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=-12.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 ACA26C4708F for ; Wed, 2 Jun 2021 07:42:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 970656138C for ; Wed, 2 Jun 2021 07:42:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231908AbhFBHo2 (ORCPT ); Wed, 2 Jun 2021 03:44:28 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:54546 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229603AbhFBHo0 (ORCPT ); Wed, 2 Jun 2021 03:44:26 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 1527gGHk040486; Wed, 2 Jun 2021 02:42:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1622619736; bh=on221I0/fbDX/gm21Y2yHzs/Jt3SZPApRYBMpZhQw2g=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=lufhlBy4NtrGCtX5ePp062Lnf0ktHPnng6jRt3EU8AkLiTWWk6JoCQstL+kXMXnW0 z6lLXNfrZb4FVMOCxuBz/m8O8u9LLBIMbJxhbs62s5cU0YumCrXQ7C+QcGHSbxKdCc BtcmLSCV1nENUu7u6eXsjNsgW9cS+BPxwnugD7X4= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 1527gG5S014263 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 2 Jun 2021 02:42:16 -0500 Received: from DFLE106.ent.ti.com (10.64.6.27) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 2 Jun 2021 02:42:15 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE106.ent.ti.com (10.64.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Wed, 2 Jun 2021 02:42:15 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 1527gFSs037775; Wed, 2 Jun 2021 02:42:15 -0500 Date: Wed, 2 Jun 2021 13:12:14 +0530 From: Pratyush Yadav To: Michael Walle CC: Tudor Ambarus , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Mark Brown , , , Subject: Re: [PATCH v2 2/6] mtd: spi-nor: spansion: write 2 bytes when disabling Octal DTR mode Message-ID: <20210602074212.o4dmwry747wortsq@ti.com> References: <20210531181757.19458-1-p.yadav@ti.com> <20210531181757.19458-3-p.yadav@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20171215 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/06/21 02:47PM, Michael Walle wrote: > Am 2021-05-31 20:17, schrieb Pratyush Yadav: > > The Octal DTR configuration is stored in the CFR5V register. This > > register is 1 byte wide. But 1 byte long transactions are not allowed in > > 8D-8D-8D mode. Since the next byte address does not contain any > > register, it is safe to write any value to it. Write a 0 to it. > > > > Signed-off-by: Pratyush Yadav > > --- > > Can't say much, because there is no public datasheet, is there? https://www.cypress.com/file/513996/download > > But looks sane. Same for patch 3/6. -- Regards, Pratyush Yadav Texas Instruments Inc.