From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755100AbaEOUWr (ORCPT ); Thu, 15 May 2014 16:22:47 -0400 Received: from mail-ve0-f174.google.com ([209.85.128.174]:52976 "EHLO mail-ve0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752715AbaEOUWo (ORCPT ); Thu, 15 May 2014 16:22:44 -0400 MIME-Version: 1.0 In-Reply-To: <5375148E.6040905@wwwdotorg.org> References: <1400113986-339-1-git-send-email-abrestic@chromium.org> <1400113986-339-9-git-send-email-abrestic@chromium.org> <5375148E.6040905@wwwdotorg.org> Date: Thu, 15 May 2014 13:22:43 -0700 X-Google-Sender-Auth: IEmypcZ48cM9-Znr3EpfzfHPWFo Message-ID: Subject: Re: [RFC PATCH 08/10] ARM: tegra124: Bind CAR to syscon device From: Andrew Bresticker To: Stephen Warren Cc: "linux-tegra@vger.kernel.org" , devicetree@vger.kernel.org, "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , linux-usb@vger.kernel.org, Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Thierry Reding , Russell King , Peter De Schrijver , Prashant Gaikwad , Mike Turquette , Kishon Vijay Abraham I , Greg Kroah-Hartman , Mathias Nyman , Grant Likely , Randy Dunlap Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 15, 2014 at 12:25 PM, Stephen Warren wrote: > On 05/14/2014 06:33 PM, Andrew Bresticker wrote: >> The XUSB PHY driver will be accessing the CAR registers through the >> syscon interface. > > I very strongly don't want to use the syscon concept on Tegra. Instead, > I want only the CAR driver touching the CAR registers. If other drivers > need some CAR registers manipulated, that should happen by that other > driver calling some explicit semantic API in the CAR driver to do so. > Take a look at how the Tegra SMMU and Tegra AHB driver communicate for > an example. Understood. I'll fix that up for the next spin.