Re: [PATCH AUTOSEL 4.19 031/123] ASoC: Intel: Power down links before turning off display audio power

Pierre-Louis Bossart
2018-12-05T15:34:36Z

On 12/5/18 3:48 AM, Mark Brown wrote:
> On Wed, Dec 05, 2018 at 04:34:23AM -0500, Sasha Levin wrote:
>> From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>>
>> [ Upstream commit 4c10473d6ddf12ec124c9ff71a5d23bb5388478b ]
>>
>> On certain platforms, Display HDMI HDA codec was not going to sleep state
>> after the use when links are powered down after turning off the display
>> power. As per the HW recommendation, links are powered down before turning
>> off the display power to ensure that the codec goes to sleep state.
>
> Are we sure there's no dependencies here?

If you are referring to dependencies to other patches, not that I can
think of. Based on timelines there isn't a strong link with 4.19: the
patch was initially submitted in August (and missed), before v4.19 came
out, and has also been used in 4.14 backports.