linux-kernel - Re: [PATCH 3/3 v3] ASoC: fsl_sai: Move clock operation to PM runtime

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Date:   Sun, 21 Apr 2019 18:20:17 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Daniel Baluta <daniel.baluta@....com>
Cc:     "broonie@...nel.org" <broonie@...nel.org>,
        "S.j. Wang" <shengjiu.wang@....com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "timur@...nel.org" <timur@...nel.org>,
        "Xiubo.Lee@...il.com" <Xiubo.Lee@...il.com>,
        "festevam@...il.com" <festevam@...il.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH 3/3 v3] ASoC: fsl_sai: Move clock operation to PM runtime

On Sun, Apr 21, 2019 at 07:39:10PM +0000, Daniel Baluta wrote:
> From: Shengjiu Wang <shengjiu.wang@....com>
> 
> Turn off/on clocks when device enters suspend/resume. This
> can help saving power.
> 
> As a further optimization, we turn off/on mclk only when SAI
> is in master mode because otherwise mclk is externally provided.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>

Acked-by: Nicolin Chen <nicoleotsuka@...il.com>

Thanks