From patchwork Tue Aug 20 14:53:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Ond=C5=99ej_Jirman?= X-Patchwork-Id: 1150224 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=pass (p=none dis=none) header.from=megous.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=megous.com header.i=@megous.com header.b="pr0wChX5"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46CYhd1DKDz9sNk for ; Wed, 21 Aug 2019 00:53:53 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730464AbfHTOxu (ORCPT ); Tue, 20 Aug 2019 10:53:50 -0400 Received: from vps.xff.cz ([195.181.215.36]:60112 "EHLO vps.xff.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728283AbfHTOxt (ORCPT ); Tue, 20 Aug 2019 10:53:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megous.com; s=mail; t=1566312827; bh=/wCPaAVAhM9jkrpOgFjJQndvFQSZ3vor/dhJP6G9DqM=; h=From:To:Cc:Subject:Date:References:From; b=pr0wChX5ZN4OrzzMX3Txai82qwcOk2weMbp798hGCqayc02tBmkgal0EJDif4lKiO 0Z5ZyF08kJhi3AKPIG1VQOkAsPGnlq1Ffa9zqT3kRxYLJPaLRGt+jqjuSwbMnK0NXU NDc9zrMaKXcYD+Jlu6URuc8eMVTnKofwFD/p2/Bo= From: megous@megous.com To: "David S. Miller" , Rob Herring , Mark Rutland , Maxime Ripard , Chen-Yu Tsai , Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , Maxime Coquelin Cc: Ondrej Jirman , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH 6/6] arm64: dts: allwinner: orange-pi-3: Enable ethernet Date: Tue, 20 Aug 2019 16:53:43 +0200 Message-Id: <20190820145343.29108-7-megous@megous.com> In-Reply-To: <20190820145343.29108-1-megous@megous.com> References: <20190820145343.29108-1-megous@megous.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ondrej Jirman Orange Pi 3 has two regulators that power the Realtek RTL8211E PHY. According to the datasheet, both regulators need to be enabled at the same time, or that "phy-io" should be enabled slightly earlier than "phy" regulator. RTL8211E/RTL8211EG datasheet says: Note 4: 2.5V (or 1.8/1.5V) RGMII power should be risen simultaneously or slightly earlier than 3.3V power. Rising 2.5V (or 1.8/1.5V) power later than 3.3V power may lead to errors. The driver ensures the regulator enable ordering. The timing is set in DT via startup-delay-us. We also need to wait at least 30ms after power-up/reset, before accessing the PHY registers. All values of RX/TX delay were tested exhaustively and a middle one of the range of working values was chosen. Signed-off-by: Ondrej Jirman --- .../dts/allwinner/sun50i-h6-orangepi-3.dts | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts index eda9d5f640b9..18349e60b8c6 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts @@ -15,6 +15,7 @@ aliases { serial0 = &uart0; + ethernet0 = &emac; }; chosen { @@ -56,6 +57,15 @@ regulator-max-microvolt = <5000000>; regulator-always-on; }; + + reg_gmac_2v5: gmac-2v5 { + compatible = "regulator-fixed"; + regulator-name = "gmac-2v5"; + regulator-min-microvolt = <2500000>; + regulator-max-microvolt = <2500000>; + enable-active-high; + gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>; /* PD6 */ + }; }; &cpu0 { @@ -74,6 +84,35 @@ status = "okay"; }; +&emac { + pinctrl-names = "default"; + pinctrl-0 = <&ext_rgmii_pins>; + phy-mode = "rgmii"; + phy-handle = <&ext_rgmii_phy>; + /* + * The board uses 2.5V RGMII signalling. Power sequence to enable + * the phy is to enable GMAC-2V5 and GMAC-3V (aldo2) power rails + * at the same time and to wait 100ms. The driver enables phy-io + * first. Delay is achieved with enable-ramp-delay on reg_aldo2. + */ + phy-supply = <®_aldo2>; + phy-io-supply = <®_gmac_2v5>; + allwinner,rx-delay-ps = <1500>; + allwinner,tx-delay-ps = <700>; + status = "okay"; +}; + +&mdio { + ext_rgmii_phy: ethernet-phy@1 { + compatible = "ethernet-phy-ieee802.3-c22"; + reg = <1>; + + reset-gpios = <&pio 3 14 GPIO_ACTIVE_LOW>; /* PD14 */ + reset-assert-us = <15000>; + reset-deassert-us = <40000>; + }; +}; + &hdmi { status = "okay"; }; @@ -136,6 +175,7 @@ regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-name = "vcc33-audio-tv-ephy-mac"; + regulator-enable-ramp-delay = <100000>; }; /* ALDO3 is shorted to CLDO1 */