[AMD Official Use Only - General]
-----Original Message----- From: Mark Brown broonie@kernel.org Sent: Friday, January 27, 2023 10:53 To: Limonciello, Mario Mario.Limonciello@amd.com Cc: Jaroslav Kysela jkysela@redhat.com; Mukunda, Vijendar Vijendar.Mukunda@amd.com; Saba Kareem, Syed Syed.SabaKareem@amd.com; linux-kernel@vger.kernel.org; Pananchikkal, Renjith Renjith.Pananchikkal@amd.com; Mark Pearson mpearson@lenovo.com; Liam Girdwood lgirdwood@gmail.com; Jaroslav Kysela perex@perex.cz; Takashi Iwai tiwai@suse.com; alsa- devel@alsa-project.org Subject: Re: [PATCH 1/6] ASoC: amd: yc: Adjust the gain for PDM DMIC
On Fri, Jan 27, 2023 at 10:01:28AM -0600, Mario Limonciello wrote:
A number of users for Lenovo Rembrandt based laptops are reporting that the microphone is too quiet relative to Windows with a dual boot.
Increase the PDM gain to overcome this problem.
Why not just make this a regular control that can be adjusted as users see fit?
Maximum HW gain is what we probably should have been setting from the beginning. The module parameter stuff was in case we need to debug it.
My thought is if we find some reported problems with the series we ask users to try the module parameters. If we're finding that certain parameters make sense for different systems then we tear out the module parameter and instead export a control and set policy from ucm.
If nothing is reported, we can probably drop the parameters at some time in the future.