From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: Re: [PATCH V2] ARM: dts: imx6q-logicpd: Shutdown LCD regulator during suspend Date: Thu, 11 Apr 2019 13:47:25 +0800 Message-ID: <20190411054724.GU26817@dragon> References: <20190402192547.4538-1-aford173@gmail.com> <20190402192547.4538-2-aford173@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190402192547.4538-2-aford173@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Adam Ford Cc: linux-arm-kernel@lists.infradead.org, adam.ford@logicpd.com, Rob Herring , Mark Rutland , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org On Tue, Apr 02, 2019 at 02:25:46PM -0500, Adam Ford wrote: > The LCD power sequencer is very finicky. The backlight cannot > be driven until after the sequencer is done. Until now, the > regulators were marked with 'regulator-always-on' to make sure > it came up before the backlight. This patch allows the LCD > regulators to power down and prevent the backlight from being > used again until the sequencer is ready. This reduces > standby power consumption by ~100mW. > > Signed-off-by: Adam Ford Applied, thanks.