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Message-ID: <AM6PR08MB437600972B26E3A56E1190C0FFB09@AM6PR08MB4376.eurprd08.prod.outlook.com>
Date:   Mon, 20 Jun 2022 15:30:45 +0000
From:   Pierluigi Passaro <pierluigi.p@...iscite.com>
To:     Mark Brown <broonie@...nel.org>
CC:     Alifer Willians de Moraes <alifer.m@...iscite.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Eran Matityahu <eran.m@...iscite.com>,
        "festevam@...il.com" <festevam@...il.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "nicoleotsuka@...il.com" <nicoleotsuka@...il.com>,
        "patches@...nsource.cirrus.com" <patches@...nsource.cirrus.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "shengjiu.wang@...il.com" <shengjiu.wang@...il.com>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "Xiubo.Lee@...il.com" <Xiubo.Lee@...il.com>
Subject: Re: [PATCH 4/4] ASoC: wm8904: add DMIC support

> > > Via firmware description.

> > Can you please provide any reference approach in the kernel code ?

> git grep of_
> git grep fwnode_

> and I don't immediately remember what the prefix is for ACPI functions.

Just for my understanding, are you suggesting to set a device tree property to force a fixed behavior in the driver ?
WM8904 allows using both a DMIC and LINEIN, switching between one or the other and this is how we currently use it.
Why the user should not be allowed to switch between DMIC and LINEIN ?

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