From patchwork Tue Apr 21 14:44:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 11501729 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 043F96CA for ; Tue, 21 Apr 2020 14:44:24 +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 C3812206E9 for ; Tue, 21 Apr 2020 14:44:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZkzxzIjd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3812206E9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sigxcpu.org 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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4pO1kN3hoDXZNQdMa98gJGLTJnq5fm7z2cUaDgowXQ4=; b=ZkzxzIjdX5gRoC 0osBQc83Jh6ETI/CTouDALhmWxSCSnoXpGvzuzxVncaBashFjd27qNs77kuB5Ngdy3PejXYqv70vU eMQ61EZkiI0A0+EnFaQI9/wrpM9n9qFFINL41N0ddzxCQ/W4/uDSmqw9j9o+dEcbVfUEcntkjT1vK p/AWyupMFFzKB2H9X/NqmTZCbVyrWYN9k3IYWaUeKRs9DyNw0Zp/okfralFLYx/qlvGMSTleHtbP2 6zsAdbX/hi/ZrUaphee3ofeAchDXZ0m1hsg6+yE3pOLdkABPt2ohbzgcc1TuztYZshfvIhtRx3hrm CLhXlKk6A48kpFwQ1adw==; 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 1jQu8M-0002qy-5i; Tue, 21 Apr 2020 14:44:22 +0000 Received: from honk.sigxcpu.org ([24.134.29.49]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQu8J-0002pE-6Z for linux-arm-kernel@lists.infradead.org; Tue, 21 Apr 2020 14:44:20 +0000 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id E9401FB02; Tue, 21 Apr 2020 16:44:16 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dcfIa4vMcMYR; Tue, 21 Apr 2020 16:44:15 +0200 (CEST) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 5C7F9400FA; Tue, 21 Apr 2020 16:44:14 +0200 (CEST) From: =?utf-8?q?Guido_G=C3=BCnther?= To: "Rob Herring" , "Shawn Guo" , "Sascha Hauer" , "Pengutronix Kernel Team" , "Fabio Estevam" , "NXP Linux Team" , "Angus Ainslie (Purism)" , "Martin Kepplinger" , =?utf-8?q?Guido_G=C3=BCnther?= , "Abel Vesa" , "Anson Huang" , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD_GPU Date: Tue, 21 Apr 2020 16:44:13 +0200 Message-Id: <1a084c980fb5373f15b03ad83a404fc37eac085e.1587480093.git.agx@sigxcpu.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200421_074419_409253_0C92FFDD X-CRM114-Status: GOOD ( 11.94 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [24.134.29.49 listed in list.dnswl.org] 0.0 SPF_NONE SPF: sender does not publish an SPF Record 0.0 SPF_HELO_NONE SPF: HELO does not publish an 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org According to the imx8mq data sheet running VDD_GPU at 0.9V is enough when not overclocking to 1GHz (which we currently don't do). Signed-off-by: Guido Günther --- arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts index 10eca94194be..0526ebf0da0f 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts @@ -318,7 +318,7 @@ buck3_reg: BUCK3 { regulator-min-microvolt = <700000>; regulator-max-microvolt = <1300000>; regulator-boot-on; - rohm,dvs-run-voltage = <1000000>; + rohm,dvs-run-voltage = <900000>; }; buck4_reg: BUCK4 {