linux-kernel - [PATCH 3/3] arm64: dts: exynos7870-j6lte: reduce memory ranges to base amount

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Message-Id: <20250626-exynos7870-dts-fixes-v1-3-349987874d9a@disroot.org>
Date: Thu, 26 Jun 2025 13:02:58 +0530
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Kaustabh Chakraborty <kauschluss@...root.org>, stable@...r.kernel.org
Subject: [PATCH 3/3] arm64: dts: exynos7870-j6lte: reduce memory ranges to
 base amount

The device is available in multiple variants with differing RAM
capacities. The memory range defined in the 0x80000000 bank exceeds the
address range of the memory controller, which eventually leads to ARM
SError crashes. Reduce the bank size to a value which is available to
all devices.

The bootloader must be responsible for identifying the RAM capacity and
editing the memory node accordingly.

Fixes: d6f3a7f91fdb ("arm64: dts: exynos: add initial devicetree support for exynos7870")
Cc: stable@...r.kernel.org # v6.16
Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
---
 arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
index 61eec1aff32ef397c69ee3f0cba8050755f74fc6..b8ce433b93b1b488da31bbe4846f8092243611ad 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
@@ -89,7 +89,7 @@ key-volup {
 	memory@...00000 {
 		device_type = "memory";
 		reg = <0x0 0x40000000 0x3d800000>,
-		      <0x0 0x80000000 0x7d800000>;
+		      <0x0 0x80000000 0x40000000>;
 	};
 
 	pwrseq_mmc1: pwrseq-mmc1 {

-- 
2.49.0