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=HEADER_FROM_DIFFERENT_DOMAINS, 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 39D1FC04EBD for ; Tue, 16 Oct 2018 12:04:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F14DB20869 for ; Tue, 16 Oct 2018 12:04:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F14DB20869 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727272AbeJPTym (ORCPT ); Tue, 16 Oct 2018 15:54:42 -0400 Received: from mail.bootlin.com ([62.4.15.54]:44404 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727084AbeJPTym (ORCPT ); Tue, 16 Oct 2018 15:54:42 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 4B3832079D; Tue, 16 Oct 2018 14:04:30 +0200 (CEST) Received: from bbrezillon (AAubervilliers-681-1-7-245.w90-88.abo.wanadoo.fr [90.88.129.245]) by mail.bootlin.com (Postfix) with ESMTPSA id AF60E20DCD; Tue, 16 Oct 2018 14:04:10 +0200 (CEST) Date: Tue, 16 Oct 2018 14:04:11 +0200 From: Boris Brezillon To: Yogesh Narayan Gaur Cc: Tudor Ambarus , "marek.vasut@gmail.com" , "dwmw2@infradead.org" , "computersforpeace@gmail.com" , "richard@nod.at" , "linux-kernel@vger.kernel.org" , "nicolas.ferre@microchip.com" , "cyrille.pitchen@microchip.com" , "linux-mtd@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "Cristian.Birsan@microchip.com" Subject: Re: [PATCH v3 1/2] mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories Message-ID: <20181016140411.3f06e449@bbrezillon> In-Reply-To: References: <20180911154007.17195-1-tudor.ambarus@microchip.com> <20180911154007.17195-2-tudor.ambarus@microchip.com> X-Mailer: Claws Mail 3.15.0-dirty (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 16 Oct 2018 09:51:47 +0000 Yogesh Narayan Gaur wrote: > Hi Tudor, > > This patch is breaking the 1-4-4 Read protocol for the spansion flash "s25fl512s". > > Without this patch read request command for Quad mode, 4-byte enable, is coming as 0xEC i.e. SPINOR_OP_READ_1_4_4_4B. > But after applying this patch, read request command for Quad mode is coming as 0x6C i.e. SPINOR_OP_READ_1_1_4_4B. > > This flash also supports non-uniform erase. > Can you please check and provide some suggestion? Are you sure the regression comes from this patch? I suspect your bug comes from 41fe242979e4 ("mtd: spi-nor: fsl-quadspi: fix read error for flash size larger than 16MB").