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 44A51C433EF for ; Sat, 27 Nov 2021 18:08:56 +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:MIME-Version: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:In-Reply-To:References: List-Owner; bh=34O6ZaCIncp4UfC4cOaoFFGoOt6lfaHp1Z7HEzB5MCc=; b=e/AmLj73SDmBCn YXD6nMPQvBXlrXyBYzAWyt+HpNLVt6idK08lsSYDRf94a4asSxjng5rCXD8GONkiSAj1qMFFgOZXL hC48oiVakTkD7W+okKAx0GvVG8dzSt4TuuC7w2Iw9CCk4vtQNHCqo9moS2Xqu6nsnyyBteC3A3Xcs LQ/s36dk0AsKL8l6R+ynkIMFZ6x6irhr9kLfRPLiWvzkksX5Fuyx6je6lYodihwA9VZ2TE2wj0WxO nt0g7HlMtDAZVmU8V/lzW7EdoNUMD846S+nWPENC4XZy6FFxG7lurtA3HwAEyVDN/j8HD4c1vwQY/ 1x4wjcseBgUc174MkzqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mr27R-00EBOp-Jd; Sat, 27 Nov 2021 18:08:13 +0000 Received: from mail-lj1-x231.google.com ([2a00:1450:4864:20::231]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mr27O-00EBNZ-Lf for linux-mtd@lists.infradead.org; Sat, 27 Nov 2021 18:08:11 +0000 Received: by mail-lj1-x231.google.com with SMTP id d11so25447029ljg.8 for ; Sat, 27 Nov 2021 10:08:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2CoNm0drA3aI7lfneRSUhJcrvL7D1YbjC78jWyeY53I=; b=EGiK9q4xmxtSZ6Mrf7tDzIMrqC3/cJHmg9UJypohzII7Lfe8vo4oUvwUjUO93lmRVt vsnHmC03TxqHBycJMM/3tRQd1L62pb+E4TxKiAA6FYJ81OTf+H25bandB6lSVs6uW4qO 13O89pklmC3wvpkQsapdjMZWkUe4sMgls38E0s0HUSPWnWhQEnQaAMivEFnyIxt/flQa SpRuuXmcD4FHoEYd95n8lS4amIEOgCLs4XOtVGsgQ4JH4TAoXo2isNN+y5g5lIG5P8Jn eybK+yZyfrpFDrG320nGmKoqoF7yI8I5Zgr83eBhK8Zsb0reGJyvsiomVx7XUIynAC8P WB2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2CoNm0drA3aI7lfneRSUhJcrvL7D1YbjC78jWyeY53I=; b=2xl3RcaUMndqW/23cG/YHMA5VMogkB2d/vJeFSZIC7/d7vrUc1mdTJ4v6jXYhTZEt3 f7id4mdoWMfmyzd7WlLKE+DdGG+Nv7vIbGXrEQBYdie4pRBevhOg9pVAij+5DyodcaZG OG5w9oifbYFMCyHjjJqRDuohqbTaXWR4r7wE9UJIj9dx4H4yOya9KbE81q0tqa5YdCSr RQKvqE7UCYf8zUThnhMUNYkNuPWNGvkjf+b3IK1T4mmtopIXUvDELw4rO2gul9tG9TIo nt9m6IjXp3hbAi1Clu1pjrD2P97QBO3TH/hvsHUWpO2FhznN4cgPWuZ131dSG8+LuW3+ D+cQ== X-Gm-Message-State: AOAM5313k4ROwQMPo1ZjeQZEMTzI8LrRw8rGO/W7EucYHVJKfH7z0LnU 8bTeM8GL7bH8MYYASIMvNPg= X-Google-Smtp-Source: ABdhPJyQMYsswPacNEkC8SKE4hJwVUJoWLnn9y6MjPoxRv3q2R6B7vYoDnfzggdgtAC0DF6A7qVv2A== X-Received: by 2002:a2e:a376:: with SMTP id i22mr38977042ljn.201.1638036488063; Sat, 27 Nov 2021 10:08:08 -0800 (PST) Received: from helga-MS-7721.makeup ([31.148.138.103]) by smtp.gmail.com with ESMTPSA id m16sm793142lfj.59.2021.11.27.10.08.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 27 Nov 2021 10:08:07 -0800 (PST) From: Olga Kitaina To: miquel.raynal@bootlin.com Cc: linux-mtd@lists.infradead.org, Olga Kitaina Subject: [PATCH] mtd: rawnand: arasan: Fix clock rate in NV-DDR Date: Sat, 27 Nov 2021 21:07:58 +0300 Message-Id: <20211127180758.30884-1-okitain@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211127_100810_735098_BCCF1A82 X-CRM114-Status: GOOD ( 13.38 ) 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 According to the Arasan NAND controller spec, the flash clock rate for SDR must be <= 100 MHz, while for NV-DDR it must be the same as the rate of the 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. Signed-off-by: Olga Kitaina --- drivers/mtd/nand/raw/arasan-nand-controller.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c index 53bd10738418..ed4ee9942441 100644 --- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -1043,7 +1044,12 @@ static int anfc_setup_interface(struct nand_chip *chip, int target, DQS_BUFF_SEL_OUT(dqs_mode); } - anand->clk = ANFC_XLNX_SDR_DFLT_CORE_CLK; + if (nand_interface_is_sdr) + anand->clk = ANFC_XLNX_SDR_DFLT_CORE_CLK; + else + /* ONFI timings are defined in picoseconds */ + anand->clk = div_u64((u64)NSEC_PER_SEC * 1000, + conf->timings.nvddr.tCK_min); /* * Due to a hardware bug in the ZynqMP SoC, SDR timing modes 0-1 work base-commit: f53d4c109a666bf1a4883b45d546fba079258717 -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/