From mboxrd@z Thu Jan 1 00:00:00 1970 From: armdev Subject: Re: Enabling uart 3 in arndale Date: Sun, 16 Mar 2014 14:52:32 +0530 Message-ID: <3F6EEB85-AEDB-4924-8324-E5FBAF525FA5@gmail.com> References: <0259D8EA-B62C-4D07-8661-ED2CF6E53779@gmail.com> Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8BIT Return-path: Received: from mail-pb0-f54.google.com ([209.85.160.54]:50728 "EHLO mail-pb0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751080AbaCPJWh convert rfc822-to-8bit (ORCPT ); Sun, 16 Mar 2014 05:22:37 -0400 Received: by mail-pb0-f54.google.com with SMTP id ma3so4427323pbc.41 for ; Sun, 16 Mar 2014 02:22:37 -0700 (PDT) In-Reply-To: <0259D8EA-B62C-4D07-8661-ED2CF6E53779@gmail.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Tushar Behera , linux-samsung-soc , u-boot@lists.denx.de Please can someone help On 14-Mar-2014, at 1:34 pm, armdev wrote: > Hi, > > We are trying to enable the UART3 on COM18 pins of arndale board. The UART3 RXD and TXD are on pins 2 and 4 which as per the base board specification is connected as > > XuRXD3 : UART_3_RXD/GPA1[4] : 2 > XuTXD3 : UART_3_TXD/GPA1[5] : 4 > > As per the public reference manual of exynos 5250, there is a register GPACON (0x1140_0000) > Setting GPACON |= 0x0010_0000 should enable the pins, but I am not able to see any output on UART3. > > Can you please suggest what is the right procedure > > -Regards > armdev team @FTM