From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752106AbcFKOE1 (ORCPT ); Sat, 11 Jun 2016 10:04:27 -0400 Received: from mail.kernel.org ([198.145.29.136]:42406 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750995AbcFKOE0 (ORCPT ); Sat, 11 Jun 2016 10:04:26 -0400 Date: Sat, 11 Jun 2016 22:03:41 +0800 From: Shawn Guo To: Bhuvanchandra DV Cc: gregkh@linuxfoundation.org, linux-serial@vger.kernel.org, mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, stefan@agner.ch, kernel@pengutronix.de, jslaby@suse.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/8] tty: serial: fsl_lpuart: support suspend/resume Message-ID: <20160611140341.GT20243@tiger> References: <20160609151039.20817-1-bhuvanchandra.dv@toradex.com> <20160609151039.20817-3-bhuvanchandra.dv@toradex.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160609151039.20817-3-bhuvanchandra.dv@toradex.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 09, 2016 at 08:40:33PM +0530, Bhuvanchandra DV wrote: > From: Stefan Agner > > In order to allow wake support in STOP sleep mode, clocks are > needed. Use imx_clk_gate2_cgr to disable automatic clock gating > in low power mode STOP. This allows to enable wake by UART using: > echo enabled > /sys/class/tty/ttyLP0/power/wakeup > > However, if wake is not enabled, the driver should disable the > clocks explicitly to save power. > > Signed-off-by: Stefan Agner > --- > drivers/clk/imx/clk-vf610.c | 12 ++++++------ Please send clock driver changes in a separate patch. Shawn > drivers/tty/serial/fsl_lpuart.c | 16 ++++++++++++++-- > 2 files changed, 20 insertions(+), 8 deletions(-)