linux-kernel - [PATCH 1/7] ARM: dts: exynos: Add missing memory node for Exynos5440 boards

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Message-Id: <1472645679-5696-2-git-send-email-javier@osg.samsung.com>
Date:   Wed, 31 Aug 2016 14:14:33 +0200
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     devicetree@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
        linux-samsung-soc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>
Subject: [PATCH 1/7] ARM: dts: exynos: Add missing memory node for Exynos5440 boards

The skeleton.dtsi file was removed in ARM64 for different reasons as
explained in commit ("3ebee5a2e141 arm64: dts: kill skeleton.dtsi").

These also applies to ARM and it will also allow to get rid of the
following DTC warnings in the future:

"Node /memory has a reg or ranges property, but no unit name"

But these boards don't have a memory node defined, so removing the
skeleton.dtsi inclusion in exynos4.dtsi will cause a change in the
compiled DTB. Add a dummy memory node so the compiled DTB doesn't
change if the skeleton.dtsi is removed from exynos4.dtsi.

Eventually the correct starting addresses and sizes should be used
but I didn't find that information.

Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
---

 arch/arm/boot/dts/exynos5440-sd5v1.dts    | 5 +++++
 arch/arm/boot/dts/exynos5440-ssdk5440.dts | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5440-sd5v1.dts b/arch/arm/boot/dts/exynos5440-sd5v1.dts
index a98501bab6fc..333db4ff373a 100644
--- a/arch/arm/boot/dts/exynos5440-sd5v1.dts
+++ b/arch/arm/boot/dts/exynos5440-sd5v1.dts
@@ -20,6 +20,11 @@
 		bootargs = "root=/dev/sda2 rw rootwait ignore_loglevel earlyprintk no_console_suspend mem=2048M@...0000000 mem=6144M@...00000000 console=ttySAC0,115200";
 	};
 
+	memory {
+		device_type = "memory";
+		reg = <0 0>;
+	};
+
 	fixed-rate-clocks {
 		xtal {
 			compatible = "samsung,clock-xtal";
diff --git a/arch/arm/boot/dts/exynos5440-ssdk5440.dts b/arch/arm/boot/dts/exynos5440-ssdk5440.dts
index 6a0d802e87c8..82fea6f94704 100644
--- a/arch/arm/boot/dts/exynos5440-ssdk5440.dts
+++ b/arch/arm/boot/dts/exynos5440-ssdk5440.dts
@@ -21,6 +21,11 @@
 		bootargs = "root=/dev/sda2 rw rootwait ignore_loglevel earlyprintk no_console_suspend mem=2048M@...0000000 mem=6144M@...00000000 console=ttySAC0,115200";
 	};
 
+	memory {
+		device_type = "memory";
+		reg = <0 0>;
+	};
+
 	fixed-rate-clocks {
 		xtal {
 			compatible = "samsung,clock-xtal";
-- 
2.7.4