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GET /api/patches/816396/?format=api
{ "id": 816396, "url": "http://patchwork.ozlabs.org/api/patches/816396/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/1505932139-2905-4-git-send-email-matthew.gerlach@linux.intel.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1505932139-2905-4-git-send-email-matthew.gerlach@linux.intel.com>", "list_archive_url": null, "date": "2017-09-20T18:28:59", "name": "[v2,3/3] mtd: spi-nor: add flag for reading dummy cycles from nv cfg reg", "commit_ref": null, "pull_url": null, "state": "rejected", "archived": false, "hash": "e6d0bf511163d4e85cafd31514dc08bec6ba97c8", "submitter": { "id": 70992, "url": "http://patchwork.ozlabs.org/api/people/70992/?format=api", "name": "Matthew Gerlach", "email": "matthew.gerlach@linux.intel.com" }, "delegate": { "id": 63396, "url": "http://patchwork.ozlabs.org/api/users/63396/?format=api", "username": "cpitchen", "first_name": "Cyrille", "last_name": "Pitchen", "email": "cyrille.pitchen@atmel.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-mtd/patch/1505932139-2905-4-git-send-email-matthew.gerlach@linux.intel.com/mbox/", "series": [ { "id": 4190, "url": "http://patchwork.ozlabs.org/api/series/4190/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=4190", "date": "2017-09-20T18:28:57", "name": "Altera ASMI Parallel II IP Core", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/4190/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/816396/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/816396/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org; 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Wed, 20 Sep 2017 18:30:00 +0000", "from orsmga002.jf.intel.com ([10.7.209.21])\n\tby orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t20 Sep 2017 11:29:08 -0700", "from mgerlach-mobl.amr.corp.intel.com (HELO\n\tmgerlach-VirtualBox.amr.corp.intel.com) ([10.254.74.152])\n\tby orsmga002.jf.intel.com with ESMTP; 20 Sep 2017 11:29:07 -0700" ], "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:\n\tList-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:\n\tIn-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:\n\tContent-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc\n\t:Resent-Message-ID:List-Owner;\n\tbh=aXwjx6MQPAvwib/PZQmt69RsUrdlW7RQofZ3TCjsMqc=;\n\tb=LuvRP5lJMRdz4tQ0z6lgUbWLr5\n\tkRWzxAgc3iOv+wQemiUHzRpdgYrbvzPlFHtX23Y4vnuPzaUJHqdU2DJd1qO9VU9ku3t29vL9Nvb+Y\n\t/rCtsJtKwBII22jIK5Nb35Snk6I83xeWqBxpzfV2chKm3UJuQUi1WDrZFOnRH/xfOMxRr3N0+0g88\n\t5y3vggJjWonXcra8NUMmDfCoeyRARcsuxdFeBGfRsp41RsRN+Rl7S2b0CZ8w6qo5eOo7J4DnvUhaO\n\tM/JFF6KIZFjUP156sM64azTa0utigPncahOECK71jF7t4kXvAkqtpTH4exbU8JxS4jlaf+KuqiFIf\n\tMwkxU6UA==;", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.42,422,1500966000\"; d=\"scan'208\";a=\"137603185\"", "From": "matthew.gerlach@linux.intel.com", "To": "vndao@altera.com, dwmw2@infradead.org, computersforpeace@gmail.com,\n\tboris.brezillon@free-electrons.com, marek.vasut@gmail.com,\n\trichard@nod.at, \n\tcyrille.pitchen@wedev4u.fr, robh+dt@kernel.org, mark.rutland@arm.com, \n\tlinux-mtd@lists.infradead.org, devicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,\n\tdavem@davemloft.net, mchehab@kernel.org, linux-fpga@vger.kernel.org, \n\ttien.hock.loh@intel.com, hean.loong.ong@intel.com", "Subject": "[PATCH v2 3/3] mtd: spi-nor: add flag for reading dummy cycles from\n\tnv cfg reg", "Date": "Wed, 20 Sep 2017 11:28:59 -0700", "Message-Id": "<1505932139-2905-4-git-send-email-matthew.gerlach@linux.intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1505932139-2905-1-git-send-email-matthew.gerlach@linux.intel.com>", "References": "<1505932139-2905-1-git-send-email-matthew.gerlach@linux.intel.com>", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170920_112952_633196_4344F4ED ", "X-CRM114-Status": "GOOD ( 15.41 )", "X-Spam-Score": "-6.9 (------)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-6.9 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/,\n\thigh trust [134.134.136.24 listed in list.dnswl.org]\n\t-0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3)\n\t[134.134.136.24 listed in wl.mailspike.net]\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]\n\t-0.0 RCVD_IN_MSPIKE_WL Mailspike good senders", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Cc": "Matthew Gerlach <matthew.gerlach@linux.intel.com>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "From: Matthew Gerlach <matthew.gerlach@linux.intel.com>\n\nThis patch is a work around for some non-standard behavior\nof EPCQ flash parts:\n\nhttps://www.altera.com/documentation/wtw1396921531042.html#wtw1396921651224\n\nThese flash parts are generally used to configure Intel/Altera FPGAs\non power up. These parts report a JEDEC id of the Micron part at the core,\nbut have a different number of dummy cycles than specified in the Micron\ndata sheet. The number of required dummy cycles can be read from the\nNon-Volatile Configuration register.\n\nSigned-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>\n---\n drivers/mtd/spi-nor/altera-asmip2.c | 31 ++++++++++++++++++++++++++-----\n include/linux/mtd/altera-asmip2.h | 3 +++\n 2 files changed, 29 insertions(+), 5 deletions(-)", "diff": "diff --git a/drivers/mtd/spi-nor/altera-asmip2.c b/drivers/mtd/spi-nor/altera-asmip2.c\nindex a977765..d9cd807 100644\n--- a/drivers/mtd/spi-nor/altera-asmip2.c\n+++ b/drivers/mtd/spi-nor/altera-asmip2.c\n@@ -40,6 +40,10 @@\n #define QSPI_POLL_TIMEOUT_US\t\t10000000\n #define QSPI_POLL_INTERVAL_US\t\t5\n \n+#define SPINOR_OP_RD_NVCFG\t\t0xb5\n+#define NVCFG_DUMMY_SFT\t\t\t12\n+#define NVCFG_DUMMY_MASK\t\t0xf\n+\n struct altera_asmip2 {\n \tvoid __iomem *csr_base;\n \tu32 num_flashes;\n@@ -231,7 +235,8 @@ static void altera_asmip2_unprep(struct spi_nor *nor, enum spi_nor_ops ops)\n }\n \n static int altera_asmip2_setup_banks(struct device *dev,\n-\t\t\t\t u32 bank, struct device_node *np)\n+\t\t\t\t u32 bank, struct device_node *np,\n+\t\t\t\t u32 flags)\n {\n \tconst struct spi_nor_hwcaps hwcaps = {\n \t\t.mask = SNOR_HWCAPS_READ |\n@@ -241,6 +246,7 @@ static int altera_asmip2_setup_banks(struct device *dev,\n \tstruct altera_asmip2 *q = dev_get_drvdata(dev);\n \tstruct altera_asmip2_flash *flash;\n \tstruct spi_nor *nor;\n+\tu16 nvcfg;\n \tint ret = 0;\n \n \tif (bank > q->num_flashes - 1)\n@@ -273,6 +279,20 @@ static int altera_asmip2_setup_banks(struct device *dev,\n \t\treturn ret;\n \t}\n \n+\tif (flags & ALTERA_ASMIP2_FLASH_FLG_RD_NVCFG) {\n+\t\tret = altera_asmip2_read_reg(nor, SPINOR_OP_RD_NVCFG,\n+\t\t \t\t\t (u8*)&nvcfg, sizeof(nvcfg));\n+\n+\t\tif (ret) {\n+\t\t\tdev_err(nor->dev,\n+\t\t\t\t\"failed to read NV Configuration register\\n\");\n+\t\t\treturn ret;\n+\t\t}\n+\n+\t\tnor->read_dummy = (nvcfg >> NVCFG_DUMMY_SFT) & NVCFG_DUMMY_MASK;\n+\t\tdev_info(nor->dev, \"%s dummy %d\\n\", __func__, nor->read_dummy);\n+\t}\n+\n \tret = mtd_device_register(&nor->mtd, NULL, 0);\n \n \treturn ret;\n@@ -308,7 +328,7 @@ static int altera_asmip2_create(struct device *dev, void __iomem *csr_base)\n }\n \n static int altera_asmip2_add_bank(struct device *dev,\n-\t\t\t u32 bank, struct device_node *np)\n+\t\t\t u32 bank, struct device_node *np, u32 flags)\n {\n \tstruct altera_asmip2 *q = dev_get_drvdata(dev);\n \n@@ -317,7 +337,7 @@ static int altera_asmip2_add_bank(struct device *dev,\n \n \tq->num_flashes++;\n \n-\treturn altera_asmip2_setup_banks(dev, bank, np);\n+\treturn altera_asmip2_setup_banks(dev, bank, np, flags);\n }\n \n static int altera_asmip2_remove_banks(struct device *dev)\n@@ -361,7 +381,8 @@ static int altera_asmip2_probe_with_pdata(struct platform_device *pdev,\n \t}\n \n \tfor (i = 0; i < qdata->num_chip_sel; i++) {\n-\t\tret = altera_asmip2_add_bank(dev, i, NULL);\n+\t\tret = altera_asmip2_add_bank(dev, i, NULL,\n+\t\t\t\t\t qdata->flash_flags[i]);\n \t\tif (ret) {\n \t\t\tdev_err(dev, \"failed to add qspi bank %d\\n\", ret);\n \t\t\tbreak;\n@@ -414,7 +435,7 @@ static int altera_asmip2_probe(struct platform_device *pdev)\n \t\t\tgoto error;\n \t\t}\n \n-\t\tif (altera_asmip2_add_bank(dev, bank, pp)) {\n+\t\tif (altera_asmip2_add_bank(dev, bank, pp, 0)) {\n \t\t\tdev_err(dev, \"failed to add bank %u\\n\", bank);\n \t\t\tgoto error;\n \t\t}\ndiff --git a/include/linux/mtd/altera-asmip2.h b/include/linux/mtd/altera-asmip2.h\nindex 580c43c..185a9b2 100644\n--- a/include/linux/mtd/altera-asmip2.h\n+++ b/include/linux/mtd/altera-asmip2.h\n@@ -16,9 +16,12 @@\n #define ALTERA_ASMIP2_MAX_NUM_FLASH_CHIP 3\n #define ALTERA_ASMIP2_RESOURCE_SIZE 0x10\n \n+#define ALTERA_ASMIP2_FLASH_FLG_RD_NVCFG\tBIT(0)\n+\n struct altera_asmip2_plat_data {\n \tvoid __iomem *csr_base;\n \tu32 num_chip_sel;\n+\tu32 flash_flags[ALTERA_ASMIP2_MAX_NUM_FLASH_CHIP];\n };\n \n #endif\n", "prefixes": [ "v2", "3/3" ] }