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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 34714C433E8 for ; Thu, 23 Jul 2020 13:12:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0F55020737 for ; Thu, 23 Jul 2020 13:12:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729154AbgGWNMy (ORCPT ); Thu, 23 Jul 2020 09:12:54 -0400 Received: from relay5-d.mail.gandi.net ([217.70.183.197]:54299 "EHLO relay5-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726521AbgGWNMv (ORCPT ); Thu, 23 Jul 2020 09:12:51 -0400 X-Originating-IP: 42.109.196.68 Received: from localhost.localdomain (unknown [42.109.196.68]) (Authenticated sender: me@yadavpratyush.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id EAA331C000C; Thu, 23 Jul 2020 13:12:46 +0000 (UTC) From: Pratyush Yadav To: Tudor Ambarus , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Sekhar Nori , Boris Brezillon , Pratyush Yadav , Pratyush Yadav Subject: [PATCH v11 06/14] mtd: spi-nor: core: use dummy cycle and address width info from SFDP Date: Thu, 23 Jul 2020 18:41:55 +0530 Message-Id: <20200723131203.40916-7-me@yadavpratyush.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200723131203.40916-1-me@yadavpratyush.com> References: <20200723131203.40916-1-me@yadavpratyush.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pratyush Yadav The xSPI Profile 1.0 table specifies how many dummy cycles and address bytes are needed for the Read Status Register command in octal DTR mode. Use that information to send the correct Read SR command. Signed-off-by: Pratyush Yadav --- drivers/mtd/spi-nor/core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 6dfc54ff83be..185ca1fa2b50 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -379,6 +379,11 @@ static int spi_nor_read_sr(struct spi_nor *nor, u8 *sr) SPI_MEM_OP_NO_DUMMY, SPI_MEM_OP_DATA_IN(1, sr, 1)); + if (spi_nor_protocol_is_dtr(nor->reg_proto)) { + op.addr.nbytes = nor->params->rdsr_addr_nbytes; + op.dummy.nbytes = nor->params->rdsr_dummy; + } + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); ret = spi_mem_exec_op(nor->spimem, &op); @@ -410,6 +415,11 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr) SPI_MEM_OP_NO_DUMMY, SPI_MEM_OP_DATA_IN(1, fsr, 1)); + if (spi_nor_protocol_is_dtr(nor->reg_proto)) { + op.addr.nbytes = nor->params->rdsr_addr_nbytes; + op.dummy.nbytes = nor->params->rdsr_dummy; + } + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); ret = spi_mem_exec_op(nor->spimem, &op); -- 2.27.0