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Date: Tue, 14 Apr 2020 16:01:10 -0300 From: Fabio Estevam <festevam@...il.com> To: Sebastian Reichel <sebastian.reichel@...labora.com> Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, Linux-ALSA <alsa-devel@...a-project.org>, linux-kernel <linux-kernel@...r.kernel.org>, kernel@...labora.com Subject: Re: [PATCH] ASoC: sgtl5000: Fix VAG power-on handling Hi Sebastian, On Tue, Apr 14, 2020 at 3:11 PM Sebastian Reichel <sebastian.reichel@...labora.com> wrote: > > As mentioned slightly out of patch context in the code, there > is no reset routine for the chip. On boards where the chip is > supplied by a fixed regulator, it might not even be resetted > during (e.g. watchdog) reboot and can be in any state. > > If the device is probed with VAG enabled, the driver's probe > routine will generate a loud pop sound when ANA_POWER is > being programmed. Avoid this by properly disabling just the > VAG bit and waiting the required power down time. > > Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com> Reviewed-by: Fabio Estevam <festivem@...il.com>
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