From patchwork Mon Sep 9 18:42:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Jernej_=C5=A0krabec?= X-Patchwork-Id: 11138483 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 11E6B14DB for ; Mon, 9 Sep 2019 18:43:04 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E3FD52089F for ; Mon, 9 Sep 2019 18:43:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="shL/CzP8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E3FD52089F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=siol.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=lMkTqCbADQtR+EiPgUmdlw9f6ViV/yx+aiX+BKh0cvY=; b=shL/CzP8GWTlLo UwFTdpzLenXgyPZVF4hn7zWRC/pVnkiQWjOrlnmUgUec036KETcogy4SUrslwercTRrpcGWeikC7p 4dFwIqVwjWp2vrrKjvZ2k8RV23w4Xi+QutDGNe2HMWsWPNv7eaiIPOJ7ywim/cxg+S0PE07C6FawS ldvQT4wnQhdXk4R8+muLsNJLwQmj7nIquYlaSCc2RqBf51pMT+htErmQFNXLIdZao4cgqiSR2q2ta LvmVK0nt69gwcvbuTAXll/F/Cze5Q9OuHZ7IuMqzhwXUfzI44wCKhXyn+1g/3A4eKnnynbSG385+Q nBq3Vu49dwwfl+6ghs0g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i7Ocr-0006zW-Pp; Mon, 09 Sep 2019 18:42:57 +0000 Received: from mailoutvs59.siol.net ([185.57.226.250] helo=mail.siol.net) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7Oco-0006yV-9K for linux-arm-kernel@lists.infradead.org; Mon, 09 Sep 2019 18:42:56 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id C2593521F83; Mon, 9 Sep 2019 20:42:44 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta09.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta09.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id kZvK5lhn2c_1; Mon, 9 Sep 2019 20:42:44 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 69473521ABF; Mon, 9 Sep 2019 20:42:44 +0200 (CEST) Received: from localhost.localdomain (cpe-86-58-59-25.static.triera.net [86.58.59.25]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id 7752F521F83; Mon, 9 Sep 2019 20:42:42 +0200 (CEST) From: Jernej Skrabec To: mripard@kernel.org, wens@csie.org Subject: [PATCH v2] arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay Date: Mon, 9 Sep 2019 20:42:35 +0200 Message-Id: <20190909184235.13196-1-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190909_114254_489972_89F3F834 X-CRM114-Status: UNSURE ( 8.40 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [185.57.226.250 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, Ondrej Jirman , linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Depending on kernel and bootloader configuration, it's possible that Realtek ethernet PHY isn't powered on properly. According to the datasheet, it needs 30ms to power up and then some more time before it can be used. Fix that by adding 100ms ramp delay to regulator responsible for powering PHY. Fixes: 94dcfdc77fc5 ("arm64: allwinner: pine64-plus: Enable dwmac-sun8i") Suggested-by: Ondrej Jirman Signed-off-by: Jernej Skrabec --- Changes from v1: - Added comment with explanation why delay is needed - Updated commit message arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts index 24f1aac366d6..d5b6e8159a33 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts @@ -63,3 +63,12 @@ reg = <1>; }; }; + +®_dc1sw { + /* + * Ethernet PHY needs 30ms to properly power up and some more + * to initialize. 100ms should be plenty of time to finish + * whole process. + */ + regulator-enable-ramp-delay = <100000>; +};