From patchwork Wed Apr 11 03:41:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: xiaolei li X-Patchwork-Id: 897020 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=mediatek.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hrYzj+VK"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40LVLZ2tr5z9s1p for ; Wed, 11 Apr 2018 13:45:42 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wtAyTzcKklTbp2G7DYyxGLI9tw5oQHXV+6RtN24tVAA=; b=hrYzj+VKudNXD+ HUqJDVFemK+rO7C6SZAuUfTbsvWjDHfVu2eF0u3ir/0XkKKQVUXpXCBAQQH5QrYdnsxDSVR3UyEbY gifOdJtsGIpro3UEBG0cX/ULjcaXnS9EXztJRnon64OeeDgk7cO44gyq/7TeZrGhFmhYjfz3gTYrO F3TIcq6zC19ss2vz0ryUK6bBsWTlx3s11JThniG1DI61PQzguXIz8k8mBFxVeGMsemDEPEjHQJPb7 897bkwWuirAKBT/W5Wv8hoPsiffuapDPHcqqbkBNZCn7CcbHPFFDhY/PqyvLDOd27CgdMeXX5/oB/ gS5OlrRNwHz7LnOArjaA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f66hS-0004kM-7p; Wed, 11 Apr 2018 03:45:34 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f66eT-0001um-SF; Wed, 11 Apr 2018 03:42:33 +0000 X-UUID: c622300220ab45a9be674b58944b02cc-20180411 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 160252202; Wed, 11 Apr 2018 11:42:11 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Wed, 11 Apr 2018 11:42:09 +0800 Received: from mtkslt306.mediatek.inc (10.21.14.136) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Wed, 11 Apr 2018 11:42:09 +0800 From: Xiaolei Li To: , Subject: [PATCH 1/8] dt-bindings: mtd: mtk-nand: Update properties description Date: Wed, 11 Apr 2018 11:41:51 +0800 Message-ID: <1523418118-57686-2-git-send-email-xiaolei.li@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1523418118-57686-1-git-send-email-xiaolei.li@mediatek.com> References: <1523418118-57686-1-git-send-email-xiaolei.li@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180410_204230_046427_4AAACA9D X-CRM114-Status: GOOD ( 11.04 ) X-Spam-Score: 1.3 (+) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (1.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mediatek@lists.infradead.org, xiaolei.li@mediatek.com, linux-mtd@lists.infradead.org, srv_heupstream@mediatek.com Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Update ecc step size, ecc strength, and parity bits supported on each MTK NAND controller. Signed-off-by: Xiaolei Li --- Documentation/devicetree/bindings/mtd/mtk-nand.txt | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/mtd/mtk-nand.txt b/Documentation/devicetree/bindings/mtd/mtk-nand.txt index 1c88526..ef786568 100644 --- a/Documentation/devicetree/bindings/mtd/mtk-nand.txt +++ b/Documentation/devicetree/bindings/mtd/mtk-nand.txt @@ -50,14 +50,19 @@ Optional: - nand-on-flash-bbt: Store BBT on NAND Flash. - nand-ecc-mode: the NAND ecc mode (check driver for supported modes) - nand-ecc-step-size: Number of data bytes covered by a single ECC step. - valid values: 512 and 1024. + valid values: + 512 and 1024 on mt2701 and mt2712. + 512 only on mt7622. 1024 is recommended for large page NANDs. - nand-ecc-strength: Number of bits to correct per ECC step. - The valid values that the controller supports are: 4, 6, - 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, 32, 36, 40, 44, - 48, 52, 56, 60. + The valid values that each controller supports: + mt2701: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, + 32, 36, 40, 44, 48, 52, 56, 60. + mt2712: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, + 32, 36, 40, 44, 48, 52, 56, 60, 68, 72, 80. + mt7622: 4, 6, 8, 10, 12, 14, 16. The strength should be calculated as follows: - E = (S - F) * 8 / 14 + E = (S - F) * 8 / B S = O / (P / Q) E : nand-ecc-strength. S : spare size per sector. @@ -66,6 +71,9 @@ Optional: O : oob size. P : page size. Q : nand-ecc-step-size. + B : parity bits to do 1 bit ECC. + Be 14 on mt2701 and mt2712. + Be 13 on mt7622. If the result does not match any one of the listed choices above, please select the smaller valid value from the list.