From patchwork Tue Feb 18 01:52:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11387759 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F019930 for ; Tue, 18 Feb 2020 01:58:33 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 34C1520836 for ; Tue, 18 Feb 2020 01:58:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="IUg4PCtJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34C1520836 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=ChduEWdHvOII/2YPHc1pB2O/c+jPaVILXh6q1PZLDvo=; b=IUg 4PCtJBJbS9dtDrYqzonl8eKj24+y9qMDCCdh0O58r7Z7Iu2+I0Lh9rlpf6tElWhxOtu/6WHLZXkqi mCbI39LL0xhQO6b7NQV8Dt4vTtuQ+pfIOvZM8cMWfW51vGd28zaPs3pjYWYgww9O8MYL2plaGUMdE ftcZXhcfvJY4u8I1QOgyROc6L6aLkh6e/pNy3Uq8W5MxdIkZwef5u05uoVj8E8zcY7gildvmq8fXr J7NyC6gVtVkFj+Of2p/LziNL26EnyDqvGGkQ9rW+IG1fzTK97tC0XPz15TxZeBc4qY/uZaDUZDGsh ZrF8p4x568aqkhka7gF4Gar40GIMK/A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j3s9d-0005xs-C1; Tue, 18 Feb 2020 01:58:29 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j3s9Z-0005x1-Ka for linux-arm-kernel@lists.infradead.org; Tue, 18 Feb 2020 01:58:27 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id CC4B5202EF5; Tue, 18 Feb 2020 02:58:23 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 7C9C6202EE6; Tue, 18 Feb 2020 02:58:17 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 3B86D40245; Tue, 18 Feb 2020 09:58:09 +0800 (SGT) From: Anson Huang To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, abel.vesa@nxp.com, leonard.crestez@nxp.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: imx8mn-ddr4-evk: Adjust 1.2GHz OPP voltage to OD mode Date: Tue, 18 Feb 2020 09:52:32 +0800 Message-Id: <1581990752-10219-1-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200217_175825_817528_75773186 X-CRM114-Status: UNSURE ( 7.02 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org According to latest datasheet Rev.0, 10/2019, there is restriction as below: "If VDD_SOC/GPU/DDR = 0.95V, then VDD_ARM must be >= 0.95V." As by default SoC is running at OD mode(VDD_SOC = 0.95V), so VDD_ARM 1.2GHz OPP's voltage should be increased to 0.95V. Signed-off-by: Anson Huang --- arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts index 2497eeb..7a61a1a 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts @@ -13,6 +13,12 @@ compatible = "fsl,imx8mn-ddr4-evk", "fsl,imx8mn"; }; +&a53_opp_table { + opp-1200000000 { + opp-microvolt = <950000>; + }; +}; + &A53_0 { cpu-supply = <&buck2_reg>; };