From patchwork Fri Oct 6 16:04:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 730155 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 A6C96E81E1D for ; Fri, 6 Oct 2023 16:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232939AbjJFQFH (ORCPT ); Fri, 6 Oct 2023 12:05:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232934AbjJFQFF (ORCPT ); Fri, 6 Oct 2023 12:05:05 -0400 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E2F29E; Fri, 6 Oct 2023 09:05:04 -0700 (PDT) Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 40D97100007; Fri, 6 Oct 2023 19:05:02 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 40D97100007 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1696608302; bh=kvcZ+xJnyeYql7Ke/CZt6+RSekM0tFKgAECXglBZbv0=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=oog9KlS66Os+OH0P78FrbWJIbW7kf6V/ifmUHeWRWi+TBIPBQhrtminHQOYftafoA /XIKaEIi90/gaH8x0aETiy3GmLaQRxo8wqUdWtbv6vFVgFsveVCz/bdDEOT94vEbQt 7vwJ73/OYZ3v/mXNCw+l74ZATjfrzNd9IIXH50mbb5UzJGvOkwM4rxdtbFY1c5ekK/ PrDV1/7dzioeuF5FrP0G5uC2xOcjWRl3ZjsboaHMOhsfhJrWLt9kIUKWFryEmc3ipe ylyXRRoChkxK3/nM0UFm3PTFFqNazN1pn+hMLgV2KEPzKN6IvNBgOm6Wrdt102eFRr Bp28RtARY73Tg== 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; Fri, 6 Oct 2023 19:05:02 +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 15.2.1118.30; Fri, 6 Oct 2023 19:05:01 +0300 From: Dmitry Rokosov To: , , , , , CC: , , , , , George Stark , Dmitry Rokosov Subject: [PATCH v1 07/11] leds: aw200xx: add delay after software reset Date: Fri, 6 Oct 2023 19:04:33 +0300 Message-ID: <20231006160437.15627-8-ddrokosov@salutedevices.com> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20231006160437.15627-1-ddrokosov@salutedevices.com> References: <20231006160437.15627-1-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: 180438 [Oct 06 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: 535 535 da804c0ea8918f802fc60e7a20ba49783d957ba2, {Tracking_from_domain_doesnt_match_to}, salutedevices.com:7.1.1; 100.64.160.123:7.1.2; p-i-exch-sc-m01.sberdevices.ru:7.1.1,5.0.1; 127.0.0.199:7.1.2; d41d8cd98f00b204e9800998ecf8427e.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: 2023/10/06 13:25:00 #22070343 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 5b6907eb6299..a1ef0b0a62fc 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 */ + usleep_range(1000, 2000); + regcache_mark_dirty(chip->regmap); return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR); }