Re: [Linux-stable-mirror] [PATCH AUTOSEL for 4.9 31/56] ASoC: da7218: Set DAI output pin high impedance when not in use
On Wed, Nov 15, 2017 at 12:19:18PM +0000, Mark Brown wrote:
On Wed, Nov 15, 2017 at 02:45:42AM +0000, alexander.levin@verizon.com wrote:
This patch updates the AIF_OUT widget to set the DAI output pin of the device as high impedance when not in use.
This will leave the line floating which EEs don't always like. It's probably OK and hasn't lead to any reports in mainline yet but still...
The idea I got from the patch is that output will not be working if there are multiple codecs?
On 15 November 2017 16:43, alexander.levin@verizon.com wrote:
On Wed, Nov 15, 2017 at 12:19:18PM +0000, Mark Brown wrote:
On Wed, Nov 15, 2017 at 02:45:42AM +0000, alexander.levin@verizon.com wrote:
This patch updates the AIF_OUT widget to set the DAI output pin of the device as high impedance when not in use.
This will leave the line floating which EEs don't always like. It's probably OK and hasn't lead to any reports in mainline yet but still...
The idea I got from the patch is that output will not be working if there are multiple codecs?
Yes, if there are multiple codecs sharing the same DAI line for capture as DA7217/8, and we don't set this to high impedance, then it will interfere with the other codecs' capture data.
linux-stable-mirror@lists.linaro.org
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Adam Thomson -
alexander.levin＠verizon.com