From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BECEC433E0 for ; Fri, 29 May 2020 18:17:11 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CBBAB206A4 for ; Fri, 29 May 2020 18:17:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Vunmkwy1"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="rs/5+UaB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBBAB206A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 25BBA1768; Fri, 29 May 2020 20:16:19 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 25BBA1768 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1590776229; bh=GH7xgOfWGLC1xYWHZL51BlZXClwRjmPTGXTEkgGZCAc=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Vunmkwy1TkdMKSCscyBEA7lbChr2TpUIOWxRl0zTeH+f75FQwvEEDfqOT1bu6pS93 KLmmx8p5LS3jE6wkgYJkxNS4iKWs4ZfKz4dhpQuByjEhBgXVdNWkpFjKyKAygBHQGe 6XbnNkTFg4dJ2FejGoQcQquIlcWuWz2WSJQp1dj0= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id AF7BFF80149; Fri, 29 May 2020 20:16:18 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id D0045F8016F; Fri, 29 May 2020 20:16:16 +0200 (CEST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id F3CE4F80125 for ; Fri, 29 May 2020 20:16:12 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz F3CE4F80125 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="rs/5+UaB" Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E96E3206A4; Fri, 29 May 2020 18:16:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590776170; bh=GH7xgOfWGLC1xYWHZL51BlZXClwRjmPTGXTEkgGZCAc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rs/5+UaBczGURiLrYQDpbv1FEsswVSL+V7v/G+hW1TcMvv846K+Vqn5aLBaf0Zth3 fKZGLUa+ZDpzeu3pWLeubWt+46pbK9QSLhmRNRxYJwAmddJfx/XAE+WX2bhO/qkD1V RDEIci3V4TGyCD05zXZeC4PH9tOmCjRw2P5giNv4= Date: Fri, 29 May 2020 19:16:06 +0100 From: Mark Brown To: Tzung-Bi Shih Subject: Re: [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode Message-ID: <20200529181606.GU4610@sirena.org.uk> References: <1590750293-12769-1-git-send-email-jiaxin.yu@mediatek.com> <20200529110915.GH4610@sirena.org.uk> <20200529130539.GK4610@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="oP9at/Ymg5VWhwKB" Content-Disposition: inline In-Reply-To: X-Cookie: The Killer Ducks are coming!!! User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Hariprasad Kelam , Linux Kernel Mailing List , howie.huang@mediatek.com, Takashi Iwai , ALSA development , Jiaxin Yu , Liam Girdwood , linux-mediatek@lists.infradead.org, Matthias Brugger , linux-arm-kernel@lists.infradead.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" --oP9at/Ymg5VWhwKB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sat, May 30, 2020 at 01:26:20AM +0800, Tzung-Bi Shih wrote: > On Fri, May 29, 2020 at 9:05 PM Mark Brown wrote: > > I thought that was normal for DMICs - is this selecting between left and > > right or something? > Not sure what is the common name but use the same context here. > MT6358 accepts up to 2 PDM wires for 2 DMICs. > If one wire mode is on, MT6358 only accepts 1 PDM wire. > If one wire mode is off, MT6358 merges L/R from 2 PDM wires into 1 > I2S-like to SoC. Oh, interesting - so it's essentially a mixer? Not seen that before but makes sense. In any case this definitely seems like a good fit for a DT property. --oP9at/Ymg5VWhwKB Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl7RUWYACgkQJNaLcl1U h9DzCAf/eSG8ftQqt2zLUXgVK2VdTkdi/4wwtHrEUTnLh92NVK3qVJo7AlDSmwxK nq/ophHJqVsYmeXUCott6BaJKspd6r+KnrnyJRupzBixtLTx573x7VdREPful5eW 6cVUHkoI0quLHqspblBrZFW0kvt6iwuol2dK0pIORn6rRiaaQlzB9kTmE1BI5Clt GZrYuFcCzsW7IHYLPWD3Mbl9IsTFius8mjWym4jiglkPFu+8c8bgXRLJE7wGgoGz x60eHOnNmXwuzOBkrao6njQPWLX+/jtRU5aw4mQ5csVzf662KRmsciNScxyWLHMV v00PW1FlfI9AGrtQdlSKb1UMyO+Rpg== =ODhy -----END PGP SIGNATURE----- --oP9at/Ymg5VWhwKB--