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,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 095BBFA372C for ; Fri, 8 Nov 2019 11:43:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA4C6222CF for ; Fri, 8 Nov 2019 11:43:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573213412; bh=LSJuR6xuJV+Zd/1X8vuZZ7n0Yx4USt8B+Uah0jtEuXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZFJf83wSZq3oQHe3ZqHi8imMmMaIU+MmHXzKxrnYbLJxDuAdGfkhcRiGQvj6oDCMh jIcoMrSXgx2gX2caE7QDzo+MUd+VUCh2vRF7dvKUKnYj8VT6TL91tHImf8kFfO6ScV cpKP1XuiPs1mM0rQmUF/D6xdRM8J/jo97ft/eIFs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390474AbfKHLnb (ORCPT ); Fri, 8 Nov 2019 06:43:31 -0500 Received: from mail.kernel.org ([198.145.29.99]:57704 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390410AbfKHLnS (ORCPT ); Fri, 8 Nov 2019 06:43:18 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 4746B222CF; Fri, 8 Nov 2019 11:43:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573213398; bh=LSJuR6xuJV+Zd/1X8vuZZ7n0Yx4USt8B+Uah0jtEuXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YYsaFNRT5UjfnhtYlbbEOCV7nJI/uJXkNj5nMdH0LSWNINGw23EiU/BvL5lhcRcJs ByBkrm4kGjf6jMhpPinaxLu/jO8hED2eM8p0IVSlnUsTkdXAsD0RLN8BCoDkt+EKtf 6mM7OasqouP6V4Yqr5NmhBnz8oqnu4AaQLtnlUG0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Andre Przywara , Martin Lucina , Maxime Ripard , Chen-Yu Tsai , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 005/103] arm64: dts: allwinner: a64: Olinuxino: fix DRAM voltage Date: Fri, 8 Nov 2019 06:41:30 -0500 Message-Id: <20191108114310.14363-5-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191108114310.14363-1-sashal@kernel.org> References: <20191108114310.14363-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 338e786155b1f..2ef779b027572 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts @@ -120,10 +120,14 @@ /* 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