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From: Mark Brown <broonie@kernel.org>
To: Sune Brian <briansune@gmail.com>
Cc: Charles Keepax <ckeepax@opensource.cirrus.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
	linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sound/soc/codecs/wm8978: add missing BCLK divider setup
Date: Tue, 7 Oct 2025 14:48:01 +0100	[thread overview]
Message-ID: <ec917317-4240-47ff-bb9a-6f2fe9068c19@sirena.org.uk> (raw)
In-Reply-To: <CAN7C2SBDC2LrWpUTe3zZakHCrmUy1nQ-WiguLQKVK1CyOPb9zw@mail.gmail.com>

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On Tue, Oct 07, 2025 at 09:39:59PM +0800, Sune Brian wrote:

> Before the below action started. I need more background, if possible.
> If my understand is correct on your ideas. Do you mean the default driver calls
> the bclkdiv on other places? But how could that bclkdiv # be correct
> from first place?
> As I had mentioned the div # ifself like this codec is a LUT rather
> than the actual divided #?
> For example /32 from LUT is a 3b101?
> For example what if MCLK is set higher than /64 could even out of the
> LUT from first place.
> The external div # passed in, how to ensure it is codec LUT compatible
> from first place?

Systems doing this are using a machine driver written for that specific
machine and will know exactly which CODEC and other components they are
dealing with.

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  reply	other threads:[~2025-10-07 13:48 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-03  9:13 [PATCH] sound/soc/codecs/wm8978: add missing BCLK divider setup Brian Sune
2025-10-07 10:30 ` Charles Keepax
2025-10-07 11:22   ` Sune Brian
2025-10-07 12:11     ` Charles Keepax
2025-10-07 12:18       ` Mark Brown
2025-10-07 12:26         ` Charles Keepax
2025-10-07 12:30           ` Mark Brown
2025-10-07 12:37             ` Sune Brian
2025-10-07 12:48       ` Sune Brian
2025-10-07 13:15         ` Charles Keepax
2025-10-07 13:39           ` Sune Brian
2025-10-07 13:48             ` Mark Brown [this message]
2025-10-07 13:54               ` Sune Brian
2025-10-07 11:33 ` [PATCH v2] ASoC: wm8978: " Brian Sune
2025-10-07 11:44   ` Mark Brown
2025-10-07 11:48     ` Sune Brian
2025-10-07 11:52       ` Mark Brown
2025-10-07 11:56         ` Sune Brian
2025-10-07 12:10           ` Mark Brown
2025-10-07 13:03             ` Sune Brian
2025-10-07 13:15               ` Mark Brown
2025-10-07 13:48                 ` Sune Brian

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