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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2FA10C25B67 for ; Thu, 26 Oct 2023 18:11:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231250AbjJZSLh (ORCPT ); Thu, 26 Oct 2023 14:11:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbjJZSLe (ORCPT ); Thu, 26 Oct 2023 14:11:34 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A5A049C for ; Thu, 26 Oct 2023 11:11:32 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3752C433C7; Thu, 26 Oct 2023 18:11:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1698343892; bh=zAjZWYKj0X+TeoQ8BBUh2QjPiWJbCoaFCclLInGxZek=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=U6650vGaeoBL/T54vbOKjzWtko9dk+h0R1MRIYz11PbdSkogb6xFPRiNUfo7EzXOr Q4I5i0hMEFOGmmQSfsw3zDJ4mYwr+L0P/nHEhLY62GKkZSQYDHIL7EPte9QdinP5yY Y9gCtybfrCmHL58tFSzbUrRFW5c001TDKk1JbbN/wzFR72hvhcPu0zKhRn3jiSZNUf zB1wTIh6r4NQOo78uyain9fwBDPQvK0xSwQK6sgmBgDFz0BhSrUk5h38sl7W/oCNp3 y1ONym/aUFm4xmqDN8OkS1qxTnDbStIzmds5C81nr1kFbI5Q3TGunJRfSan9Se01CE SsIKvsAPQ2ERw== Date: Thu, 26 Oct 2023 19:11:22 +0100 From: Mark Brown To: Rob Herring Cc: Chancel Liu , lgirdwood@gmail.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, perex@perex.cz, tiwai@suse.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v4 1/2] ASoC: dt-bindings: sound-card-common: List sound widgets ignoring system suspend Message-ID: <3242e162-bb0d-441c-af29-7c08e1f67d1f@sirena.org.uk> References: <20231023020718.1276000-1-chancel.liu@nxp.com> <20231026175842.GA4101469-robh@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="HTcFwXshOgNI0QFq" Content-Disposition: inline In-Reply-To: <20231026175842.GA4101469-robh@kernel.org> X-Cookie: I'm also against BODY-SURFING!! Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --HTcFwXshOgNI0QFq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 26, 2023 at 12:58:42PM -0500, Rob Herring wrote: > On Mon, Oct 23, 2023 at 10:07:17AM +0800, Chancel Liu wrote: > > Add a property to list audio sound widgets which are marked ignoring > > system suspend. Paths between these endpoints are still active over > > suspend of the main application processor that the current operating > > system is running. > Perhaps it would be better to define components used for low power=20 > audio rather than the OS mode that gets used. Isn't LPA just audio=20 > handling that doesn't require the OS CPU to be involved? So the state of= =20 > the CPU is kind of orthogonal. Not really - you can have bypass paths that don't touch the AP but which will have the power cut if the AP goes into suspend and it can be a system integration decision which components that will be true for. Often it's an inflexible PMIC/MCU setup managing the lowest system power states. The pure low power audio bit we should already be able to figure out. --HTcFwXshOgNI0QFq Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmU6q8kACgkQJNaLcl1U h9AzFQgAhv1kIvshMwNbebl4YEDMqA368X4czYNC+zO/doeKPvpLr3ox2HGnTWmR Nyf4K8yUD5JQDrNir/c/SYLXWQAr4sq5vnn2MyQw3z3LP8TBxG3NM7AiKqEqxQEj QDIfhI8Izt/86k0FnoS8WVOwK5wbcM8b+HJ3bdo7/b1oA00dVVc3f1dCAHQZHz+U w+zHZGAY4BBW8gw3tFbGNvNW5AEQUDCHKZbUDECM+PXDVLAUFKrpEz4uho7A4Bq2 LzyGissKaKgzmNDlwvw7yoMEMa51n5nwYCbUSM7B1OmFqYapFpZ+w18Dzqi0KDsS Eto0aoVQorOv0Qf3Y0rPwaHwhcW3yg== =z+Ib -----END PGP SIGNATURE----- --HTcFwXshOgNI0QFq--