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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 125F4C433EF for ; Fri, 13 May 2022 11:11:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:Cc:To:From :Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=L6iitpGkCWBkN5Kr8CVxbpfsRaVujbo9n2bnuxDOuw0=; b=kJAKAo6YP4eFHY3o0AwQU+JViy KhWIjLJM0QVPFjLlS9KIMAlgf1a0GJ70edKFQnJk4Ya5+dyfgq6zqsHiu1TN9CNCGdOnbbQ3Tt5i3 PWsUTFnqaaUVWUqZIZMaW96hCt3RYzg+6liyatDf+L0FpwoVBspx1SjVxNZY14DcEKRbbS3MHsjpr eq1Pe7znLvnyFPr0riuzzVhydcQOHjfECi0zhFFkAo2E+o928kJ+PB4K6KxJw/SS0U8FgEvoZcBVX qe2wdWD1wHTvzWHAMUO45o8rBM9+b8BJ0wdoFiH1+vOlpLj+OTEGIGJs4gn5mrbWE5W3kzVtsh/Y/ NSUsrnUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1npTCd-00FjMf-5i; Fri, 13 May 2022 11:11:23 +0000 Received: from ssl.serverraum.org ([2a01:4f8:151:8464::1:2]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1npTCZ-00FjLj-H3 for linux-mtd@lists.infradead.org; Fri, 13 May 2022 11:11:21 +0000 Received: from ssl.serverraum.org (web.serverraum.org [172.16.0.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id E8EDB221D4; Fri, 13 May 2022 13:11:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1652440275; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9pV4ceZp2jBzmUpp2ZHmANTNVPZNX+S/qtaNuz/v8JU=; b=rDLw+uO7mxnfh6PH1ONHS1YDxUz4UVpEUka9QoM0qVf0lttGaNZJ2nZqi8qa8GBqX+HS2v oihlqaATznXfoDhAwwgXq8eDqu8EHRir1NhFr/lpQM6kXGelXOEpFvY1GsMm7LmAlj/MVT ugKmU5Gl6v/74YvYSorP0qDGsUHxaX8= MIME-Version: 1.0 Date: Fri, 13 May 2022 13:11:14 +0200 From: Michael Walle To: Alexander A Sverdlin Cc: linux-mtd@lists.infradead.org, Tudor Ambarus , Pratyush Yadav , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , linux-kernel@vger.kernel.org Subject: Re: [PATCH] mtd: spi-nor: Support Dual and Quad Read on Macronix mx25u25635f In-Reply-To: <20220513094759.44185-1-alexander.sverdlin@nokia.com> References: <20220513094759.44185-1-alexander.sverdlin@nokia.com> User-Agent: Roundcube Webmail/1.4.13 Message-ID: <34eccc66cc75dd0ffbf8a77780b6f8a7@walle.cc> X-Sender: michael@walle.cc X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220513_041119_766360_C893C587 X-CRM114-Status: UNSURE ( 6.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Hi, Am 2022-05-13 11:47, schrieb Alexander A Sverdlin: > From: Alexander Sverdlin > > According to datasheet both Dual and Quad Read is supported. The read > test > shows x3.8 speed gain. Does it have SFDP? Try adding PARSE_SFDP instead of the NO_SFDP_FLAGS. Please post an SFDP dump of this flash [1]. -michael [1] https://lore.kernel.org/linux-mtd/4304e19f3399a0a6e856119d01ccabe0@walle.cc/ ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/