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: 204661 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=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, 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 63C43C34022 for ; Tue, 18 Feb 2020 01:58:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 256EA206D5 for ; Tue, 18 Feb 2020 01:58:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726171AbgBRB6Z (ORCPT ); Mon, 17 Feb 2020 20:58:25 -0500 Received: from inva021.nxp.com ([92.121.34.21]:39868 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726140AbgBRB6Z (ORCPT ); Mon, 17 Feb 2020 20:58:25 -0500 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 Cc: Linux-imx@nxp.com 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 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.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>; };