linux-kernel - Re: [PATCH] ASoC: amd: Buffer Size instead of MAX Buffer

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Message-ID: <20200211153847.GK4543@sirena.org.uk>
Date:   Tue, 11 Feb 2020 15:38:47 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Ravulapati Vishnu vardhan rao 
        <Vishnuvardhanrao.Ravulapati@....com>
Cc:     Alexander.Deucher@....com, Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        Akshu Agrawal <akshu.agrawal@....com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        YueHaibing <yuehaibing@...wei.com>,
        Colin Ian King <colin.king@...onical.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: amd: Buffer Size instead of MAX Buffer

On Tue, Feb 11, 2020 at 06:42:28PM +0530, Ravulapati Vishnu vardhan rao wrote:

> Because of MAX BUFFER size in register,when user/app give small
> buffer size produces noise of old data in buffer.
> This patch rectifies this noise when using different
> buffer sizes less than MAX BUFFER.

In what way does this patch fix the issue?  I looks like it's moving a
buffer size setting from DMA to I2S but it's not clear why or how this
fixes the issue, or indeed what the actual issue that's causing what are
presumably underruns is?

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