From patchwork Mon Jun 1 07:04:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vignesh Raghavendra X-Patchwork-Id: 214483 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 8ADA0C433E0 for ; Mon, 1 Jun 2020 07:06:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5ED2B2074B for ; Mon, 1 Jun 2020 07:06:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="LWvw8Akz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728071AbgFAHF6 (ORCPT ); Mon, 1 Jun 2020 03:05:58 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:39798 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727118AbgFAHF5 (ORCPT ); Mon, 1 Jun 2020 03:05:57 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 05175muG014787; Mon, 1 Jun 2020 02:05:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1590995148; bh=jY9DCJOAaosq5gwJu8ALTUFkZtJ1Ywe+yMWjig0XeuI=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=LWvw8AkzMeZD4hVP/yCc3jU58d4oYDZt9f/6tOwwVBqgQ+DEe+ycrne1upBinyhDe eJkN18D4GYRenJ7wmeW9o59ick5/yCedqQ5UBUqiWdmrC9XnU2psRZp4/wonQqybBY i+N+mlJObo8GiYS7eSYq+OXGTc9yX2J5L6N4QY5I= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 05175mfj052757; Mon, 1 Jun 2020 02:05:48 -0500 Received: from DLEE114.ent.ti.com (157.170.170.25) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Mon, 1 Jun 2020 02:05:48 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE114.ent.ti.com (157.170.170.25) 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; Mon, 1 Jun 2020 02:05:48 -0500 Received: from ula0132425.ent.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 051758s8016257; Mon, 1 Jun 2020 02:05:41 -0500 From: Vignesh Raghavendra To: Tudor Ambarus , Mark Brown CC: Vignesh Raghavendra , Boris Brezillon , Ramuthevar Vadivel Murugan , , , , , , Subject: [RESEND PATCH v3 6/8] mtd: spi-nor: cadence-quadspi: Drop redundant WREN in erase path Date: Mon, 1 Jun 2020 12:34:42 +0530 Message-ID: <20200601070444.16923-7-vigneshr@ti.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200601070444.16923-1-vigneshr@ti.com> References: <20200601070444.16923-1-vigneshr@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Drop redundant WREN command in cqspi_erase() as SPI NOR core takes care of sending WREN command before sending erase command. Signed-off-by: Vignesh Raghavendra Reviewed-by: Tudor Ambarus --- drivers/mtd/spi-nor/controllers/cadence-quadspi.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/mtd/spi-nor/controllers/cadence-quadspi.c b/drivers/mtd/spi-nor/controllers/cadence-quadspi.c index 0570ebca135a9..6b1cbad25e3f6 100644 --- a/drivers/mtd/spi-nor/controllers/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/controllers/cadence-quadspi.c @@ -1016,11 +1016,6 @@ static int cqspi_erase(struct spi_nor *nor, loff_t offs) if (ret) return ret; - /* Send write enable, then erase commands. */ - ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WREN, NULL, 0); - if (ret) - return ret; - /* Set up command buffer. */ ret = cqspi_command_write_addr(nor, nor->erase_opcode, offs); if (ret)