From patchwork Tue Dec 22 18:44:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 11987159 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=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 03A83C433DB for ; Tue, 22 Dec 2020 18:45:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8170229C5 for ; Tue, 22 Dec 2020 18:45:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725913AbgLVSpL (ORCPT ); Tue, 22 Dec 2020 13:45:11 -0500 Received: from fllv0015.ext.ti.com ([198.47.19.141]:54336 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725895AbgLVSpK (ORCPT ); Tue, 22 Dec 2020 13:45:10 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 0BMIiSKE015027; Tue, 22 Dec 2020 12:44:28 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1608662668; bh=nIeu68XbENAxLALuN59XaMZObxogV3FSs/9yg4UBJ/k=; h=From:To:CC:Subject:Date; b=htqxS2UlVYUnb1mv27k4xXuLYX/HMhxPztNN1xyiZbTiZ62+EEOO7dMZ5w6fZcITh qy9pVvt5xbYTwX0H8Df33KIaYO4fLhn+hs9C1MTPV44jMPQk311AzCvsXdJupnVyd8 /aofKE7+G/VAu3RO/ZVlngTZL3G0V4dCAK/kN0aw= Received: from DFLE103.ent.ti.com (dfle103.ent.ti.com [10.64.6.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 0BMIiSCq122898 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 22 Dec 2020 12:44:28 -0600 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Tue, 22 Dec 2020 12:44:28 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Tue, 22 Dec 2020 12:44:28 -0600 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 0BMIiQbY003761; Tue, 22 Dec 2020 12:44:26 -0600 From: Pratyush Yadav To: Mark Brown , Vignesh Raghavendra CC: Pratyush Yadav , , Subject: [PATCH 0/7] spi: cadence-quadspi: Add Octal DTR support Date: Wed, 23 Dec 2020 00:14:18 +0530 Message-ID: <20201222184425.7028-1-p.yadav@ti.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Hi, This series adds support for Octal DTR mode now that SPI NOR supports these flashes. Patches 1/7 to 4/7 and 6/7 fix some minor bugs and issues. Patche 5/7 lays some groundwork by implementing the supports_op() hook. Patch 7/7 adds the Octal DTR mode support. While the main aim of this series is to support 8D-8D-8D mode, other modes like 4D-4D-4D or 2S-2S-2S should also now be supported, though they have not been tested. Tested on J721E with Micron MT35XU512ABA and on J7200 with Cypress S28HS512T. Tested on J721E with Micron MT25QU512A (1S-1S-4S) for regressions. Pratyush Yadav (7): spi: cadence-quadspi: Set master max_speed_hz spi: cadence-quadspi: Abort read if dummy cycles required are too many spi: cadence-quadspi: Set dummy cycles from STIG commands spi: cadence-quadspi: Fix dummy cycle calculation when buswidth > 1 spi: cadence-quadspi: Implement a simple supports_op hook spi: cadence-quadspi: Wait at least 500 ms for direct reads spi: cadence-quadspi: Add DTR support drivers/spi/spi-cadence-quadspi.c | 364 ++++++++++++++++++++++++++---- 1 file changed, 325 insertions(+), 39 deletions(-) --- 2.28.0