From patchwork Wed Sep 26 22:07:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 10616983 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3B02A15A6 for ; Wed, 26 Sep 2018 22:08:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2B5312B874 for ; Wed, 26 Sep 2018 22:08:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1EF922B87E; Wed, 26 Sep 2018 22:08:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C3B282B874 for ; Wed, 26 Sep 2018 22:08:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726914AbeI0EXQ (ORCPT ); Thu, 27 Sep 2018 00:23:16 -0400 Received: from mail-out.m-online.net ([212.18.0.9]:57982 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727026AbeI0EXP (ORCPT ); Thu, 27 Sep 2018 00:23:15 -0400 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 42LBs63tdjz1qxy2; Thu, 27 Sep 2018 00:08:10 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 42LBs63QBxz1qql9; Thu, 27 Sep 2018 00:08:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id Xw99BNNE2cJ7; Thu, 27 Sep 2018 00:08:08 +0200 (CEST) X-Auth-Info: RTW0KObLlgTB2RenOxqEUUWGX3ReabjVPGTaVElirp0= Received: from localhost.localdomain (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Thu, 27 Sep 2018 00:08:08 +0200 (CEST) From: Lukasz Majewski To: Frieder Schrempf , boris.brezillon@bootlin.com, Mark Rutland Cc: linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, yogeshnarayan.gaur@nxp.com, richard@nod.at, Stefan Agner , Fabio Estevam , Fabio Estevam , prabhakar.kushwaha@nxp.com, han.xu@nxp.com, broonie@kernel.org, david.wolfe@nxp.com, computersforpeace@gmail.com, dwmw2@infradead.org, albert.aribaud@3adev.fr, Lukasz Majewski Subject: [RFC/RFT PATCH v1 5/9] mtd: spi: Provide LUT entry to perform DUAL read Date: Thu, 27 Sep 2018 00:07:35 +0200 Message-Id: <20180926220739.620-6-lukma@denx.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180926220739.620-1-lukma@denx.de> References: <20180926220739.620-1-lukma@denx.de> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This commit adds LUT sequence to perform DUAL read (as opposite to the default QUAD for this controller). Signed-off-by: Lukasz Majewski --- drivers/mtd/spi-nor/fsl-quadspi.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 4f0c78ba6fcb..0c381cdfb39f 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -207,6 +207,7 @@ #define SEQID_RDCR 9 #define SEQID_EN4B 10 #define SEQID_BRWR 11 +#define SEQID_DUAL_READ 12 #define QUADSPI_MIN_IOMAP SZ_4M @@ -482,6 +483,15 @@ static void fsl_qspi_init_lut(struct fsl_qspi *q) qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_BRWR), base + QUADSPI_LUT(lut_base)); + /* Dual Read */ + lut_base = SEQID_DUAL_READ * 4; + + qspi_writel(q, LUT0(CMD, PAD1, SPINOR_OP_READ_1_1_2) | + LUT1(ADDR, PAD1, addrlen), base + QUADSPI_LUT(lut_base)); + qspi_writel(q, LUT0(DUMMY, PAD1, read_dm) | + LUT1(FSL_READ, PAD2, rxfifo), + base + QUADSPI_LUT(lut_base + 1)); + fsl_qspi_lock_lut(q); } @@ -513,6 +523,8 @@ static int fsl_qspi_get_seqid(struct fsl_qspi *q, u8 cmd) return SEQID_EN4B; case SPINOR_OP_BRWR: return SEQID_BRWR; + case SPINOR_OP_READ_1_1_2: + return SEQID_DUAL_READ; default: if (cmd == q->nor[0].erase_opcode) return SEQID_SE;