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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 D3CF1C43381 for ; Thu, 21 Feb 2019 10:50:14 +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 A50232147A for ; Thu, 21 Feb 2019 10:50:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="mFR0AAUK"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="GXmuhlOf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A50232147A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=snR7ckmf8MY1e89mFR1PmQbXWgTVpFJSpmeGcX9lHQk=; b=mFR0AAUK4YDovd 39ouPbbq6GhdTykj8qS6QC3h7BBGZkXn3j9tCEnaMxPykw0rY8BrywnvXR6XNt3o5RhGmEZNAerme IAdrtr1AjDOti8sgBYrlqSbkaxrZDAqyMVRgyIU3HvXyakVRreyiCpAR8KxFuMaeKtncqmuf3FFLQ /NwZ7K8RFCyetPnOUW9///yYltiuOvTmJ+XsF2RKYzUpehJOUcMVoldXLfEQ16dc4leorx0jFpvUS ROnsONdJupQXXAT9dqe6V4MtJxaihU+DmnVSG/U/CYA8gvVrYkXRaEp3QZHBPIUqNy74R1X2Wi+ao VviJdZC4s/9D0JTuweMw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gwlvg-0002rV-Kp; Thu, 21 Feb 2019 10:50:12 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gwlvc-0002fo-53 for linux-mtd@lists.infradead.org; Thu, 21 Feb 2019 10:50:10 +0000 Received: from localhost (unknown [91.160.177.164]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AD5912085A; Thu, 21 Feb 2019 10:50:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550746207; bh=UzPbx+4zhvLIEMpbClq8uHK5gFKnQ2FWG/PtwIKyJMY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=GXmuhlOfBS8Ft76flrx9W04KSE3BXpSvA+yA6+cnK9N4GYQNvTFxSU3IV8zk6eST5 viDbmnjauXdDaJ5pguJmaL6E/VSqLLuEzW+yR1+MzRjGIy28Q61Ql0mwwdL4LYxkC3 FfpfH/h4Qz6aw8Zn8okfk96SFzHDxWip7SRLpO0Y= Date: Thu, 21 Feb 2019 11:50:01 +0100 From: Boris Brezillon To: "Bean Huo (beanhuo)" Subject: Re: [EXT] [PATCH v6 2/2] mtd: spi-nor: cadence-quadspi: Add support for Octal SPI controller Message-ID: <20190221115001.09008681@kernel.org> In-Reply-To: References: <20190212083809.6534-1-vigneshr@ti.com> <20190212083809.6534-3-vigneshr@ti.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190221_025008_226504_1482D6FB X-CRM114-Status: GOOD ( 10.15 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "devicetree@vger.kernel.org" , Vignesh R , "Tudor.Ambarus@microchip.com" , "linux-kernel@vger.kernel.org" , Marek Vasut , Rob Herring , "linux-mtd@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 On Thu, 21 Feb 2019 10:41:33 +0000 "Bean Huo (beanhuo)" wrote: > Hi, Vignesh > > > > >Cadence OSPI controller IP supports Octal IO (x8 IO lines), It also has an > >integrated PHY. IP register layout is very similar to existing QSPI IP except for > >additional bits to support Octal and Octal DDR mode. Therefore, extend > >current driver to support Octal mode. Only Octal SDR read (1-1-8)mode is > >supported for now. > > Does this your Cadence OSPI controller support 8-8-8 IO mode, if yes, > Why not directly enable 8-8-8 mode? > Mode 8-8-8 is anyway not supported by the core (see [1] if you need more details). [1]https://patchwork.kernel.org/cover/10638055/ ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/