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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 E113EC43460 for ; Mon, 19 Apr 2021 13:32:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A98E26101C for ; Mon, 19 Apr 2021 13:32:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240018AbhDSNcb (ORCPT ); Mon, 19 Apr 2021 09:32:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:34012 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241600AbhDSNXG (ORCPT ); Mon, 19 Apr 2021 09:23:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id AD69761404; Mon, 19 Apr 2021 13:18:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1618838316; bh=e154lqVO9oElPdjoFdpawQRn0llCujhO1nnsLp8zZZI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vE37eBjw4zYKGDGrDGRuZV3fYHCPKvspkoC+uKuXU850Zgi+JcnZebRZ/efaUYoMv gW0HalZ27YS0oawzLB9JuTDyneb38+m1VqqZPzk+DopPwNngXuIfa6JnF8UsOe0140 44trwmD8P/+7dLVHnwEYHw6aHscImOLH0YPjJf28= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ryan Lee , Mark Brown , Sasha Levin Subject: [PATCH 5.4 17/73] ASoC: max98373: Added 30ms turn on/off time delay Date: Mon, 19 Apr 2021 15:06:08 +0200 Message-Id: <20210419130524.383331979@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210419130523.802169214@linuxfoundation.org> References: <20210419130523.802169214@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ryan Lee [ Upstream commit 3a27875e91fb9c29de436199d20b33f9413aea77 ] Amp requires 10 ~ 30ms for the power ON and OFF. Added 30ms delay for stability. Signed-off-by: Ryan Lee Link: https://lore.kernel.org/r/20210325033555.29377-2-ryans.lee@maximintegrated.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/max98373.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c index 96718e3a1ad0..16fbc9faed90 100644 --- a/sound/soc/codecs/max98373.c +++ b/sound/soc/codecs/max98373.c @@ -410,11 +410,13 @@ static int max98373_dac_event(struct snd_soc_dapm_widget *w, regmap_update_bits(max98373->regmap, MAX98373_R20FF_GLOBAL_SHDN, MAX98373_GLOBAL_EN_MASK, 1); + usleep_range(30000, 31000); break; case SND_SOC_DAPM_POST_PMD: regmap_update_bits(max98373->regmap, MAX98373_R20FF_GLOBAL_SHDN, MAX98373_GLOBAL_EN_MASK, 0); + usleep_range(30000, 31000); max98373->tdm_mode = false; break; default: -- 2.30.2