From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752606AbaKJUkJ (ORCPT ); Mon, 10 Nov 2014 15:40:09 -0500 Received: from mho-03-ewr.mailhop.org ([204.13.248.66]:59504 "EHLO mho-01-ewr.mailhop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751460AbaKJUkG (ORCPT ); Mon, 10 Nov 2014 15:40:06 -0500 X-Mail-Handler: Dyn Standard SMTP by Dyn X-Originating-IP: 104.193.169.186 X-Report-Abuse-To: abuse@dyndns.com (see http://www.dyndns.com/services/sendlabs/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX19fThO4eg67AJXh0S/W9qrn Date: Mon, 10 Nov 2014 12:39:23 -0800 From: Tony Lindgren To: Roger Quadros Cc: Nishanth Menon , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org Subject: Re: [PATCH] ARM: dts: dra7-evm: Keep all VDD rails always-on Message-ID: <20141110203922.GX31454@atomide.com> References: <1413902290-304-1-git-send-email-nm@ti.com> <54579476.10702@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54579476.10702@ti.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Roger Quadros [141103 06:44]: > Hi Nishant, > > On 10/21/2014 05:38 PM, Nishanth Menon wrote: > > DRA7 Data Manual (SPRS857L - August 2014) section 4.1.1 states: "All > > unused power supply balls must be supplied with the voltages specified > > in the Section 5.2, Recommended Operating Conditions". > > > > This implies that all unused voltage rails for Vayu can never be > > switched off even if the hardware blocks inside that voltage domain is > > unused. Switching off these unused rails may result in stability issues > > on other domains and increased leakage and power-on-hour impacts. > > > > J6eco-evm dts file already considers this, however j6evm-dts file needs > > to be fixed to consider this constraint of the SoC. > > > > Signed-off-by: Nishanth Menon > > Acked-by: Roger Quadros > > I'm assuming that vddshv8 (MMC1 power group) can be switched off. Applying into omap-for-v3.19/dt thanks. Tony