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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CBE9C282DE for ; Wed, 5 Jun 2019 09:17:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5929E20870 for ; Wed, 5 Jun 2019 09:17:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559726239; bh=cYxElpW0Vlv3r+RPbOHmetHZB85NQhgPvZ9XJjQHp8g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=u090RlC7ETBcX+gk1ShlukHiDJVLwC5ZMB4j2Vfcrv7l8aoeTEkIk8FLTXQGlNxy0 qLNWuBclFYOJJoLTTGSg3pDSSdR1nFlLTK6Ns8V4SrXndjiAvEnfqgdbQw3L9VMlp5 zsnxefFJyqgIpZurFbwNqOUWD8KrrNZUlQB2ezT0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727025AbfFEJRS (ORCPT ); Wed, 5 Jun 2019 05:17:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:37934 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726502AbfFEJRS (ORCPT ); Wed, 5 Jun 2019 05:17:18 -0400 Received: from dragon (li1264-180.members.linode.com [45.79.165.180]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 778E32075B; Wed, 5 Jun 2019 09:17:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559726237; bh=cYxElpW0Vlv3r+RPbOHmetHZB85NQhgPvZ9XJjQHp8g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=q+Tom2tpYqySAyxKs/a5k8md0Kdcvyol+5i29ZMARg92tJkM3PfeCqA+tsVG0skgo co5GY8aqSapFhci0wSKc4JAY/mHnqiHy2bgmxvyK1DNQDMtbe72W3QLD8x/r21/OI7 RZSVzUzgWfJMcNEkxHfoQB+TjMZNSZyB9zAHu05c= Date: Wed, 5 Jun 2019 17:17:01 +0800 From: Shawn Guo To: Anson.Huang@nxp.com Cc: robh+dt@kernel.org, mark.rutland@arm.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Linux-imx@nxp.com Subject: Re: [PATCH] ARM: dts: imx7d-sdb: Make SW2's voltage fixed Message-ID: <20190605091659.GM29853@dragon> References: <20190529065056.27516-1-Anson.Huang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190529065056.27516-1-Anson.Huang@nxp.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 29, 2019 at 02:50:56PM +0800, Anson.Huang@nxp.com wrote: > From: Anson Huang > > On i.MX7D SDB board, SW2 supplies a lot of peripheral devices, > its voltage should be fixed at 1.8V. The commit 43967d9b5a7c > ("ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs") > assigns SW2 as the supplier of vdd1p0d, and when its comsumers > pcie-phy/mipi-phy try to set the vdd1p0d to 1.0V, regulator core > will also set SW2 to its best(min) voltage to 1.5V, and it will > lead to board reset. > > This patch makes SW2's voltage fixed at 1.8V to avoid this issue. > > Fixes: 43967d9b5a7c ("ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs") > Reported-by: Leonard Crestez > Signed-off-by: Anson Huang Applied, thanks.