From patchwork Mon Oct 8 23:49:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Grygorii Strashko X-Patchwork-Id: 10631697 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C338B112B for ; Mon, 8 Oct 2018 23:51:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B2BEC29697 for ; Mon, 8 Oct 2018 23:51:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A596E29984; Mon, 8 Oct 2018 23:51:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3ED6029697 for ; Mon, 8 Oct 2018 23:51:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726664AbeJIHEH (ORCPT ); Tue, 9 Oct 2018 03:04:07 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:42952 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725794AbeJIHEG (ORCPT ); Tue, 9 Oct 2018 03:04:06 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id w98Nnqvo126361; Mon, 8 Oct 2018 18:49:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1539042592; bh=3uC4YX3i2GahEKMhydzhXXxO77zZOflGn5HPNJiU2+k=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ThZ9KEoWRoHFh1u+FOaUoxtuPmwMM90arV6T1MoPQ/ALIZQHtp5TpxXQ0J9wlsUoh xw3NoQNsh3+VBoN1ViU2aFWH3W24FXU5CHHjVvzPCykMsTNNpi9k2/n0MBOD91ZT2N PtUD7z0eeMvyv64wyqAJn1ONyQN2BuEneLqi7uls= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id w98NnqXu023944; Mon, 8 Oct 2018 18:49:52 -0500 Received: from DFLE104.ent.ti.com (10.64.6.25) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Mon, 8 Oct 2018 18:49:52 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Mon, 8 Oct 2018 18:49:51 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w98Nnp7m023110; Mon, 8 Oct 2018 18:49:51 -0500 Received: from localhost (uda0226610.dhcp.ti.com [128.247.59.147]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id w98Nnpx25216; Mon, 8 Oct 2018 18:49:51 -0500 (CDT) From: Grygorii Strashko To: "David S. Miller" , , Tony Lindgren , Rob Herring , Kishon Vijay Abraham I CC: Sekhar Nori , , , , Grygorii Strashko Subject: [RFC PATCH 02/11] dt-bindings: phy: add cpsw port interface mode selection phy bindings Date: Mon, 8 Oct 2018 18:49:40 -0500 Message-ID: <20181008234949.15416-3-grygorii.strashko@ti.com> X-Mailer: git-send-email 2.10.5 In-Reply-To: <20181008234949.15416-1-grygorii.strashko@ti.com> References: <20181008234949.15416-1-grygorii.strashko@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add CPSW Port's Interface Mode Selection PHY (phy-gmii-sel) DT Bindings Cc: Kishon Vijay Abraham I Cc: Tony Lindgren Signed-off-by: Grygorii Strashko --- .../devicetree/bindings/phy/ti-phy-gmii-sel.txt | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/ti-phy-gmii-sel.txt diff --git a/Documentation/devicetree/bindings/phy/ti-phy-gmii-sel.txt b/Documentation/devicetree/bindings/phy/ti-phy-gmii-sel.txt new file mode 100644 index 0000000..fd81421 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/ti-phy-gmii-sel.txt @@ -0,0 +1,68 @@ +CPSW Port's Interface Mode Selection PHY Tree Bindings +----------------------------------------------- + +TI am335x/am437x/dra7(am5)/dm814x CPSW3G Ethernet Subsystem supports +two 10/100/1000 Ethernet ports with selectable G/MII, RMII, and RGMII interfaces. +The interface mode is selected by configuring the MII mode selection register(s) +(GMII_SEL) in the System Control Module chapter (SCM). GMII_SEL register(s) and +bit fields placement in SCM are different between SoCs while fields meaning +is the same. + +--------------+ + +-------------------------------+ |SCM | + | CPSW | | +---------+ | + | +--------------------------------+gmii_sel | | + | | | | +---------+ | + | +----v---+ +--------+ | +--------------+ + | |Port 1..<--+-->GMII/MII<-------> + | | | | | | | + | +--------+ | +--------+ | + | | | + | | +--------+ | + | | | RMII <-------> + | +--> | | + | | +--------+ | + | | | + | | +--------+ | + | | | RGMII <-------> + | +--> | | + | +--------+ | + +-------------------------------+ + +CPSW Port's Interface Mode Selection PHY describes MII interface mode between +CPSW Port and Ethernet PHY which depends on Eth PHY and board configuration. + +CPSW Port's Interface Mode Selection PHY device should defined as child device +of SCM node (scm_conf) and can be attached to each CPSW port node using standard +PHY bindings (See phy/phy-bindings.txt). + +Required properties: +- compatible : Should be "ti,am3352-phy-gmii-sel" for am335x platform + "ti,dra7xx-phy-gmii-sel" for dra7xx/am57xx platform + "ti,am43xx-phy-gmii-sel" for am43xx platform + "ti,dm814-phy-gmii-sel" for dm814x platform +- #phy-cells : must be 2. + cell 1 - CPSW port number (starting from 1) + cell 2 - RMII refclk mode +- syscon-scm : phandle on SCM node (mfd/syscon.txt) + +Examples: + phy_gmii_sel: phy-gmii-sel { + compatible = "ti,am3352-phy-gmii-sel"; + syscon-scm = <&scm_conf>; + #phy-cells = <2>; + }; + + mac: ethernet@4a100000 { + compatible = "ti,am335x-cpsw","ti,cpsw"; + ... + + cpsw_emac0: slave@4a100200 { + ... + phys = <&phy_gmii_sel 1 1>; + }; + + cpsw_emac1: slave@4a100300 { + ... + phys = <&phy_gmii_sel 2 1>; + }; + };