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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5172BC77B7C for ; Thu, 11 May 2023 12:10:36 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 52E6385E00; Thu, 11 May 2023 14:10:34 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="ES0T71Ut"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id B4CC7860EF; Thu, 11 May 2023 14:10:32 +0200 (CEST) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id A114485E00 for ; Thu, 11 May 2023 14:10:30 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=rogerq@kernel.org Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B750764C84; Thu, 11 May 2023 12:10:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 641A7C433EF; Thu, 11 May 2023 12:10:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683807027; bh=kQZnufyWwAB9KYgEDn9UZZGKI3X+XekQBmvIMh6awgc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ES0T71Ut+r7P1OezUmc4ZWznuJO0/HbRoJcABMzQLvD+2ACS+QnJ3VyuFTCINNsr7 xZdJBUrjahScr1vCqQL8Wck0+y4v6KObMBUHcEGHUr0O9GKz6PpGtyKQ0kGOKHvYa1 npeTNvj+p6MEwou0HOSHXjrrJ7o1XmCPPnDWkql9B+MjcLY0A95VGFZyEjfDhxE9Aq 3iXg7Fo+OC1Mej++RczHsQF7/JKbbukX9WUMajWXTAlSmWs8RUISV4uA4ZQ2CEkAmy 4wAtG51g9wzXWWexaK1BDxQCztOGy1YCUVJtnBuoILWPdmwmXbTqqDP/B4cDSH62fY I2Mgk0a2ZqEMw== Message-ID: Date: Thu, 11 May 2023 15:10:23 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: [PATCH] usb: cdns3: gadget.c: Set fast access bit To: Ravi Gunasekaran , marex@denx.de Cc: u-boot@lists.denx.de References: <20230505121353.23486-1-r-gunasekaran@ti.com> Content-Language: en-US From: Roger Quadros In-Reply-To: <20230505121353.23486-1-r-gunasekaran@ti.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean On 05/05/2023 15:13, Ravi Gunasekaran wrote: > From: Aswath Govindraju > > When the device port is in a low power state [U3/L2/Not Connected], > accesses to usb device registers may take a long time. This could lead to > potential core hang when the controller registers are accessed after the > port is disabled by setting DEVDS field. Setting the fast register access > bit ensures that the PHY clock is keeping up in active state. > > Therefore, set fast access bit to ensure the accesses to device registers > are quick even in low power states. > > Signed-off-by: Aswath Govindraju Reviewed-by: Roger Quadros