On Tue, 20 Aug 2024 05:57:47 +0200, Dragan Simic wrote:
> Add thermal trips for the two GPU thermal sensors found in the Allwinner A64.
> There's only one GPU OPP defined since the commit 1428f0c19f9c ("arm64: dts:
> allwinner: a64: Run GPU at 432 MHz"), so defining only the critical thermal
> trips makes sense for the A64's two GPU thermal zones.
>
> Having these critical thermal trips defined ensures that no hot spots develop
> inside the SoC die that exceed the maximum junction temperature. That might
> have been possible before, although quite unlikely, because the CPU and GPU
> portions of the SoC are packed closely inside the SoC, so the overheating GPU
> would inevitably result in the heat soaking into the CPU portion of the SoC,
> causing the CPU thermal sensor to return high readings and trigger the CPU
> critical thermal trips. However, it's better not to rely on the heat soak
> and have the critical GPU thermal trips properly defined instead.
>
> [...]
Applied to sunxi/for-next in sunxi/linux.git, thanks!
[1/1] arm64: dts: allwinner: a64: Add GPU thermal trips to the SoC dtsi
https://git.kernel.org/sunxi/linux/c/89f1a037e97c
Best regards,
--
Chen-Yu Tsai <wens@xxxxxxxx>
