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 8A827C433F5 for ; Tue, 5 Oct 2021 07:27:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E6D461186 for ; Tue, 5 Oct 2021 07:27:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232399AbhJEH3V (ORCPT ); Tue, 5 Oct 2021 03:29:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:59266 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232108AbhJEH3U (ORCPT ); Tue, 5 Oct 2021 03:29:20 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 75C40610E6; Tue, 5 Oct 2021 07:27:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1633418850; bh=Dtz3i1SFKI5GY8VCxINDdZpDjS8RSAbKBaCuSTV/w+s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Dz9QQX6lZm+Mhi3j3D0tA42c7f6CEg9u71g1TixOT+kjVhBq/HTMKZfcpkd6pPH91 EbaB8fNhSuqR7U78T39bAcieHTwB4iRwHyzT7vkbTZiP8tB/okhQXwwLeVbV+cJ68F 1xNXrYH83x/WoYSihwW0/VsTqKpbtoeVfwUjlqtpjBeBSrJ9PHpyipH4cJ7KxQtCbk ZlCdZ4Dv+uNKXjNvD5ldjqfe1OY0rRcRpFC6zESdklh2T2AyHtRF6VrvGmHXitI9Y3 lyjUeyzKFrynfIq+1hMV69qVaYdgS8ll32BGFK+3SdI0J5EuZJRnJqZEc3jX58g/Mi 5r8o/uG3ALXpg== Date: Tue, 5 Oct 2021 15:27:24 +0800 From: Shawn Guo To: Frieder Schrempf Cc: devicetree@vger.kernel.org, Frieder Schrempf , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Sascha Hauer , Heiko Thiery , stable@vger.kernel.org, Fabio Estevam , NXP Linux Team , Pengutronix Kernel Team Subject: Re: [PATCH 8/8] arm64: dts: imx8mm-kontron: Leave reg_vdd_arm always powered on Message-ID: <20211005072723.GE20743@dragon> References: <20210930155633.2745201-1-frieder@fris.de> <20210930155633.2745201-9-frieder@fris.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210930155633.2745201-9-frieder@fris.de> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, Sep 30, 2021 at 05:56:31PM +0200, Frieder Schrempf wrote: > From: Frieder Schrempf > > When the cpufreq driver is enabled, the buck2 regulator is kept powered on > by the dependency between the CPU nodes with 'cpu-supply' set. Without the > cpufreq driver the kernel will power off the regulator as it doesn't see > any users. This is obviously not what we want, therefore keep the regulator > powered on in any case. > > Reported-by: Heiko Thiery > Fixes: 21c4f45b335f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards") > Cc: stable@vger.kernel.org > Signed-off-by: Frieder Schrempf Already picked up the one from Heiko. https://lore.kernel.org/all/20210915120325.20248-1-heiko.thiery@gmail.com/ Shawn > --- > arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 + > 1 file changed, 1 insertion(+) > > 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 213014f59b46..c3418d263eb4 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi > @@ -105,6 +105,7 @@ reg_vdd_arm: BUCK2 { > regulator-min-microvolt = <850000>; > regulator-max-microvolt = <950000>; > regulator-boot-on; > + regulator-always-on; > regulator-ramp-delay = <3125>; > nxp,dvs-run-voltage = <950000>; > nxp,dvs-standby-voltage = <850000>; > -- > 2.33.0 >