linux-kernel - Re: [PATCH v2] ASoC: wm8962: Relax bit clock divider searching

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Message-ID: <20210308094652.GH106851@ediswmail.ad.cirrus.com>
Date:   Mon, 8 Mar 2021 09:46:52 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
CC:     <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
        <tiwai@...e.com>, <kuninori.morimoto.gx@...esas.com>,
        <festevam@...il.com>, <gustavoars@...nel.org>,
        <sebastian.krzyszkowiak@...i.sm>, <patches@...nsource.cirrus.com>,
        <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] ASoC: wm8962: Relax bit clock divider searching

On Mon, Mar 08, 2021 at 10:34:37AM +0800, Shengjiu Wang wrote:
> With S20_3LE format case, the sysclk = rate * 384,
> the bclk = rate * 20 * 2, there is no proper bclk divider
> for 384 / 40, because current condition needs exact match.
> So driver fails to configure the clocking:
> 
> wm8962 3-001a: Unsupported BCLK ratio 9
> 
> Fix this by relaxing bitclk divider searching, so that when
> no exact value can be derived from sysclk pick the closest
> value greater than expected bitclk.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> Reviewed-by: Daniel Baluta <daniel.baluta@....com>
> ---

Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Thanks,
Charles