From patchwork Wed Oct 5 13:51:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petr Kulhavy X-Patchwork-Id: 9363083 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4035C600C8 for ; Wed, 5 Oct 2016 15:03:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 28EC728665 for ; Wed, 5 Oct 2016 15:03:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1DAF728A56; Wed, 5 Oct 2016 15:03:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 29E4328665 for ; Wed, 5 Oct 2016 15:03:11 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 19C1E261740; Wed, 5 Oct 2016 17:03:09 +0200 (CEST) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 8B4E4266638; Wed, 5 Oct 2016 17:00:45 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 3DF272665E5; Wed, 5 Oct 2016 15:51:32 +0200 (CEST) Received: from fep23.mx.upcmail.net (fep23.mx.upcmail.net [62.179.121.43]) by alsa0.perex.cz (Postfix) with ESMTP id B48382665C3 for ; Wed, 5 Oct 2016 15:51:21 +0200 (CEST) Received: from edge03.upcmail.net ([192.168.13.238]) by viefep23-int.chello.at (InterMail vM.8.01.05.21 201-2260-151-156-20141103) with ESMTP id <20161005135121.LSRI12996.viefep23-int.chello.at@edge03.upcmail.net> for ; Wed, 5 Oct 2016 15:51:21 +0200 Received: from localhost.localdomain ([83.150.41.162]) by edge03.upcmail.net with edge id rprH1t00x3VvXnX01prKic; Wed, 05 Oct 2016 15:51:19 +0200 X-SourceIP: 83.150.41.162 X-Authenticated-Sender: brain@hispeed.ch From: Petr Kulhavy To: broonie@kernel.org, lgirdwood@gmail.com Date: Wed, 5 Oct 2016 15:51:04 +0200 Message-Id: <1475675467-5575-2-git-send-email-brain@jikos.cz> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1475675467-5575-1-git-send-email-brain@jikos.cz> References: <1475675467-5575-1-git-send-email-brain@jikos.cz> Cc: alsa-devel@alsa-project.org, Petr Kulhavy Subject: [alsa-devel] [PATCH v2 1/4] ASoC: tas571x: extend the t_i2c time to comply with TAS5721 X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP TAS5721 datasheet recommends to wait at least 13.5ms after deasserting the RESET signal. For TAS5717 this time is only 12ms, which was the original value in the code. Extend the wait time after deasserting RESET from 12 to 13.5ms to comply with the TAS5721 specification. Signed-off-by: Petr Kulhavy --- sound/soc/codecs/tas571x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/tas571x.c b/sound/soc/codecs/tas571x.c index e996313..4d61357 100644 --- a/sound/soc/codecs/tas571x.c +++ b/sound/soc/codecs/tas571x.c @@ -748,7 +748,7 @@ static int tas571x_i2c_probe(struct i2c_client *client, /* pulse the active low reset line for ~100us */ usleep_range(100, 200); gpiod_set_value(priv->reset_gpio, 0); - usleep_range(12000, 20000); + usleep_range(13500, 20000); } ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);