Hi Krzysztof, On Wed, 18 May 2022 at 12:49, Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> wrote: > > On 17/05/2022 20:45, Anand Moon wrote: > > Hi Krzysztof, > > > > On Sun, 15 May 2022 at 15:18, Krzysztof Kozlowski > > <krzysztof.kozlowski@xxxxxxxxxx> wrote: > >> > >> On 15/05/2022 08:41, Anand Moon wrote: > >>> Add runtime power management for exynos thermal driver. > >> > >> First of all - why? Second, I do not see it being added. Where are the > >> runtime callbacks? > >> > > > > To control runtime control PMU, did I miss something? > > Controlling runtime PM by itself is not a goal. What does it change if > it is enabled? > It means we could have efficient power management for this driver. as per my understanding, it controls runtime sleep and improves power efficiency > > I looked into imx thermal driver # drivers/thermal/imx_thermal.c > > to enable run-time power management for exynos driver. > > So you have runtime PM enabled and then what happens? Where is the power > saving? Since you did not implement the callbacks, all this should be > explained in commit msg. > Ok, As per the original code, it just registers the SIMPLE_DEV_PM_OPS with .pm = &exynos_tmu_pm So I have made sure that suspend resume feature works correctly with these changes on SBC Odroid U3 and XU4. I will try to look into setting RUNTIME_PM_OPS or use UNIVERSAL_DEV_PM_OPS instead of SIMPLE_DEV_PM_OPS any thought on this? > > Best regards, > Krzysztof Thanks and Regards -Anand
