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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 2E66CC433E1 for ; Fri, 22 May 2020 06:31:48 +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 04BAF2087E for ; Fri, 22 May 2020 06:31:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PjZKmGOl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 04BAF2087E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw 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:Date:From:Message-ID:MIME-Version: Subject:To:References:In-Reply-To:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1qeqG3TdSkgJkzoJJMiIk/TzRcFKpP+52P8TzjQzb00=; b=PjZKmGOlw0wsab gMehAnPmX+Jmg193Lqs28AumQgXR8yvw36dKGeg8im7EMFwNwFQgCLeZWLN/p/Nxa8l55SmZt/c1y tjbzT7TCd79e28G8I9cRc5eqDLU509D9o1qRXexzGirY0VHeKP5tLmbMAWqBJaau7gMVfvhaxKgPP 2Aa70gAO0fl0FfEve+fHWKb3KoIYmChSpseJig/MS3toE3R5FmCk9ZJR8yFpJZiwbTExxUvdmhawU OsEjpoF4TCCsO33AVxLw834otaRgPcqU0gze/dsk9NPlc5cg0s+SRBy9b7CFx+ZhMbEZM9LFevEXS PsoL2qQ6DJZTkMqOBycw==; 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 1jc1DS-0006uD-27; Fri, 22 May 2020 06:31:34 +0000 Received: from twhmllg4.macronix.com ([211.75.127.132]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jc1DP-0006t8-C9; Fri, 22 May 2020 06:31:32 +0000 Received: from twhfm1p2.macronix.com (twhfmlp2.macronix.com [172.17.20.92]) by TWHMLLG4.macronix.com with ESMTP id 04M6Uv0L024143; Fri, 22 May 2020 14:30:57 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) Received: from MXML06C.mxic.com.tw (mxml06c.mxic.com.tw [172.17.14.55]) by Forcepoint Email with ESMTP id 392FE906D490C16CE7F1; Fri, 22 May 2020 14:30:58 +0800 (CST) In-Reply-To: <20200519142642.24131-6-p.yadav@ti.com> References: <20200519142642.24131-1-p.yadav@ti.com> <20200519142642.24131-6-p.yadav@ti.com> To: "Pratyush Yadav" Subject: Re: [PATCH v5 05/19] mtd: spi-nor: add support for DTR protocol MIME-Version: 1.0 X-KeepSent: AC48157A:F337A12A-48258570:0021F23B; type=4; name=$KeepSent X-Mailer: Lotus Notes Release 8.5.3FP4 SHF90 June 10, 2013 Message-ID: From: masonccyang@mxic.com.tw Date: Fri, 22 May 2020 14:30:58 +0800 X-MIMETrack: Serialize by Router on MXML06C/TAIWAN/MXIC(Release 9.0.1FP10 HF265|July 25, 2018) at 2020/05/22 PM 02:30:58, Serialize complete at 2020/05/22 PM 02:30:58 X-MAIL: TWHMLLG4.macronix.com 04M6Uv0L024143 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200521_233131_676622_28B0BCEF X-CRM114-Status: UNSURE ( 8.77 ) X-CRM114-Notice: Please train this message. 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: Alexandre Belloni , Vignesh Raghavendra , Tudor Ambarus , juliensu@mxic.com.tw, Richard Weinberger , Mark Brown , Nicolas Ferre , Sekhar Nori , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, Ludovic Desroches , Boris Brezillon , linux-mediatek@lists.infradead.org, Miquel Raynal , Matthias Brugger , linux-mtd@lists.infradead.org, Pratyush Yadav , linux-arm-kernel@lists.infradead.org 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 Hi Pratyush, > +/** > + * spi_nor_spimem_setup_op() - Set up common properties of a spi-mem op. > + * @nor: pointer to a 'struct spi_nor' > + * @op: pointer to the 'struct spi_mem_op' whose properties > + * need to be initialized. > + * @proto: the protocol from which the properties need to be set. > + */ > +void spi_nor_spimem_setup_op(const struct spi_nor *nor, > + struct spi_mem_op *op, > + const enum spi_nor_protocol proto) > +{ > + u8 ext; > + > + op->cmd.buswidth = spi_nor_get_protocol_inst_nbits(proto); > + > + if (op->addr.nbytes) > + op->addr.buswidth = spi_nor_get_protocol_addr_nbits(proto); > + > + if (op->dummy.nbytes) > + op->dummy.buswidth = spi_nor_get_protocol_addr_nbits(proto); > + > + if (op->data.nbytes) > + op->data.buswidth = spi_nor_get_protocol_data_nbits(proto); > + > + if (spi_nor_protocol_is_dtr(proto)) { As mentioned before that I am also patching mx25* which supports 8S-8S-8S and 8D-8D-8D mode. please patch to spi_nor_protocol_is_8_8_8(proto) for 8S-8S-8S mode support. > + /* > + * spi-mem supports mixed DTR modes, but right now we can only > + * have all phases either DTR or STR. IOW, spi-mem can have > + * something like 4S-4D-4D, but spi-nor can't. So, set all 4 > + * phases to either DTR or STR. > + */ if (spi_nor_protocol_is_8D_8D_8D(proto) { > + op->cmd.dtr = op->addr.dtr = op->dummy.dtr > + = op->data.dtr = true; > + > + /* 2 bytes per clock cycle in DTR mode. */ > + op->dummy.nbytes *= 2; } > + > + ext = spi_nor_get_cmd_ext(nor, op); > + op->cmd.opcode = (op->cmd.opcode << 8) | ext; > + op->cmd.nbytes = 2; > + } > +} > + thanks & best regards, Mason CONFIDENTIALITY NOTE: This e-mail and any attachments may contain confidential information and/or personal data, which is protected by applicable laws. Please be reminded that duplication, disclosure, distribution, or use of this e-mail (and/or its attachments) or any part thereof is prohibited. If you receive this e-mail in error, please notify us immediately and delete this mail as well as its attachment(s) from your system. 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