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=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 63E9BC43215 for ; Tue, 19 Nov 2019 06:11:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3807020692 for ; Tue, 19 Nov 2019 06:11:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574143874; bh=c/ibTNbMklbkWTbukVx7j2j/iB5SSjr6ytTVhUTXei8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EgzXd91X+CrVs+tXcu8jhODOOPO6sZ9p8JZZ0QrYVXO0nagiwuyORGvCmE+ZkrHVM jyAyudCCFm/ntQRBtM2reotBFr5UgP1Z4Es/d8asN1nmuVMd2EDSrx2q4AwRv3WZzV Hs8LUNHFt/hPhdY2ogUYhWwCDWKwdXiW1w58NLcI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728295AbfKSFY6 (ORCPT ); Tue, 19 Nov 2019 00:24:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:41362 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728286AbfKSFYx (ORCPT ); Tue, 19 Nov 2019 00:24:53 -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 1254821783; Tue, 19 Nov 2019 05:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574141092; bh=c/ibTNbMklbkWTbukVx7j2j/iB5SSjr6ytTVhUTXei8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nU3CQflYIo9FCyINKOGWkZ3K8qHxjC5EYbQMhLU9g5VPH5QOPyC7WJb+Kk7iGduen qkL1FVIlq+glN1ppQC4TVzUkjM4X+PzYSUjqL8DwDraDueeAMrz0m90mVoZ3R6/vob P1KFwzzk+A4yAhKHoc+4U1u5i1CYNbris0+Py3Kg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andre Przywara , Martin Lucina , Maxime Ripard , Chen-Yu Tsai , Sasha Levin Subject: [PATCH 4.19 041/422] arm64: dts: allwinner: a64: Olinuxino: fix DRAM voltage Date: Tue, 19 Nov 2019 06:13:58 +0100 Message-Id: <20191119051402.602701766@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119051400.261610025@linuxfoundation.org> References: <20191119051400.261610025@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: Andre Przywara [ Upstream commit 93366b49a35f3a190052734b3f32c8fe2535b53f ] The Olinuxino board uses DDR3L chips which are supposed to be driven with 1.35V. The reset default of the AXP is properly set to 1.36V. While technically the chips can also run at 1.5 volts, changing the voltage on the fly while booting Linux is asking for trouble. Also running at a lower voltage saves power. So fix the DCDC5 value to match the actual board design. Signed-off-by: Andre Przywara Tested-by: Martin Lucina Acked-by: Maxime Ripard Signed-off-by: Chen-Yu Tsai Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts index 3f531393eaee9..b3f186434f363 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts @@ -142,10 +142,14 @@ /* DCDC3 is polyphased with DCDC2 */ +/* + * The board uses DDR3L DRAM chips. 1.36V is the closest to the nominal + * 1.35V that the PMIC can drive. + */ ®_dcdc5 { regulator-always-on; - regulator-min-microvolt = <1500000>; - regulator-max-microvolt = <1500000>; + regulator-min-microvolt = <1360000>; + regulator-max-microvolt = <1360000>; regulator-name = "vcc-ddr3"; }; -- 2.20.1