5.1-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 4.14.53 / arm-dts-mt7623-fix-invalid-memory-node-being-generated.patch

From c0b0d540db1a8bfb041166c4991dd6f624e8de45 Mon Sep 17 00:00:00 2001
From: Sean Wang <sean.wang@mediatek.com>
Date: Wed, 11 Apr 2018 16:53:56 +0800
Subject: arm: dts: mt7623: fix invalid memory node being generated

From: Sean Wang <sean.wang@mediatek.com>

commit c0b0d540db1a8bfb041166c4991dd6f624e8de45 upstream.

Below two wrong nodes in existing DTS files would cause a fail boot since
in fact the address 0 is not the correct place the memory device locates
at.

memory {
        device_type = "memory";
        reg = <0x0 0x0 0x0 0x0>;
};

memory@80000000 {
        reg = <0x0 0x80000000 0x0 0x40000000>;
};

In order to avoid having a memory node starting at address 0, we can't
include file skeleton64.dtsi and instead need to explicitly manually
define a few of properties the DTS relies on such as #address-cells
and #size-cells in root node and device_type in the node memory@80000000.

Cc: stable@vger.kernel.org
Fixes: 31ac0d69a1d4 ("ARM: dts: mediatek: add MT7623 basic support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arm/boot/dts/mt7623.dtsi                 |    3 ++-
 arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts |    1 +
 arch/arm/boot/dts/mt7623n-rfb.dtsi            |    1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

--- a/arch/arm/boot/dts/mt7623.dtsi
+++ b/arch/arm/boot/dts/mt7623.dtsi
@@ -22,11 +22,12 @@
 #include <dt-bindings/phy/phy.h>
 #include <dt-bindings/reset/mt2701-resets.h>
 #include <dt-bindings/thermal/thermal.h>
-#include "skeleton64.dtsi"
 
 / {
 	compatible = "mediatek,mt7623";
 	interrupt-parent = <&sysirq>;
+	#address-cells = <2>;
+	#size-cells = <2>;
 
 	cpu_opp_table: opp_table {
 		compatible = "operating-points-v2";
--- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
+++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
@@ -100,6 +100,7 @@
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0 0x80000000 0 0x40000000>;
 	};
 };
--- a/arch/arm/boot/dts/mt7623n-rfb.dtsi
+++ b/arch/arm/boot/dts/mt7623n-rfb.dtsi
@@ -47,6 +47,7 @@
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0 0x80000000 0 0x40000000>;
 	};