On Mon, Feb 11, 2019 at 03:14:53PM +0100, Greg Kroah-Hartman wrote: > On the Allwinner A64 SoCs, the audio codec has a built-in headphone > amplifier. This amplifier has a power supply separate from the rest of > the analog audio circuitry, labeled cpvdd. > This patch adds a DAPM widget for this supply, and ties it to the > headphone amp widget. This is more a new feature than a bug fix, it doesn't look like obvious stable material.