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[209.132.180.67]) by mx.google.com with ESMTP id 134-v6si3203120pgc.116.2018.06.27.02.23.50; Wed, 27 Jun 2018 02:24:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@bgdev-pl.20150623.gappssmtp.com header.s=20150623 header.b=v82XmUHb; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933292AbeF0ITn (ORCPT + 99 others); Wed, 27 Jun 2018 04:19:43 -0400 Received: from mail-it0-f65.google.com ([209.85.214.65]:55351 "EHLO mail-it0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753306AbeF0ITk (ORCPT ); Wed, 27 Jun 2018 04:19:40 -0400 Received: by mail-it0-f65.google.com with SMTP id 16-v6so6245116itl.5 for ; Wed, 27 Jun 2018 01:19:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=4boI7Ni3ds2Y4BntI2WQmSunS/rtQo59JQW4ZED6v8I=; b=v82XmUHbv5umW6XQ3V8lSLdkFW82OOwocAVyEVhd6+z+BcLuMyIlF83a1de4Uji0eS xrxySWS41ttN8U1x16fI5gr++3j4POKxpBDuJnmoYCKd8g+miBTFpow/pULPXMc8lPBK Qn8OxUrkvC7On8yDHQ402twTQZn76bXW3e98NzEd3Ef65LY6PxQeL7OaYnOHX07JyISc 2xr5ai97OgEeCT7iFGp7umfg3Xnd2ptFipTBYa0RBcYXkT3ac+Jnf6PQPr44RYBuJYO3 SsRL3nGxKfho/Rf8o4dF6qZOs0/puFug56mP2juIbkrbF5fEp/TgI7i8+dabzfRUJRcj QJjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=4boI7Ni3ds2Y4BntI2WQmSunS/rtQo59JQW4ZED6v8I=; b=i0Za4B/9wMMPtwd1Qom0+HDPd0cBiXBpAWw7L4NwTCgc5CLAuJpwJm883M21jgoLtg Yd8PpZqlRg7tc67oSIE8xvuhKQq8IfGKxLvXUoonP2dE9QrFuXCnUtTGnD9YUML6g8at Lm4zaw1ugsbSYUXw7ONicgo2r2nVy2ZAwOZTZzG5sHoCDJf2SLOGsU+B+0SLTm/wshdD EnyGutlbaqd9jVc/c4Fnww5tKD+w7U6+79U2Pz0ZKufoe2d1xvFSAwmZ/b2Y2KEcxVwP 69vD48Hno7OEOGI/O96pIoDhxMcPwVjbvk0yyA/sielHxCW2Gn9uqEL26iTQXf0WdkWa 7Ugw== X-Gm-Message-State: APt69E29YfrpnkcxVfss1vSg2af1+H4nQqdPC8q3Q1YddfM1ZOhBdJTl 6epZSkOigqB/qV6rUDJ1QNH6i2+joimSxCvd+O4kyw== X-Received: by 2002:a24:d80a:: with SMTP id b10-v6mr4042177itg.141.1530087579241; Wed, 27 Jun 2018 01:19:39 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a6b:9c51:0:0:0:0:0 with HTTP; Wed, 27 Jun 2018 01:19:38 -0700 (PDT) In-Reply-To: <1530078385-1546-2-git-send-email-alanx.chiang@intel.com> References: <1530078385-1546-1-git-send-email-alanx.chiang@intel.com> <1530078385-1546-2-git-send-email-alanx.chiang@intel.com> From: Bartosz Golaszewski Date: Wed, 27 Jun 2018 10:19:38 +0200 Message-ID: Subject: Re: [PATCH v3 1/2] dt-bindings: at24: Add address-width property To: alanx.chiang@intel.com Cc: linux-i2c , andy.yeh@intel.com, Sakari Ailus , Andy Shevchenko , andriy.shevchenko@intel.com, Rajmohan Mani , Andy Shevchenko , tfiga@chromium.org, jcliang@chromium.org, Rob Herring , Mark Rutland , Arnd Bergmann , Greg Kroah-Hartman , Linux Kernel Mailing List , devicetree Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2018-06-27 7:46 GMT+02:00 : > From: Alan Chiang > > The AT24 series chips use 8-bit address by default. If some > chips would like to support more than 8 bits, the at24 driver > should be added the compatible field for specfic chips. > > Provide a flexible way to determine the addressing bits through > address-width in this patch. > > Signed-off-by: Alan Chiang > Signed-off-by: Andy Yeh > > --- > since v1: > -- Remove the address-width field in the example. > since v2: > -- Remove redundant space. > > --- > Documentation/devicetree/bindings/eeprom/at24.txt | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt > index 61d833a..aededdb 100644 > --- a/Documentation/devicetree/bindings/eeprom/at24.txt > +++ b/Documentation/devicetree/bindings/eeprom/at24.txt > @@ -72,6 +72,8 @@ Optional properties: > > - wp-gpios: GPIO to which the write-protect pin of the chip is connected. > > + - address-width: number of address bits (one of 8, 16). > + > Example: > > eeprom@52 { > -- > 2.7.4 > Rob, we only have two possibilities here and the default is 8 bits. What do you think about introducing a boolean property here called: 'address-width-16' instead of an integer? Best regards, Bartosz Golaszewski