linux-kernel - Re: [PATCH 3/3] ASoC: fsl_sai: Set MCLK input or output direction

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Message-ID: <20200917015048.GD22566@Asurada-Nvidia>
Date:   Wed, 16 Sep 2020 18:50:49 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
Cc:     timur@...nel.org, Xiubo.Lee@...il.com, festevam@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        alsa-devel@...a-project.org, lgirdwood@...il.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] ASoC: fsl_sai: Set MCLK input or output direction

On Wed, Sep 16, 2020 at 06:16:27PM +0800, Shengjiu Wang wrote:
> SAI support select MCLK direction with version.major > 3
> and version.minor > 1, the default direction is input,
> set it to be output according to DT property.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>

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

> ---
>  sound/soc/fsl/fsl_sai.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
> index 738b4dda7847..5117c1cd5682 100644
> --- a/sound/soc/fsl/fsl_sai.c
> +++ b/sound/soc/fsl/fsl_sai.c
> @@ -1117,6 +1117,13 @@ static int fsl_sai_probe(struct platform_device *pdev)
>  	if (ret < 0)
>  		dev_warn(&pdev->dev, "Error reading SAI version: %d\n", ret);
>  
> +	/* Select MCLK direction */
> +	if (of_find_property(np, "fsl,sai-mclk-direction-output", NULL) &&
> +	    sai->verid.major >= 3 && sai->verid.minor >= 1) {
> +		regmap_update_bits(sai->regmap, FSL_SAI_MCTL,
> +				   FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN);
> +	}
> +
>  	pm_runtime_enable(&pdev->dev);
>  	regcache_cache_only(sai->regmap, true);
>  
> -- 
> 2.27.0
>