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: 332590 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 517712C00A8 for ; Fri, 21 Mar 2014 22:36:41 +1100 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQxk9-00029J-N6; Fri, 21 Mar 2014 11:36:10 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQxjz-0001Up-Hf; Fri, 21 Mar 2014 11:35:59 +0000 Received: from top.free-electrons.com ([176.31.233.9] helo=mail.free-electrons.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQxjm-0001Ra-QS for linux-mtd@lists.infradead.org; Fri, 21 Mar 2014 11:35:48 +0000 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140321_073547_012290_D9ED7102 X-CRM114-Status: UNSURE ( 8.16 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.2 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Lior Amsalem , Thomas Petazzoni , Tawfik Bayouk , Seif Mazareeb , Simon Guinot , Ezequiel Garcia , Gregory Clement , Willy Tarreau X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.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: