From patchwork Wed Jan 15 07:10:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loc Ho X-Patchwork-Id: 3490391 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8706C9F381 for ; Wed, 15 Jan 2014 07:12:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9501A200F3 for ; Wed, 15 Jan 2014 07:12:14 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7DA7920123 for ; Wed, 15 Jan 2014 07:12:13 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W3KdZ-0003n9-Nx; 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Tue, 14 Jan 2014 23:11:03 -0800 (PST) X-Received: by 10.66.16.162 with SMTP id h2mr624038pad.129.1389769863706; Tue, 14 Jan 2014 23:11:03 -0800 (PST) Received: from localhost ([198.137.200.11]) by mx.google.com with ESMTPSA id ug2sm7647041pac.21.2014.01.14.23.11.02 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 14 Jan 2014 23:11:02 -0800 (PST) From: Loc Ho To: olof@lixom.net, tj@kernel.org, arnd@arndb.de Subject: [PATCH v7 2/4] Documentation: Add APM X-Gene SoC 15Gbps Multi-purpose PHY driver binding documentation Date: Wed, 15 Jan 2014 00:10:38 -0700 Message-Id: <1389769840-15469-3-git-send-email-lho@apm.com> X-Mailer: git-send-email 1.5.5 In-Reply-To: <1389769840-15469-2-git-send-email-lho@apm.com> References: <1389769840-15469-1-git-send-email-lho@apm.com> <1389769840-15469-2-git-send-email-lho@apm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140115_021126_575592_BE003ED2 X-CRM114-Status: GOOD ( 13.17 ) X-Spam-Score: -4.2 (----) Cc: devicetree@vger.kernel.org, Suman Tripathi , linux-scsi@vger.kernel.org, dmilburn@redhat.com, jcm@redhat.com, patches@apm.com, linux-ide@vger.kernel.org, Loc Ho , Tuan Phan , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Loc Ho Signed-off-by: Tuan Phan Signed-off-by: Suman Tripathi --- .../devicetree/bindings/phy/apm-xgene-phy.txt | 94 ++++++++++++++++++++ 1 files changed, 94 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/phy/apm-xgene-phy.txt diff --git a/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt b/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt new file mode 100644 index 0000000..4ffbae0 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/apm-xgene-phy.txt @@ -0,0 +1,94 @@ +* APM X-Gene 15Gbps Multi-purpose PHY nodes + +PHY nodes are defined to describe on-chip 15Gbps Multi-purpose PHY. Each +PHY (pair of lanes) has its own node. + +Required properties: +- compatible : Shall be "apm,xgene-phy" or + "apm,xgene-phy-ext". The "apm,xgene-phy" describes + an PHY with internal reference PLL located within + the IP. The "apm,xgene-phy-ext" describes an PHY + where the internal reference PLL located outside of + the IP. +- reg : First PHY memory resource is the SDS PHY access + resource. + Second PHY memory resource is the SDS PHY access + resource outside of the IP if it is type + "apm,xgene-phy-ext". +- #phy-cells : Shall be 1 as it expects one argument for setting + the mode of the PHY. Possible values are 0 (SATA), + 1 (SGMII), 2 (PCIe), 3 (USB), and 4 (XFI). + +Optional properties: +- status : Shall be "ok" if enabled or "disabled" if disabled. + Default is "ok". +- apm,tx-eye-tuning : Manual control to fine tune the capture of the serial + bit lines from the automatic calibrated position. + Two set of 3-tuple setting for each (up to 3) + supported link speed on the host. Range from 0 to + 127 in unit of one bit period. Default is 10. +- apm,tx-eye-direction : Eye tuning manual control direction. 0 means sample + data earlier than the nominal sampling point. 1 means + sample data later than the nominal sampling point. + Two set of 3-tuple setting for each (up to 3) + supported link speed on the host. Default is 0. +- apm,tx-boost-gain : Frequency boost AC (LSB 3-bit) and DC (2-bit) + gain control. Two set of 3-tuple setting for each + (up to 3) supported link speed on the host. Range is + between 0 to 31 in unit of dB. Default is 3. +- apm,tx-amplitude : Amplitude control. Two set of 3-tuple setting for + each (up to 3) supported link speed on the host. + Range is between 0 to 199500 in unit of uV. + Default is 199500 uV. +- apm,tx-pre-cursor1 : 1st pre-cursor emphasis taps control. Two set of + 3-tuple setting for each (up to 3) supported link + speed on the host. Range is 0 to 273000 in unit of + uV. Default is 0. +- apm,tx-pre-cursor2 : 2st pre-cursor emphasis taps control. Two set of + 3-tuple setting for each (up to 3) supported link + speed on the host. Range is 0 to 127400 in unit uV. + Default is 0x0. +- apm,tx-post-cursor : Post-cursor emphasis taps control. Two set of + 3-tuple setting for Gen1, Gen2, and Gen3. Range is + between 0 to 0x1f in unit of 18.2mV. Default is 0xf. +- apm,tx-speed : Tx operating speed. One set of 3-tuple for each + supported link speed on the host. + 0 = 1-2Gbps + 1 = 2-4Gbps (1st tuple default) + 2 = 4-8Gbps + 3 = 8-15Gbps (2nd tuple default) + 4 = 2.5-4Gbps + 5 = 4-5Gbps + 6 = 5-6Gbps + 7 = 6-16Gbps (3rd tuple default) + +NOTE: PHY override parameters are board specific setting. + +Example: + phy1: phy@1f21a000 { + compatible = "apm,xgene-phy"; + reg = <0x0 0x1f21a000 0x0 0x100>; + #phy-cells = <1>; + status = "disabled"; + apm,tx-boost-gain = <2 2 2 2 2 2>; + apm,tx-eye-tuning = <10 10 10 10 10 10>; + }; + + phy2: phy@1f22a000 { + compatible = "apm,xgene-phy"; + reg = <0x0 0x1f22a000 0x0 0x100>; + #phy-cells = <1>; + status = "ok"; + apm,tx-boost-gain = <2 2 2 2 2 2>; + apm,tx-eye-tuning = <10 10 10 5 5 5>; + }; + + phy3: phy@1f23a000 { + compatible = "apm,xgene-phy-ext"; + reg = <0x0 0x1f23a000 0x0 0x100>, + <0x0 0x1f2d0000 0x0 0x100>; + #phy-cells = <1>; + status = "ok"; + apm,tx-boost-gain = <3 3 3 3 3 3>; + apm,tx-eye-tuning = <10 10 10 12 12 12>; + };