From patchwork Tue May 15 14:41:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 913696 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=fail (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="A7Z2DiG2"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40lgMb0ZXWz9s08 for ; Wed, 16 May 2018 00:44:59 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754054AbeEOOlp (ORCPT ); Tue, 15 May 2018 10:41:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:53670 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753285AbeEOOlm (ORCPT ); Tue, 15 May 2018 10:41:42 -0400 Received: from PC-kkoz.proceq.com (unknown [213.160.61.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EB6CE2176F; Tue, 15 May 2018 14:41:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1526395301; bh=Id1aZIr46lKqshw8TRIS/ozPZxsQGdgAh13AB5NvJyg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A7Z2DiG2UdLF3NcpGQ63xYxZ1wQ9LX+5/q2V0k/GQEbjaC1t2W5WDAn1izJ2MUSe9 FtNYZepUOjiO8Ziz3BEr8QqTU88XnSyDO7qTD7wHTzaDygFE6E9/+Vq5GFbgHHY/zm rqVfZr26ekmmVaewQT3U5LLGkF2KUf93SmGpBndI= From: Krzysztof Kozlowski To: Rob Herring , Mark Rutland , Thierry Reding , Jonathan Hunter , devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Marcel Ziswiler , Stefan Agner , Lucas Stach , Krzysztof Kozlowski Subject: [PATCH v4 3/3] ARM: dts: tegra: Work safely with 256 MB Colibri-T20 modules Date: Tue, 15 May 2018 16:41:25 +0200 Message-Id: <1526395285-19006-4-git-send-email-krzk@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526395285-19006-1-git-send-email-krzk@kernel.org> References: <1526395285-19006-1-git-send-email-krzk@kernel.org> Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Colibri-T20 can come in 256 MB RAM (with 512 MB NAND) or 512 MB RAM (with 1024 MB NAND) flavors. Both of them will use the same DTSI expecting the bootloader to do the fixup of /memory node. However in case it does not happen, let's stay on safe side by limiting the memory to 256 MB for both versions of Colibri-T20. Signed-off-by: Krzysztof Kozlowski --- RFT: Not tested on 512 MB module as I have only the 256 MB one. Changes since v3: 1. Reduce the memory in existing DTSI instead of creating a new one (suggested by Marcel). Changes since v2: 1. Do not add new compatible but use everywhere existing "toradex,colibri_t20-512" (suggested by Rob). Changes since v1: 1. Fix memory size in tegra20-colibri-256.dtsi (was working fine because my bootloader uses mem= argument). --- arch/arm/boot/dts/tegra20-colibri-512.dtsi | 9 +++++++-- arch/arm/boot/dts/tegra20-iris-512.dts | 2 +- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/tegra20-colibri-512.dtsi b/arch/arm/boot/dts/tegra20-colibri-512.dtsi index 305efb275b48..b9387c540450 100644 --- a/arch/arm/boot/dts/tegra20-colibri-512.dtsi +++ b/arch/arm/boot/dts/tegra20-colibri-512.dtsi @@ -2,7 +2,7 @@ #include "tegra20.dtsi" / { - model = "Toradex Colibri T20 512MB"; + model = "Toradex Colibri T20 256/512 MB"; compatible = "toradex,colibri_t20-512", "nvidia,tegra20"; aliases { @@ -12,7 +12,12 @@ memory@0 { device_type = "memory"; - reg = <0x00000000 0x20000000>; + /* + * Set memory to 256 MB to be safe as this could be used on + * 256 or 512 MB module. It is expected from bootloader + * to fix this up for 512 MB version. + */ + reg = <0x00000000 0x10000000>; }; host1x@50000000 { diff --git a/arch/arm/boot/dts/tegra20-iris-512.dts b/arch/arm/boot/dts/tegra20-iris-512.dts index 40126388946d..efaa96228722 100644 --- a/arch/arm/boot/dts/tegra20-iris-512.dts +++ b/arch/arm/boot/dts/tegra20-iris-512.dts @@ -4,7 +4,7 @@ #include "tegra20-colibri-512.dtsi" / { - model = "Toradex Colibri T20 512MB on Iris"; + model = "Toradex Colibri T20 256/512 MB on Iris"; compatible = "toradex,iris", "toradex,colibri_t20-512", "nvidia,tegra20"; aliases {