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 X-Spam-Level: X-Spam-Status: No, score=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCF89C2B9F7 for ; Wed, 26 May 2021 10:14:28 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 92781613AB for ; Wed, 26 May 2021 10:14:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 92781613AB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org 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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=G0gz91u/dggWD9+MoSBBys6QKAqdRD/iM1tja2KKcHo=; b=fUV+hqJxyLobzn 5Eridr0SGwASxqo6Da7wpfwiQoFqpcVmYmNRK2mZ7FtCQIYNuWvqWyfUzlJQVIza4dwVsDQ9u8ED5 iJNOUdvMX/8hRFjwxI3Bh9XrT1FLyxaQmx6H3gjBPJXN/E8UOz/a91WLyoU+qvvIj8LmOZ9o2MkvV TPQ7RkcyKM5Dsfn78BLBVDrRAUWHajuJECauB+6HixZoevnl7tngrONAZ0tOxJSUVJNwqGuRe2ay1 TqxkW2sZmHD9IwHQQ0snzYbwrd7cssgyfHpV3nq56iF/lemBfPyfgrumvZnn23f1rfZcyxY/f34Gs kc4i7D+rp6NgJLHBBAtg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1llqXZ-00D7hd-Ug; Wed, 26 May 2021 10:13:30 +0000 Received: from relay6-d.mail.gandi.net ([217.70.183.198]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1llpSn-00CiTo-Ae for linux-mtd@lists.infradead.org; Wed, 26 May 2021 09:04:31 +0000 Received: (Authenticated sender: miquel.raynal@bootlin.com) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id 8FEFDC0002; Wed, 26 May 2021 09:04:26 +0000 (UTC) From: Miquel Raynal To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , linux-mtd@lists.infradead.org Cc: Thomas Petazzoni , Michal Simek , Naga Sureshkumar Relli , Amit Kumar Mahapatra Subject: Re: [PATCH 13/22] mtd: rawnand: Access SDR and NV-DDR timings through a common macro Date: Wed, 26 May 2021 11:04:26 +0200 Message-Id: <20210526090426.181884-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210505213750.257417-14-miquel.raynal@bootlin.com> References: MIME-Version: 1.0 X-linux-mtd-patch-notification: thanks X-linux-mtd-patch-commit: b'd7a773e8812bcf7a5412e4baebc6eb1c11242551' X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210526_020429_563259_081CC2FC X-CRM114-Status: GOOD ( 13.74 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On Wed, 2021-05-05 at 21:37:41 UTC, Miquel Raynal wrote: > Most timings related to the bus timings are different between SDR and > NV-DDR. However, we identified 9 individual timings which are more > related to the NAND chip internals. These are common between the two > interface types. Fortunately, only these common timings are being shared > through the NAND core and its ->exec_op() interface, which allows the > writing of a simple macro checking the interface type and depending on > it, returning either the relevant SDR timing or the NV-DDR timing. This > is the purpose of the NAND_COMMON_TIMING_PS() macro. > > As all this is evaluated at build time, one will immediately be notified > in case a non common timing is being accessed through this macro. > > Two handy macros are also inserted at the same time, which use > PSEC_TO_NSEC or PSEC_TO_MSEC so that it is very easy to return timings > in milli-, nano- or pico-seconds, as usually requested by the internal > API. > > Signed-off-by: Miquel Raynal Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next. Miquel ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/