialize icc if opp is supported.
Bjorn
