From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751906AbdGMJv0 (ORCPT ); Thu, 13 Jul 2017 05:51:26 -0400 Received: from mail-pg0-f47.google.com ([74.125.83.47]:34667 "EHLO mail-pg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbdGMJvZ (ORCPT ); Thu, 13 Jul 2017 05:51:25 -0400 Date: Thu, 13 Jul 2017 15:21:21 +0530 From: Viresh Kumar To: Chen-Yu Tsai Cc: Rob Herring , Mark Rutland , "devicetree@vger.kernel.org" , Vincent Guittot , Greg Kroah-Hartman , Stephen Boyd , "linux-kernel@vger.kernel.org" , Mark Brown , Rajendra Nayak , Shiraz Hashim , "linux-arm-kernel@lists.infradead.org" Subject: Re: [RFC v2 5/6] drivers: boot_constraint: Add initial DT bindings Message-ID: <20170713095121.GH352@vireshk-i7> References: <0610277aef9830cff53b7b53cf41cc54886fdc7f.1499770771.git.viresh.kumar@linaro.org> <20170713050934.GB352@vireshk-i7> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 13-07-17, 17:46, Chen-Yu Tsai wrote: > This makes more sense. The LCD being able to do DVFS was missing from the last > discussion. I assume this is for power saving purposes? Yeah. > Otherwise one could just > say you should not use the lower part of the voltage range. And DVFS is for the > controller's core logic and not I/O? Yeah. But for many such cases in different platforms, the LCD controller may not do DVFS. But we still need to make sure its clk, regulator and power domain are enabled until the time the driver comes up. This series would also help in doing proxy-voting for all such resources, so that they don't get disabled while being used. -- viresh