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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 81F20C61DA4 for ; Thu, 16 Feb 2023 14:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; 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=LFILI1dTQ01sv1EO4ZHay5KSymV3r+0KzcB5qiBKKp8=; b=BwpleGIiqY9EMYeRIZqU4+9omv ClERv7OSYDJj4mH40kTQqP+qIAcDcco9i9ZMYEPOF+hjQrmWYx6BV1Si/p0cMhMJsorBS0M/L9Mtg joGrImxkZFhmgMhhJhSN7pMIwBCIGUPs66DRwx3xYnKYAv5uByArHvgGzQ00mJRg9fhK2hDQiEPq9 t1ILmUYqPtpRzFyqlSFOYwKImCEOCPksRrq7bVZ588tXVtTcsEgXaticPlmORDdMqbjpkiwQR/AMc 83oD+r438afyzfjb0D1TkxksxiC8QtLDLBazrp4pKi8pRGErePAEU99Z3fz4bJbbfU4vwG1NJzEC8 uWOXYylw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSfX4-00AiuE-MG; Thu, 16 Feb 2023 14:46:46 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSfX1-00AitL-04 for linux-arm-kernel@lists.infradead.org; Thu, 16 Feb 2023 14:46:44 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 83715B82845; Thu, 16 Feb 2023 14:46:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98418C433D2; Thu, 16 Feb 2023 14:46:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676558800; bh=LCnYvIINjyxCa3G+TEGs6sBnENrcAhNBZIdvdQRNokM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dWikivDp9g3uqJMnhF5qkq9wSlzEUtynfuG1Py8cYJC4MBSyICywQ+WoX9BB+DvxX s5KjPz6w8/VFI8UBwrD9wzm7IItOP9ei3SwC7c9X1LHl22BF2optDGqNESNad8gaJ4 3d8wujLi88RxAbY/ni8u+HAzbtvonJjG+2WfO9jzQx/iL5DCdZcKJKt8PYgqWKzl+r bXJuB/cPvEt/4b6zYg17Ofhr6EzC7GM9z4s5AY9J+EDETJz+P/DM5oVm/4QDgrLFTG c3EYCxCnY1Jlu8rcZcehKtLlzFC8BhJkX4N2ecPLeXrqcGma2/VoyUkl5HFm/5VWRC 1IzvqH7ImqfOQ== Date: Thu, 16 Feb 2023 14:46:36 +0000 From: Mark Brown To: Krzysztof Kozlowski Subject: Re: [PATCH 2/3] ASoC: dt-bindings: sama7g5-pdmc: add microchip,startup-delay-us binding Message-ID: References: <20230214161435.1088246-1-claudiu.beznea@microchip.com> <20230214161435.1088246-3-claudiu.beznea@microchip.com> <485d74fe-bfb5-c55e-724f-304476624abd@linaro.org> <954cdf90-c41a-4e21-31e0-88a0baf26065@microchip.com> MIME-Version: 1.0 In-Reply-To: X-Cookie: Serving suggestion. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230216_064643_225592_99E9FBFD X-CRM114-Status: GOOD ( 16.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, alexandre.belloni@bootlin.com, lars@metafoo.de, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, tiwai@suse.com, lgirdwood@gmail.com, perex@perex.cz, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, Claudiu.Beznea@microchip.com, linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============4867359716051011031==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============4867359716051011031== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="TxVDayxViJvYQhLz" Content-Disposition: inline --TxVDayxViJvYQhLz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Feb 16, 2023 at 11:18:16AM +0100, Krzysztof Kozlowski wrote: > On 16/02/2023 11:15, Claudiu.Beznea@microchip.com wrote: > >>> + microchip,startup-delay-us: > >>> + description: | > >>> + Specifies the delay in microseconds that needs to be applied after > >>> + enabling the PDMC microphones to avoid unwanted noise due to microphones > >>> + not being ready. > >> Is this some hardware delay? Or OS? If OS, why Linux specific delay is > >> put into DT? > > It's the delay used in software workaround that IP needs to filter noises. > Then this sounds like OS? Linux related properties usually do not belong > to DT. This is a hardware property, it's the time needed for the input to settle. --TxVDayxViJvYQhLz Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmPuQcwACgkQJNaLcl1U h9AmJQf/TgHpEIGKbPryBe3ZR4YcUQhPbFNTGdI63vitiShh+bX3JzzEnswt6j41 /RVENFOLuUfoh9viCWf/ulK9vT4YCfwsz2nZ1OHdFGkoJQ+loNNutpcgVUXUgmy/ YSBs3uvJv1OCTM+1pPfzyiMKLK/ycbwrEi7N/xL8SDSZyW0DKLJCJgw/yjGEDNvg WYOi3VMr0Eo1SeJaPej+o8+BKHh63GBLvOwlMoMKT9YALS+pQtEAWdysVGfL4i1h JKpQHC3o5DDRT7qgAVhRLD1w7I26PdJZUJVB4ADbrnWjFQpKyV0Nvi517eaBKeTO mPTUYrEw348SwZ872VcV384YXSFffQ== =Ijuf -----END PGP SIGNATURE----- --TxVDayxViJvYQhLz-- --===============4867359716051011031== 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 --===============4867359716051011031==--