From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933218AbaHEKMs (ORCPT ); Tue, 5 Aug 2014 06:12:48 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:51613 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933193AbaHEKMp (ORCPT ); Tue, 5 Aug 2014 06:12:45 -0400 From: Roger Quadros To: , CC: , , , , , , , , , Roger Quadros Subject: [PATCH 3/3] ARM: dts: omap3430-sdp: Revert to using software ECC for NAND Date: Tue, 5 Aug 2014 13:11:22 +0300 Message-ID: <1407233482-11642-4-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1407233482-11642-1-git-send-email-rogerq@ti.com> References: <1407233482-11642-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For v3.14 and prior, 1-bit Hamming code ECC via software was used for NAND on this board. Commit c06c52701695 in v3.15 changed the behaviour to use 1-bit Hamming code via Hardware using a different ECC layout i.e. (ROM code layout) than what is used by software ECC. This ECC layout change causes NAND filesystems created in v3.14 and prior to be unusable in v3.15 and later. So revert back to using software ECC scheme. Signed-off-by: Roger Quadros --- arch/arm/boot/dts/omap3430-sdp.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts index 02f69f4..9bad94e 100644 --- a/arch/arm/boot/dts/omap3430-sdp.dts +++ b/arch/arm/boot/dts/omap3430-sdp.dts @@ -107,7 +107,7 @@ #address-cells = <1>; #size-cells = <1>; reg = <1 0 0x08000000>; - ti,nand-ecc-opt = "ham1"; + ti,nand-ecc-opt = "sw"; nand-bus-width = <8>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <36>; -- 1.8.3.2