From patchwork Fri Mar 21 11:34:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 332587 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 76EB02C00A8 for ; Fri, 21 Mar 2014 22:35:32 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965341AbaCULfc (ORCPT ); Fri, 21 Mar 2014 07:35:32 -0400 Received: from top.free-electrons.com ([176.31.233.9]:55747 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965328AbaCULfb (ORCPT ); Fri, 21 Mar 2014 07:35:31 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 790A5B37; Fri, 21 Mar 2014 12:35:36 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT shortcircuit=ham autolearn=disabled version=3.3.2 Received: from localhost.localdomain (unknown [190.2.108.71]) by mail.free-electrons.com (Postfix) with ESMTPSA id EB4887A6; Fri, 21 Mar 2014 12:35:32 +0100 (CET) From: Ezequiel Garcia To: , , Brian Norris Cc: Simon Guinot , Willy Tarreau , Tawfik Bayouk , Lior Amsalem , Thomas Petazzoni , Gregory Clement , Seif Mazareeb , Ezequiel Garcia Subject: [PATCH v2 4/4] mtd: nand: pxa3xx: Add supported ECC strength and step size to the DT binding Date: Fri, 21 Mar 2014 08:34:50 -0300 Message-Id: <1395401690-25221-5-git-send-email-ezequiel.garcia@free-electrons.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1395401690-25221-1-git-send-email-ezequiel.garcia@free-electrons.com> References: <1395401690-25221-1-git-send-email-ezequiel.garcia@free-electrons.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This commit updates the devicetree binding documentation for this driver with the supported ECC strength and step size combinations. Signed-off-by: Ezequiel Garcia --- Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt index 86e0a56..650c0dc 100644 --- a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt +++ b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt @@ -17,6 +17,14 @@ Optional properties: - num-cs: Number of chipselect lines to usw - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false + - nand-ecc-strength: number of bits to correct per ECC step + - nand-ecc-step-size: number of data bytes covered by a single ECC step + +The following ECC strength and step size are currently supported: + + - nand-ecc-strength = <1>, nand-ecc-step-size = <512> (aka Hamming) + - nand-ecc-strength = <16>, nand-ecc-step-size = <2048> (aka BCH-4) + - nand-ecc-strength = <16>, nand-ecc-step-size = <1024> (aka BCH-8) Example: