From patchwork Thu Mar 19 16:46:02 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: 11447703 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 85B556CA for ; Thu, 19 Mar 2020 16:46:17 +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 5B3E0206D7 for ; Thu, 19 Mar 2020 16:46:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="m6VjgrEJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B3E0206D7 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: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:In-Reply-To:References: List-Owner; bh=OaAA9R7IzLuq3Omya0Ko2UDYTlDvLaaSE+ZpoN3fOnQ=; b=m6VjgrEJIEeIZC E+sk3bCfhN3VCQdHYzmtfWGClBKbXmroK2V6tvllF8Cvxws71MesB42yY76A6B+wtRTKcvuiLC1m8 3wwOulxy2959wv5EYYHp0ep4OZ09sHrXGalBMsm9PBTjA1Ies0NlzKC/FcSWoWo0dbC+WgSoalAld Xb9iNTEUhPEagRt1FvpDiESIv85tgoxi1Y/q1g5dFu8C/6OzE5eaPhG83j/kGPCJlTpXwPKnEOz3i s8DLdxc2vwf68tyAtw6xRrv8NObsCI3lgQg35S0HMVhMx4qK5oECWUI51/Qieq18ofI0aYevCBIOA rP4M98OZfaD4MVW5nyvw==; 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 1jEyJD-0001Wc-3M; Thu, 19 Mar 2020 16:46:15 +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 1jEyJA-0001VP-21 for linux-arm-kernel@lists.infradead.org; Thu, 19 Mar 2020 16:46:13 +0000 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id B6010FB03; Thu, 19 Mar 2020 17:46:03 +0100 (CET) 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 bpzGdWj8WUbo; Thu, 19 Mar 2020 17:46:02 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 68B79412BE; Thu, 19 Mar 2020 17:46:02 +0100 (CET) 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] arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD_GPU Date: Thu, 19 Mar 2020 17:46:02 +0100 Message-Id: X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200319_094612_262217_0ED358EF X-CRM114-Status: GOOD ( 12.07 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.3 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 Tested-by: Martin Kepplinger --- 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 c47a26cf8e43..736b250bc9c2 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 @@ regulator-min-microvolt = <700000>; regulator-max-microvolt = <1300000>; regulator-always-on; - rohm,dvs-run-voltage = <1000000>; + rohm,dvs-run-voltage = <900000>; }; buck4_reg: BUCK4 {