Hi, * Andreas Kemnade <andreas@xxxxxxxxxxxx> [211211 10:43]: > The patch fixing thermal power management is: > > commit 5093402e5b449b64f7bbaa09057ce40a8f3c1484 > Author: Adam Ford <aford173@xxxxxxxxx> > Date: Fri Sep 11 07:31:56 2020 -0500 > > thermal: ti-soc-thermal: Enable addition power management > > The bandgap sensor can be idled when the processor is too, but it > isn't currently being done, so the power consumption of OMAP3 > boards can elevated if the bangap sensor is enabled. > > This patch attempts to use some additional power management > to idle the clock to the bandgap when not needed. > > Maybe there is something specific to the N900 which causes these > issues? Well, I'll recheck on the boards I have. My guess the issue is that omap3-thermal needs to constantly poll for the registers to get the status and that blocks any deeper idle states. For PM, probably omap3-thermal needs to be tagged with status = "disabled" assuming there is some other external thermal sensor. I'm also guessing that the old Nokia kernel never used the integrated thermal sensor, might be worth checking though. Regards, Tony
