From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carlos Hernandez Subject: Re: [PATCH 6/6] tty: serial: Add 8250-core based omap driver Date: Thu, 10 Jul 2014 12:03:29 -0400 Message-ID: <53BEB951.2040207@ti.com> References: <1404928177-26554-1-git-send-email-bigeasy@linutronix.de> <1404928177-26554-7-git-send-email-bigeasy@linutronix.de> <20140710070948.GH28884@atomide.com> <53BEB5AF.7010604@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from bear.ext.ti.com ([192.94.94.41]:35013 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751882AbaGJQEB (ORCPT ); Thu, 10 Jul 2014 12:04:01 -0400 In-Reply-To: <53BEB5AF.7010604@linutronix.de> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Sebastian Andrzej Siewior Cc: Tony Lindgren , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Felipe Balbi , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org On 07/10/2014 11:47 AM, Sebastian Andrzej Siewior wrote: > That core_pwrdm shows only up on dra7. However with both drivers (mine > and the current omap serial) the UART went down after three secs (as > expected) and didn't accept any characters while writing on the > console. If I wrote something on it via network (like echo a > > /dev/ttyO0) it came back and was working as long as I kept it busy. The > thing is that RX does not wake it up. Any idea? To wakeup from UART you need: 1) Append no_console_suspend to bootargs 2) echo enabled > /sys/devices/ocp.3/4806a000.serial/tty/ttyO0/power/wakeup