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=-13.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 82FBDC4363D for ; Mon, 5 Oct 2020 15:33:16 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 30F772074F for ; Mon, 5 Oct 2020 15:33:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aBJ8wbKo"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="NAmLbfWo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 30F772074F Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=v0Vm6wScrjVeS6SEmxYGMfgVIoZXk1tRauSDDJasC0s=; b=aBJ8wbKoJqtpGvygozAksafhf OPMT0OtWaUwDXHKLdWMSaealPHJ7EIWmmT8uDC6ltVRfGeHXzX4YNzKuerMOUc4lzJB7SWePYzm0K bzKsCGrtEbweobSFc06Nzgm82jrrnsdjHpYWN876MG1Qu9hp1TLagxqxB6u43+3WcmpUXUHhOUZaH T2eUsGYeoB3uuWLt4M3nmp3OWEVaOtxARjUQHjWb8wygBFfQvC54WWmV//KQQCCtMMuA4A5XWPheK Kd1EL4CFAondqhfXtJQ6T5CulSpyFi/dKMuoVLq27lBb6RMHYqtqpP8Muf1lx4okvC85OefiA7lou gHbHhQMLw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kPSTi-0005OP-H2; Mon, 05 Oct 2020 15:32:42 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kPSTL-0005AC-RX for linux-mtd@lists.infradead.org; Mon, 05 Oct 2020 15:32:20 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 095FWGQG088842; Mon, 5 Oct 2020 10:32:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1601911936; bh=uZInZtZtJm4MRCGYsl8mXs5KzCzMAni/d5k6ekbUqYU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=NAmLbfWowLw3K+74mQn0Sw7Kh/OXjSmkrjHmFALEPArSKf/crKE3Ea0IV7lThqiwK lPfW5rUEQM0gx5ODY83ySRnOaDXpmPoNGlVGDBsO3ZN1Rq5Ym9So6rZmdAAuPwbUZt FbkeVzVGv4cOjhqlliKvrHYWwTLpbl3vXyEOZB48= Received: from DLEE109.ent.ti.com (dlee109.ent.ti.com [157.170.170.41]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 095FWGBK010018 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 5 Oct 2020 10:32:16 -0500 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Mon, 5 Oct 2020 10:32:16 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE108.ent.ti.com (157.170.170.38) 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, 5 Oct 2020 10:32:16 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 095FVdlr052390; Mon, 5 Oct 2020 10:32:13 -0500 From: Pratyush Yadav To: Tudor Ambarus , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , , Subject: [PATCH v16 11/15] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT Date: Mon, 5 Oct 2020 21:01:34 +0530 Message-ID: <20201005153138.6437-12-p.yadav@ti.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201005153138.6437-1-p.yadav@ti.com> References: <20201005153138.6437-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201005_113220_001372_11BBD479 X-CRM114-Status: GOOD ( 14.50 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Boris Brezillon , Sekhar Nori , Pratyush Yadav Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org A Soft Reset sequence will return the flash to Power-on-Reset (POR) state. It consists of two commands: Soft Reset Enable and Soft Reset. Find out if the sequence is supported from BFPT DWORD 16. Signed-off-by: Pratyush Yadav Reviewed-by: Tudor Ambarus --- drivers/mtd/spi-nor/core.h | 1 + drivers/mtd/spi-nor/sfdp.c | 4 ++++ drivers/mtd/spi-nor/sfdp.h | 2 ++ 3 files changed, 7 insertions(+) diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 105a4ddeb309..0a775a7b5606 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -27,6 +27,7 @@ enum spi_nor_option_flags { SNOR_F_HAS_4BIT_BP = BIT(12), SNOR_F_HAS_SR_BP3_BIT6 = BIT(13), SNOR_F_IO_MODE_EN_VOLATILE = BIT(14), + SNOR_F_SOFT_RESET = BIT(15), }; struct spi_nor_read_command { diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c index 3efcba5e629a..22cb519efe3f 100644 --- a/drivers/mtd/spi-nor/sfdp.c +++ b/drivers/mtd/spi-nor/sfdp.c @@ -608,6 +608,10 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor, break; } + /* Soft Reset support. */ + if (bfpt.dwords[BFPT_DWORD(16)] & BFPT_DWORD16_SWRST_EN_RST) + nor->flags |= SNOR_F_SOFT_RESET; + /* Stop here if not JESD216 rev C or later. */ if (bfpt_header->length == BFPT_DWORD_MAX_JESD216B) return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt, diff --git a/drivers/mtd/spi-nor/sfdp.h b/drivers/mtd/spi-nor/sfdp.h index 6d7243067252..89152ae1cf3e 100644 --- a/drivers/mtd/spi-nor/sfdp.h +++ b/drivers/mtd/spi-nor/sfdp.h @@ -90,6 +90,8 @@ struct sfdp_bfpt { #define BFPT_DWORD15_QER_SR2_BIT1_NO_RD (0x4UL << 20) #define BFPT_DWORD15_QER_SR2_BIT1 (0x5UL << 20) /* Spansion */ +#define BFPT_DWORD16_SWRST_EN_RST BIT(12) + #define BFPT_DWORD18_CMD_EXT_MASK GENMASK(30, 29) #define BFPT_DWORD18_CMD_EXT_REP (0x0UL << 29) /* Repeat */ #define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */ -- 2.28.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/