Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751340AbbFYEiv (ORCPT ); Thu, 25 Jun 2015 00:38:51 -0400 Received: from muru.com ([72.249.23.125]:59601 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750953AbbFYEin (ORCPT ); Thu, 25 Jun 2015 00:38:43 -0400 Date: Wed, 24 Jun 2015 21:38:39 -0700 From: Tony Lindgren To: Vaibhav Hiremath Cc: Linus Walleij , lee.jones@linaro.org, sameo@linux.intel.com, linux-gpio@vger.kernel.org, "linux-arm-kernel@lists.infradead.org" , linux-kernel@vger.kernel.org Subject: Re: Use of pinctrl-single for external device over I2C Message-ID: <20150625043838.GK4156@atomide.com> References: <55893B2C.1070800@linaro.org> <558A9CC7.6070409@linaro.org> <20150624133349.GI4156@atomide.com> <558AE478.2080802@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <558AE478.2080802@linaro.org> 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 Content-Length: 734 Lines: 23 * Vaibhav Hiremath [150624 10:12]: > > I do not like this, as this is not HW feature, so DT may not be right > approach. > > So I will dig more from either runtime or Compile time option to use > regmap_ Vs raw read/writes. Can't you just check if the pinctrl node has compatible = "syscon" property? A compile time option won't work for sure. I don't know what you would check at runtime as you do not know what the bus is behind syscon. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/