Hello, On Sun, Feb 23, 2020 at 11:29:07AM +0800, Chen-Yu Tsai wrote: > Hi, > > On Sun, Feb 23, 2020 at 5:40 AM Ondrej Jirman <megous@xxxxxxxxxx> wrote: > > > > This enables passive cooling by down-regulating CPU voltage > > and frequency. > > Please state for the record how the trip points were derived. Were they from > the BSP? Or the user manual? The values are taken from the BSP for A83T: https://megous.com/git/linux/tree/drivers/thermal/sunxi-temperature.c?h=a83t-3.4-bsp-tbs-a711#n747 The datasheet only mentions recommended Ta (ambient operating temperature) range -20 to +70°C. So die voltages will be larger than that. I guess that roughly matches the BSP values. regards, o. > ChenYu
