linux-kernel - Re: [PATCH] ASoC: fsl_sai: Enable MCTL_MCLK

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Date:   Thu, 6 Jul 2023 10:22:12 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Andreas Henriksson <andreas@...al.se>
Cc:     Shengjiu Wang <shengjiu.wang@...il.com>,
        Shengjiu Wang <shengjiu.wang@....com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Hans Söderlund <hans.soderlund@...lbit.se>
Subject: Re: [PATCH] ASoC: fsl_sai: Enable MCTL_MCLK_EN bit for master mode

Hi Andreas,

On Thu, Jul 6, 2023 at 9:34 AM Andreas Henriksson <andreas@...al.se> wrote:

> I think your initial review comment was spot on Fabio. There probably
> needs to be a(n imx8mm) specific flag that says when this workaround
> should be applied and gate the code in bclk function on that.
> Atleast that's the only thing I can think of if my interpretation of the
> problem for imx8mm is correct.

Yes, deciding whether MCLK_EN should act as a clock gate based on
the number of SAI registers seems fragile to me.

I have sent a proposal as RFC. Please give it a try if you have a chance.

I would like Shengjiu to confirm if imx8mn and imx93 should also
behave like imx8mm in this aspect.

Cheers