{"id":817892,"url":"http://patchwork.ozlabs.org/api/patches/817892/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-mtd/patch/20170924105924.23923-4-vigneshr@ti.com/","project":{"id":3,"url":"http://patchwork.ozlabs.org/api/projects/3/?format=json","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":"<20170924105924.23923-4-vigneshr@ti.com>","list_archive_url":null,"date":"2017-09-24T10:59:22","name":"[v3,3/5] mtd: spi-nor: cadence-quadspi: Add new binding to enable loop-back circuit","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"7772878ebe166d2d0d7e4ea978d29421dd51db0a","submitter":{"id":65039,"url":"http://patchwork.ozlabs.org/api/people/65039/?format=json","name":"Raghavendra, Vignesh","email":"vigneshr@ti.com"},"delegate":{"id":63396,"url":"http://patchwork.ozlabs.org/api/users/63396/?format=json","username":"cpitchen","first_name":"Cyrille","last_name":"Pitchen","email":"cyrille.pitchen@atmel.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-mtd/patch/20170924105924.23923-4-vigneshr@ti.com/mbox/","series":[{"id":4811,"url":"http://patchwork.ozlabs.org/api/series/4811/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-mtd/list/?series=4811","date":"2017-09-24T10:59:19","name":"K2G: Add QSPI support","version":3,"mbox":"http://patchwork.ozlabs.org/series/4811/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/817892/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/817892/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org; 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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=iezXROWR6dI1BnHf5HknfBwzeReNiqPEYOGMZZH3Zxo=;\n\tb=PehDQ1+wodfrz2\n\tqM1To7XMTjphkwg7SUhDWTkAg4EdMSFqg+R9aEq1IdX6s5/tD/H17eWtQa1TviA7Kk1fOgRuye95b\n\tz57QFlC/VjyVwqfl00ydYjgcC2ozDOhaWaC8ET3q0LWEzPXWFOHwNU96i/o3vLSwseEi4kzmv1lcL\n\tElFXqp1emqQxrMbnvjx19dyxgFnJEwG92WzVU42Ek5SoALtyKW/w2qBvUhDjwbfiNGHIYr3dTxh7J\n\tk6gSYwZ1cUSwxv2eTMt12IYHzllGiYD2uzz3lw82xqjXWgGDKbyljLnKcJtxpelA/XBpyH4zEmwYK\n\ty7CH+01Sup46m+r7gvGQ==;","v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com;\n\ts=ti-com-17Q1; t=1506250758;\n\tbh=uI+4+QRwxXE07v/9ifxsyixDo7u2QnF00OF4Wf40I3o=;\n\th=From:To:CC:Subject:Date:In-Reply-To:References;\n\tb=HxxPpuvw/e7NJX5rcIm2t8c6eQveQB58xsFCaBWrkWMXBVyYhSGolUbx/ReHtF/Jm\n\tFK9vz6jpo0C3QNxlk1kqqDqGUaxk9moBnH4K76F5RemUXrYr7Fhes4vOC15NrO5y8i\n\tY7GH3E4zXx13MgWZ809YKoDghG30j0bPX/Uf8DYY="],"From":"Vignesh R ","To":"Marek Vasut , Cyrille Pitchen\n\t","Subject":"[PATCH v3 3/5] mtd: spi-nor: cadence-quadspi: Add new binding to\n\tenable loop-back circuit","Date":"Sun, 24 Sep 2017 16:29:22 +0530","Message-ID":"<20170924105924.23923-4-vigneshr@ti.com>","X-Mailer":"git-send-email 2.14.1","In-Reply-To":"<20170924105924.23923-1-vigneshr@ti.com>","References":"<20170924105924.23923-1-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-20170924_040007_934190_96FEEC8F ","X-CRM114-Status":"UNSURE ( 7.81 )","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 [198.47.19.17 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 ","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Boris Brezillon ,\n\tVignesh R , devicetree@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, Rob Herring ,\n\tlinux-mtd@lists.infradead.org,\n\tBrian Norris , \n\tDavid Woodhouse ,\n\tlinux-arm-kernel ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"linux-mtd\" ","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\nAdd DT parameter cdns,rclk-en to help enable adapted loop-back circuit\nfor boards which do have QSPI return clock provided. Update binding\ndocumentation for the same.\n\nSigned-off-by: Vignesh R \nAcked-by: Rob Herring \n---\n Documentation/devicetree/bindings/mtd/cadence-quadspi.txt | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt\nindex 7dbe3bd9ac56..bb2075df9b38 100644\n--- a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt\n+++ b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt\n@@ -16,6 +16,9 @@ Required properties:\n \n Optional properties:\n - cdns,is-decoded-cs : Flag to indicate whether decoder is used or not.\n+- cdns,rclk-en : Flag to indicate that QSPI return clock is used to latch\n+ the read data rather than the QSPI clock. Make sure that QSPI return\n+ clock is populated on the board before using this property.\n \n Optional subnodes:\n Subnodes of the Cadence Quad SPI controller are spi slave nodes with additional\n","prefixes":["v3","3/5"]}