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Message-ID: <20220222111519.rd5m4fxd7rvkuqqf@vireshk-i7> Date: Tue, 22 Feb 2022 16:45:19 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Lukasz Luba <lukasz.luba@....com> Cc: linux-kernel@...r.kernel.org, dietmar.eggemann@....com, rafael@...nel.org, daniel.lezcano@...aro.org, nm@...com, sboyd@...nel.org, mka@...omium.org, dianders@...omium.org, robh+dt@...nel.org, devicetree@...r.kernel.org, linux-pm@...r.kernel.org Subject: Re: [RFC][PATCH 1/2] dt-bindings: power: add Energy Model bindings On 22-02-22, 11:03, Lukasz Luba wrote: > OK, I misunderstood that. If that is possible than it would > be great. I'm assuming you are taking about OPP v2. Yes. > I can relax the > requirement that I need to provide this DT-EM for arm32, since they > have a legacy OPP v1. OPP V2 or V1 doesn't have anything to do with arm32/64. Anyone can implement the newer V2 version (basically whoever wants something more than a simple freq/volt pair). So arm32 SoC's that want to use the DT-EM thing, should migrate to opp-v2, we can't support that with opp-v1. > So we might have an entry similar that interconnect for the > bandwidth, but for us it would be 'opp-power-uw'? I will rather say similar to opp-microvolt or opp-microamp, so it better be opp-microwatt. > Let me have a look about some examples how that could be just > added/extended in the opp table but from board file. > If you have some handy link, I would be grateful. The file I provided earlier: arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts This is updating opp-microvolt property of a single OPP node in the whole table. Pretty much like this only. -- viresh
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