Re: [PATCH] ARM: dts: sun8i-a83t: Add thermal trip points/cooling maps

[OndÅej Jirman]

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