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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 C3BDBC433E1 for ; Fri, 29 May 2020 11:18:59 +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 80662207D4 for ; Fri, 29 May 2020 11:18:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Zffcuz+H" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 80662207D4 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.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RDOpPOBaGGZx6xdWTXZGe0ka9iOsF79ebbN5VUohkH8=; b=Zffcuz+HHJudmb Ors0ene8mLnjH2lDlwyf7ExUk6v60HlFLRxsnNI/X9rlJQmHDcvLmWwey0KcN0m2AdBwvxA7flBE9 kll40AgOK/Dd8dpcHS/PobeAqFv5G6LohS9nxwmz/tWdXFMFKYrGkrYzifl732rmeW1gQs7Q0ss3d tnYR1WlPbxY+dxM9CGPPz+7HlJJMyE/vBhL89Dy6IxCUaM/AjERJZCEJu8l4cWkKYfm9ifgspMZOY VmvwGUbrYT7eunyX++suMH8KuasdmaVD4SLrC0YaviQuFJ2/ZqM7HS7Bpi5TeREXzx7+TFarUy3rK Ptu4i6uBQ7hYlhfYE9kQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jed2G-0001k4-NW; Fri, 29 May 2020 11:18:48 +0000 Received: from relay1-d.mail.gandi.net ([217.70.183.193]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jecxP-0003UF-Vl for linux-mtd@lists.infradead.org; Fri, 29 May 2020 11:13:51 +0000 X-Originating-IP: 91.224.148.103 Received: from localhost.localdomain (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay1-d.mail.gandi.net (Postfix) with ESMTPSA id 41C3924000E; Fri, 29 May 2020 11:13:45 +0000 (UTC) From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Subject: [PATCH v7 17/28] mtd: rawnand: timings: Use default values for tPROG_max and tBERS_max Date: Fri, 29 May 2020 13:13:11 +0200 Message-Id: <20200529111322.7184-18-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200529111322.7184-1-miquel.raynal@bootlin.com> References: <20200529111322.7184-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200529_041348_305871_E5EB4709 X-CRM114-Status: GOOD ( 12.99 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Simek , Boris Brezillon , Naga Sureshkumar Relli , Thomas Petazzoni , Miquel Raynal 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 The ONFI parameter page of a chip might define more fine grained tPROG_max and tBERS_max. When we do not have this information, we default to the highest possible values (they are maxima anyway). There is no point setting these fields at runtime, so explicitly move these defaults to the main ONFI SDR timings structure. This way, we will also be able to return a pointer to mode 0 directly when we will create a default reset configuration. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon --- drivers/mtd/nand/raw/nand_timings.c | 31 ++++++++++++++++++----------- 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_timings.c b/drivers/mtd/nand/raw/nand_timings.c index 54c7a1a8b038..efff3583c549 100644 --- a/drivers/mtd/nand/raw/nand_timings.c +++ b/drivers/mtd/nand/raw/nand_timings.c @@ -12,6 +12,13 @@ #define ONFI_DYN_TIMING_MAX U16_MAX +/* + * For non-ONFI chips we use the highest possible value for tPROG and tBERS. + * tR and tCCS will take the default values precised in the ONFI specification + * for timing mode 0, respectively 200us and 500ns. + * + * These four values are tweaked to be more accurate in the case of ONFI chips. + */ static const struct nand_data_interface onfi_sdr_timings[] = { /* Mode 0 */ { @@ -20,6 +27,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 20000, .tALS_min = 50000, @@ -63,6 +72,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 25000, @@ -106,6 +117,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 15000, @@ -149,6 +162,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -192,6 +207,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -235,6 +252,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { .timings.sdr = { .tCCS_min = 500000, .tR_max = 200000000, + .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX, + .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -357,18 +376,6 @@ int onfi_fill_data_interface(struct nand_chip *chip, /* nanoseconds -> picoseconds */ timings->tCCS_min = 1000UL * onfi->tCCS; - } else { - struct nand_sdr_timings *timings = &iface->timings.sdr; - /* - * For non-ONFI chips we use the highest possible value for - * tPROG and tBERS. tR and tCCS will take the default values - * precised in the ONFI specification for timing mode 0, - * respectively 200us and 500ns. - */ - - /* microseconds -> picoseconds */ - timings->tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX; - timings->tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX; } return 0; -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/