From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 4A6EAE00949; Tue, 28 Apr 2015 09:03:59 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_FROM_12LTRDOM autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 T_FROM_12LTRDOM From a 12-letter domain Received: from sip2-98.nexcess.net (iwavesystems.com [207.32.180.10]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 836F5E003A8 for ; Tue, 28 Apr 2015 09:03:56 -0700 (PDT) Received: (qmail 27606 invoked by uid 108); 28 Apr 2015 12:03:55 -0400 Received: from unknown (HELO ?192.168.2.104?) (124.124.219.229) by sip2-98.nexcess.net with SMTP; 28 Apr 2015 12:03:55 -0400 Message-ID: <553FAF67.5030302@iwavesystems.com> Date: Tue, 28 Apr 2015 21:33:51 +0530 From: ansaris User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: "meta-freescale@yoctoproject.org" Subject: iMX6 - PMIC SW1AB and SW1C standby voltage setting X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Apr 2015 16:03:59 -0000 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hi, We are using imx6Q sabresd platform for our development with Linux 3.14.28_1.0.0-GA BSP. From the below board file we could see the following function "setup_pmic_voltages". ~/u-boot-imx/board/freescale/mx6sabresd/mx6sabresd.c We understood that, after detection of PMIC 1. VGEN3 and VGEN5 voltages are increased to 2.8v and 3.0v respectively. 2. The SW1AB and SW1C standby voltages are set to 0.975v. We would like to know, why the SW1AB and SW1C standby voltages are set to 0.975? and where this voltage will be used? Regards, Ansari