From patchwork Mon Jun 11 20:52:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Agner X-Patchwork-Id: 927914 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=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=agner.ch Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; secure) header.d=agner.ch header.i=@agner.ch header.b="FmtlbGj4"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 414QHP25rQz9rxs for ; Tue, 12 Jun 2018 06:54:25 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934716AbeFKUxz (ORCPT ); Mon, 11 Jun 2018 16:53:55 -0400 Received: from mail.kmu-office.ch ([178.209.48.109]:41648 "EHLO mail.kmu-office.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934530AbeFKUw3 (ORCPT ); Mon, 11 Jun 2018 16:52:29 -0400 Received: from trochilidae.lan (unknown [37.17.239.3]) by mail.kmu-office.ch (Postfix) with ESMTPSA id E36335C0E1F; Mon, 11 Jun 2018 22:52:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=agner.ch; s=dkim; t=1528750347; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=f6nxdRtIFcUNV1w2CEA4dVtOBEFFm9pReXLk7EvbSuA=; b=FmtlbGj4br7c98+Wdwopmpaj7cW9aa7H3xUsOidlDfv2+Rfir+gsMj6Kf+4BVZEdwJBeK5 DQ/+mT6NIPGFmcP6wDk4g5Q1uMiYI6bXAbnCgTUHyyEUuYRIh8wYrEOW3WnQbZXN0z/xnr gePAUHFYtmBkwdEaswAs1ZoIm012gcM= From: Stefan Agner To: boris.brezillon@bootlin.com, dwmw2@infradead.org, computersforpeace@gmail.com, marek.vasut@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com, thierry.reding@gmail.com Cc: dev@lynxeye.de, miquel.raynal@bootlin.com, richard@nod.at, marcel@ziswiler.com, krzk@kernel.org, digetx@gmail.com, benjamin.lindqvist@endian.se, jonathanh@nvidia.com, pdeschrijver@nvidia.com, pgaikwad@nvidia.com, mirza.krak@gmail.com, gaireg@gaireg.de, linux-mtd@lists.infradead.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Agner Subject: [PATCH v4 3/6] mtd: rawnand: tegra: add devicetree binding Date: Mon, 11 Jun 2018 22:52:21 +0200 Message-Id: <20180611205224.23340-4-stefan@agner.ch> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180611205224.23340-1-stefan@agner.ch> References: <20180611205224.23340-1-stefan@agner.ch> X-Spamd-Result: default: False [-2.10 / 15.00]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCPT_COUNT_TWELVE(0.00)[24]; BAYES_HAM(-3.00)[100.00%]; TAGGED_RCPT(0.00)[dt]; MIME_GOOD(-0.10)[text/plain]; FROM_HAS_DN(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_ZERO(0.00)[0]; MID_CONTAINS_FROM(1.00)[]; ASN(0.00)[asn:13030, ipnet:37.17.238.0/23, country:CH]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[] Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org This adds the devicetree binding for the Tegra 2 NAND flash controller. Signed-off-by: Lucas Stach Signed-off-by: Stefan Agner Reviewed-by: Boris Brezillon Reviewed-by: Rob Herring --- .../bindings/mtd/nvidia-tegra20-nand.txt | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt diff --git a/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt new file mode 100644 index 000000000000..1c351362f3a9 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt @@ -0,0 +1,64 @@ +NVIDIA Tegra NAND Flash controller + +Required properties: +- compatible: Must be one of: + - "nvidia,tegra20-nand" +- reg: MMIO address range +- interrupts: interrupt output of the NFC controller +- clocks: Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - nand +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following entries: + - nand + +Optional children nodes: +Individual NAND chips are children of the NAND controller node. Currently +only one NAND chip supported. + +Required children node properties: +- reg: An integer ranging from 1 to 6 representing the CS line to use. + +Optional children node properties: +- nand-ecc-mode: String, operation mode of the NAND ecc mode. Currently only + "hw" is supported. +- nand-ecc-algo: string, algorithm of NAND ECC. + Supported values with "hw" ECC mode are: "rs", "bch". +- nand-bus-width : See nand.txt +- nand-on-flash-bbt: See nand.txt +- nand-ecc-strength: integer representing the number of bits to correct + per ECC step (always 512). Supported strength using HW ECC + modes are: + - RS: 4, 6, 8 + - BCH: 4, 8, 14, 16 +- nand-ecc-maximize: See nand.txt +- nand-is-boot-medium: Makes sure only ECC strengths supported by the boot ROM + are choosen. +- wp-gpios: GPIO specifier for the write protect pin. + +Optional child node of NAND chip nodes: +Partitions: see partition.txt + + Example: + nand-controller@70008000 { + compatible = "nvidia,tegra20-nand"; + reg = <0x70008000 0x100>; + interrupts = ; + clocks = <&tegra_car TEGRA20_CLK_NDFLASH>; + clock-names = "nand"; + resets = <&tegra_car 13>; + reset-names = "nand"; + + nand@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <1>; + nand-bus-width = <8>; + nand-on-flash-bbt; + nand-ecc-algo = "bch"; + nand-ecc-strength = <8>; + wp-gpios = <&gpio TEGRA_GPIO(S, 0) GPIO_ACTIVE_LOW>; + }; + };