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=-8.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 9A23BC43461 for ; Tue, 15 Sep 2020 16:34:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 542F9206BE for ; Tue, 15 Sep 2020 16:34:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600187679; bh=J7nP3T7lsrE/sKq6YXt1lyfPigmOJ4Hm7RJIV5FMhgw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=ql942ofzCv7P60s/I/EoY/x50K96BpMF9b2KHvMM0zO26TrwjTn4JqFSlrOc5C1g+ 7m4ppenNb2kEATrj9zLKtlkR3P8oTRayV/uGZqmhF+LoDRgm3w8iIuVTrK+abAvlsT Z1XlX7xXboXVWWjuqibgw0WQKEODtDxvmtvWVEpk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727725AbgIOQef (ORCPT ); Tue, 15 Sep 2020 12:34:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:51250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727524AbgIOPzn (ORCPT ); Tue, 15 Sep 2020 11:55:43 -0400 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 BE02E206A1; Tue, 15 Sep 2020 15:47:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600184866; bh=J7nP3T7lsrE/sKq6YXt1lyfPigmOJ4Hm7RJIV5FMhgw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qMuxCJINcntVKNrVdGyngDXzCMeQz63bTwZO98dhVLsFCc8OVvxRBT1TLF/bDfQ8u Os5gE23Fx1Rrn7vjOqzGtZEBRfupVjGHHusecAVc4hmsLfnenLgmoYfNtlirO+AZY7 9V0bw8u/X/+259WywbhxGrs7VEErZaPGcjtsbksk= Date: Tue, 15 Sep 2020 16:46:56 +0100 From: Mark Brown To: Alexandre Belloni Cc: Miquel Raynal , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Thomas Petazzoni Subject: Re: [PATCH 3/3] ASoC: tlv320aic32x4: Enable fast charge Message-ID: <20200915154656.GC4913@sirena.org.uk> References: <20200911173140.29984-1-miquel.raynal@bootlin.com> <20200911173140.29984-4-miquel.raynal@bootlin.com> <20200915082602.GH4230@piout.net> <20200915115034.GA5576@sirena.org.uk> <20200915130207.GA9675@piout.net> <20200915141025.GB4913@sirena.org.uk> <20200915161401.54f6d4f3@xps13> <20200915142743.GB9675@piout.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="6zdv2QT/q3FMhpsV" Content-Disposition: inline In-Reply-To: <20200915142743.GB9675@piout.net> X-Cookie: Linux is obsolete User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --6zdv2QT/q3FMhpsV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Sep 15, 2020 at 04:27:43PM +0200, Alexandre Belloni wrote: > On 15/09/2020 16:14:01+0200, Miquel Raynal wrote: > > Indeed, it is just affecting the ramp (peak current is bigger). > However, forcing powerup at probe time versus at play time means that > you consume power even when not playing audio. With older VMID referenced devices like this one seems to be there's usually not really any good tradeoffs. You have to balance audible noise on the outputs when starting audio, idle power consumption and the time taken to get the device live either on starting a stream or boot. Generally for a given device there's a fairly clear optimum and trying to support multiple options makes things more complex and less robust. --6zdv2QT/q3FMhpsV Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl9g4fAACgkQJNaLcl1U h9DdOAf9EVOfUlhMpdtlwozgCQMUiBstCWWdfsHuYkiaenqDqEclIDYnBhtmN2Cc MliADocQVfBqlOkfLxmwSgRoCaHaIc76NuTNqgjtqeU09o/sET6wOiBUPH9GN721 SyBQjncjYFYPbbAg0Fph7wouJOFFNz7kG2mhvGZnDHZNJr5h2cgEbo34uoD29e2W sD2t5jnRUcjnV3u3t25hEcEpAoAhJJ2BZDonislVQTai3qizCU3W0KMFEjKm2jNz tjL/JCUqp8u+Gg5KMCw8r7BTCEXVsFbu51I7OPLiJnPZtjhOyz9P985lJNtn6N0c 9SMOCPxvAKoxhxjwCbg99BTcb3Difw== =lTzY -----END PGP SIGNATURE----- --6zdv2QT/q3FMhpsV--