From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752656AbdIAViQ (ORCPT ); Fri, 1 Sep 2017 17:38:16 -0400 Received: from mail-bl2nam02on0137.outbound.protection.outlook.com ([104.47.38.137]:45625 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752503AbdIAViP (ORCPT ); Fri, 1 Sep 2017 17:38:15 -0400 From: Ryan Lee To: Mark Brown CC: "lgirdwood@gmail.com" , "perex@perex.cz" , "tiwai@suse.com" , "kuninori.morimoto.gx@renesas.com" , "alsa-devel@alsa-project.org" , "linux-kernel@vger.kernel.org" , "ryan.lee.maxim@gmail.com" Subject: RE: [PATCH 2/9] ASoC: max98927: Added controls for Envelope tracking Thread-Topic: [PATCH 2/9] ASoC: max98927: Added controls for Envelope tracking Thread-Index: AQHTIFXIW2gJ5z7xQECiRg52pGitIaKeXDCAgAI4XdA= Date: Fri, 1 Sep 2017 21:38:13 +0000 Message-ID: References: <1503963061-14763-1-git-send-email-ryans.lee@maximintegrated.com> <1503963061-14763-2-git-send-email-ryans.lee@maximintegrated.com> <20170831114357.dekzz4wa7j6vqi4t@sirena.org.uk> In-Reply-To: <20170831114357.dekzz4wa7j6vqi4t@sirena.org.uk> Accept-Language: en-US, ko-KR Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=RyanS.Lee@maximintegrated.com; 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x-forefront-prvs: 0417A3FFD2 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(39860400002)(189002)(377454003)(13464003)(199003)(24454002)(8676002)(25786009)(229853002)(6116002)(102836003)(3846002)(72206003)(81156014)(39060400002)(7696004)(81166006)(189998001)(7736002)(77096006)(97736004)(2950100002)(6506006)(6916009)(5660300001)(6436002)(345774005)(575784001)(86362001)(478600001)(105586002)(101416001)(53936002)(110136004)(3280700002)(106356001)(3660700001)(2906002)(76176999)(54356999)(55016002)(50986999)(66066001)(4326008)(8936002)(305945005)(2900100001)(6246003)(74316002)(54906002)(68736007)(9686003)(14454004)(99286003)(33656002);DIR:OUT;SFP:1102;SCL:1;SRVR:BY2PR11MB0648;H:BY2PR11MB0837.namprd11.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;MX:1;A:1;LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-OriginatorOrg: maximintegrated.com X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Sep 2017 21:38:13.6106 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: fbd909df-ea69-4788-a554-f24b7854ad03 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR11MB0648 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id v81LcKrP016181 >-----Original Message----- >From: Mark Brown [mailto:broonie@kernel.org] >Sent: Thursday, August 31, 2017 4:44 AM >To: Ryan Lee >Cc: lgirdwood@gmail.com; perex@perex.cz; tiwai@suse.com; >kuninori.morimoto.gx@renesas.com; alsa-devel@alsa-project.org; linux- >kernel@vger.kernel.org; ryan.lee.maxim@gmail.com >Subject: Re: [PATCH 2/9] ASoC: max98927: Added controls for Envelope tracking > >On Mon, Aug 28, 2017 at 04:30:54PM -0700, Ryan Lee wrote: > >> /* Envelope Tracking configuration */ >> regmap_write(max98927->regmap, >> MAX98927_R0082_ENV_TRACK_VOUT_HEADROOM, >> - 0x08); >> + 0x0A); >> regmap_write(max98927->regmap, >> MAX98927_R0086_ENV_TRACK_CTRL, >> 0x01); >> - regmap_write(max98927->regmap, >> - MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ, >> - 0x10); > >Why are we changing the defaults here? It was understandable to have a fixed >default that differed from the chip value when there was no control but now >there is a control and we're changing the default again for some undocumented >reason. It'd be better to leave the values here to avoid breaking compatibility >with existing users and let users who need different values change things using >the newly added controls. Thank you for feedback. Let me keep existing value. I still need to remove regmap_write for R:0x87 because it is read-only register.