On 05-11-15, 19:09, dawei chien wrote: > Thank you for your kindly explaining, now I could understand what I > miss, I will send device tree binding on next version such like > following description. > > --- a/Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt > +++ b/Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt > @@ -10,6 +10,17 @@ Required properties: > Please refer to > Documentation/devicetree/bindings/clk/clock-bindings.txt for > generic clock consumer properties. > - proc-supply: Regulator for Vproc of CPU cluster. > +- dynamic-power-coefficient: > + Usage: optional > + Value type: <prop-encoded-array> > + Definition: A u32 value that represents an indicative > + running time dynamic power coefficient in > + fundamental units of mW/MHz/uVolt^2. > + The dynamic energy consumption of the CPU > + is proportional to the square of the > + Voltage (V) and the clock frequency (f). > + Pdyn = dynamic-power-coefficient * V^2 * f > + where voltage is in uV, frequency is in MHz. Please check with Punit if he is planning to add the same.. > Thank you for your kindly explaining, Now I know I should develop and > test on mainline branch since this is where I try to add code. > > However, please understanding currently mt8173_cpufreq.c is not ready > for OPPV2 in mainline as far, that's the reason why currently I can't > reuse OPPV2 and extend for static power table. My propose is for adding > CPU cooling device for our own product. Firstly, we don't care. You are pushing something to mainline, you have to get it tested someway on mainline. Secondly, there are *almost* no changes required to the mtk cpufreq driver for OPPV2. Just update your DT in a similar way it is done for one of the exynos platforms and it should just work fine. -- viresh -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
