From patchwork Wed Apr 20 10:34:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tudor Ambarus X-Patchwork-Id: 1619458 X-Patchwork-Delegate: p.yadav@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=13pOMmKS; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.a=rsa-sha256 header.s=mchp header.b=jeKx6Qrr; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4Kjxt211Rjz9sFq for ; Wed, 20 Apr 2022 20:36:26 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=/NxXaL4utFWKmK9doSG+V/1LN7hxsGscf8JMwaQqHuk=; b=13pOMmKSTA3/De LMn1QsQjowy2J51axH2VjwVIGvrasMmXAhLEmbcyfHGIR2TQyOhrqwjZaodc6cQBYS+b9YIv7EOo5 TBTRN5wnBvO8MuwDNHctwJeQYoH5IulbsyYOlKpwnZiio451kosaC6v8lt8QPLIrFCPodw5EMe6KP urxqLaYgGNOaNVzxN2HQ5MOGvTzF27H+X9Mwcyu/JXHqUaUSfU3mwRKqS8JQR5eNQy694614e3Jpc dkkmklZR7q/jnnMyaJ6PZCWeh1VBTDjuxddORAQqN9Oh9bXNC4Iin5xUZTY4QzbpGT95eIq6kiPAU cdBodP9/bF9JWmHBKXYw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nh7gh-008cxj-Ga; Wed, 20 Apr 2022 10:35:55 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nh7fo-008cKc-84 for linux-mtd@lists.infradead.org; Wed, 20 Apr 2022 10:35:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1650450900; x=1681986900; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CgU0M9Ctm66tAtz7ZrqfIj4aDO8PJLE7JPM+0GAyffk=; b=jeKx6QrrWKZS1S17pJQB3J6I9Xved143wqexzE/cfOWDR51WbQzYBepj zlCClAzvfWuQIb1J0if2KGzAGu5p2UeyE+coFG8sqPvL31VavT/aUciw6 0q9uxQwxRkJrHALZ7jcfXsIx9bd0wg/HjGu3w/VRDQVkHBqE+2qpIg8Ai NksXN5YfeVFvT8l1s4ILnf8d+Kxy8ze1Wx+Rim9mlpyKcmPzyY2lydV5+ aHMbGfLGFJk58nCCk/JUo9ygAjjzO3AVl85mqoeQ3bk5RNR8ZgtclOtId IrhPFkcWRmzzoKhRrUIDRffYhZjDv8trlgCIVbkA6dusGiLfaigwsJ7Px A==; X-IronPort-AV: E=Sophos;i="5.90,275,1643698800"; d="scan'208";a="170245898" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 20 Apr 2022 03:34:59 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Wed, 20 Apr 2022 03:34:58 -0700 Received: from ROB-ULT-M18064N.mchp-main.com (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Wed, 20 Apr 2022 03:34:56 -0700 From: Tudor Ambarus To: , CC: , , , , , , Tudor Ambarus Subject: [PATCH v4 11/11] mtd: spi-nor: micron-st: Remove status polling on volatile registers write Date: Wed, 20 Apr 2022 13:34:27 +0300 Message-ID: <20220420103427.47867-12-tudor.ambarus@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220420103427.47867-1-tudor.ambarus@microchip.com> References: <20220420103427.47867-1-tudor.ambarus@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220420_033500_370735_D0083868 X-CRM114-Status: UNSURE ( 7.76 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.7 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Writing volatile registers are instant according to Micron and do not need any status polling. Remove status polling on volatile registers write. Signed-off-by: Tudor Ambarus --- drivers/mtd/spi-nor/micron-st.c | 3 --- 1 file changed, 3 deletions(-) Content analysis details: (-2.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [68.232.153.233 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender 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: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Writing volatile registers are instant according to Micron and do not need any status polling. Remove status polling on volatile registers write. Signed-off-by: Tudor Ambarus Reviewed-by: Michael Walle --- drivers/mtd/spi-nor/micron-st.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c index 61db4896e327..a96f74e0f568 100644 --- a/drivers/mtd/spi-nor/micron-st.c +++ b/drivers/mtd/spi-nor/micron-st.c @@ -58,9 +58,6 @@ static int micron_st_nor_octal_dtr_en(struct spi_nor *nor) op = (struct spi_mem_op) MICRON_ST_NOR_WR_ANY_REG_OP(3, SPINOR_REG_MT_CFR1V, 1, buf); ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); - if (ret) - return ret; - ret = spi_nor_wait_till_ready(nor); if (ret) return ret;