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ARM: tegra: Work safely with 256 MB Colibri-T20 modules 

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.

Rename to remove the unnecessary memory size from the device tree file
name.  While at it, also follow the typical Toradex SoC, module, carrier
board hierarchy.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Krzysztof Kozlowski 2018-07-09 18:05:19 +02:00 committed by Thierry Reding
parent 35a21229f8
commit 8ab11f8068
3 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/boot/dts/Makefile
View File

@ -1039,7 +1039,7 @@ dtb-$(CONFIG_ARCH_TANGO) += \
tango4-vantage-1172.dtb
dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
tegra20-harmony.dtb \
tegra20-iris-512.dtb \
tegra20-colibri-iris.dtb \
tegra20-medcom-wide.dtb \
tegra20-paz00.dtb \
tegra20-plutux.dtb \

4
arch/arm/boot/dts/tegra20-iris-512.dts → arch/arm/boot/dts/tegra20-colibri-iris.dts
View File

@ -1,10 +1,10 @@
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "tegra20-colibri-512.dtsi"
#include "tegra20-colibri.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 {

9
arch/arm/boot/dts/tegra20-colibri-512.dtsi → arch/arm/boot/dts/tegra20-colibri.dtsi
View File

@ -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 {
@ -11,7 +11,12 @@
};
memory@0 {
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 {