From patchwork Thu Nov 22 10:28:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QmlhbyBIdWFuZyAo6buE5b2qKQ==?= X-Patchwork-Id: 1001656 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=mediatek.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 430wfF4mQzz9s5c for ; Thu, 22 Nov 2018 21:29:09 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394347AbeKVVHw (ORCPT ); Thu, 22 Nov 2018 16:07:52 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:61957 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2390677AbeKVVHw (ORCPT ); Thu, 22 Nov 2018 16:07:52 -0500 X-UUID: cc58944a3b2f4a54a7bdc3fb3db0b0c3-20181122 X-UUID: cc58944a3b2f4a54a7bdc3fb3db0b0c3-20181122 Received: from mtkmrs01.mediatek.inc [(172.21.131.159)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 2044991465; Thu, 22 Nov 2018 18:28:58 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 22 Nov 2018 18:28:57 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 22 Nov 2018 18:28:56 +0800 From: Biao Huang To: , CC: , , , , , , , , , , , , , Subject: [v5, PATCH 2/2] dt-binding: mediatek-dwmac: add binding document for MediaTek MT2712 DWMAC Date: Thu, 22 Nov 2018 18:28:41 +0800 Message-ID: <1542882521-18874-3-git-send-email-biao.huang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1542882521-18874-1-git-send-email-biao.huang@mediatek.com> References: <1542882521-18874-1-git-send-email-biao.huang@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The commit adds the device tree binding documentation for the MediaTek DWMAC found on MediaTek MT2712. Signed-off-by: Biao Huang --- .../devicetree/bindings/net/mediatek-dwmac.txt | 78 ++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.txt diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.txt b/Documentation/devicetree/bindings/net/mediatek-dwmac.txt new file mode 100644 index 0000000..0f8a915 --- /dev/null +++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.txt @@ -0,0 +1,78 @@ +MediaTek DWMAC glue layer controller + +This file documents platform glue layer for stmmac. +Please see stmmac.txt for the other unchanged properties. + +The device node has following properties. + +Required properties: +- compatible: Should be "mediatek,mt2712-gmac" for MT2712 SoC +- reg: Address and length of the register set for the device +- interrupts: Should contain the MAC interrupts +- interrupt-names: Should contain a list of interrupt names corresponding to + the interrupts in the interrupts property, if available. + Should be "macirq" for the main MAC IRQ +- clocks: Must contain a phandle for each entry in clock-names. +- clock-names: The name of the clock listed in the clocks property. These are + "axi", "apb", "mac_main", "ptp_ref" for MT2712 SoC +- mac-address: See ethernet.txt in the same directory +- phy-mode: See ethernet.txt in the same directory + +Optional properties: +- mediatek,tx-delay: TX clock delay macro value. Range is 0~31. Default is 0. + It should be defined for rgmii/rgmii-rxid/mii interface. +- mediatek,rx-delay: RX clock delay macro value. Range is 0~31. Default is 0. + It should be defined for rgmii/rgmii-txid/mii/rmii interface. +- mediatek,fine-tune: boolean property, if present indicates that fine delay + is selected for rgmii interface. + If present, tx-delay/rx-delay is 170+/-50ps per stage. + Else tx-delay/rx-delay of coarse delay macro is 0.55+/-0.2ns per stage. + This property do not apply to non-rgmii PHYs. + Only coarse-tune delay is supported for mii/rmii PHYs. +- mediatek,rmii-rxc: boolean property, if present indicates that the rmii + reference clock, which is from external PHYs, is connected to RXC pin + on MT2712 SoC. + Otherwise, is connected to TXC pin. +- mediatek,txc-inverse: boolean property, if present indicates that + 1. tx clock will be inversed in mii/rgmii case, + 2. tx clock inside MAC will be inversed relative to reference clock + which is from external PHYs in rmii case, and it rarely happen. +- mediatek,rxc-inverse: boolean property, if present indicates that + 1. rx clock will be inversed in mii/rgmii case. + 2. reference clock will be inversed when arrived at MAC in rmii case. +- assigned-clocks: mac_main and ptp_ref clocks +- assigned-clock-parents: parent clocks of the assigned clocks + +Example: + eth: ethernet@1101c000 { + compatible = "mediatek,mt2712-gmac"; + reg = <0 0x1101c000 0 0x1300>; + interrupts = ; + interrupt-names = "macirq"; + phy-mode ="rgmii-id"; + mac-address = [00 55 7b b5 7d f7]; + clock-names = "axi", + "apb", + "mac_main", + "ptp_ref", + "ptp_top"; + clocks = <&pericfg CLK_PERI_GMAC>, + <&pericfg CLK_PERI_GMAC_PCLK>, + <&topckgen CLK_TOP_ETHER_125M_SEL>, + <&topckgen CLK_TOP_ETHER_50M_SEL>; + assigned-clocks = <&topckgen CLK_TOP_ETHER_125M_SEL>, + <&topckgen CLK_TOP_ETHER_50M_SEL>; + assigned-clock-parents = <&topckgen CLK_TOP_ETHERPLL_125M>, + <&topckgen CLK_TOP_APLL1_D3>; + mediatek,pericfg = <&pericfg>; + mediatek,tx-delay = <9>; + mediatek,rx-delay = <9>; + mediatek,fine-tune; + mediatek,rmii-rxc; + mediatek,txc-inverse; + mediatek,rxc-inverse; + snps,txpbl = <32>; + snps,rxpbl = <32>; + snps,reset-gpio = <&pio 87 GPIO_ACTIVE_LOW>; + snps,reset-active-low; + };