From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: Re: [PATCH] ARM: dts: imx7d-sdb: Make SW2's voltage fixed Date: Wed, 5 Jun 2019 17:17:01 +0800 Message-ID: <20190605091659.GM29853@dragon> References: <20190529065056.27516-1-Anson.Huang@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190529065056.27516-1-Anson.Huang@nxp.com> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: devicetree@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.