linux-kernel - Re: [PATCH 13/25] ASoC: sun8i-codec: Round up the LRCK divisor

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Date:   Mon, 5 Oct 2020 13:31:33 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Chen-Yu Tsai <wens@...e.org>, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Ondrej Jirman <megous@...ous.com>, alsa-devel@...a-project.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/25] ASoC: sun8i-codec: Round up the LRCK divisor

On Wed, Sep 30, 2020 at 09:11:36PM -0500, Samuel Holland wrote:
> The codec supports only power-of-two BCLK/LRCK divisors. If either the
> slot width or the number of slots is not a power of two, the LRCK
> divisor must be rounded up to provide enough space. To do that, use
> order_base_2 (instead of ilog2, which rounds down).
> 
> Since the rounded divisor is also needed for setting the SYSCLK/BCLK
> divisor, return the order base 2 instead of fully calculating the
> hardware register encoding.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>

Acked-by: Maxime Ripard <mripard@...nel.org>

Maxime

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