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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 E095AC433FF for ; Thu, 1 Aug 2019 11:48:15 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B171220B7C for ; Thu, 1 Aug 2019 11:48:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="V6O2zfRr"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sirena.org.uk header.i=@sirena.org.uk header.b="p2omNg3C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B171220B7C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Km64HOA2DXCXdgSYXXkSOxrT8uZgKo33oE4hiLqOFHI=; b=V6O2zfRrd3xJ9H1wxP2t4QNYe hkyS020iqq+qwmWWe2Z0aK37JQcx0UxBnSC6B6u/TK2rZTFP9rlEJYq4qfWeq6Sx5DE53KfVVHnAj KkrOSQFXvegqXwneoRToUp5x3gf7uLFZzb7obj4hG7TnUbhPvNk1UjwYo/PwQU7vRB+62ou+twXND IH/cCOxFDM6B+84LEqftDxcCPxbKssZDT3iO0+NJSjHwsIe4YpIgzGpxmRUY7esRcOq2AovCjPEZJ bPAUBMD3nh+Wc30UOTdJrBxtyfe8NPtCcpdMwCQp0LS8talbk7t7Imr53gvWeQ8WGFUzbIeiCprmA K7Q8PJLxg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1ht9Z9-0008JB-Ab; Thu, 01 Aug 2019 11:48:15 +0000 Received: from heliosphere.sirena.org.uk ([2a01:7e01::f03c:91ff:fed4:a3b6]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1ht9Z6-0008Ip-2J for linux-arm-kernel@lists.infradead.org; Thu, 01 Aug 2019 11:48:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=TkW/BO5jh2dSyiVKetNqSUH/n4tPcDOBmjvkWzwxmX8=; b=p2omNg3CYVihRFs5rxiKiRNkq yw8hmMPIbUilkO8NnehNBeH9ErMEGv/hDnI7x3TqWbblN5fRzTLKmzodnVdQM84f/JMEJeEG2ha8f lXEhP8VPENf8Ez3a1inIyAPzezLJ1d6cMatgFxF33HvdVuEhG4Za6FfoWFBAV5xL5TCA8=; Received: from ypsilon.sirena.org.uk ([2001:470:1f1d:6b5::7]) by heliosphere.sirena.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ht9Z3-0004bG-2n; Thu, 01 Aug 2019 11:48:09 +0000 Received: by ypsilon.sirena.org.uk (Postfix, from userid 1000) id D0D1C2742C47; Thu, 1 Aug 2019 12:48:07 +0100 (BST) Date: Thu, 1 Aug 2019 12:48:07 +0100 From: Mark Brown To: Ali Burak =?utf-8?B?UGFyxLFt?= Subject: Re: Best representation for TDM devices Message-ID: <20190801114807.GB5488@sirena.org.uk> References: MIME-Version: 1.0 In-Reply-To: X-Cookie: Love thy neighbor, tune thy piano. User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190801_044812_121348_B63B6C0F X-CRM114-Status: GOOD ( 11.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: maxime.ripard@bootlin.com, linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============8479657089526854403==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============8479657089526854403== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="61jdw2sOBCFtR2d/" Content-Disposition: inline --61jdw2sOBCFtR2d/ Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 01, 2019 at 01:43:06PM +0200, Ali Burak Par=C4=B1m wrote: > On Thu, Jul 25, 2019 at 03:01:12PM +0200, Maxime Ripard wrote: > > What is the actual hardware - what do the microphones physically look > > like in the system, what functional role do they play? My initial guess > Hardware is a custom board I designed with 4 PDM output microphones > and 2 adau7002 devices as the codec for PDM-to-PCM. We want to do > signal processing with this board. Therefore having separate streams for > each microphone is crucial to the application though I am not sure where > we should implement this exactly. What is this processing - are the streams from these microphones logically related in any way (eg, is this a microphone array)? There's probably going to be some overlap in the input signals at least. If you need to for example correlate different microphones then that's relevant. --61jdw2sOBCFtR2d/ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl1C0XYACgkQJNaLcl1U h9Cztwf9FKPfgvW/+wGPy3tpwq3sitlONdbVvWMfdh7OvzvFryLwSz81lVY4WXsV xNkPRyfygB1a+obdP6jk9627eK1KkNCnoj5TIBK3tN/HN22F0OLWs9PPhbtFbwsZ l7XEUt6JXTNWFxvuDaYl4r6seHBTxNqt6ouWnkp1xzI7R6Lwzp+VorH4E6ncj3fq 3f5XR+kM56PDtXzMWsqFlsxa7u/0U+GwEC5coI6cmicsrmj039i+ENyUNw8PIP9+ LA8/xM7reyl3F/PuV36muT3fYMtoIPZel/0pNUMRDz6omnDEgc1NkxqJAdNIbF3f fqMDYffWxfN6gDMBkpRB2clO+C848w== =9IzM -----END PGP SIGNATURE----- --61jdw2sOBCFtR2d/-- --===============8479657089526854403== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============8479657089526854403==--