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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32862C4332F for ; Tue, 5 Oct 2021 06:55:42 +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 F076E613AC for ; Tue, 5 Oct 2021 06:55:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F076E613AC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Uhf07d25nWoDYJR6PHYRiMdBmlHrgmKGuBDjt/FZ3IQ=; b=g6sUVz0Ydr4jAB EqXJMIyftQD0YGPnmvdnG8uqePd0uX/jDZaBkA1QflOLqxdNgzXUL6GV76D702ynWWVeXst+T+1WL oTweC3djlnLFTxgY+s6qKIUttPDRE2LbISx16zsNH3UlfE2kNFSg7E1c+RDH0ryYyV6eFphz0QSyl 8UDJG1Ro+6CRCRGecWPOLP5h2kQznqtsV62QU/cIsDdFO+0NVbxFt5/J+Uj0+uB1AkLBcHAqhQk57 MrtlTU68XBfdHsYnW+BhgbnZB2MxVWLdQ+c+AENNlUfl7Hk7/gV0KeeSSlyymceF6anrnTcmlhNwO atPKiARxvOfbzuSDC48g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mXeL4-009D9H-Mi; Tue, 05 Oct 2021 06:54:10 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mXeKz-009D86-Gn for linux-arm-kernel@lists.infradead.org; Tue, 05 Oct 2021 06:54:06 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3180E6138F; Tue, 5 Oct 2021 06:54:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1633416845; bh=b7QzjFO7hZD8ywQA6H3ZkbswlXTN6z1Bpr2GKwUdVzU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=j23HgdkHVmGIY0nYmkth4nMgVrSa3DVFN2Dv/+lXDkBtmVhrcDVWO9UlGh9lkAjx2 AvP1BzSAS6zxqU5BnGSlSPJiXf/hrtoYwj5yfvIZ6N5R2QmL1jfzvLEpshoXm9Z+DH Tz5OhuCkE8QhreB3rdKAgNMVJhs8x8NO+tCdfAyQLcjQFFVeP+aMYEXHD1Ix5SQBh8 JdWbJ6C40ejjsii+HPs6JRXVv7KDzuHDH9ztFE7wnwycq0PsRCbX2Wu/yaq5XEBWbW 388Wxw3PBJFU0oG67yVygy39pZDiWn/QU5AKsxRJbKotvTAFG2RvH3zzPlPn9YTYj/ MvdEL9jmK2z4Q== Date: Tue, 5 Oct 2021 14:53:59 +0800 From: Shawn Guo To: Frieder Schrempf Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , Frieder Schrempf , Fabio Estevam , Krzysztof Kozlowski , NXP Linux Team , Pengutronix Kernel Team Subject: Re: [PATCH 2/8] arm64: dts: imx8mm-kontron: Make sure SOC and DRAM supply voltages are correct Message-ID: <20211005065358.GZ20743@dragon> References: <20210930155633.2745201-1-frieder@fris.de> <20210930155633.2745201-3-frieder@fris.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210930155633.2745201-3-frieder@fris.de> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211004_235405_598432_DAAFA4FF X-CRM114-Status: GOOD ( 16.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Sep 30, 2021 at 05:56:25PM +0200, Frieder Schrempf wrote: > From: Frieder Schrempf > > VDD_SOC should be 800 mV in suspend and 850 mV in run mode. VDD_DRAM > should be 950 mV for DDR clock frequencies of 1.5 GHz. > > This information is taken from the datasheet and the uboot-imx code. I'm wondering where the existing settings were coming from? Shawn > > Signed-off-by: Frieder Schrempf > --- > arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > index 03b3516abd64..b12fb7ce6686 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > @@ -92,10 +92,12 @@ regulators { > reg_vdd_soc: BUCK1 { > regulator-name = "buck1"; > regulator-min-microvolt = <800000>; > - regulator-max-microvolt = <900000>; > + regulator-max-microvolt = <850000>; > regulator-boot-on; > regulator-always-on; > regulator-ramp-delay = <3125>; > + nxp,dvs-run-voltage = <850000>; > + nxp,dvs-standby-voltage = <800000>; > }; > > reg_vdd_arm: BUCK2 { > @@ -111,7 +113,7 @@ reg_vdd_arm: BUCK2 { > reg_vdd_dram: BUCK3 { > regulator-name = "buck3"; > regulator-min-microvolt = <850000>; > - regulator-max-microvolt = <900000>; > + regulator-max-microvolt = <950000>; > regulator-boot-on; > regulator-always-on; > }; > -- > 2.33.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel