From nobody Mon Sep 29 21:09:03 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F27AC00140 for ; Mon, 15 Aug 2022 22:15:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345242AbiHOWPh (ORCPT ); Mon, 15 Aug 2022 18:15:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52690 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345293AbiHOWOO (ORCPT ); Mon, 15 Aug 2022 18:14:14 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6C6C11C95D; Mon, 15 Aug 2022 12:39:22 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id A7F88B80EA8; Mon, 15 Aug 2022 19:39:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E66C5C433C1; Mon, 15 Aug 2022 19:39:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660592347; bh=/ETDo4V7GPQUwRsVjK5Nh+gt4dXLrxqWmPgcWmO53ls=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PmD8KJYLsItxQpWWlQoX9PXwlCYkzV0OLpTv9TBJVNNDkMXXTWtt2kFsNBc+Hhlyc KHhYkfjXdTzAze53rf8c8JmBBAiIxJQVoPRvLf8rNQ6kRF9a+6dkKTitaUZYRT2zrr banKzdCBYk3bvB0XSUNQedIcDvxo5dn4rotOI8us= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Olga Kitaina , Amit Kumar Mahapatra , Miquel Raynal Subject: [PATCH 5.19 0097/1157] mtd: rawnand: arasan: Fix clock rate in NV-DDR Date: Mon, 15 Aug 2022 19:50:53 +0200 Message-Id: <20220815180443.493266864@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180439.416659447@linuxfoundation.org> References: <20220815180439.416659447@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Olga Kitaina commit e16eceea863b417fd328588b1be1a79de0bc937f upstream. According to the Arasan NAND controller spec, the flash clock rate for SDR must be <=3D 100 MHz, while for NV-DDR it must be the same as the rate of t= he CLK line for the mode. The driver previously always set 100 MHz for NV-DDR, which would result in incorrect behavior for NV-DDR modes 0-4. The appropriate clock rate can be calculated from the NV-DDR timing parameters as 1/tCK, or for rates measured in picoseconds, 10^12 / nand_nvddr_timings->tCK_min. Fixes: 197b88fecc50 ("mtd: rawnand: arasan: Add new Arasan NAND controller") CC: stable@vger.kernel.org # 5.8+ Signed-off-by: Olga Kitaina Signed-off-by: Amit Kumar Mahapatra Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20220628154824.12222-3-amit.kumar-m= ahapatra@xilinx.com Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/arasan-nand-controller.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -1043,7 +1043,13 @@ static int anfc_setup_interface(struct n DQS_BUFF_SEL_OUT(dqs_mode); } =20 - anand->clk =3D ANFC_XLNX_SDR_DFLT_CORE_CLK; + if (nand_interface_is_sdr(conf)) { + anand->clk =3D ANFC_XLNX_SDR_DFLT_CORE_CLK; + } else { + /* ONFI timings are defined in picoseconds */ + anand->clk =3D div_u64((u64)NSEC_PER_SEC * 1000, + conf->timings.nvddr.tCK_min); + } =20 /* * Due to a hardware bug in the ZynqMP SoC, SDR timing modes 0-1 work