From patchwork Tue Nov 21 20:28:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 745933 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b="eEliDDDy" Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0EB321BC; Tue, 21 Nov 2023 12:28:54 -0800 (PST) Received: from p-infra-ksmg-sc-msk02 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id AD4E1120061; Tue, 21 Nov 2023 23:28:52 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru AD4E1120061 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1700598532; bh=zDEN1X49ulmHegSqy3xkzqddWLCXFjmBONcNuN0iK4E=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=eEliDDDyvP14ssDDgHoc784Q48RbZewG4HqI+TEhX3ZKrJqwAPqrxYmXpBLeINe1/ fdvcOxmXLm6is0719XD2ZnA3XR71oaGNWtIfpTVjHjj4+ArM6UUo1HrOueGpD7Fqrn JMFsDRAKlHngbFMUSVyPvIu4JubcuT0eSKiGnlyYs6cWGpB5bNtTn/2hvGPgY3fQre E2wRlC7Jz9NyqEaITHRBm+YG88jTyFi4Ohl+GNaSwk6ZMIKZK1SVgZfmdEJfjlcavW J23t0R9rLDxsgphaYeXQYpm2QHMfYGjgAhJ0gOWoPAP7cfwZfuz6sHnNY9svlcV9bn FAEbWowd1X1TA== 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; Tue, 21 Nov 2023 23:28:52 +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 15.2.1118.40; Tue, 21 Nov 2023 23:28:52 +0300 From: Dmitry Rokosov To: , , , , , CC: , , , , , George Stark , Dmitry Rokosov Subject: [PATCH v4 06/11] leds: aw200xx: add delay after software reset Date: Tue, 21 Nov 2023 23:28:30 +0300 Message-ID: <20231121202835.28152-7-ddrokosov@salutedevices.com> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20231121202835.28152-1-ddrokosov@salutedevices.com> References: <20231121202835.28152-1-ddrokosov@salutedevices.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: 181514 [Nov 21 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: 3 0.3.3 e5c6a18a9a9bff0226d530c5b790210c0bd117c8, {Tracking_from_domain_doesnt_match_to}, 100.64.160.123:7.1.2; 127.0.0.199:7.1.2; p-i-exch-sc-m01.sberdevices.ru:5.0.1,7.1.1; salutedevices.com:7.1.1; 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: 2023/11/21 17:47:00 #22495004 X-KSMG-AntiVirus-Status: Clean, skipped 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 Reviewed-by: Andy Shevchenko --- 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 4bce5e7381c0..bb17e48b3e2a 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); }