From 82066bdb5a759ec00c18f9667853c4fe8840e83d Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 4 Mar 2014 17:37:00 +0100 Subject: [PATCH] ARM: mvebu: switch the Armada XP DB to use internal registers at 0xf1000000 Marvell has now provided bootloaders that are Device Tree capable for the Armada XP DB board, and that also remap the internal register base address to 0xf1000000. In addition, the bootloader now sets the MBus Window base address to 0xf0000000, but on this board, this change doesn't make much difference since the board is by default equipped with 2 GB of RAM. Therefore this commit updates the soc->ranges Device Tree property with the fact that the internal registers are now mapped at 0xf1000000. Signed-off-by: Thomas Petazzoni Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-xp-db.dts | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/armada-xp-db.dts b/arch/arm/boot/dts/armada-xp-db.dts index bcf6d79a57ec..448373c4b0e5 100644 --- a/arch/arm/boot/dts/armada-xp-db.dts +++ b/arch/arm/boot/dts/armada-xp-db.dts @@ -2,7 +2,7 @@ * Device Tree file for Marvell Armada XP evaluation board * (DB-78460-BP) * - * Copyright (C) 2012 Marvell + * Copyright (C) 2012-2014 Marvell * * Lior Amsalem * Gregory CLEMENT @@ -11,6 +11,15 @@ * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. + * + * Note: this Device Tree assumes that the bootloader has remapped the + * internal registers to 0xf1000000 (instead of the default + * 0xd0000000). The 0xf1000000 is the default used by the recent, + * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier + * boards were delivered with an older version of the bootloader that + * left internal registers mapped at 0xd0000000. If you are in this + * situation, you should either update your bootloader (preferred + * solution) or the below Device Tree should be adjusted. */ /dts-v1/; @@ -30,7 +39,7 @@ memory { }; soc { - ranges = ;