From patchwork Wed Oct 18 18:29:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 736840 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 BE328CDB483 for ; Wed, 18 Oct 2023 18:30:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344849AbjJRSaI (ORCPT ); Wed, 18 Oct 2023 14:30:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344858AbjJRSaH (ORCPT ); Wed, 18 Oct 2023 14:30:07 -0400 Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C5FF119; Wed, 18 Oct 2023 11:30:04 -0700 (PDT) Received: from p-infra-ksmg-sc-msk02 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 12D41120010; Wed, 18 Oct 2023 21:30:03 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 12D41120010 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1697653803; bh=WZpnrPUuzlgVUF8g8+DGIMsk+vszli4Ktw5WAkDwyeA=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=V7wcwg5tJvPl0duml3R6sJBcKN46ZXVPjbeEL0CjqgTUgkiWylIGJ+zBLONyrU58e 8RV+8m9kvv4+eZyZJFtnYD+GmFOAxh9paCYqYwowqiHiEL+mRzWF1SZt3pBNc579+D LsM4RdwfSE3zaZbNGhZ3GIENHTYh0V2+yO9T7O2KffEFJnzLFBzlZZDmMZBdNIp+8l x98x8P8AnQ+HLFz3ywQijmRrDKAsdXlDHxDy0l2PxI3XfJ2pff5I5RGcnAG6MDk7VO 48As6J9muiQ0e2EeD5C41tbkGrBZBekvjRLt9jk+LPx2Ys0syttvfGUJHNJs7sg1sf JZVdTYtDdittQ== 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, 18 Oct 2023 21:30:02 +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, 18 Oct 2023 21:29:57 +0300 From: Dmitry Rokosov To: , , , , , CC: , , , , , George Stark , Dmitry Rokosov Subject: [PATCH v2 06/11] leds: aw200xx: add delay after software reset Date: Wed, 18 Oct 2023 21:29:38 +0300 Message-ID: <20231018182943.18700-7-ddrokosov@salutedevices.com> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20231018182943.18700-1-ddrokosov@salutedevices.com> References: <20231018182943.18700-1-ddrokosov@salutedevices.com> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) 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: 180713 [Oct 18 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: 541 541 6f62a06a82e8ec968d29b8e7c7bba6aeceb34f57, {Tracking_from_domain_doesnt_match_to}, 127.0.0.199:7.1.2; p-i-exch-sc-m01.sberdevices.ru:7.1.1,5.0.1; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; 100.64.160.123:7.1.2; salutedevices.com:7.1.1, 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: 2023/10/18 17:21:00 #22224798 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 1 ms 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 a2a31b8e623e..77760406abbf 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 1 ms */ + fsleep(1000); + regcache_mark_dirty(chip->regmap); return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR); }