Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752182AbaA2Wjo (ORCPT ); Wed, 29 Jan 2014 17:39:44 -0500 Received: from vps1.hno.se ([31.192.227.87]:37367 "EHLO vps1.hno.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751744AbaA2Wjn (ORCPT ); Wed, 29 Jan 2014 17:39:43 -0500 Message-ID: <1391035079.14902.3.camel@localhost> Subject: Re: [linux-sunxi] Re: [RFC PATCH v2 09/14] mtd: nand: add sunxi NFC dt bindings doc From: Henrik =?ISO-8859-1?Q?Nordstr=F6m?= To: linux-sunxi@googlegroups.com Cc: Boris BREZILLON , Maxime Ripard , Rob Landley , Russell King , David Woodhouse , Grant Likely , Brian Norris , Jason Gunthorpe , Arnd Bergmann , "devicetree@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , linux-mtd@lists.infradead.org, dev@linux-sunxi.org Date: Wed, 29 Jan 2014 23:37:59 +0100 In-Reply-To: References: <1391006064-28890-1-git-send-email-b.brezillon.dev@gmail.com> <1391006064-28890-10-git-send-email-b.brezillon.dev@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.3 (3.10.3-1.fc20) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ons 2014-01-29 klockan 11:11 -0600 skrev Rob Herring: > Isn't allwinner,rb implied by a lack of rb-gpios property. Or no R/B > pin is an option? If so, don't you need some fixed time delay > properties like max erase time? > > rb-gpios could be added to the generic nand binding as well. The Allwinner NAND controller have dedicated RB pins when NAND is enabled, only MUXed with other functions when NAND is not enabled. Leaving RB unconnected is not a valid hardware configuration. The controller internal timing engine depends on being able to sense RB to sequence NAND commands properly. Regards Henrik -- 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/