linux-kernel - Re: [PATCH v3] ASoC: fsl_asrc: Add an option to select internal ratio mode

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Date:   Tue, 30 Jun 2020 11:11:17 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
Cc:     Timur Tabi <timur@...nel.org>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] ASoC: fsl_asrc: Add an option to select internal ratio mode

On Tue, Jun 30, 2020 at 11:07 AM Shengjiu Wang <shengjiu.wang@....com> wrote:
>
> The ASRC not only supports ideal ratio mode, but also supports
> internal ratio mode.
>
> For internal rato mode, the rate of clock source should be divided
> with no remainder by sample rate, otherwise there is sound
> distortion.
>
> Add function fsl_asrc_select_clk() to find proper clock source for
> internal ratio mode, if the clock source is available then internal
> ratio mode will be selected.
>
> With change, the ideal ratio mode is not the only option for user.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>

Reviewed-by: Fabio Estevam <festevam@...il.com>