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=unavailable 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 3BFBFCA9EC6 for ; Wed, 30 Oct 2019 16:01:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 084CD20856 for ; Wed, 30 Oct 2019 16:01:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572451316; bh=A8OJ0gmDn66ao2MoOx6aQnaAj57Lc5OKhEELCpvSyIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JoefJRsFGeFptHQy+rcTiOUxoc+vMVxX9jKVN9lsq323WzGKheIMZVBHe/qcvcR0Y VyTStEXv0OdC52xAWZ8Qzy/k5Mt67XVIJenG14yE9qA4c7PGTarJkTzadv8o9wkqDH FNllRb8ebLWqCloX1HWosHGaML0q4wsncubHX3Go= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727425AbfJ3QBv (ORCPT ); Wed, 30 Oct 2019 12:01:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:55708 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728301AbfJ3PyR (ORCPT ); Wed, 30 Oct 2019 11:54:17 -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 31F5120874; Wed, 30 Oct 2019 15:54:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572450856; bh=A8OJ0gmDn66ao2MoOx6aQnaAj57Lc5OKhEELCpvSyIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HbTI4sGqhdtgCGlPpKZa1bFAZ9mvCiMscKeHF9vCjop2ktnGKNoKjZC4qwgRT59Bu loHqyF/IxGTBfDx9yHBlbC4cLRSuUktG0dv71+mg3VBJMFfBxU77rxy2m5+5YuHR0b dQXJv1fiwR458xC0b2Qe2sALsUqmruPTp8qizESk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jernej Skrabec , Ondrej Jirman , Maxime Ripard , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 03/38] arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay Date: Wed, 30 Oct 2019 11:53:31 -0400 Message-Id: <20191030155406.10109-3-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 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