From patchwork Wed Nov 1 14:24:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 740277 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 C5D9AC07352 for ; Wed, 1 Nov 2023 14:25:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344451AbjKAOZN (ORCPT ); Wed, 1 Nov 2023 10:25:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344406AbjKAOZI (ORCPT ); Wed, 1 Nov 2023 10:25:08 -0400 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4656D118; Wed, 1 Nov 2023 07:25:01 -0700 (PDT) Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id E8D9810002C; Wed, 1 Nov 2023 17:24:59 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru E8D9810002C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1698848699; bh=zGbcaAeoOpRXhpYsG9hnKfwX226reF7uQ3cUGwZXb+E=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=lPijxW4YODL7chgvLNjpvWE4X1nlhoslHsYq+Xl1gsY0EUJFM0JHPMNEU3Y8tYmDH TqrjOFw1pnkizEtV5Y/EJJdSLtAG0l2rj0X1v294l/LfjjRVP1oxtFxzTi5WS0urgh +tn0dsPBkkXSOC0mMVqqOaSPraVOciaIMn4PfY+MOLk8WXB2b2Bmadcu3+70mNSzHM OnWsO38VLNRmNXBTlbIEpY+XW8Vbc53oyEmw4eeaWjZsX9Wmo6HWNzDqEMCw/mmO1z tmIhyqelBUwjyX+ijicQf5uS4Nc2Uez3HypHMzTCZU8n85c4LxVr5/Ed8tvZlJV1uv nx6ysT3/skXFQ== Received: from p-i-exch-sc-m01.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Wed, 1 Nov 2023 17:24:59 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.37; Wed, 1 Nov 2023 17:24:59 +0300 From: Dmitry Rokosov To: , , , , , CC: , , , , , George Stark , Dmitry Rokosov Subject: [PATCH v3 06/11] leds: aw200xx: add delay after software reset Date: Wed, 1 Nov 2023 17:24:40 +0300 Message-ID: <20231101142445.8753-7-ddrokosov@salutedevices.com> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20231101142445.8753-1-ddrokosov@salutedevices.com> References: <20231101142445.8753-1-ddrokosov@salutedevices.com> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 181053 [Nov 01 2023] X-KSMG-AntiSpam-Version: 6.0.0.2 X-KSMG-AntiSpam-Envelope-From: ddrokosov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 543 543 1e3516af5cdd92079dfeb0e292c8747a62cb1ee4, {Tracking_from_domain_doesnt_match_to}, 127.0.0.199:7.1.2; salutedevices.com:7.1.1; p-i-exch-sc-m01.sberdevices.ru:5.0.1,7.1.1; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; 100.64.160.123:7.1.2, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/11/01 13:00:00 #22378131 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org From: George Stark According to datasheets of aw200xx devices software reset takes at least 1ms so add delay after reset before issuing commands to device. Signed-off-by: George Stark Signed-off-by: Dmitry Rokosov --- drivers/leds/leds-aw200xx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c index aab8898b0330..ae3b4a96c52c 100644 --- a/drivers/leds/leds-aw200xx.c +++ b/drivers/leds/leds-aw200xx.c @@ -321,6 +321,9 @@ static int aw200xx_chip_reset(const struct aw200xx *const chip) if (ret) return ret; + /* according to datasheet software reset takes at least 1ms */ + fsleep(1000); + regcache_mark_dirty(chip->regmap); return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR); }