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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F2E85C433F5 for ; Sun, 21 Nov 2021 09:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=BtiKRvCJDpEaR5tczySTTCxG+nfne/Sihimx9YtspHs=; b=Tww8DnJfNl+/YR wtw5NTpapoORxvJHTTtPb+4Gy2C9s35nwYRtgPZxKxYOjXsp353KY9t+Y9F81cc+DsprUqAK/92ob HR5plSIdZ/UDmCUwv+0bTWvhOKcSt2poZ4L2FB00GCOdBhNegVITbA3UyQttusEowfFp9xLLGkA4a EzGZqNTPPExAqyoaEyQqdzAkDs4vCaszxq4kXR/3Pcm5/dL5XjvomCMl/nCSbRFu4s2M5iCl0Y2LV +msZoPenWvtaoy+SSCZAKAT9hsZnVkO8b25UWmMMJNnxYmGIW1kpoyxuXrgfUdHPhIYeCg2+VJsjF Xa9NYz1iUKiicw4DNdTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1moiyq-00DPBq-Cj; Sun, 21 Nov 2021 09:17:48 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1moiym-00DPBT-7l for linux-arm-kernel@lists.infradead.org; Sun, 21 Nov 2021 09:17:45 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id BE11560C49; Sun, 21 Nov 2021 09:17:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637486263; bh=8ODT3lpmGxpqhucq5wEa0vqwkac8CvlsvfAS4mIdHmI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fRsUNXMpSy09/9+h7UpeAqPmUXorYsdI62gdr+HUfWb94EkJ1RYVxSde1aGcuUWFP o5+nUjCeFkD+Q/mL4/oA3q8PJ9oSyKOQtcfFXTaUFBNEYBZfTB0SXPXi0xj9NXekbd Ebun0cBqrjt+9xePkhc95evcT4ZdaVEr6kMHPkIdAGK7bGxoci8qb6MP1cVM4PjAPa PlYyj6IfT2cPZDZtZvn4+poXev/IQHsphYD7+w7AirDvdq8a9+yWHcBtQ/+3/SnsaF qSwpnLv7JGWKYPGzN1ZU+ihMyEKzr49j+fKmzNd8MZGd/Qvw8DAtLdzFEsOI/VTLBw M1OtpYCxFOgwg== Date: Sun, 21 Nov 2021 17:17:38 +0800 From: Shawn Guo To: Meng Li Cc: leoyang.li@nxp.com, robh+dt@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: Re: [PATCH] arch: arm64: dts: add delay between CS and CLK signal for flash device Message-ID: <20211121091738.GO31998@dragon> References: <20211103033838.16015-1-Meng.Li@windriver.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20211103033838.16015-1-Meng.Li@windriver.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211121_011744_315670_A296D439 X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Nov 03, 2021 at 11:38:38AM +0800, Meng Li wrote: > Based on commit d59c90a2400f("spi: spi-fsl-dspi: Convert > TCFQ users to XSPI FIFO mode ") and 6c1c26ecd9a3("spi: > spi-fsl-dspi: Accelerate transfers using larger word size if possible"), > on ls1043a-rdb platform, the spi work mode is changed from TCFQ > mode to XSPI mode. In order to keep the transmission sequence matches > with flash device, it is need to add delay between CS and CLK signal. > The strategy of generating delay value refers to QorIQ LS1043A > Reference Manual. > > Signed-off-by: Meng Li Updated the subject as below and applied the patch. arm64: dts: fsl-ls1043a-rdb: add delay between CS and CLK signal for flash device Shawn _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel