From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4DCBFA372C for ; Fri, 8 Nov 2019 19:01:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AEAD32087E for ; Fri, 8 Nov 2019 19:01:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239710; bh=A8OJ0gmDn66ao2MoOx6aQnaAj57Lc5OKhEELCpvSyIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vpN/3ouk5PQqIPdxW+xTtAL8OtDbAomyThOJW+vf+DRIHfqNkw+odfYwbEKL4KTSB jl3NX7Lf8hSMY3rzIs2OvidCSxvSx+QDy6HyietPrh0cJTN8w54mwuN5/JYPeVmMIi wOVIl1MprRPDT0/xLeitbSDaL0fM5iys2NEKhsZY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390303AbfKHTBp (ORCPT ); Fri, 8 Nov 2019 14:01:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:59154 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732559AbfKHTBn (ORCPT ); Fri, 8 Nov 2019 14:01:43 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9F0AE2067B; Fri, 8 Nov 2019 19:01:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239703; bh=A8OJ0gmDn66ao2MoOx6aQnaAj57Lc5OKhEELCpvSyIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xPVhRFwD43vzOQNEWwrG/oAPkct3w79LcSyOb3Z770xLY/KM4ISCQEoU4UwGjzcvx KPv3Ao+tnTw2VdsMj/U0PRGCJ2C+kaukKR+GDd2uExsDxobweAfQdwPlJSzwDENEHE oPEqtnfO6q4s8d1fkaLeuR34g5kf4aUJEYiyEV5M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ondrej Jirman , Jernej Skrabec , Maxime Ripard , Sasha Levin Subject: [PATCH 4.19 04/79] arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay Date: Fri, 8 Nov 2019 19:49:44 +0100 Message-Id: <20191108174747.567732384@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191108174745.495640141@linuxfoundation.org> References: <20191108174745.495640141@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jernej Skrabec [ Upstream commit 2511366797fa6ab4a404b4b000ef7cd262aaafe8 ] 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 Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin --- 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 24f1aac366d64..d5b6e8159a335 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>; +}; -- 2.20.1