correct source tree to make contributions to Linux thermal framework

Hello Developers, At our company, we maintain an internal thermal framework patch. We are exploring the option to up-stream this patch so we don't have to keep porting this from one Kernel version to the other. Thermal framework code resides here: https://elixir.bootlin.com/linux/latest/source/drivers/thermal? What is the correct source tree we should use from https://git.kernel.org/?? Thanks, Anand