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 B0472C433EF for ; Fri, 15 Oct 2021 04:06:13 +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 69BCC610D2 for ; Fri, 15 Oct 2021 04:06:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 69BCC610D2 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=tmdasNVY9PoDvo8C6IF5G5nl0NuOklkwh9+gPRvsxyg=; b=3s8StUq83eSKnf aKDxS6BAM+e77EZ9o1gi+v1Vd+wMc0T8vGMPtfPJNyANhBgHncJJ+wFIDTmfoeKeNC/9oUUODdOrp +yNFQRcUk1i2me66sIy2h6/OAHe5TmtqQVudqyhMG80zGOKPobwxTpvk38n0BumLfk3CTMjcfCINg znKaIReNKXelAXpPlul6O8cTayRNUculPsBR8YTTBHQJgq8KwKnCaIKf8v3MHhjzv1QEISYkRJVag WYlHODBqyjFtU14/Yj7ZRCXZyYjzgPOPbL+GSjocJZpoAuIOEpbAWJxglLSvD6aJUNE4+u/csYsA8 jQ+1Ec5wL47mycAeIfqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbESr-005N6P-BH; Fri, 15 Oct 2021 04:05:01 +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 1mbESo-005N5t-0K for linux-arm-kernel@lists.infradead.org; Fri, 15 Oct 2021 04:04:59 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4EA2C610D2; Fri, 15 Oct 2021 04:04:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634270697; bh=T1Z9HbQrrY18qJUzBqQ0IoiV6ybSBk9q37LkdOEVAus=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MXzvhER6Kr2mM3DpPB54nBFaCzil9UDbBHRkB2kejrtxoDqfZxIbk+i0+Vjzc4h8e D5k6bztnfatkzJj9nV1DM/47/upMR8iTcsQz6lPYsCk7lB0U0eN6KBi663xVlvHjq+ bhWeF08FTuLMA2efmaW7VYW5Pc+WR/BQePS8wdheBukiF7c9upNQFRioRAyxTAOBFO RDuGG0e6EDLZKCgZivKh2F9Ac8Cs2unKc9laSl0TQskNbnTvCd4MAqaBEi2Rdb7ZC+ pHui5UaBDwGJ1jBcscWKXpHuDMZwcR9kX8sX8SBN5V9KzDbtPclkJFEoM2FdN2IUvS ++29VBV8lDI0g== Date: Fri, 15 Oct 2021 12:04:51 +0800 From: Shawn Guo To: Frieder Schrempf Cc: Frieder Schrempf , devicetree@vger.kernel.org, Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , stable@vger.kernel.org, Fabio Estevam , NXP Linux Team , Pengutronix Kernel Team Subject: Re: [PATCH 3/8] arm64: dts: imx8mm-kontron: Set VDD_SNVS to 800 mV Message-ID: <20211015040450.GF22881@dragon> References: <20210930155633.2745201-1-frieder@fris.de> <20210930155633.2745201-4-frieder@fris.de> <20211005065641.GA20743@dragon> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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-20211014_210458_094999_606FDDF2 X-CRM114-Status: GOOD ( 20.19 ) 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 Tue, Oct 05, 2021 at 03:14:40PM +0200, Frieder Schrempf wrote: > On 05.10.21 08:56, Shawn Guo wrote: > > On Thu, Sep 30, 2021 at 05:56:26PM +0200, Frieder Schrempf wrote: > >> From: Frieder Schrempf > >> > >> According to the datasheet VDD_SNVS should be 800 mV, so let's > >> make sure that the voltage won't be different. > > > > Could you share the datasheet? > > Sure, it's here: https://www.nxp.com/docs/en/data-sheet/IMX8MMIEC.pdf. > See table 10 for the operating voltages. Thanks for the link! But datasheet specifies a voltage range. 800 mV is just the typical one. The only problem I see is that regulator-min-microvolt should be lowered to 800 mV. regulator-max-microvolt looks correct to me. Shawn > > >> > >> Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") > >> Cc: stable@vger.kernel.org > >> Signed-off-by: Frieder Schrempf > >> --- > >> arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 4 ++-- > >> 1 file changed, 2 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 b12fb7ce6686..213014f59b46 100644 > >> --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > >> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > >> @@ -152,8 +152,8 @@ reg_nvcc_snvs: LDO1 { > >> > >> reg_vdd_snvs: LDO2 { > >> regulator-name = "ldo2"; > >> - regulator-min-microvolt = <850000>; > >> - regulator-max-microvolt = <900000>; > >> + regulator-min-microvolt = <800000>; > >> + regulator-max-microvolt = <800000>; > >> 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