On 6/13/22 05:53, Cezary Rojewski wrote: > Hello, > > It's been a while since catpt-driver [1] has been introduced to provide > full support for Broadwell (BDW) machines with Intel DSP. For BDW, audio > devices can make use of DSP only in I2S mode. In 2015 Rafael and Dominik > provided quirk [2] for Dell XPS 13 9343. Given the description: > > _For example, based on what ACPI exports as the supported revision, Dell > XPS 13 (2015) configures its audio device to either work in HDA mode or > in I2S mode, where the former is supposed to be used on Linux until the > latter is fully supported (in the kernel as well as in user space)._ > > It's clear that such configuration was not fully supported back then. I > believe now it is. Perhaps it is time to let the quirk in mention go? By > that I mean just the relevant entry, not the ACPI_REV_OVERRIDE_POSSIBLE > functionality as a whole. This should be a distribution or power-user decision to enable the I2S version IMHO. There is nothing new in terms of functionality with the I2S version, so limited added-value that doesn't offset the added risk due to the dependencies on mixer settings that may or may not be installed (UCM, etc). If it ain't broke don't fix it.
