linux-kernel - Re: [PATCH AUTOSEL for 4.15 026/102] ASoC: fsl_ssi: only enable proper channel slots in AC'97 mode

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Message-ID: <20180305102009.GA8588@sirena.org.uk>
Date:   Mon, 5 Mar 2018 10:20:09 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Sasha Levin <Alexander.Levin@...rosoft.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
Subject: Re: [PATCH AUTOSEL for 4.15 026/102] ASoC: fsl_ssi: only enable
 proper channel slots in AC'97 mode

On Sat, Mar 03, 2018 at 10:24:24PM +0000, Sasha Levin wrote:

> We need to make sure that only proper channel slots (in SACCST register)
> are enabled at playback start time since some AC'97 CODECs (like VT1613 on
> UDOO board) were observed requesting via SLOTREQ spurious ones just after
> an AC'97 link is started but before the CODEC is configured by its driver.

This was part of a wider AC'97 rework IIRC and I'm very suspicious of
backporting it independently.

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