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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 DDA66CA9EC7 for ; Wed, 30 Oct 2019 15:54:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC0232173E for ; Wed, 30 Oct 2019 15:54:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572450860; bh=Pkh8O6u6Xi3YkNZ+kgSiq60tEkoy6kaOzhQaxlLsPqA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pNHHXRw3lSw8tdTCb9lZpZdY7G7nxrsBhsylEqP/12hFu0NSRSGVG5yah1d3XuiuH 2DY3OsSk9NfRjezbRCzjh6ZavExNtOX694uoDLLaVWqkji4OztxDjjKksx528hjzI4 OSm9kboRAvuFQyvFGgbBixqhXYvU2bQrugWmMZsY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728321AbfJ3PyT (ORCPT ); Wed, 30 Oct 2019 11:54:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:55738 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727813AbfJ3PyT (ORCPT ); Wed, 30 Oct 2019 11:54:19 -0400 Received: from sasha-vm.mshome.net (100.50.158.77.rev.sfr.net [77.158.50.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5D79521734; Wed, 30 Oct 2019 15:54:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572450858; bh=Pkh8O6u6Xi3YkNZ+kgSiq60tEkoy6kaOzhQaxlLsPqA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=13HjwxueiSx+RBCJKaoKMIdjQGzaZ1Ss1amqlGss+lGaNZeREkI1HqRsZa22pKKio o2OGXZAkpEjFyuX2tMbLq0HJT4Uk6UjXkAVWKQlxDNu/0VY9Jm+LyFEPNArvB1SfIF avB1AtHqhHAdEW0g+56rRLXWTRMsMvSrBQfDf9zc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jernej Skrabec , Maxime Ripard , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 04/38] arm64: dts: allwinner: a64: sopine-baseboard: Add PHY regulator delay Date: Wed, 30 Oct 2019 11:53:32 -0400 Message-Id: <20191030155406.10109-4-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191030155406.10109-1-sashal@kernel.org> References: <20191030155406.10109-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Jernej Skrabec [ Upstream commit ccdf3aaa27ded6db9a93eed3ca7468bb2353b8fe ] It turns out that sopine-baseboard needs same fix as pine64-plus for ethernet PHY. Here too Realtek ethernet PHY chip needs additional power on delay to properly initialize. Datasheet mentions that chip needs 30 ms to be properly powered on and that it needs some more time to be initialized. Fix that by adding 100ms ramp delay to regulator responsible for powering PHY. Note that issue was found out and fix tested on pine64-lts, but it's basically the same as sopine-baseboard, only layout and connectors differ. Fixes: bdfe4cebea11 ("arm64: allwinner: a64: add Ethernet PHY regulator for several boards") Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin --- .../boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts index c21f2331add60..285cb7143b96c 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts @@ -113,6 +113,12 @@ }; ®_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>; regulator-name = "vcc-phy"; }; -- 2.20.1