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GET /api/patches/815442/?format=api
{ "id": 815442, "url": "http://patchwork.ozlabs.org/api/patches/815442/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170919105605.18533-5-vigneshr@ti.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": "<20170919105605.18533-5-vigneshr@ti.com>", "list_archive_url": null, "date": "2017-09-19T10:56:04", "name": "[RESEND,v2,4/5] mtd: spi-nor: cadence-quadspi: Add support to enable loop-back clock circuit", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "7a9f7745b9269317f9c45363cc73f5d834b46a9a", "submitter": { "id": 65039, "url": "http://patchwork.ozlabs.org/api/people/65039/?format=api", "name": "Raghavendra, Vignesh", "email": "vigneshr@ti.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/20170919105605.18533-5-vigneshr@ti.com/mbox/", "series": [ { "id": 3841, "url": "http://patchwork.ozlabs.org/api/series/3841/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=3841", "date": "2017-09-19T10:56:01", "name": "K2G: Add QSPI support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/3841/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/815442/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/815442/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; spf=none (mailfrom)\n\tsmtp.mailfrom=lists.infradead.org (client-ip=65.50.211.133;\n\thelo=bombadil.infradead.org;\n\tenvelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=lists.infradead.org\n\theader.i=@lists.infradead.org header.b=\"lkbAtNiC\"; \n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ti.com header.i=@ti.com header.b=\"T+Xok2uX\";\n\tdkim-atps=neutral" ], "Received": [ "from bombadil.infradead.org (bombadil.infradead.org\n\t[65.50.211.133])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xxKfk17N3z9s7m\n\tfor <incoming@patchwork.ozlabs.org>;\n\tTue, 19 Sep 2017 21:00:46 +1000 (AEST)", "from localhost ([127.0.0.1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1duGGc-0005xO-U3; Tue, 19 Sep 2017 11:00:38 +0000", "from lelnx194.ext.ti.com ([198.47.27.80])\n\tby bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux))\n\tid 1duGDE-0002pG-UT; Tue, 19 Sep 2017 10:57:24 +0000", "from dflxv15.itg.ti.com ([128.247.5.124])\n\tby lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id v8JAuOQq017826; \n\tTue, 19 Sep 2017 05:56:24 -0500", "from DFLE108.ent.ti.com (dfle108.ent.ti.com [10.64.6.29])\n\tby dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id v8JAuOi0008963;\n\tTue, 19 Sep 2017 05:56:24 -0500", "from DFLE113.ent.ti.com (10.64.6.34) by DFLE108.ent.ti.com\n\t(10.64.6.29) with Microsoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34;\n\tTue, 19 Sep 2017 05:56:24 -0500", "from dlep32.itg.ti.com (157.170.170.100) by DFLE113.ent.ti.com\n\t(10.64.6.34) with Microsoft SMTP Server (version=TLS1_0,\n\tcipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.845.34 via Frontend\n\tTransport; Tue, 19 Sep 2017 05:56:24 -0500", "from a0132425.india.ti.com (ileax41-snat.itg.ti.com\n\t[10.172.224.153])\n\tby dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id v8JAu6Rg022115;\n\tTue, 19 Sep 2017 05:56:21 -0500" ], "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:Cc:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:\n\tMessage-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=1rdrZcGg+TzIixlaQMCod0T6iKcsUEP0ZtEH2KBm0uw=;\n\tb=lkbAtNiCu8OgcS\n\tWGRsvdl8pj/hvriBw+zIYD+C17NIIEmxsh5qsnq751OOULW79QnhFD2qjzogtqUyL2bzOmI+laWHk\n\t8ytN4bPwvQqBBERTX+VUiohjy4CjWdJMOPyD4yd/U8sLu5JLUhd7UucXa5oBYdfAie/m+ChaqkbAw\n\tsBLi6XESo+yxjtk2bhQGAyvEQW87BMzVGh29iy6aADl2WsIdRsGUvnsXqNJNboiNJSyeokvfFa7nv\n\tzyYuVd0iPXfhTt2wl5ZAdV6VaGCPObiWPtHmsYRFvXgJ5YMUpu5IrgUuzjSEkEfjKWXyAlo36pfXf\n\trqmo+gmdtkJSwL5TbQig==;", "v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com;\n\ts=ti-com-17Q1; t=1505818584;\n\tbh=O1auFgZtjNqvh/jXfV5nkcxhvRG4KCjr4ElPum9VnZI=;\n\th=From:To:CC:Subject:Date:In-Reply-To:References;\n\tb=T+Xok2uXeo52LzAjj+B+swgWqmONd+DAELQeoHHk/zI77SjDjcrz7Ahsez2Xt7APH\n\t16EG2J+xMCgkiOMjyog5TdXFbiFtjUaYTODxR70bnJ/36X57V5LrrV5D3vRpn9ZSPp\n\tvR+wLVmMLn0OnzisV4qXNRBIex2rJFYszlfefaKs=" ], "From": "Vignesh R <vigneshr@ti.com>", "To": "Marek Vasut <marek.vasut@gmail.com>, Cyrille Pitchen\n\t<cyrille.pitchen@wedev4u.fr>", "Subject": "[RESEND PATCH v2 4/5] mtd: spi-nor: cadence-quadspi: Add support to\n\tenable loop-back clock circuit", "Date": "Tue, 19 Sep 2017 16:26:04 +0530", "Message-ID": "<20170919105605.18533-5-vigneshr@ti.com>", "X-Mailer": "git-send-email 2.14.1", "In-Reply-To": "<20170919105605.18533-1-vigneshr@ti.com>", "References": "<20170919105605.18533-1-vigneshr@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-20170919_035709_161206_ED85C4E7 ", "X-CRM114-Status": "UNSURE ( 9.63 )", "X-CRM114-Notice": "Please train this message.", "X-Spam-Score": "-2.0 (--)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-2.0 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/,\n\tno trust [198.47.27.80 listed in list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\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-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n\tnot necessarily valid\n\t-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n\tauthor's domain", "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": "Boris Brezillon <boris.brezillon@free-electrons.com>,\n\tVignesh R <vigneshr@ti.com>, devicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,\n\tlinux-mtd@lists.infradead.org,\n\tBrian Norris <computersforpeace@gmail.com>, \n\tDavid Woodhouse <dwmw2@infradead.org>,\n\tlinux-arm-kernel <linux-arm-kernel@lists.infradead.org>", "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": "Cadence QSPI IP has a adapted loop-back circuit which can be enabled by\nsetting BYPASS field to 0 in READCAPTURE register. It enables use of\nQSPI return clock to latch the data rather than the internal QSPI\nreference clock. For high speed operations, adapted loop-back circuit\nusing QSPI return clock helps to increase data valid window.\n\nBased on DT parameter cdns,rclk-en enable adapted loop-back circuit\nfor boards which do have QSPI return clock provided.\nThis patch also modifies cqspi_readdata_capture() function's bypass\nparameter to bool to match how its used in the function.\n\nSigned-off-by: Vignesh R <vigneshr@ti.com>\n---\n drivers/mtd/spi-nor/cadence-quadspi.c | 8 ++++++--\n 1 file changed, 6 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c\nindex bb0cb02a6938..c11ced529ddd 100644\n--- a/drivers/mtd/spi-nor/cadence-quadspi.c\n+++ b/drivers/mtd/spi-nor/cadence-quadspi.c\n@@ -78,6 +78,7 @@ struct cqspi_st {\n \tbool\t\t\tis_decoded_cs;\n \tu32\t\t\tfifo_depth;\n \tu32\t\t\tfifo_width;\n+\tbool\t\t\trclk_en;\n \tu32\t\t\ttrigger_address;\n \tu32\t\t\twr_delay;\n \tstruct cqspi_flash_pdata f_pdata[CQSPI_MAX_CHIPSELECT];\n@@ -788,7 +789,7 @@ static void cqspi_config_baudrate_div(struct cqspi_st *cqspi)\n }\n \n static void cqspi_readdata_capture(struct cqspi_st *cqspi,\n-\t\t\t\t const unsigned int bypass,\n+\t\t\t\t const bool bypass,\n \t\t\t\t const unsigned int delay)\n {\n \tvoid __iomem *reg_base = cqspi->iobase;\n@@ -852,7 +853,8 @@ static void cqspi_configure(struct spi_nor *nor)\n \t\tcqspi->sclk = sclk;\n \t\tcqspi_config_baudrate_div(cqspi);\n \t\tcqspi_delay(nor);\n-\t\tcqspi_readdata_capture(cqspi, 1, f_pdata->read_delay);\n+\t\tcqspi_readdata_capture(cqspi, !cqspi->rclk_en,\n+\t\t\t\t f_pdata->read_delay);\n \t}\n \n \tif (switch_cs || switch_ck)\n@@ -1049,6 +1051,8 @@ static int cqspi_of_get_pdata(struct platform_device *pdev)\n \t\treturn -ENXIO;\n \t}\n \n+\tcqspi->rclk_en = of_property_read_bool(np, \"cdns,rclk-en\");\n+\n \treturn 0;\n }\n \n", "prefixes": [ "RESEND", "v2", "4/5" ] }